JPH089493Y2 - Sealing device - Google Patents
Sealing deviceInfo
- Publication number
- JPH089493Y2 JPH089493Y2 JP1990007001U JP700190U JPH089493Y2 JP H089493 Y2 JPH089493 Y2 JP H089493Y2 JP 1990007001 U JP1990007001 U JP 1990007001U JP 700190 U JP700190 U JP 700190U JP H089493 Y2 JPH089493 Y2 JP H089493Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- sliding member
- annular
- housing
- peripheral surface
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 239000003566 sealing material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 8
- 239000004576 sand Substances 0.000 description 7
- 239000004519 grease Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Screw Conveyors (AREA)
- Sealing With Elastic Sealing Lips (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、シールド掘削機のスクリユーコンベアの土
砂シール装置等に適用するシール装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a sealing device applied to a soil and sand sealing device or the like of a screw conveyor of a shield excavator.
（従来の技術） 従来のシールド掘削機のスクリユーコンベアの土砂シ
ール装置を第４図により説明すると，（１）がスクリユ
ー，（２）が同スクリユー（１）を固定したスクリユー
駆動軸，（３）が上記スクリユー（１）を取り囲むケー
シング，（４）が上記スクリユー駆動軸（２）に固定し
た円筒状のシール摺動部材，（11）が同シール摺動部材
（４）及び後記歯車（８）（９）を取り囲むハウジン
グ，（８）が上記シール摺動部材（４）に固定した環状
歯車，（10）が上記ハウジング（11）外に設置したモー
タ，（９）が同モータ（10）の出力軸に取付けた歯車
で，同歯車（９）が上記環状歯車（８）に噛合してい
る。また（12a）（12b）が上記環状歯車（８）と上記シ
ール摺動部材（４）と上記スクリユー駆動軸（２）と上
記スクリユー（１）とを上記ハウジング（11）及び上記
ケーシング（３）の内部に回転可能に支持する軸受，
（13a）（13b）が上記摺動シール部材（４）の外周面と
上記ハウジング（11）の内周面との間に形成したグリー
ス室，（7a）（7b）が同グリース室（13a）（13b）に介
装した環状シール材，（15a）（15b）が上記摺動シール
部材（４）と上記ハウジングとの両端部間に形成した隙
間で，回転するスクリユー（１）により土砂（14）をケ
ーシング（３）内に搬送する一方，シール摺動部材
（４）とハウジング（11）との間を環状シール材（7a）
（7b）により閉じて，上記土砂（14）の隙間（15a）（1
5b）を経たハウジング（11）内への侵入を防止するよう
にしている。(Prior Art) A conventional sand sealing device for a screw conveyor of a shield excavator will be described with reference to FIG. 4. (1) is a screw, (2) is a screw drive shaft to which the screw (1) is fixed, and (3) ) Is a casing surrounding the screw (1), (4) is a cylindrical seal sliding member fixed to the screw drive shaft (2), (11) is the same sealing sliding member (4) and a gear (8) described later. ) A housing surrounding (9), (8) an annular gear fixed to the seal sliding member (4), (10) a motor installed outside the housing (11), and (9) a motor (10). A gear mounted on the output shaft of the gear (9) meshes with the annular gear (8). Further, (12a) and (12b) connect the annular gear (8), the seal sliding member (4), the screw drive shaft (2) and the screw (1) to the housing (11) and the casing (3). Bearings rotatably supported inside the
(13a) and (13b) are grease chambers formed between the outer peripheral surface of the sliding seal member (4) and the inner peripheral surface of the housing (11), and (7a) and (7b) are the grease chambers (13a). An annular seal material (15a) (15b) interposed in (13b) is a gap formed between both ends of the sliding seal member (4) and the housing, and is rotated by the rotating screw (1) to remove soil (14). ) Is conveyed into the casing (3), while the annular seal member (7a) is provided between the seal sliding member (4) and the housing (11).
Close it with (7b) and leave the gap (15a) (1a) in the earth and sand (14).
It is designed to prevent entry into the housing (11) through 5b).
