JPH10252392A - Multi-shaft screw conveyer - Google Patents

Multi-shaft screw conveyer

Info

Publication number
JPH10252392A
JPH10252392A JP7895797A JP7895797A JPH10252392A JP H10252392 A JPH10252392 A JP H10252392A JP 7895797 A JP7895797 A JP 7895797A JP 7895797 A JP7895797 A JP 7895797A JP H10252392 A JPH10252392 A JP H10252392A
Authority
JP
Japan
Prior art keywords
screw
screw conveyor
blades
rotating shaft
blade
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.)
Granted
Application number
JP7895797A
Other languages
Japanese (ja)
Other versions
JP3886200B2 (en
Inventor
Yoshinori Nishida
義則 西田
Takeshi Sakae
毅 熾 栄
Michikazu Kaneko
迪弌 金子
Kenichi Kaneko
研一 金子
Hitoshi Kitayama
仁志 北山
Yoshinari Toyama
良成 外山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
IHI Corp
Original Assignee
Taisei Corp
IHI Corp
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 Taisei Corp, IHI Corp filed Critical Taisei Corp
Priority to JP07895797A priority Critical patent/JP3886200B2/en
Publication of JPH10252392A publication Critical patent/JPH10252392A/en
Application granted granted Critical
Publication of JP3886200B2 publication Critical patent/JP3886200B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Screw Conveyors (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve salability for a multi-shaft screw conveyer while preventing clumpy-end-granular matters form being caught by a method wherein elastic layers are formed at outer peripheral faces of each of rotating shafts, and peripheral end faces of screw blades are brought near, abutted to each other, or brought into contact elastically with each other. SOLUTION: A driving screw 10 and a driven screen 20 are arranged in parallel with each other in an outer cylinder 30 and driven oppositely in rotating motion with a motor 40 through tears 15 and 25. A spiral blade 12 provided at the driving screw 10 and a spiral blade 22 provided at the driven screw 20 are brought into contact with each other, with each of their peripheral end faces fitting to or nearing to the sides of each of the opposite blades 22 and 12, and earth stuck to the blades 12 and 22 is scraped off and clumpy-and-granular matters such as gravels in earth are crushed. Elastic layers 14 and 24 are formed respectively at peripheral faces of rotating shafts 11 and 21 and the peripheral end faces of the blades 12 and 22 are brought into contact in nearing, in fitting or in fitting in elasticity with each other. Flexible band plates such as spring steels may be used instead of the elastic layers 14 and 24. Thereby, salability can be improved, and the clumpy-and-granular matters interposed can be prevented from being caught because of elastic deformation.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は各種シールドマシン
の排土手段、汎用縦向きコンベア、或いは礫用ポンプ等
として活用できる、多軸スクリューコンベアに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screw screw conveyor which can be used as an earth discharging means for various shield machines, a general-purpose vertical conveyor, or a pump for gravel.

【０００２】[0002]

【従来の技術】一般にシールドマシンは切羽側の掘削土
砂を排土するスクリューコンベアを具備している。この
種のスクリューコンベアは、両端を開放した外筒と、こ
の外筒内に収容したスクリューと、スクリューに回転を
付与するモータとからなり、スクリューの回転送りによ
りスクリューと外筒間に形成される螺旋状の空間を搬送
路として掘削土砂を搬送する構造となっている。2. Description of the Related Art Generally, a shield machine is provided with a screw conveyor for discharging the excavated earth and sand on the face side. This kind of screw conveyor is composed of an outer cylinder open at both ends, a screw housed in the outer cylinder, and a motor that imparts rotation to the screw, and is formed between the screw and the outer cylinder by rotation feed of the screw. The structure is such that the excavated earth and sand is transported using the spiral space as a transport path.

【０００３】また土圧式のシールドマシンにあっては、
大断面トンネルや大深度トンネルを施工する場合、切羽
圧がより高くなるため、掘削土を圧密したり添加剤を混
合して止水性を高めることで、切羽圧を制御したり、ス
クリューコンベアの排土口にゲート及びバルブ又はポン
プを設けて切羽圧を制御している。[0003] In the earth pressure type shield machine,
When constructing large-section tunnels or deep-depth tunnels, the face pressure becomes higher.Therefore, the face pressure is controlled by consolidating the excavated soil or increasing the water stoppage by mixing additives, and the screw conveyor is discharged. A gate and a valve or a pump are provided at the earthen mouth to control the face pressure.

