JPH0326699A - Boat lift device - Google Patents

Boat lift device

Info

Publication number
JPH0326699A
JPH0326699A JP16024989A JP16024989A JPH0326699A JP H0326699 A JPH0326699 A JP H0326699A JP 16024989 A JP16024989 A JP 16024989A JP 16024989 A JP16024989 A JP 16024989A JP H0326699 A JPH0326699 A JP H0326699A
Authority
JP
Japan
Prior art keywords
boat
sea
trolley
lifting
quay
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
JP16024989A
Other languages
Japanese (ja)
Other versions
JPH0733234B2 (en
Inventor
Norishige Kasuga
紀重 春日
Seiji Tomoe
友江 誠司
Yasuhiro Azuma
康弘 東
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.)
NIPPON AIKIYAN KK
Original Assignee
NIPPON AIKIYAN KK
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 NIPPON AIKIYAN KK filed Critical NIPPON AIKIYAN KK
Priority to JP1160249A priority Critical patent/JPH0733234B2/en
Publication of JPH0326699A publication Critical patent/JPH0326699A/en
Publication of JPH0733234B2 publication Critical patent/JPH0733234B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Forklifts And Lifting Vehicles (AREA)

Abstract

PURPOSE:To improve work efficiency by respectively liftably mounting lift frames, having a table possible to load a carriage with a boat mounted, to a supporting member in a plurality of booms which are secured to a turning frame and extended in a transverse direction. CONSTITUTION:For unloading a boat 17 on the sea 9 from a quay 1, a carriage 15, on which the boat is mounted, is previously loaded on a table 14, thereafter it is lifted to predetermined height along lift frames 10 by a winding winch 19, next by turning booms 6a, 6b with a turning frame 4, the boat 17 is lowered on the sea 9 by positioning the table 14 on the surface of water. While for loading the boat 17 on the ground from on the sea 9, work is performed by a procedure reverse to the above described. Thus, the service life of a device is increased as well as the work time required for lift work can be reduced.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は停泊港(マリーナ)におけるヨットまたはボー
トなどの舟艇を海上より陸上へ、あるいは陸上より海上
へ揚降させるための舟艇揚降装置に関するものである。 [従来の技術] 舟艇を娯楽の目的で海上を快走させるために、モータボ
ート、モータヨットと共に一般にヨットと呼ばれる帆走
式ヨットが用いられる。 これらヨットまたはボート等の舟艇は通常停泊港(マリ
ーナ)を有し、このマリーナにおいて、海上にある舟艇
を陸上へ収揚し、あるいは、陸上にある舟艇を海上にお
ろすために、従来、第4図から第7図に示すような舟艇
揚降装置が用いられている。 第4図はトロリ式舟艇揚降装置aを示し、岸壁bより水
面下へ2本1組の傾斜ガーダCを延設し、該傾斜ガーダ
C上に走行輪dを有するトロリeを載置しており、該ト
ロリeは舟艇rを搭載可能な台車9を載置できるように
なっている。 岸壁b上にはワイヤロープhを繰り出し巻き取り可能に
収納したウインチ1が設置され、前記ワイヤロープhの
繰り出し側端部は、トロリ0に係止されており、ウイン
チ1を運転することにより前記ワイヤロープhを繰り出
しまたは巻き取って、トロリeを揚降させるようにして
いる。 陸上にある舟艇rを海上に降ろす際には、予め台車9上
に舟艇rを搭載しておき、台車9を介して舟艇fをトロ
リe上に載置した後、トロリeを下降させて舟艇rを海
上に降ろす。 海上にある舟艇rを陸上に収揚する際には、予め台車9
を載置しておいたトロリeを水面下に下降させておき、
台車Q上に舟艇rを迎え入れた後、トロリeを引き揚げ
て舟艇rを台車9を介して収揚する。 第5図はプラットホーム式舟艇揚降装置jを示し、水面
上より水面下へ4本の支柱kを垂直に立設し、該支柱k
のうち、各2本ずつを水平に延びるガーダlを介して連
結し、該ガーダ1上にワイヤロープ厘を繰り出し巻き取
り可能に収納したウインチnを2台ずつ配設しており、
ウインチnより垂下したワイヤロープーの繰り出し側端
部にはプラットホーム0が水平に連結されている。 プラットホーム0上には、第4図に示す台車9が載置で
きるようになっており、ウインチnを運転することによ
り前記ワイヤローブ園を繰り出しまたは巻き取って、プ
ラットホーム0を揚降させるようにしている。 陸上にある舟艇rを海上に降ろす際には、予め台車9上
に舟艇rを搭載しておき、台車クを介して舟艇rをプラ