（考案が解決しようとする課題） 前記第４図に示す従来のシール装置では，円筒状のシ
ール摺動部材（４）と環状シール材（7a）（7b）との摺
動接触面がシール材自身の締付力を受けながら摺動する
ので、互いの摺動接触面が摩耗し易く，この摩耗が進展
すれば，シール性能が低下し，土砂がケーシング（３）
内からハウジング（11）内へ侵入して，軸受（12a）（1
2b）や歯車（８）（９）が損傷するので，環状シール材
（7a）（7b）が摩耗する都度，新たなものと交換しなけ
ればならないという問題があった。(Problems to be Solved by the Invention) In the conventional sealing device shown in FIG. 4, the sliding contact surface between the cylindrical seal sliding member (4) and the annular sealing members (7a) and (7b) is a sealing member. Since they slide while receiving their own tightening force, their sliding contact surfaces are likely to wear, and if this wear progresses, the sealing performance deteriorates, and the earth and sand fall into the casing (3).
The inside of the bearing (12a) (1
Since 2b) and the gears (8) and (9) are damaged, there is a problem that a new one needs to be replaced each time the annular sealing materials (7a) and (7b) are worn.
本考案は前記の問題点に鑑み提案するものであり，そ
の目的とする処は，環状シール材の交換回数を減少でき
るシール装置を提供しようとする点にある。The present invention is proposed in view of the above problems, and an object thereof is to provide a sealing device capable of reducing the number of times of exchanging the annular sealing material.
（課題を解決するための手段） 上記の目的を達成するために，本考案は，円筒状のシ
ール摺動部材を有する回転体と、同回転体を取り囲むケ
ーシングと、上記シール摺動部材を取り囲むハウジング
とを有し、同ハウジングと上記シール摺動部材との間に
環状シール材を介装したシール装置において、前記シー
ル摺動部材と前記ハウジングとの間にシール支持部材を
前記回転体の軸方向に移動可能に設け、同シール支持部
材の内周面に複数個の環状シール材を上記軸方向に間隔
を置いて設け、前記シール摺動部材の外周面に小径のシ
ール接触部と大径のシール接触部とを上記軸方向に交互
に設けて、上記各環状シール材の先端部を上記各シール
接触部に接触させている。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a rotating body having a cylindrical seal sliding member, a casing surrounding the rotating body, and a surrounding seal sliding member. A seal device having a housing, wherein an annular seal material is interposed between the housing and the seal sliding member, wherein a seal supporting member is provided between the seal sliding member and the housing. Movably in the same direction, a plurality of annular sealing members are provided on the inner peripheral surface of the seal supporting member at intervals in the axial direction, and a small-diameter seal contact portion and a large diameter are provided on the outer peripheral surface of the seal sliding member. Seal contact portions are alternately provided in the axial direction, and the tip end portions of the annular seal members are brought into contact with the seal contact portions.
（作用） 本考案のシール装置は前記のように構成されており、
回転体側のスクリユー等により土砂等をケーシング内へ
搬送する一方、シール支持部材の内周面に設けた各環状
シール材の先端部をシール摺動部材の外周面に設けた各
小径のシール接触部に接触させて、シール摺動部材とハ
ウジングとの端部間に形成した隙間を経たハウジング内
への土砂侵入を防止しているときに、上記各環状シール
材の先端部またはシール摺動部材が摩耗すると、シール
支持部材とこれに固定している各環状シール材とを回転
体の軸方向に移動させ、同各環状シール材の先端部を上
記シール摺動部材の外周面に設けた各大径側のシール接
触部に接触させて、上記各環状シール材のシール性能を
回復させる。(Operation) The sealing device of the present invention is configured as described above,
While transporting earth and sand etc. into the casing by the screw on the rotating body side, each small-diameter seal contact part provided with the tip of each annular seal material provided on the inner peripheral surface of the seal support member on the outer peripheral surface of the seal sliding member. Of the above-mentioned annular seal material or the seal sliding member while preventing the intrusion of sediment into the housing through the gap formed between the end portion of the seal sliding member and the housing. When worn, the seal support member and each annular seal member fixed thereto are moved in the axial direction of the rotating body, and the tip end of each annular seal member is attached to the outer peripheral surface of the seal sliding member. The seal performance of each of the above annular seal materials is restored by bringing the seal contact portion on the radial side into contact.