【０００４】[0004]

【発明が解決しようとする課題】前記した従来のスクリ
ューコンベアには次のような課題がある。 ＜イ＞ 礫を含む土砂を搬送すると、礫がスクリューの
回転軸と外筒間に噛み込んで搬送不能に陥り易い。その
ため従来は礫を含む土砂を搬送対象とできず、事前に礫
を除去したり、破砕する等の対策を講じる必要があっ
た。 ＜ロ＞ スクリューコンベアの止水性を確保するにはス
クリューの羽根と外筒間に発生する隙間を小さく設定す
る必要があり、その製造に高い加工精度が要求され製造
費がかさむ。 ＜ハ＞ 切羽圧力を制御する場合、土質変化に応じて添
加剤を混合したり、ゲート及びバルブやポンプを操作し
ているが、これらの操作は作業員の勘や高度の熟練技術
に頼っており、制御の確実性の点で不安があるだけでな
く経済性の点でも不利である。又、ゲート及びバルブや
ポンプを設けて排土量を制御するため搬送量が低下する
だけでなく、バルブやポンプに起因した礫の閉塞事故の
発生、切羽圧の脈動誘発、シールド内空の矮小化といっ
た問題がある。 ＜ニ＞ 外筒内に２つのスクリューを平行に配置した多
軸スクリューコンベアが提案されている。この多軸スク
リューコンベアにあっても前記したイ、ロと同様の問題
がある他、摩耗に伴うスクリューの交換に要する時間と
費用の負担が大きい。The above-described conventional screw conveyor has the following problems. <B> When the earth and sand containing the gravel are transported, the gravel is likely to be caught between the rotating shaft of the screw and the outer cylinder and become unable to be transported. For this reason, conventionally, earth and sand containing gravel could not be transported, and it was necessary to take measures such as removing gravel or crushing in advance. <B> In order to ensure the water stoppage of the screw conveyor, it is necessary to set a small gap between the blades of the screw and the outer cylinder, and high processing accuracy is required for the production, and the production cost increases. <C> When controlling the face pressure, additives are mixed according to soil changes, and gates, valves and pumps are operated. These operations depend on the intuition of workers and advanced skill. Therefore, not only is there a concern about the certainty of the control, but it is also disadvantageous in terms of economy. In addition, the gate, valves and pumps are provided to control the amount of earth removal, which not only reduces the transported amount, but also causes clogging of gravel caused by valves and pumps, pulsation of face pressure, dwarfing in the shield. Problem. <D> A multi-screw conveyor in which two screws are arranged in parallel in an outer cylinder has been proposed. This multi-screw conveyer has the same problems as those described in (a) and (b), and also has a large time and cost burden for exchanging screws due to abrasion.

【０００５】本発明は以上の問題点を解決するためにな
されたもので、その目的とするところは、つぎの多軸ス
クリューコンベアを提供することにある。 塊粒体の混入物を円滑に搬送できる多軸スクリューコ
ンベア。 簡易な構造で以て高い止水性を確保できる多軸スクリ
ューコンベア。The present invention has been made to solve the above problems, and an object of the present invention is to provide the following multi-screw conveyor. A multi-screw conveyor that can smoothly transport contaminants of agglomerates. A multi-screw conveyor with a simple structure that can ensure high water stoppage.

【０００６】[0006]

