JPH0332976Y2 - - Google Patents
Info
- Publication number
- JPH0332976Y2 JPH0332976Y2 JP1986140180U JP14018086U JPH0332976Y2 JP H0332976 Y2 JPH0332976 Y2 JP H0332976Y2 JP 1986140180 U JP1986140180 U JP 1986140180U JP 14018086 U JP14018086 U JP 14018086U JP H0332976 Y2 JPH0332976 Y2 JP H0332976Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- winding drum
- winding
- casing
- sand
- 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
- 238000004804 winding Methods 0.000 claims description 28
- 239000004576 sand Substances 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 6
- 230000009191 jumping Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【考案の詳細な説明】
（考案が属する技術分野）
本考案は砂杭造成時のケーシング内の砂面のレ
ベルを検出する装置に関するものである。[Detailed description of the invention] (Technical field to which the invention belongs) The present invention relates to a device for detecting the level of sand within a casing during sand pile construction.
（考案の課題とその特徴点）
軟弱地盤中に砂杭を造成する場合は、地中の所
定深度まで貫入したケーシングを引き抜きつつ、
該ケーシングの下端から砂を排出して、順次、上
方に向かつて所定径の砂杭を造成してゆくが、こ
の砂杭造成工程中、砂杭の品質管理のためと、ケ
ーシング内砂補給時期の確認のために、ケーシン
グ内の砂量の変化を常時、検知する必要がある。(Problems with the design and its features) When constructing sand piles in soft ground, it is necessary to pull out the casing that has penetrated the ground to a specified depth.
The sand is discharged from the lower end of the casing and moved upward one by one to create a sand pile of a predetermined diameter. In order to confirm this, it is necessary to constantly detect changes in the amount of sand inside the casing.
ところで、ケーシング内に重錘を吊り下げ、該
重錘がケーシング内の砂面レベルの変動に追随し
て上下動するように巻取りドラムでワイヤの巻取
り・巻戻しを行い、巻取りドラムの回転角からワ
イヤの巻取り・巻戻し長さを検出して、ケーシン
グ内の砂面レベルの変化を検出するようにしたケ
ーシング内砂面検出装置は既知であるが（例えば
特公昭51−4569号公報参照）、このように巻取り
ドラムの回転角からワイヤの巻取り・巻戻し長さ
を検出する装置では、ワイヤが巻取りドラムに乱
巻きの状態、すなわち、ワイヤが巻取りドラムに
均一に巻かれないで１箇所にかたまつて巻かれた
状態になると、巻取りドラムの直径が変わつたの
と同じことになつて、検出値に誤差が生じ、検出
精度が低下する。 By the way, a weight is suspended inside the casing, and the wire is wound and unwound on the winding drum so that the weight moves up and down following fluctuations in the sand level inside the casing. A sand level detection device in a casing is known, which detects changes in the sand level in the casing by detecting the winding/unwinding length of the wire from the rotation angle (for example, Japanese Patent Publication No. 51-4569). In this way, with a device that detects the winding/unwinding length of the wire from the rotation angle of the winding drum, the wire is not wound randomly on the winding drum, that is, the wire is not evenly wound around the winding drum. If the winding is not wound but is wound in one place, this is the same as changing the diameter of the winding drum, causing an error in the detected value and lowering the detection accuracy.
前述のワイヤの乱巻きは、ワイヤの巻取り・巻
戻しを繰り返しているうちに起こる外、振動等に
よつてワイヤが跳上がることによつても生じる
が、本考案は、このワイヤの乱巻きを防止する手
段を備えたケーシング内砂面レベル検出装置を提
供することを目的としているものであつて、その
構成上の特徴は実用新案登録請求の範囲に記載し
たとおりである。 The aforementioned random winding of the wire occurs not only during repeated winding and unwinding of the wire, but also due to the wire jumping up due to vibrations, etc., but the present invention is capable of preventing this random winding of the wire. The object of the present invention is to provide a sand level detection device in a casing that is equipped with a means for preventing this, and its structural features are as described in the claims of the utility model registration.
なお、本考案でいう砂には砂利、砕石等の砂類
似物を含む。 Note that sand as used in the present invention includes sand analogues such as gravel and crushed stone.
（実施例の説明）
本考案装置が施されている砂杭造成装置の全体
図である第１図において、１はケーシング、２は
重錘、３はワイヤ、４は巻取りドラム、５は油圧
モータ、６はシンクロモータ、７は油圧ユニツ
ト、８は制御盤、９は記録計、１０はスイツチボ
ツクスである。(Description of Examples) In Fig. 1, which is an overall view of a sand pile making device to which the device of the present invention is applied, 1 is a casing, 2 is a weight, 3 is a wire, 4 is a winding drum, and 5 is a hydraulic pressure. 6 is a synchronized motor, 7 is a hydraulic unit, 8 is a control panel, 9 is a recorder, and 10 is a switch box.
巻取りドラム４は、例えば前掲特公昭51−4569
号公報に記載されているような態様で、重錘２が
ケーシング１内の砂面Ｓのレベル変動に追随して
上下動するようにワイヤ３の巻取り・巻戻しを行
い、この際のワイヤ３の巻取り・巻戻し長さを巻
取りドラム４の回転角から検出するのであるが、
この実施例では、図示しないが制御盤８内にポテ
ンシヨメータ付きのシンクロモータを設け、シン
クロモータ６から伝達された巻取りドラム４の回
転角を電気信号に変換している。 The winding drum 4 is manufactured by, for example, the above-mentioned Japanese Patent Publication No. 51-4569.