（実施例） 次に本考案のシール装置を第1,2,3図に示す一実施例
により説明すると，第１図の（１）がスクリユー，
（２）が同スクリユー（１）に固定したスクリユー駆動
軸，（３）が上記スクリユー（１）を取り囲むケーシン
グ，（４）が上記スクリユー駆動軸（２）に固定した円
筒状のシール摺動部材，（11）が同シール摺動部材
（４）及び後記歯車（８）（９）を取り囲むハウジン
グ，（８）が上記シール摺動部材（４）に固定した環状
歯車で、回転体は、互いに一体のスクリユー（１）とス
クリユー駆動軸（２）とシール摺動部材（４）と環状歯
車（８）とにより構成されている。(Embodiment) Next, the sealing device of the present invention will be described with reference to an embodiment shown in FIGS. 1, 2, and 3. (1) of FIG.
(2) is a screw drive shaft fixed to the screw (1), (3) is a casing surrounding the screw (1), and (4) is a cylindrical seal sliding member fixed to the screw drive shaft (2). , (11) is a housing surrounding the seal sliding member (4) and the gears (8) and (9) described later, and (8) is an annular gear fixed to the seal sliding member (4), and the rotating bodies are mutually It is composed of an integrated screw (1), a screw drive shaft (2), a seal sliding member (4) and an annular gear (8).
（12a）（12b）が上記環状歯車（８）と上記シール摺
動部材（４）と上記スクリユー駆動軸（２）と上記スク
リユー（１）とを上記ハウジング（11）及び上記ケーシ
ング（３）の内部に回転可能に支持する軸受である。(12a) and (12b) connect the annular gear (8), the seal sliding member (4), the screw drive shaft (2) and the screw (1) to the housing (11) and the casing (3). It is a bearing that is rotatably supported inside.
（10）が上記ハウジング（11）外に設置したモータ、
（９）が同モータ（10）の出力軸に取付けた歯車で、同
歯車（９）が上記環状歯車（８）に噛合しており、モー
タ（10）を駆動し、その回転を歯車（９）を介して環状
歯車（８）に伝えて、同環状歯車（８）とシール摺動部
材（４）とスクリユー駆動軸（２）とスクリユー（１）
とを回転させるようになっている。(10) is a motor installed outside the housing (11),
(9) is a gear attached to the output shaft of the motor (10), and the gear (9) meshes with the annular gear (8) to drive the motor (10) and rotate its rotation to the gear (9). ) To the annular gear (8), the annular gear (8), the seal sliding member (4), the screw drive shaft (2) and the screw (1).
It is designed to rotate and.
（13a）（13b）が上記シール摺動部材（４）の外周面
と上記ハウジング（11）内のシール支持部材（5a）（5
b）との間に形成したグリース室、（15a）（15b）が上
記シール摺動部材（４）と上記ハウジング（11）との両
端部間に形成した隙間である。(13a) and (13b) are the outer peripheral surface of the seal sliding member (4) and the seal supporting members (5a) (5) inside the housing (11).
A grease chamber formed between the seal sliding member (4) and the housing (11) is a gap formed between the seal sliding member (4) and the housing (11).
第２図及び第３図の（5a）（5b）が上記ハウジング
（11）と上記シール摺動部材（４）との間に軸方向への
移動を可能に挿入したシール支持部材、（6a）（6b）が
同シール支持部材（5a）（5b）を軸方向に移動させるシ
ール支持部材移動用ボルトで、同シール支持部材移動用
ボルト（6a）（6b）の頭部がハウジング（11）外に突出
している。A seal support member (6a) in which (5a) and (5b) of FIGS. 2 and 3 are inserted between the housing (11) and the seal sliding member (4) so as to be movable in the axial direction. (6b) is a seal support member moving bolt that axially moves the seal support members (5a) and (5b), and the heads of the seal support member moving bolts (6a) (6b) are outside the housing (11). Overhangs.
