JPS5810525B2 - Continuous sand supply device for sand pile making equipment - Google Patents

Description

【発明の詳細な説明】 軟弱地盤中に砂杭を造成する場合、従来は砂杭造成用中
空管をその頭部に設けた起振機によって所定深度まで打
ち込んだ後、該中空管内に所定量の砂を投入して圧縮空
気を吹込み、起振機の振動と他の適宜の方法を併用して
砂を締固めながら地盤中へ押し出し、中空管を少しづつ
引抜いて行く方法が行なわれており、この場合、中空管
の太さや圧縮空気の圧力等の関係で中空管内への砂の投
入は数回に分けて行なわなければならず、そのたびに中
空管内の圧縮空気の放出→砂投入→圧縮空気の再吹込み
を繰返す必要があり、この間は砂杭の造成が中断されて
相当のロスタイムとなると共に圧縮空気の消費量も犬で
あった。[Detailed Description of the Invention] When constructing sand piles in soft ground, conventionally, a hollow pipe for sand pile construction is driven to a predetermined depth using an exciter installed at the head of the sand pile, and then a sand pile is placed in the hollow pipe. The method is to put in a certain amount of sand, blow in compressed air, and use vibration from an exciter and other appropriate methods to compact the sand and push it into the ground, and then pull out the hollow tube little by little. In this case, sand must be poured into the hollow tube several times due to the thickness of the hollow tube and the pressure of the compressed air, and each time the compressed air in the hollow tube must be released. It was necessary to repeat the process of → adding sand → re-injecting compressed air, and during this time the construction of sand piles was interrupted, resulting in considerable loss time and the amount of compressed air consumed was also low.

本発明は中空管内の圧縮空気を放出することなく連続的
に砂を中空間内に供給することができ、これにより砂杭
造成に要する時間を極めて短縮すると共に、従来よりも
均質な砂杭を提供し得る砂連続供給装置に関するもので
ある。The present invention allows sand to be continuously supplied into the hollow space without releasing the compressed air inside the hollow tube, thereby significantly shortening the time required to construct sand piles and producing sand piles that are more homogeneous than before. The present invention relates to a continuous sand supply device that can be provided.

次に、本発明の実施例を図面によって説明する。Next, embodiments of the present invention will be described with reference to the drawings.

１は頭部に起振機２を備えた砂杭造成用中空管で、その
上側部には圧縮空気送入管３及び同排出管４が取り付け
られ、また下部には砂締固め装置１０が設けられ、中空
管１は台船又は基台５に立設されたリーダ−６頂部に設
けられた複数個の滑車７に掛けられたワイヤーロープ８
に吊持されて台車５↓に設置した主ウィンチ９により昇
降自在に構成されている。Reference numeral 1 denotes a hollow pipe for sand pile construction equipped with an exciter 2 at the head, a compressed air inlet pipe 3 and a compressed air discharge pipe 4 are attached to the upper part, and a sand compaction device 10 is attached to the lower part. The hollow tube 1 is connected to a wire rope 8 which is hung around a plurality of pulleys 7 provided at the top of a leader 6 erected on a barge or base 5.
The main winch 9 is suspended from the carriage 5↓ and is movable up and down.

１１は内側を上下に３室に仕切られた砂貯蔵箱で、前記
中空管１に近接して吊り下げられ、中空管１と同時に同
距離を昇降するように中空間１を吊持するワイヤーロー
プ８とは別のワイヤーロープ１２に吊持され、該ワイヤ
ーロープ１２の基端部はリーダ−６頂部の他の複数の滑
車１３を経てその基端部は前記主ウィンチ９の中空管１
昇降用ドラムと同軸の別ドラムに連結されている。Reference numeral 11 denotes a sand storage box whose inside is partitioned into three chambers vertically, which is suspended close to the hollow tube 1, and suspends the hollow space 1 so that it moves up and down the same distance at the same time as the hollow tube 1. The wire rope 12 is suspended by a wire rope 12 different from the wire rope 8, and the base end of the wire rope 12 passes through a plurality of pulleys 13 on the top of the leader 6, and the base end is connected to a hollow tube of the main winch 9. 1
It is connected to another drum coaxial with the lifting drum.