【課題を解決するための手段】請求項１に係る発明は、
回転軸の周面に螺旋条の羽根を設けて構成されるスクリ
ューを外筒内に収容したスクリューコンベアにおいて、
前記外筒内に主動スクリューを回転自在に収容すると共
に、前記主動スクリューと平行でかつ逆方向に回転する
従動スクリューを配置し、前記各スクリューの各羽根を
相互に逆向きに形成し、一方のスクリューの羽根の側面
に他方の羽根の周端面が当接又は近接し、スクリューの
回転軸の周面に、対向するスクリューの羽根と当接又は
近接する止水装置を設けたことを特徴とする、多軸スク
リューコンベアである。請求項２に係る発明は、請求項
２に記載の多軸スクリューコンベアにおいて、止水装置
を一方のスクリューの回転軸に設けたことを特徴とす
る、多軸スクリューコンベアである。請求項３に係る発
明は、請求項１に記載の多軸スクリューコンベアにおい
て、止水装置を両スクリューの回転軸に設けたことを特
徴とする、多軸スクリューコンベアである。請求項４に
係る発明は、請求項１〜３のいずれかに記載の多軸スク
リューコンベアにおいて、止水装置が回転軸の周面に被
覆した弾力層で構成することを特徴とする、多軸スクリ
ューコンベアである。請求項５に係る発明は、請求項１
〜３のいずれかに記載の多軸スクリューコンベアにおい
て、止水装置が回転軸の周面に植設した複数の帯板で構
成することを特徴とする、多軸スクリューコンベアであ
る。請求項６に係る発明は、請求項１〜５のいずれかに
記載の多軸スクリューコンベアにおいて、止水装置が交
換可能であることを特徴とする、多軸スクリューコンベ
アである。請求項７に係る発明は、請求項５に記載の多
軸スクリューコンベアにおいて、帯板に弾力性を有する
ブラシを設けたことを特徴とする、多軸スクリューコン
ベアである。The invention according to claim 1 is
In a screw conveyor that accommodates a screw configured by providing spiral blades on the peripheral surface of the rotating shaft in an outer cylinder,
While accommodating the driving screw rotatably in the outer cylinder, disposing a driven screw rotating in the opposite direction in parallel with the driving screw, forming the blades of each screw in a direction opposite to each other. The peripheral end surface of the other blade abuts or approaches the side surface of the screw blade, and a water stop device that abuts or approaches the opposing screw blade is provided on the peripheral surface of the rotating shaft of the screw. , A multi-screw conveyor. The invention according to claim 2 is the multi-screw conveyor according to claim 2, wherein the water stopping device is provided on a rotation shaft of one of the screws. According to a third aspect of the present invention, there is provided the multi-screw conveyor according to the first aspect, wherein the water stopping device is provided on the rotation shafts of both screws. The invention according to claim 4 is the multi-screw conveyor according to any one of claims 1 to 3, wherein the water stopping device is constituted by an elastic layer covering the peripheral surface of the rotating shaft. It is a screw conveyor. The invention according to claim 5 is the invention according to claim 1.
4. The multi-screw conveyor according to any one of the above-mentioned items, wherein the water stopping device is constituted by a plurality of strips implanted on the peripheral surface of the rotating shaft. The invention according to claim 6 is a multi-screw conveyor according to any one of claims 1 to 5, characterized in that a water stop device is replaceable. The invention according to claim 7 is the multi-screw conveyor according to claim 5, wherein an elastic brush is provided on the strip.

【０００７】[0007]

【発明の実施の形態１】以下図面を参照しながら本発明
の一実施の形態について説明する。Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

【０００８】〈イ〉多軸スクリューコンベアの全体構成 図１に多軸スクリューコンベアの縦断面図を示す。多軸
スクリューコンベアは主動スクリュー１０と、これと平
行に配置した従動スクリュー２０と、これらの両スクリ
ュー１０，２０を外装する外筒３０と、両スクリュー１
０，２０に回転力を付与する回転手段とを具備してい
る。以下、主要な各部について詳述する。<A> Overall Configuration of Multi-Screw Conveyor FIG. 1 is a longitudinal sectional view of the multi-screw conveyor. The multi-screw conveyor includes a main driving screw 10, a driven screw 20 disposed in parallel with the main driving screw 10, an outer cylinder 30 for covering both of the screws 10, 20, and a double screw 1.
And a rotating means for applying a rotating force to 0 and 20. Hereinafter, the main components will be described in detail.

【０００９】〈ロ〉スクリュー 主動スクリュー１０は回転軸１１と、回転軸１１の外周
面に螺旋状に設けた羽根１２とからなり、その排出口３
１に面した範囲の羽根１２が省略され、回転軸１１の排
出口３１の後端（図面右側）に隔壁機能を持った環状羽
根１３が形成されている。従動スクリュー２０も同様
に、回転軸２１と、回転軸２１の外周面に螺旋状に設け
た羽根２２とからなり、その排出口３１に面した範囲の
羽根２２が省略され、回転軸２１の排出口３１の後端
（図面右側）に隔壁機能を持った環状羽根２３が形成さ
れている。<B> Screw The main driving screw 10 comprises a rotating shaft 11 and a blade 12 spirally provided on the outer peripheral surface of the rotating shaft 11.
The blade 12 in the range facing 1 is omitted, and an annular blade 13 having a partition function is formed at the rear end (right side in the drawing) of the discharge port 31 of the rotating shaft 11. Similarly, the driven screw 20 includes a rotating shaft 21 and a blade 22 spirally provided on the outer peripheral surface of the rotating shaft 21, and the blade 22 in a range facing the discharge port 31 is omitted. An annular blade 23 having a partition function is formed at the rear end (right side in the drawing) of the outlet 31.