ットホーム。上に載置した後、プラットホーム0を下降
させて舟艇rを海上に降ろす。 海上にある舟艇rを陸上に収揚する際には、予め台車ク
を載置しておいたプラットホーム0を水面下に下降させ
ておき、台車9に舟艇rを迎え入れた後、プラットホー
ム0を上昇させて舟艇rを陸上に収揚する。 第6図及び第7図は旋回式舟艇揚降装置pを示し、岸壁
b上に垂直に立設した固定ポストqに、旋回フレーム『
を水平面内を回動し得るよう支承し、該旋回フレームr
に垂直に延びる昇降部材Sを摺動自在に嵌入するととも
に、昇降部材Sの下端部に第4図に示す台車9を載置可
能なテーブルtを形成している。 固定ポストqの上端には、ワイヤロープUを繰り出し巻
き取り可能に収納したウインチVが前記旋回フレームr
と同時に回勤するように配設され、ワイヤロープUの繰
り出し側端部はテーブルtに係止されており、ウインチ
Vを運転することにより前記ワイヤロープUを繰り出し
または巻き取ってテーブルtを揚降させるようにしてい
る。 陸上にある舟艇rを海上に降ろす際には、予め台車ク上
に舟艇rを搭載しておき、台車9を介して舟艇rをテー
ブルt上に載置した後、テーブルtを岸壁bの地表面よ
り引き揚げ、テーブルtを水面上へ回動させるとともに
水面下まで下降させて舟艇rを海上に降ろす。 海上にある舟艇rを陸上に収揚する際には、予め台車9
を載置しておいたテーブルtを水面下に下降させておき
、台車9上に舟艇rを迎え入れた後、テーブルtを岸壁
bの地表面よりも高く引き揚げ、テーブルtを岸壁b側
に回動させるとともに岸壁bの地表面まで下降させて舟
艇rを台車9を介して陸上に収揚する。 第8図は旋回式舟艇揚降装置pの作業サイクルを表わす
グラフであり、陸上にあるテーブルtを水面下に位置さ
せ、次いでテーブルtを再び陸上に戻す場合における装
置の作動と、その作業毎の所要時間をグラフ横軸方向に
、装置の可動状態をグラフ縦軸方向に示している。 図中、車止はテーブルtに台車9を固定するのに要する
時間く乗船及びエンジン起動は舟艇rを海上に降ろした
後に利用者が舟艇『に乗ってマリーナから出艇するのに
要する時間、進入位置合わせは水中に位置する台車クに
舟艇rを迎え入れるのに要する時間を表わしている。 第8図に示す如く、旋回式舟艇揚降装1fpにおいては
、陸上にある舟艇fを海上に降ろす下架時には521秒
、海上にある舟艇rを陸上に収損する上架時には556
秒が作業サイクルになっている。 よって旋回式舟艇揚降装置pを下架のみに使用すると、
その能力は は ?600 N− −■X 3 −19.4 (隻)/3時間556 となる。
The present invention relates to a watercraft lifting and lowering device for lifting and lowering a watercraft such as a yacht or a boat from the sea to land, or from land to sea at a mooring port (marina). [Background Art] In order to sail boats on the sea for recreational purposes, sailing yachts, generally called yachts, are used along with motor boats and motor yachts. These vessels such as yachts and boats usually have a berthing port (marina), and in this marina, conventionally a Boat lifting and lowering devices as shown in FIGS. 7 to 7 are used. Fig. 4 shows a trolley-type watercraft lifting and lowering device a, in which a set of two inclined girders C are extended below the water surface from a quay b, and a trolley e having running wheels d is placed on the inclined girders C. The trolley e can carry a cart 9 on which a boat r can be mounted. A winch 1 is installed on the quay b, and houses a wire rope h so as to be able to pay out and wind it up. The wire rope h is let out or wound up to raise and lower the trolley e. When lowering a boat r from land onto the sea, the boat r is placed on the trolley 9 in advance, and after the boat f is placed on the trolley e via the trolley 9, the trolley e is lowered and the boat is lowered. lower the r into the sea. When retrieving a boat r on the sea to land, the trolley 9 must be
Lower the trolley e on which is placed below the water surface,
After the boat r is picked up on the trolley Q, the trolley e is pulled up and the boat r is retrieved via the trolley 9. Figure 5 shows a platform-type watercraft lifting and lowering device j, in which four columns k are vertically erected from above the water surface to below the water surface, and the columns k
Of these, two of each are connected via a horizontally extending girder L, and two winches N each housed on the girder 1 so as to be able to pay out and wind up a wire rope are disposed.