In the manner described in the publication, the wire 3 is wound and unwound so that the weight 2 moves up and down following the level fluctuation of the sand surface S in the casing 1. The winding/unwinding length of step 3 is detected from the rotation angle of the winding drum 4.
In this embodiment, although not shown, a synchro motor with a potentiometer is provided in the control panel 8, and the rotation angle of the winding drum 4 transmitted from the synchro motor 6 is converted into an electrical signal.
本考案では、第２図に示すように、巻取りドラ
ム４の外周面にらせん溝１１を設け、ワイヤ３が
このらせん溝に誘導されて巻取り・巻戻しされる
ようにし、また、巻取りドラム４に近接して抑え
ローラ１２を設け、ワイヤ３が振動等によつて跳
ね上がらないようにしている。 In the present invention, as shown in FIG. 2, a spiral groove 11 is provided on the outer peripheral surface of the winding drum 4, and the wire 3 is guided to the spiral groove to be wound and unwound. A restraining roller 12 is provided close to the drum 4 to prevent the wire 3 from jumping up due to vibration or the like.
らせん溝１１は、その断面を成るべく小さくす
る（ワイヤ３に成るべく小径のものを用いる）と
ともに、密に設けて、ワイヤ３の巻取りが１層で
済むようにするのが好ましい。 It is preferable that the helical groove 11 has a cross section as small as possible (the wire 3 is made as small as possible in diameter) and is provided densely so that the wire 3 only needs to be wound in one layer.
抑えローラ１２と巻取りドラム４との間の間隙
はワイヤ３の巻取り層の厚さに応じて定められる
が、図示の実施例では、ワイヤ３の巻取りが２層
に亘る場合も考慮して、抑えローラ１２の軸１３
の端部をブラケツト１４に設けた長孔（図示しな
い）に貫挿し、アジヤストボルト１５で抑えロー
ラ１２と巻取りドラム４との間の間隙を調節でき
るようにしている。 The gap between the holding roller 12 and the winding drum 4 is determined according to the thickness of the winding layer of the wire 3, but in the illustrated embodiment, the case where the wire 3 is wound in two layers is also taken into consideration. Then, the shaft 13 of the holding roller 12
The end of the bracket 14 is inserted into a long hole (not shown) provided in the bracket 14, and the gap between the holding roller 12 and the winding drum 4 can be adjusted using an adjusting bolt 15.
（考案の効果）
以上の説明から明らかなように、本考案の装置
では、巻取りドラムの外周面にワイヤ誘導用のら
せん溝を設けるとともに、巻取りドラムに近接し
てワイヤ跳上がり防止用の抑えローラを設けたの
で、検出精度の低下をもたらすワイヤの乱巻きを
有効・確実に防止することができる。(Effects of the invention) As is clear from the above explanation, in the device of the present invention, a spiral groove for guiding the wire is provided on the outer peripheral surface of the winding drum, and a spiral groove is provided in the vicinity of the winding drum to prevent the wire from jumping up. Since the restraining roller is provided, it is possible to effectively and reliably prevent the wire from winding randomly, which would lead to a decrease in detection accuracy.
図面は本考案の一実施例の説明図であつて、第
１図は本考案が施されている砂杭造成装置の全体
図、第２図は要部拡大図である。
１：ケーシング、２：重錘、３：ワイヤ、４：
巻取りドラム、１１：らせん溝、１２：抑えロー
ラ。
The drawings are explanatory diagrams of one embodiment of the present invention, and FIG. 1 is an overall view of a sand pile building apparatus to which the present invention is applied, and FIG. 2 is an enlarged view of the main parts. 1: Casing, 2: Weight, 3: Wire, 4:
Winding drum, 11: spiral groove, 12: holding roller.
Claims (1)
巻取りドラムの回転角から検出する形式のケーシ
ング内砂面レベル検出装置において、巻取りドラ
ムの外周面にワイヤ誘導用のらせん溝を設けると
ともに、巻取りドラムに近接してワイヤ跳上がり
防止用の抑えローラを設けたことを特徴とするケ
ーシング内砂面レベル検出装置。 In a casing inner sand surface level detection device that detects the winding and unwinding length of the wire that suspends the weight from the rotation angle of the winding drum, a spiral groove for guiding the wire is provided on the outer peripheral surface of the winding drum. A sand surface level detection device in a casing is further provided with a restraining roller for preventing the wire from jumping up close to the winding drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986140180U JPH0332976Y2 (en) | 1986-09-12 | 1986-09-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986140180U JPH0332976Y2 (en) | 1986-09-12 | 1986-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6347231U JPS6347231U (en) | 1988-03-30 |
| JPH0332976Y2 true JPH0332976Y2 (en) | 1991-07-12 |
Family
ID=31046784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986140180U Expired JPH0332976Y2 (en) | 1986-09-12 | 1986-09-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332976Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114907A (en) * | 1974-07-30 | 1976-02-05 | Kao Corp | TOMEISETSUKENSOSEIBUTSU |
-
1986
- 1986-09-12 JP JP1986140180U patent/JPH0332976Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114907A (en) * | 1974-07-30 | 1976-02-05 | Kao Corp | TOMEISETSUKENSOSEIBUTSU |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6347231U (en) | 1988-03-30 |
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