【００１０】各スクリュー１０，２０はその羽根１２，
２２の形成方向が相互に反対に形成されていると共に、
各羽根１２，２２の周端面が対向する羽根２２，１２の
側面に当接又は近接している。Each screw 10, 20 has a blade 12,
22 are formed in opposite directions,
The peripheral end surfaces of the blades 12, 22 are in contact with or close to the side surfaces of the facing blades 22, 12.

【００１１】これは、各羽根１２，２２に付着した土
砂を相手の羽根１２，２２で掻き落とす機能と、両羽
根１２，２２間で礫等の塊粒体を破砕する機能と、各
羽根１２，２２間にシール機能と、両羽根１２，２２
間で搬送物を撹拌混合する機能の多くの機能を付与する
ためである。This has the function of scraping off the earth and sand adhering to each of the blades 12, 22 with the counterpart blades 12, 22, the function of crushing agglomerates such as gravel between the two blades 12, 22, and the function of , 22 and the two blades 12, 22
This is for imparting many functions of stirring and mixing the conveyed material therebetween.

【００１２】また、図２に示すように各スクリュー１
０，２０の回転軸１１，２１の周面に、止水装置である
弾力層１４，２４が形成され、羽根１２，２２の周端面
がこれらの各弾力層１４，２４に近接又は当接若しくは
弾接している。これにより、外筒３内に回転軸１１，２
１と羽根１２，２２とにより仕切られたシール性の高い
複数の室３３が形成される。Further, as shown in FIG.
Elastic layers 14 and 24 as water stop devices are formed on the peripheral surfaces of the rotation shafts 11 and 21 of 0 and 20. The peripheral end surfaces of the blades 12 and 22 are close to or in contact with these elastic layers 14 and 24 or I'm in tandem. As a result, the rotating shafts 11 and
A plurality of chambers 33 having a high sealing property are defined by the first and blades 12 and 22.

【００１３】弾力層１４，２４は各スクリュー１０，２
０の回転軸１１，２１と羽根１２，２２の接触部のシー
ル性を確保することと、これらの部材１１，２２及び１
２，２１間に塊粒体が介在したときに回転軸１１，２１
側が弾性変形して塊粒体の噛み込みを回避するための、
例えばゴムや樹脂等の弾性材で構成されている。その他
に弾力層１４，２４は、各スクリュー１０，２０の製造
公差を吸収するためにも機能する。弾力層１４，２４は
摩耗時に交換できるように例えば貼着等の手段により取
り付けられる。The elastic layers 14 and 24 are provided with respective screws 10 and 2
0 to ensure the sealing properties of the contact portions between the rotating shafts 11, 21 and the blades 12, 22;
When the agglomerates intervene between the rotating shafts 21 and 21,
The side is elastically deformed to avoid biting of the agglomerates,
For example, it is made of an elastic material such as rubber or resin. In addition, the elastic layers 14 and 24 also function to absorb manufacturing tolerances of the screws 10 and 20. The elastic layers 14 and 24 are attached by means of, for example, bonding so that they can be replaced when worn.

【００１４】尚、弾力層１４，２４の軸方向の全長やそ
の素材、層厚等については搬送物の種類や性状に応じて
適宜選択する設計的事項であり、本実施の形態に限定さ
れるものではない。The total length of the elastic layers 14 and 24 in the axial direction, their materials, layer thicknesses, and the like are design items that are appropriately selected according to the type and properties of the conveyed object, and are limited to this embodiment. Not something.