A platform 0 is horizontally connected to the payout side end of the wire rope hanging from the winch n. A trolley 9 shown in FIG. 4 can be placed on the platform 0, and by driving a winch n, the wire robe is let out or wound up, and the platform 0 is raised and lowered. . When lowering a boat r on land onto the sea, the boat r is mounted on a trolley 9 in advance, and the boat r is moved to the platform via the trolley 9. After being placed on the ship, platform 0 is lowered and boat r is lowered onto the sea. When retrieving boat r from the sea to land, platform 0, on which a trolley is placed, is lowered below the water surface in advance, and after receiving boat r onto trolley 9, platform 0 is raised. and bring boat r back to land. Figures 6 and 7 show a rotating boat lifting device p, in which a rotating frame '
The rotating frame r
An elevating member S extending perpendicularly to the elevating member S is slidably fitted therein, and a table t on which a cart 9 shown in FIG. 4 can be placed is formed at the lower end of the elevating member S. At the upper end of the fixed post q, a winch V that houses a wire rope U so as to be able to feed out and wind it up is connected to the revolving frame r.
The wire rope U is arranged so as to rotate at the same time, and the payout side end of the wire rope U is locked to the table t, and by operating the winch V, the wire rope U is paid out or wound up to lift the table t. I'm trying to let it fall. When lowering a boat r from land onto the sea, the boat r is mounted on a cart 9 in advance, and after placing the boat r on a table t via a cart 9, the table t is placed on the ground of a quay b. The table t is pulled up from the surface, rotated above the water surface, and lowered to below the water surface to lower the boat r onto the sea. When retrieving a boat r on the sea to land, the trolley 9 must be
The table t on which the boat R is placed is lowered below the water surface, and after receiving the boat r onto the trolley 9, the table t is pulled up higher than the ground surface of the quay b, and the table t is turned to the quay b side. The boat r is moved and lowered to the ground surface of the quay b, and the boat r is recovered on land via the trolley 9. FIG. 8 is a graph showing the work cycle of the swivel watercraft lifting device p, and shows the operation of the device when a table t on land is positioned below the water surface, and then the table t is returned to land again, and the operation of the device for each operation. The required time is shown along the horizontal axis of the graph, and the operating state of the device is shown along the vertical axis of the graph. In the figure, the bollard is the time required to secure the trolley 9 to the table T, and the time required for boarding and starting the engine is the time required for the user to board the boat and leave the marina after lowering the boat R to the sea. The entry positioning represents the time required to pick up the boat r on the trolley located in the water. As shown in Fig. 8, in the swing type boat hoisting and unloading system 1fp, it takes 521 seconds to lower a boat f on land to the sea, and 556 seconds to hoist a boat r at sea to land.
Seconds are the work cycle. Therefore, if the swivel boat lifting device p is used only for the lower rack,
What is that ability? 600 N- -■X 3 -19.4 (vessel)/3 hours 556.