上下に３室に仕切られた砂貯蔵箱１１の王室１４、中間
室１５及び王室１６の底面はそれぞれ摺鉢形又は逆角錐
形に形成され、その各最下底部は開口されて各室は連通
可能となっており、上室１４は上部を開口して後述する
砂パケット３９から供給される砂の受取口１７が形成さ
れ、その下底連通口１８は砂貯蔵箱１１頭部に設置した
油圧又は空圧シリンダー１９のロッド２０先端部に取り
付けた第１弁２１によって開閉自在に構成されている。The bottom surfaces of the royal chamber 14, middle chamber 15, and royal chamber 16 of the sand storage box 11, which are divided into three vertical chambers, are each formed in a mortar shape or an inverted pyramid shape, and each of the lowest bottoms is opened so that each chamber can communicate with each other. The upper chamber 14 is opened at the top to form a receiving port 17 for sand supplied from a sand packet 39 (described later), and the lower bottom communication port 18 is connected to a hydraulic or It is configured to be openable and closable by a first valve 21 attached to the tip of a rod 20 of the pneumatic cylinder 19.

また、中間室１５は上方を前記上室１４底面によって仕
切られ、下底面の連通口２２は砂貯蔵箱１１下側に設置
した油圧又は空圧シリンダー２３のロッド２４先端部に
取り付けた第２弁２５によって開閉自在に構成されてい
る。The intermediate chamber 15 is partitioned upward by the bottom surface of the upper chamber 14, and the communication port 22 on the bottom surface is connected to a second valve attached to the tip of a rod 24 of a hydraulic or pneumatic cylinder 23 installed below the sand storage box 11. 25 so that it can be opened and closed freely.

また、王室１６は上方を前記中間室１５底面によって仕
切られ、その下底面の連通ロ２６下側には回転速度を調
節可能なロータリーフィーダー２７が設けられて王室１
６と中空管１上側部とを連通可能に連結した可撓チュー
ブ２８を介して下室１６内の砂を中空管１内に送り込む
ようになっている。Further, the upper part of the royal room 16 is partitioned by the bottom surface of the intermediate chamber 15, and a rotary feeder 27 whose rotational speed can be adjusted is provided below the communication hole 26 on the lower bottom surface of the royal room 16.
The sand in the lower chamber 16 is fed into the hollow tube 1 through a flexible tube 28 which connects the upper part of the hollow tube 1 and the lower chamber 16 so as to communicate with each other.

２９は中間室１５内へ圧縮空気を吹き込むだめの電磁弁
３０を備えれ給気管、３１は中間室１５の圧縮空気を排
出するだめの電磁弁３２を備えた排気管であり、また下
室１６には電磁弁３３を備えた給気管３４が接続されて
いる。29 is an air supply pipe equipped with a solenoid valve 30 for blowing compressed air into the intermediate chamber 15; 31 is an exhaust pipe equipped with a solenoid valve 32 for discharging compressed air from the intermediate chamber 15; An air supply pipe 34 equipped with a solenoid valve 33 is connected to.

３５．３６はそれぞれ中間室１５及び王室１６内に挿入
された砂量満杯検知器、３７．３８はそれぞれ砂残量検
知器である。35 and 36 are sand amount full detectors inserted into the intermediate chamber 15 and the royal chamber 16, respectively, and 37 and 38 are sand remaining amount detectors, respectively.

３９はワイヤーロープ４０に吊持されウィンチ４１によ
りリーダー６に沿って高速で昇降するパケットで、ベル
トコンベヤー４２で運ばれて来る砂を貯める台船５上の
砂箱４３から砂が供給され、該パケット３９の下方側面
に取り付けた遠隔操作によって開閉自在の蓋４４を開け
ることにより、任意の位置に吊持された砂貯蔵箱１１の
上室１４の砂受取口１７へ砂を流し込むようになってい
る。A packet 39 is suspended by a wire rope 40 and moved up and down at high speed along the leader 6 by a winch 41. Sand is supplied from a sand box 43 on a barge 5 that stores sand carried by a belt conveyor 42. By opening the lid 44 which can be opened and closed by remote control attached to the lower side of the packet 39, sand can be poured into the sand receiving port 17 of the upper chamber 14 of the sand storage box 11 suspended at an arbitrary position. There is.

次に、本発明装置の操作を説明すると、まず中空管１を
起振機２により軟弱地盤の所定深度まで打込み、この間
中空管１内には送入管３から圧縮空気が吹き込まれてお
り、以後中空管１を引き抜いて行くときも加圧状態が維
持される。Next, to explain the operation of the device of the present invention, first, the hollow tube 1 is driven into soft ground by the exciter 2 to a predetermined depth. During this time, compressed air is blown into the hollow tube 1 from the feed pipe 3. The pressurized state is maintained even when the hollow tube 1 is subsequently pulled out.

砂貯蔵箱１１は中空管１の打込みと同時に同距離を降下
し、王室１６内には給気管３４から圧縮空気が送入され
て常に中空管１内の空気圧と同圧となるように調整する
。The sand storage box 11 is lowered by the same distance at the same time as the hollow tube 1 is driven, and compressed air is fed into the royal house 16 from the air supply pipe 34 so that the pressure is always the same as the air pressure inside the hollow tube 1. adjust.