【００１５】〈ハ〉外筒 外筒３０は、少なくとも両スクリュー１０，２０の重合
部を覆う範囲の断面形状が羽根１２，２２の外郭と同形
の瓢箪形を呈していて、その周面の一部に排出口３１が
開設されている。主動スクリュー１０のみを覆う単筒３
２には図示しない搬入口が形成されている。<C> Outer Cylinder The outer cylinder 30 has a gourd-shaped cross section in a range that covers at least the overlapping portion of the screws 10 and 20 and has the same shape as the outer shell of the blades 12 and 22. The outlet 31 is opened in the section. Single cylinder 3 covering only driving screw 10
2, a carry-in port (not shown) is formed.

【００１６】〈ニ〉回転手段 主動スクリュー１０の回転軸１１の基端（右端）にはモ
ータ４０が接続している。前記回転軸１１及び従動スク
リュー２０の回転軸１１には相互に噛合するギア１５、
２５が設けられ、主動スクリュー１０に付与したモータ
４０の回転力を逆方向の回転力として従動スクリュー２
０へ伝達できるようになっている。<D> Rotating means A motor 40 is connected to the base end (right end) of the rotating shaft 11 of the driving screw 10. A gear 15 meshing with the rotating shaft 11 and the rotating shaft 11 of the driven screw 20;
25, the rotational force of the motor 40 applied to the driving screw 10 is used as the rotational force in the opposite direction.
0 can be transmitted.

【００１７】[0017]

【作用】つぎに多軸スクリューコンベアによる搬送作用
について説明する。The operation of the multi-screw conveyor will now be described.

【００１８】図１のモータ４０を駆動させると、主動ス
クリュー１０が一方向に回転する。主動スクリュー１０
の回転がギア１５，２５を経由して従動スクリュー２０
へ伝わり、従動スクリュー２０が逆方向に回転する。主
動スクリュー１０は塊粒体５０の混じった搬送物５１を
両スクリュー１０，２０の重合範囲へ向けて搬送する。
両スクリュー１０，２０の重合範囲に区画して形成され
た室３３内に搬送物５１が取り込まれると、主動スクリ
ュー１０の回転に伴い搬出口３１へ向けて搬送され、排
出口３１から排出される。When the motor 40 shown in FIG. 1 is driven, the driving screw 10 rotates in one direction. Drive screw 10
Of the driven screw 20 via the gears 15 and 25
And the driven screw 20 rotates in the opposite direction. The driving screw 10 conveys the conveyed material 51 containing the agglomerates 50 toward the polymerization range of the two screws 10 and 20.
When the conveyed material 51 is taken into the chamber 33 formed in the overlapping area of the two screws 10 and 20, the conveyed material 51 is conveyed toward the discharge port 31 with the rotation of the driving screw 10 and discharged from the discharge port 31. .

【００１９】両スクリュー１０，２０間を通過する際、
搬送物５１中の塊粒体５０が、例えば図３に示すように
主動スクリュー１０の回転軸１１と従動スクリュー２０
の羽根２２間に噛み込むと、前記回転軸１１を覆う弾力
層１４が弾性変形して塊粒体５０を小さな抵抗で通過さ
せる。When passing between the two screws 10, 20,
For example, as shown in FIG. 3, the lump 50 in the conveyed material 51 includes the rotating shaft 11 of the driving screw 10 and the driven screw 20.
And the elastic layer 14 covering the rotating shaft 11 is elastically deformed to allow the massive particles 50 to pass with a small resistance.

【００２０】また、塊粒体５０が通過すると、弾力層１
４が自己弾性により復元して従動スクリュー２０の羽根
２２との間に高いシール性を回復する。When the lump 50 passes, the elastic layer 1
4 recovers by self-elasticity and recovers a high sealing property between the driven screw 20 and the blade 22.

【００２１】尚、主動スクリュー１０の羽根１２と従動
スクリュー２０の回転軸２１間に塊粒体５０が噛み込ん
だ場合も、弾力層２４が前記弾力層１４と同様に作用す
るため、弾力層２４の作用についての説明を省略する。When the mass 50 is caught between the blade 12 of the driving screw 10 and the rotating shaft 21 of the driven screw 20, the elastic layer 24 acts in the same manner as the elastic layer 14, so that the elastic layer 24 The description of the operation of is omitted.

【００２２】また、一方の羽根１２の側面に他方の羽根
２２の周端面が当接しているので、この間に塊粒体が入
り込むと粉砕される。Further, since the peripheral end surface of the other blade 22 is in contact with the side surface of one of the blades 12, when the agglomerates enter during this time, they are crushed.