【発明が解決しようとする課題] しかし、第4図及び第5図に示す舟艇揚降装置a.jで
は傾斜ガーダC1支柱k等の基礎部分を水中に構築しな
ければならず、工事が難しくなり、工費が高くなるとと
もに、傾斜ガーダC,支柱k等の水中に沈んでいる部分
の日常的な保守点検はほとんど行うことができないので
、水中に沈んでいる部分の腐蝕等による劣化が早く、舟
艇揚降装置a.jの耐用年数が短い。 更に、傾斜ガーダc1支柱k等の構築物が水中および水
面上に位置するために舟艇揚降装置a,jの付近を航行
する舟艇rの障害になる,また、第6図及び第7図に示
す舟艇揚降装置pでは、舟艇揚降装置a.Jと同様に台
車クを用いて舟艇rをテーブルt上に載置したり、テー
ブルt上より引き出すという手順を行うにもかかわらず
、テーブルtを岸壁bの地表面より高く引き揚げたり、
旋回させたりしなければならないので舟艇rの揚降作業
に要する作業時間が長くなり、効率の良い揚降作業は望
めない。 本発明は上述の各種問題点を解決するもので、舟艇揚降
装置の耐用年数の向上と、揚降作業に要する作業時間を
短縮することを目的としている。 [課題を解決するための手段] 本発明は岸壁に設置した固定ポストに水平面内に回動可
能な旋回フレームを設け、該旋回フレームに横方向に延
びる複数のブームを固着し、各ブームに設けた支持部材
にそれぞれ昇降フレームを昇降可能に装着し、前記昇降
フレームに舟艇を搭載した台車を載置可能なテーブルを
それぞれ設けたものである。 [作   用] 舟艇を陸上より海上に降ろす際には、予め艇を搭載した
台車をテーブル上に載置した後、テーブルを所定の高さ
まで上昇させ、次いで旋回フレームを回動させてテーブ
ルを水面上に位置させ、テーブルを下降させて舟艇を海
上に降ろす。 舟艇を海上より陸上に収揚する際には、予め台車を載置
したテーブルを水面下に下降させておき、台車上に舟艇
を迎え入れた後、テーブルを所定の高さまで上昇させ、
次いで旋回フレームを回動させてテーブルを岸壁上に位
置させ、テーブルを下降させて舟艇を台車とともに陸上
に収揚する。 【実 施 例】 以下、本発明の実施例を図面を参照しつつ説明する。 第1図及び第2図は本発明の一実施例であり、岸壁−1
に設置した垂直に延びる固定ボスト2の上部に、該固定
ポスト2に対して水平面内を移動自在な旋回環3を設け
、該旋回環3上に旋回フレーム4を固着し、固定ポスト
2の上部に設けた旋回駆動装置5の旋回軸(図示せず)
を旋回フレーム4に固着するとともに、前記旋回フレー
ム4に水平に延びる2本のプーム6a.8b (D後端
部を連結する。 ブームlla,6bの先端部に垂直方向に延びる一対の
支持部材7.7を固着し、該支持部材7.7の上下端部
に、一組のガイド部材8a.8bを同一垂直軸上に位置
するように設ける。 ガイド部材8a.8bは、第2図に示す如く平面形状が
凹字形状で、各ガイド部材8a.8bが設けられている
ブーム6a.8bが旋回フレーム4により所定の位置ま
で回動した際に水面9上にオーバーハングするようにな
っている。 ガイド部材8a.8bに、直立した枠状体よりなる昇降
フレームlOの左右の垂直部材11.llを昇降自在に
嵌合する。 ガイド部材8a.8b内には水平軸を中心に回転可能に
支持されたローラ12が垂直部材11を挟むように配設
されている。 各垂直部材ifの下端部に、それぞれ水平に延びるテー
ブル支持部材l3の基部を固着し、両テーブル支持部材
18.13の上面にテーブル14.14を掛け渡して固
着する。 テーブル14.14は台車l5の走行輪IEi.1Bの
間隔に合わせて設置されており、台車l5は舟艇17を
搭載できるようになっている。 各ブーム8a.6bの先端部上面に、2箇のドラム18
a. 18bを有する巻上げウインチl9をそれぞれ設
け、ワイヤロープ20の一端を一方のドラム18aに、
他端を他方のドラム18bに係止するとともに、ワイヤ
ロープ20の中間部を各ブーム8a,6bに設けたシー
ブ21及び昇降フレーム10の下部に設けたシーブ22
に掛けまわす。 水平に延びる中間部材23を前記昇降フレーム1Gをな