（7a）（7b）が上記シール支持部材（5a）（5b）の内
周面に上記軸方向に間隔を置いて設けた複数個の環状シ
ール材、（16）が同環状シール材（7a）（7b）と同数の
小径側のシール接触部、（17）が同環状シール材（7a）
（7b）と同数の大径側のシール接触部（傾斜部）で、こ
れらの小径側のシール接触部（16）と大径側のシール接
触部（17）とが上記シール摺動部材（４）の外周面に上
記軸方向に交互に設けられて、常時は、各環状シール材
（7a）（7b）の先端部が各小径側のシール接触部（16）
に接触している。(7a) and (7b) are a plurality of annular seal members provided on the inner peripheral surface of the seal support members (5a) and (5b) at intervals in the axial direction, and (16) is the same annular seal member (7a). The same number of seal contact parts on the small diameter side as (7b), and (17) the same annular seal material (7a)
The same number of seal contact portions (slopes) on the large diameter side as in (7b), the seal contact portion (16) on the small diameter side and the seal contact portion (17) on the large diameter side are the seal sliding members (4). ) Are provided alternately on the outer peripheral surface in the axial direction, and the tip of each annular seal material (7a) (7b) is normally the seal contact portion (16) on the small diameter side.
Is in contact with.
次に前記第１図，第２図及び第３図に示すシール装置
の作用を具体的に説明する。回転するスクリユー（１）
により土砂（14）をケーシング（３）内に搬送する一
方，シール摺動部材（４）とハウジング（11）との間を
シール摺動部材（４）の第１シール接触部（16）に接触
している環状シール材（7a）（7b）により閉じて，上記
土砂（14）の隙間（15a）（15b）を経たハウジング（1
1）内への侵入を防止する。そして環状シール材（7a）
（7b）またはシール摺動部材（４）が摩耗したときには
シール支持部材移動用ボルト（6a）（6b）を把持して，
シール支持部材（5a）（5b）とこれに固定した環状シー
ル部材（7a）（7b）とを軸方向に移動させ，同環状シー
ル材（7a）（7b）の先端部をシール摺動部材（４）の第
２シール接触部（傾斜部）（17）に接触させて，環状シ
ール部材（7a）（7b）のシール性能を回復させる。Next, the operation of the sealing device shown in FIGS. 1, 2, and 3 will be specifically described. Rotating screen (1)
Conveys the earth and sand (14) into the casing (3) while contacting the first seal contact portion (16) of the seal sliding member (4) between the seal sliding member (4) and the housing (11). The housing (1) that has been closed by the annular sealing materials (7a) and (7b)
1) Prevent invasion. And annular sealing material (7a)
When (7b) or the seal sliding member (4) is worn, hold the seal support member moving bolts (6a) (6b),
The seal support members (5a) (5b) and the annular seal members (7a) (7b) fixed to the seal support members (5a) (5b) are moved in the axial direction, and the leading ends of the annular seal members (7a) (7b) are moved to the seal sliding member ( The seal performance of the annular seal members (7a) and (7b) is restored by contacting the second seal contact portion (inclined portion) (17) of 4).