【００２３】[0023]

【発明の実施の形態２】前記実施の形態は、両スクリュ
ー１０，２０の回転軸１１，２１に弾力層１４，２４を
設ける場合について説明したが、主動スクリュー１の回
転軸１１のみに弾力層１４を設けるようにしてもよい。[Embodiment 2] In the above embodiment, the case where the elastic layers 14 and 24 are provided on the rotating shafts 11 and 21 of the two screws 10 and 20 has been described. 14 may be provided.

【００２４】[0024]

【発明の実施の形態３】図４〜６は止水装置の他の形態
を示す。本例はスクリュー１０，２０の回転軸１１，２
２の周囲に、可撓性を有するばね鋼等の複数の帯板１
６，２６を交換可能な構造で植設し、これらの各帯板１
６，２６を対抗する羽根１２，２２に当接又は弾接させ
て止水性を確保できる構造になっている。図示しない塊
粒体はこれらの各帯板１６，２６を弾性変形して通過す
ることになる。Third Embodiment FIGS. 4 to 6 show other embodiments of the water stopping device. In this example, the rotating shafts 11 and 12 of the screws 10 and 20 are used.
Around a plurality of strips 1 made of flexible spring steel or the like
6, 26 are implanted in a replaceable structure, and each of these strips 1
The structure is such that water stoppage can be secured by abutting or elastic contact of the blades 6, 26 with the opposing blades 12, 22. Lumps (not shown) pass through these strips 16 and 26 after being elastically deformed.

【００２５】また、帯板１６，２６の板面にワイヤ製の
ブラシを設けると、スクリュー１０，２０間の止水性が
より向上する。また、図５，６に帯板１６，２６の設置
形態を示すが、両帯板１６，２６は同一であるので、一
方の帯板１６についてのみ説明する。図５は帯板１６を
回転軸１１の軸芯と平行に向けて複数設置した場合を示
し、図６は回転軸１１の軸芯に対して斜め方向（螺旋状
を含む）に向けて設置した場合を示す。Further, if a wire brush is provided on the plate surfaces of the band plates 16 and 26, the water stopping property between the screws 10 and 20 is further improved. FIGS. 5 and 6 show how the strips 16 and 26 are installed. Since both strips 16 and 26 are the same, only one strip 16 will be described. FIG. 5 shows a case where a plurality of strip plates 16 are installed in parallel with the axis of the rotating shaft 11, and FIG. 6 shows an example in which the strips 16 are installed in an oblique direction (including a spiral shape) with respect to the axis of the rotating shaft 11. Show the case.

【００２６】[0026]

【発明の実施の形態４】多軸スクリューコンベアをシー
ルドマシンの排土手段として用いた場合は、止水性が高
いことから、大断面、大深度トンネルの施工に好適であ
るうえに、これまでの圧力調整用のバルブやポンプを設
ける必要がない。また、多軸スクリューコンベアは一般
土砂の搬送に適用できる他、搬送対象は土砂以外であっ
てもよい。 また多軸スクリューコンベアの向きは横向
き斜め、或いは縦向きも可能であり、その向きに制約を
受けない。[Embodiment 4] When a multi-screw conveyor is used as a soil discharging means of a shield machine, it has a high water-stopping property, so that it is suitable for construction of a large cross section and a large depth tunnel, There is no need to provide pressure regulating valves or pumps. In addition, the multi-screw conveyor can be applied to the transport of general earth and sand, and the object to be transported may be other than earth and sand. The direction of the multi-screw conveyor can be horizontal, oblique or vertical, and there is no restriction on the direction.

【００２７】[0027]