す垂直部材11.11の中間部に固着し、垂直に延びる
フェンダー24.24の上端を前記中間部材23に固着
し、下端を昇降フレームlOの下部に固着する。 なお、図中、25は舟艇l7へ乗降するための浮き桟橋
、2Bは岸壁lと浮き桟橋25との間を行き来するため
の階段、27a,27bは旋回フレーム4によりプーム
6a,6bを所定の位置まで回動させてそのブーム6a
,6bに設けたテーブル14.14を下降させた際に、
テーブル14.14の上面が岸壁lの上面と同一レベル
になるように掘り下げたビットを表わしている。 以下、本発明の装置の作動について説明する。 ブーム8aに設けたテーブル14.14により陸上にあ
る舟艇l7を海上に降ろす場合には、テーブル14.1
4がビット27aの直上に位置するように旋回駆動装置
5により旋回フレーム4を回動させた後、巻上げウイン
チl9を駆動して昇降フレーム10を下降させ、テーブ
ル14.14の上面が岸壁lの上面と同一レベルになる
ようにする。 このとき、ブーム6bに設けたテーブル14.14は、
所定の高さまで上昇した状態になっていて、第2図に実
線で示すように浮き桟橋25右側の水面9上に位置して
いる。 次いで、予め舟艇l7を搭載しておいた台車l5をブー
ム6aに設けたテーブル14.14上に導き、巻上げウ
インチ19を運転してテーブル14. 14が所定の高
さに位置するように昇降フレームlOを上昇させ、旋回
駆動装置5を運転して台車l5を載置したテーブル14
.14が浮き桟橋25左側の水面9上に位置するまで旋
回フレーム4を回動させる。 ブーム6aに設けたテーブル14.14が第2図に二点
鎖線で示す如く、浮き桟橋25左側の水面9上まで回動
したならば、巻上げウインチl9を運転して昇降フレー
ムlOを下降させ、舟艇l7に浮力が作用するまでテー
ブル14.14を水面9下に下降させる。 このときブーム8bに設けたテーブル14. 14は第
2図に二点鎖線で示す如くピット27bの直上に位置し
ており、この状態においてテーブル14.14を上面が
岸壁lの上面と同一レベルになるように下降させれば、
ブーム8aに設けたテーブル14.14にて舟艇l7を
海上に降ろす作業を行っている間に、次なる舟艇l7を
海上に降ろす準備を平行して行うことが可能となる。 ブーム8aに設けたテーブル14.14により海上にあ
る舟艇l7を陸上に収揚する際には、予め台車l5をテ
ーブル14.14上に載置しておき、前述した舟艇l7
を海上に降ろすときの手順と同様にテーブル14.14
を第2図に二点鎖線で示す如く浮き桟橋25左側の水面
9下に下降させておく。 水面の下に位置する台車l5の直上に、舟艇l7を迎え
入れたならば、巻上げウインチl9を運転してテーブル
i4.l4が所定の高さに位置するように昇降フレーム
lOを上昇させ、旋回駆動装置5を運転してテーブル1
4.14をピット27aの直上に位置させる。 このとき、プーム6bに設けたテーブル14.14は、
所定の高さまで上昇した状態になっていて、第2図に実
線で示す如く、浮き桟橋25右側の水面9上に位置して
いる。 ブーム6aに設けたテーブル14.14がピット27a
の直上まで回動したならば、巻上げウインチl9を運転
して昇降フレームIOを下降させてテーブル14.14
の上面が岸壁lの上面と同一レベルになるようにし、台
車t5を岸壁l上に引き出して、舟艇l7を陸上に収揚
する。 このとき、プームebに設けたテーブル14.14は第
2図に実線で示す如く、桟橋25右側の水面9上に位置
しており、この状態において台車l5を載置したテーブ
ル14.14を水面9下に下降させれば、ブーム6aに
設けたテーブル14.14より舟艇l7を搭載した台車
l5を引き出している間に、次なる舟艇l7を陸上に収
揚する作業を平行して行うことが可能となる。 装置を使用しないときには、巻上げウインチl9により
、テーブル14.14が所定の高さに位置するように各
昇降フレームlOを上昇させ、更に旋回駆動装置5を運
転してプーム8a.6bが岸壁lより突出しないように
する。 従って、本発明の装置では、常時水面9下に位置してい