砂貯蔵箱１１の上室１４内には常に砂が貯められ、砂が
減少すると前記パケット３９が繰り返し昇降して上室１
４へ砂を補充するようにする。Sand is always stored in the upper chamber 14 of the sand storage box 11, and when the amount of sand decreases, the packet 39 is repeatedly raised and lowered to fill the upper chamber 1.
Make sure to replenish sand to step 4.

しかして、任意の時点で遠隔操作により砂貯蔵箱１１頭
部のシリンダー１９を作動させて王室１４底部の第１弁
２１を開いて王室１４内の砂を中間室１５内へ落下させ
、中間室１５内の満杯検知器３５により所定量の砂が落
下したことを確認するとこれに応動して直ちに第１弁２
１が閉じる。Therefore, at any time, the cylinder 19 at the head of the sand storage box 11 is operated by remote control to open the first valve 21 at the bottom of the royal chamber 14 to cause the sand in the royal chamber 14 to fall into the intermediate chamber 15. When the fullness detector 35 inside the valve 15 confirms that a predetermined amount of sand has fallen, the first valve 2 immediately responds to this.
1 closes.

次いで、砂を収容した中間室１５内に電磁弁３０を開い
て給気管２９から圧縮空気を吹き込み、中間室１５内の
空気圧を王室１６内の空気圧と同圧（従って中空管１内
空気圧と同圧）又はそれ以上まで高める。Next, the solenoid valve 30 is opened and compressed air is blown into the intermediate chamber 15 containing sand from the air supply pipe 29, so that the air pressure in the intermediate chamber 15 is equal to the air pressure in the royal chamber 16 (therefore, the air pressure in the hollow tube 1 is the same as that in the chamber 16). the same pressure) or higher.

次に、砂貯蔵箱１１下側のシリンダー２３を遠隔操作に
より作動させて中間室１５底部の第２弁２５を開き、中
間室１５内の砂を全て下室１６内に流下させ、残量検知
器３７により中間室１５内に砂がなくなったことを確認
するとこれに応動して直ちに第２弁２５は閉じ、これと
同時に電磁弁３０が閉じて中間室１５内への給気が停止
されると共に中間室１５内に残留する圧縮空気は電磁弁
３２を開いて排気管３１から放出し、中間室１５内を再
び大気圧に戻して上室１４内の砂が送り込まれ、以後上
記の操作が繰り返される。Next, the cylinder 23 at the bottom of the sand storage box 11 is operated by remote control to open the second valve 25 at the bottom of the intermediate chamber 15, allowing all the sand in the intermediate chamber 15 to flow down into the lower chamber 16, and detecting the remaining amount. When it is confirmed by the container 37 that there is no sand in the intermediate chamber 15, the second valve 25 is immediately closed in response to this, and at the same time, the solenoid valve 30 is closed to stop the supply of air into the intermediate chamber 15. At the same time, the compressed air remaining in the intermediate chamber 15 is released from the exhaust pipe 31 by opening the electromagnetic valve 32, and the interior of the intermediate chamber 15 is returned to atmospheric pressure, and the sand in the upper chamber 14 is pumped in. From then on, the above operation is carried out. Repeated.

中空管１内と常に同圧に維持されている下室１６内に中
間室１５から流下した砂は王室１６下側のロータリーフ
ィーダー２７を電動又は油圧モーター（図示せず）によ
り回転させて可撓チューブ２８内を通って中空管１内に
送り込まれる。The sand flowing down from the intermediate chamber 15 into the lower chamber 16, which is always maintained at the same pressure as the inside of the hollow tube 1, can be fed by rotating a rotary feeder 27 on the lower side of the royal chamber 16 with an electric or hydraulic motor (not shown). It is fed into the hollow tube 1 through the flexible tube 28.

王室１６内には常に砂を貯えておけるように、王室１６
の容量は中間室１５よりも犬とした方が良く、下室１６
内の砂残量が減ってくると検知器３８により検知し、こ
れに応動して直ちに第２弁２５を開いて中間室１５から
砂を落下させる。In order to always store sand in the Royal Household 16,
It is better to have a dog capacity than the middle chamber 15, and the lower chamber 16
When the remaining amount of sand in the intermediate chamber 15 is reduced, the detector 38 detects this, and in response to this, the second valve 25 is immediately opened to cause the sand to fall from the intermediate chamber 15.