【発明の効果】本発明はつぎの効果が得られる。 〈イ〉 羽根と対抗する回転軸の周面に設けた止水装置
が弾性変形するので、搬送物に塊粒体が混入していても
円滑に搬送できる。 〈ロ〉 止水装置が弾力性を有することから、スクリュ
ーを荒い精度で製造しても高いシール性を確保でき、ス
クリューの製造が容易となる。 〈ハ〉 多軸スクリューコンベア内に止水装置を内蔵す
るだけで、外部に突出した追加物が存在しない。そのた
め、多軸スクリューコンベアの占有面積が増大せずに済
み、矮小な空間に設置する場合に有利である。 〈ニ〉 羽根と回転時軸間の抵抗が小さくなるので、ス
クリューの回転力が小さくて済むうえに、スクリューの
摩耗を低減できる。 〈ホ〉 各種の用途に適用でき、汎用性に富む。 〈ヘ〉 止水性が高いため、土砂の鉛直搬送に適用する
こともでき、汎用性に富む。 〈ト〉 多軸スクリューコンベアはシールドマシンに適
用した場合は、切羽の土圧管理や止水が容易となること
の他に、切羽の高水圧による噴発の防止等多くの利点が
ある。According to the present invention, the following effects can be obtained. <B> Since the water stop device provided on the peripheral surface of the rotating shaft opposed to the blade is elastically deformed, the conveyed material can be smoothly conveyed even if agglomerated particles are mixed. <B> Since the water stopping device has elasticity, a high sealing property can be ensured even when the screw is manufactured with rough accuracy, and the screw can be easily manufactured. <C> There is no additional thing protruding outside, only the water stop device is built in the multi-screw screw conveyor. Therefore, the area occupied by the multi-screw screw conveyor does not need to be increased, which is advantageous when the multi-screw conveyor is installed in a small space. <D> Since the resistance between the blade and the rotating shaft is reduced, the rotating force of the screw can be reduced, and the wear of the screw can be reduced. <E> Applicable to various uses and rich in versatility. <F> Due to its high water-blocking properties, it can be applied to vertical transport of earth and sand, and is highly versatile. <G> When a multi-screw screw conveyor is applied to a shield machine, there are many advantages such as easy management of face pressure on the face and prevention of water stoppage, and prevention of spout due to high water pressure on the face.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 多軸スクリューコンベアの縦断面図FIG. 1 is a longitudinal sectional view of a multi-screw screw conveyor.

【図２】 図１におけるII−IIの断面図FIG. 2 is a sectional view taken along line II-II in FIG.

【図３】 要部の拡大断面図FIG. 3 is an enlarged sectional view of a main part.

【図４】 他の止水装置を具備した多軸スクリューコン
ベアの部分断面図FIG. 4 is a partial sectional view of a multi-screw conveyor provided with another water stop device.

【図５】 止水装置の設置例を示す説明図FIG. 5 is an explanatory view showing an installation example of a water stop device.

【図６】 止水装置の設置例を示す説明図FIG. 6 is an explanatory view showing an installation example of a water stop device.

【符号の説明】[Explanation of symbols]

１０ 主動スクリュー １１ 回転軸 １２ 羽根 １３ 環状羽根 １４ 弾力層（止水装置） １５ ギア １６ 帯板 ２０ 従動スクリュー ２１ 回転軸 ２２ 羽根 ２３ 環状羽根 ２４ 弾力層（止水装置） ２５ ギア ２６ 帯板（止水装置） ３０ 外筒 ３１ 排出口 ３２ 単筒 ４０ モータ Reference Signs List 10 main screw 11 rotating shaft 12 blade 13 annular blade 14 elastic layer (water stopping device) 15 gear 16 band plate 20 driven screw 21 rotating shaft 22 blade 23 annular blade 24 elastic layer (water stopping device) 25 gear 26 band plate (stop) Water device) 30 Outer cylinder 31 Discharge port 32 Single cylinder 40 Motor

フロントページの続き (72)発明者 金子 迪弌 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 (72)発明者 金子 研一 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 (72)発明者 北山 仁志 愛知県知多市北浜町11番１号 石川島播磨 重工業株式会社愛知工場内 (72)発明者 外山 良成 東京都江東区豊洲３丁目１番15号 石川島 播磨重工業株式会社内Continuing on the front page (72) Inventor Kazuo Kaneko, Taisei Construction Co., Ltd. 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (72) Inventor Kenichi Kaneko 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction (72) Inventor Hitoshi Kitayama 11-1, Kitahama-cho, Chita-shi, Aichi Prefecture Ishikawajima-Harima Heavy Industries, Ltd.Aichi Factory (72) Inventor Yoshinari Toyama 3-1-15-1 Toyosu, Koto-ku, Tokyo Ishikawajima-Harima Heavy Industries In company