（考案の効果） 本考案のシール装置は前記のように回転体側のスクリ
ユー等により土砂等をケーシング内へ搬送する一方、シ
ール支持部材の内周面に設けた各環状シール材の先端部
をシール摺動部材の外周面に設けた各小径のシール接触
部に接触させて、シール摺動部材とハウジングとの端部
間に形成した隙間を経たハウジング内への土砂侵入を防
止しているときに、上記各環状シール材の先端部または
シール摺動部材が摩耗すると、シール支持部材とこれに
固定している各環状シール材とを回転体の軸方向に移動
させ、同各環状シール材の先端部を上記シール摺動部材
の外周面に設けた各大径側のシール接触部に接触させ
て、上記各環状シール材のシール性能を回復させるの
で、環状シール材の交換回数を減少できる効果がある。(Effect of the Invention) As described above, the sealing device of the present invention conveys earth and sand into the casing by the screw on the rotating body side as described above, and seals the tip of each annular sealing material provided on the inner peripheral surface of the seal supporting member. When contacting the small-diameter seal contact portions provided on the outer peripheral surface of the sliding member to prevent the intrusion of sediment into the housing through the gap formed between the ends of the sealing sliding member and the housing When the tip end portion of each of the annular seal members or the seal sliding member is worn, the seal support member and each of the annular seal members fixed thereto are moved in the axial direction of the rotating body, and the tip of each of the annular seal members is moved. Part to contact the seal contact portion on each large diameter side provided on the outer peripheral surface of the seal sliding member to restore the sealing performance of each of the annular seal members, and thus the effect of reducing the number of times of exchanging the annular seal member is obtained. is there.
第１図は本考案に係わるシール装置の一実施例を示す縦
断側面図，第2,3図はその作用説明図，第４図は従来の
シール装置を示す縦断側面図である。 （３）……ケーシング、（４）……シール摺動部材、
（5a）（5b）……シール支持部材、（7a）（7b）……環
状シール材、（11）……ハウジング、（16）……小径側
のシール接触部、（17）……大径側のシール接触部。FIG. 1 is a vertical sectional side view showing an embodiment of a sealing device according to the present invention, FIGS. 2 and 3 are explanatory views of its operation, and FIG. 4 is a vertical sectional side view showing a conventional sealing device. (3) …… Casing, (4) …… Seal sliding member,
(5a) (5b) …… Seal support member, (7a) (7b) …… annular seal material, (11) …… housing, (16) …… small diameter side seal contact part, (17) …… large diameter Side seal contact part.
Claims (1)
と、同回転体を取り囲むケーシングと、上記シール摺動
部材を取り囲むハウジングとを有し、同ハウジングと上
記シール摺動部材との間に環状シール材を介装したシー
ル装置において、前記シール摺動部材と前記ハウジング
との間にシール支持部材を前記回転体の軸方向に移動可
能に設け、同シール支持部材の内周面に複数個の環状シ
ール材を上記軸方向に間隔を置いて設け、前記シール摺
動部材の外周面に小径のシール接触部と大径のシール接
触部とを上記軸方向に交互に設けて、上記各環状シール
材の先端部を上記各シール接触部に接触させたことを特
徴とするシール装置。1. A rotary body having a cylindrical seal sliding member, a casing surrounding the rotary sliding body, and a housing surrounding the seal sliding member, the space between the housing and the seal sliding member. In a seal device having an annular seal member interposed therein, a seal support member is provided between the seal sliding member and the housing so as to be movable in the axial direction of the rotating body, and a plurality of seal support members are provided on an inner peripheral surface of the seal support member. A plurality of annular seal members are provided at intervals in the axial direction, and a small-diameter seal contact portion and a large-diameter seal contact portion are alternately provided on the outer peripheral surface of the seal sliding member in the axial direction. A sealing device in which a tip end portion of an annular sealing material is brought into contact with each of the seal contact portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990007001U JPH089493Y2 (en) | 1990-01-30 | 1990-01-30 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990007001U JPH089493Y2 (en) | 1990-01-30 | 1990-01-30 | Sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0399274U JPH0399274U (en) | 1991-10-16 |
| JPH089493Y2 true JPH089493Y2 (en) | 1996-03-21 |
Family
ID=31510665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990007001U Expired - Fee Related JPH089493Y2 (en) | 1990-01-30 | 1990-01-30 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089493Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009255998A (en) * | 2008-04-11 | 2009-11-05 | Sumitomo Heavy Ind Ltd | Screw conveyer |
-
1990
- 1990-01-30 JP JP1990007001U patent/JPH089493Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0399274U (en) | 1991-10-16 |
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| LAPS | Cancellation because of no payment of annual fees |