なお、中空管１内へ投入された砂量は中間室１５の満杯
検知器３５により中間室１５から工室１６ヘ移動した砂
量として記録計測するか、あるいは直接ロータリーフィ
ーダー２１の回転数により記録計測することが可能であ
る。The amount of sand fed into the hollow tube 1 can be recorded and measured by the fullness detector 35 in the intermediate chamber 15 as the amount of sand transferred from the intermediate chamber 15 to the processing room 16, or can be measured directly by the rotation speed of the rotary feeder 21. It is possible to record and measure.

以上の操作は全て運転室からの遠隔操作により自動的に
一連に作動することによって行なわれ、軟弱地盤に打込
まれた中空管１内の圧縮空気を一度も放出することなく
連続的にロータリーフィーダー２７によって砂が供給さ
れ、中空管１内の空気圧を維持しながら中空管１頭部の
起振機２の振動と下端部の締固め装置１０の作動により
砂を中空管１下方へ押し出しつつ中空管１を徐々に引き
抜いて行けば、軟弱地盤中には強固に締固められだ砂杭
が造成されていくのである。All of the above operations are performed by a series of automatic operations by remote control from the driver's cab, and the rotary rotation is performed continuously without releasing the compressed air inside the hollow tube 1 that has been driven into the soft ground. Sand is supplied by the feeder 27, and while maintaining the air pressure inside the hollow tube 1, the sand is pushed down the hollow tube 1 by the vibration of the exciter 2 at the head of the hollow tube 1 and the operation of the compaction device 10 at the lower end. By gradually pulling out the hollow pipe 1 while pushing it out, a firmly compacted sand pile will be created in the soft ground.

本発明は以上のように構成され、従来のように砂杭造成
用中空管内に砂を分割して投入し、その度に中空管内の
圧縮空気を排出し再び吹き込む操作を繰り返し、その間
は砂杭造成が中断されていたものとは異なり、本発明は
中空管内は常に加圧状態を維持して連続的に中空管内に
砂を投入できるから、中空管の給排気の時間が省略され
、極めて短時間で所定の砂杭を造成することができ、大
巾に作業能率を高めることができる。The present invention is constructed as described above, and as in the conventional method, sand is divided into parts and put into a hollow pipe for sand pile construction, and each time the compressed air in the hollow pipe is discharged and blown in again, and the operation is repeated. Unlike those in which construction was interrupted, the present invention allows sand to be continuously introduced into the hollow tube while maintaining a pressurized state at all times, so the time for supplying and exhausting the hollow tube is omitted, making it extremely time-saving. A specified sand pile can be created in a short time, greatly increasing work efficiency.

また、本発明によれば、砂杭造成速度に合せて砂量を調
節しながら中空管内に連続的に砂を投入することができ
、砂投入によっていちいち中断されることなく連続的に
砂杭を造成して行くから、造成される砂杭は砂を分割投
入する場合と異なって砂杭途中に節目ができたり、部分
的に粗密となつたりあるいは砂杭が途中で細くなったり
、切れたりする心配がなく、極めて均質の強固な砂杭を
提供することができる。Furthermore, according to the present invention, sand can be continuously introduced into the hollow pipe while adjusting the amount of sand in accordance with the sand pile construction speed, and the sand pile can be continuously inserted without being interrupted by each sand injection. Because the sand piles are created, unlike when the sand is poured in parts, the sand piles that are created may have joints in the middle, become coarse or dense in parts, or become thinner or break in the middle. It is possible to provide extremely homogeneous and strong sand piles without any worries.

さらに、砂貯蔵箱は中空管とは可撓チューブによって連
結されているだけで、それぞれ別体に吊持されているか
ら、中空管頭部の起振機の振動は砂貯蔵箱には伝達され
ないので、砂貯蔵箱の内外に取り付けられた多種の弁や
駆動機構も起振機の影響を受けて故障することもなく、
各部が確実に作動する効果があり、また圧縮空気の消費
量も従来に比して極めて少なくて済む等々種々の利点を
有する。Furthermore, the sand storage box is connected to the hollow tube only by a flexible tube, and each is suspended separately, so the vibration of the exciter at the hollow tube head does not affect the sand storage box. Since there is no transmission, the various valves and drive mechanisms installed inside and outside the sand storage box will not be affected by the exciter and malfunction.
It has various advantages such as ensuring that each part operates reliably, and the amount of compressed air consumed is extremely small compared to the conventional method.