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 回転軸の周面に螺旋条の羽根を設けて
構成されるスクリューを外筒内に収容したスクリューコ
ンベアにおいて、 前記外筒内に主動スクリューを回転自在に収容すると共
に、 前記主動スクリューと平行でかつ逆方向に回転する従動
スクリューを配置し、 前記各スクリューの各羽根を相互に逆向きに形成し、 一方のスクリューの羽根の側面に他方の羽根の周端面が
当接又は近接し、 スクリューの回転軸の周面に、対向するスクリューの羽
根と当接又は近接する止水装置を設けたことを特徴とす
る、 多軸スクリューコンベア。1. A screw conveyor in which a screw formed by providing spiral blades on a peripheral surface of a rotating shaft is accommodated in an outer cylinder, wherein a driving screw is rotatably accommodated in the outer cylinder, and A driven screw that is parallel to the screw and rotates in the opposite direction is disposed, and the blades of each screw are formed in opposite directions to each other, and the peripheral end surface of the other blade is in contact with or close to the side surface of the blade of one screw. A multi-screw conveyor, wherein a water-stop device is provided on a peripheral surface of a rotating shaft of the screw so as to abut or approach a blade of the opposite screw. 【請求項２】 請求項１に記載の多軸スクリューコン
ベアにおいて、止水装置を一方のスクリューの回転軸に
設けたことを特徴とする、多軸スクリューコンベア。2. The multi-screw conveyor according to claim 1, wherein a water stop device is provided on a rotating shaft of one of the screws. 【請求項３】 請求項１に記載の多軸スクリューコン
ベアにおいて、止水装置を両スクリューの回転軸に設け
たことを特徴とする、多軸スクリューコンベア。3. The multi-screw conveyor according to claim 1, wherein a water stop device is provided on the rotating shafts of both screws. 【請求項４】 請求項１〜３のいずれかに記載の多軸
スクリューコンベアにおいて、止水装置が回転軸の周面
に被覆した弾力層で構成することを特徴とする、多軸ス
クリューコンベア。4. The multi-screw conveyor according to claim 1, wherein the water stopping device comprises an elastic layer covering the peripheral surface of the rotating shaft. 【請求項５】 請求項１〜３のいずれかに記載の多軸
スクリューコンベアにおいて、止水装置が回転軸の周面
に植設した複数の帯板で構成することを特徴とする、多
軸スクリューコンベア。5. The multi-shaft screw conveyor according to claim 1, wherein the water stopping device is constituted by a plurality of strips implanted on a peripheral surface of the rotating shaft. Screw conveyor. 【請求項６】 請求項１〜５のいずれかに記載の多軸
スクリューコンベアにおいて、止水装置が交換可能であ
ることを特徴とする、多軸スクリューコンベア。6. The multi-screw conveyor according to claim 1, wherein a water-stop device is replaceable. 【請求項７】 請求項５に記載の多軸スクリューコン
ベアにおいて、前記帯板に弾力性を有するブラシを設け
たことを特徴とする、多軸スクリューコンベア。7. The multi-screw conveyor according to claim 5, wherein an elastic brush is provided on the strip.
JP07895797A 1997-03-13 1997-03-13 Multi-axis screw conveyor Expired - Fee Related JP3886200B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07895797A JP3886200B2 (en) 1997-03-13 1997-03-13 Multi-axis screw conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07895797A JP3886200B2 (en) 1997-03-13 1997-03-13 Multi-axis screw conveyor

Publications (2)

Publication Number Publication Date
JPH10252392A true JPH10252392A (en) 1998-09-22
JP3886200B2 JP3886200B2 (en) 2007-02-28

Family

ID=13676383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP07895797A Expired - Fee Related JP3886200B2 (en) 1997-03-13 1997-03-13 Multi-axis screw conveyor

Country Status (1)

Country Link
JP (1) JP3886200B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013067748A1 (en) * 2011-01-12 2013-05-16 孙长顺 Spring strip type conveyance method
CN105548504A (en) * 2016-01-29 2016-05-04 天津大学 Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process
CN106429254A (en) * 2016-11-16 2017-02-22 安鹏鹏 Spiral conveying shaft for alkali feeder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013067748A1 (en) * 2011-01-12 2013-05-16 孙长顺 Spring strip type conveyance method
CN105548504A (en) * 2016-01-29 2016-05-04 天津大学 Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process
CN106429254A (en) * 2016-11-16 2017-02-22 安鹏鹏 Spiral conveying shaft for alkali feeder

Also Published As

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