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

第１図は本発明に係る砂杭造成装置における砂杭造成装
置を取り付けた状態の全体説明図、第２図は要部の拡大
断面図である。 符号説明、１……砂杭造成用中空管、２……起振機、３
……圧縮空気送入管、６……リーダー、８……ワイヤー
ロープ、９……主ウイつチ、１１……砂貯蔵箱、１２…
…ワイヤーロープ、１４…上室、１５……中間室、１６
……下室、１８……連通口、１９……シリンダー、２１
……第１弁、２２……連通口、２３……シリンダー、２
５……第２弁、２６……連通口、２７……ロータリーフ
イーダー、２８……可撓チユーブ、２９……給気管、３
１……排気管、３４……給気管、３９……パケツト、４
０……ワイヤーロープ、４１……ウィンチ、４３……砂
箱、４４……蓋。FIG. 1 is an overall explanatory diagram of the sand pile construction device according to the present invention in a state in which the sand pile construction device is attached, and FIG. 2 is an enlarged sectional view of the main parts. Description of symbols, 1...Hollow pipe for sand pile construction, 2...Exciter, 3
... Compressed air supply pipe, 6 ... Leader, 8 ... Wire rope, 9 ... Main switch, 11 ... Sand storage box, 12 ...
...Wire rope, 14...Upper chamber, 15...Middle chamber, 16
... lower chamber, 18 ... communication port, 19 ... cylinder, 21
...First valve, 22...Communication port, 23...Cylinder, 2
5...Second valve, 26...Communication port, 27...Rotary feeder, 28...Flexible tube, 29...Air supply pipe, 3
1... Exhaust pipe, 34... Air supply pipe, 39... Packet, 4
0... wire rope, 41... winch, 43... sand box, 44... lid.

Claims (1)

【特許請求の範囲】 １ 圧縮空気送入管を設けだ砂杭造成用中空管と同時に
同距離を昇降する砂貯蔵箱を該中空管に近接して吊持し
、該貯蔵箱内は上下に３室に仕切られ、その上室及び中
間室の下底連通口にはそれぞれ第１弁及び第２弁が設け
られ、下室の下底連通目下側にはロータリーフィーダー
が取り付けられて王室と中空管とは可撓チューブにより
下室内の砂を前記中空管内に送り込み可能に連結され、
中間室及び王室には圧縮空気給気管がそれぞれ接続され
ると共に該中間室には排気管が接続されて成ることを特
徴とする砂杭造成装置における砂連続供給装置。 ２ 前記中間室及び王室にはそれぞれ砂満杯検知器と砂
残量検知器が挿入され、該検知器の検知に応動して前記
上室及び中間室下底部の第１弁及び第２弁を開閉させる
シリンダーを前記砂貯蔵箱の頭部ならびに下側に設置し
て成る特許請求の範囲第１項記載の砂杭造成装置におけ
る砂連続供給装置。 ３ 起振機を頭部に取り付けた前記中空管と前記砂貯蔵
箱はそれぞれ別のワイヤーロープに吊持され、該ワイヤ
ーロープはそれぞれリーダー頂部に設けられた滑車を介
して主ウィンチの同軸別ドラムに連結され、また該リー
ダーには前記砂貯蔵箱の上室に砂を供給するパケットが
該リーダーに沿って高速で昇降可能に配置して成る特許
請求の範囲第１項又は第２項記載の砂杭造成装置におけ
る砂連続供給装置。[Claims] 1. A sand storage box is suspended close to the hollow pipe for sand pile construction, which is raised and lowered the same distance at the same time as the hollow pipe for sand pile construction, and a compressed air supply pipe is provided. It is divided into three upper and lower chambers, and the first and second valves are installed at the bottom communication ports of the upper and middle chambers, respectively, and a rotary feeder is attached to the lower side of the bottom communication port of the lower chamber. and the hollow tube are connected by a flexible tube so that sand in the lower chamber can be fed into the hollow tube,
1. A continuous sand supply device for a sand pile building device, characterized in that compressed air supply pipes are connected to the intermediate chamber and the royal chamber, and an exhaust pipe is connected to the intermediate chamber. 2. A full sand detector and a remaining sand detector are inserted into the intermediate chamber and the royal chamber, respectively, and the first and second valves at the lower bottom of the upper chamber and intermediate chamber are opened and closed in response to the detection by the detectors. 2. The continuous sand supply device for a sand pile building device according to claim 1, further comprising cylinders installed at the head and underside of the sand storage box. 3 The hollow tube with the exciter attached to the head and the sand storage box are each suspended from separate wire ropes, and the wire ropes are connected to the main winch coaxially via pulleys provided at the top of the leader. Claim 1 or 2, which is connected to a drum, and in which a packet for supplying sand to the upper chamber of the sand storage box is disposed on the leader so as to be movable up and down at high speed. Continuous sand supply device for sand pile construction equipment.