る部分がないので、装置の設置に要する工事費が安く、
日常的な点検保守が容易に行え、水中部分の腐蝕等によ
る劣化がないので装置の耐用年数が長くなり、また装置
休止時に付近を航行する舟艇の障害となることがむい。 第3図は前述した第8図と同様に本発明の装置の作業サ
イクルを表わすグラフであり、ブーム6a.8bに設け
たテーブル14.14の双方を用いて作業を行った場合
における装置の作動もしくは作業毎の所要時間をグラフ
横軸方向に示している。 グラフ上方は舟艇l7を下架するブーム8aの作動、ま
た下方は舟艇l7を上架するブームebの作動を表わし
、下架時には377秒、上架時には447秒が作業サイ
クルになっている。 よって本発明の装置においては、プーム6a.8bの双
方のテーブル14. 14を下架のみに使用したとする
と、その能力は また、上架のみに使用したとすると、その能力は となり第6図及び第7図に示す従来の旋回式舟艇揚降装
置pの2倍以上の能力を有している。 また、当然のことながら、ブーム6a.8bのうち、一
方を上架に、他方を下架に使用することも可能である。 なお、本発明の舟艇揚降装置は、上述の実施例にのみ限
定されるものではなく、ブームの数を適宜増やし、テー
ブルの数を増やすようにしてもよく、また本発明の要旨
を逸脱しない範囲内において種々変更を加え得ることは
勿論である。 [発明の効果] 以上説明したように、本発明の舟艇揚降装置によれば、
下記の如き種々の優れた効果を奏し得る。 1)複数のブームにそれぞれ昇降可能なテーブルを設け
ているので、一隻の舟艇を海へ降ろす作業、もしくは、
陸上へ収揚する作業を行っている間に他の舟艇を海へ降
ろす準備作業、もしくは陸上へ収揚する作業を平行して
行うことができ、従って従来装置に比べて作業能率が飛
躍的に向上し、舟艇の揚降に必要とする一同あたりの費
用を軽減することができる。 2)固定ポスト、旋回フレーム等の共用部分に、それぞ
れ昇降可能なテーブルを有するブームを複数固着してい
るので、従来装置を複数基設けるよりも低価格に設置す
ることができる。 3)突堤等を構築する必要がないので、岸壁の基礎工事
等を低優格にすることができる。 4)装置に常時水面下に位置する部分がないので、装置
の設置に要する取付費が極めて安く、また、日常的な点
検保守作業を容易に行うことができるので、装置の耐用
年数が長くなるとともに、装置の付近を航行する舟艇の
障害となることがない。
Problems to be Solved by the Invention] However, the watercraft lifting and lowering device a. shown in FIGS. 4 and 5. In J, the foundation parts such as inclined girder C1 and support column k have to be constructed underwater, which makes the construction difficult and expensive. Since maintenance and inspection are almost impossible, parts submerged in water deteriorate quickly due to corrosion, etc., and the boat's lifting and lowering equipment a. The useful life of j is short. Furthermore, structures such as the inclined girder c1 and the strut k are located in the water and above the water surface, and thus become an obstacle for the boat r sailing near the boat lifting and lowering devices a and j, as shown in FIGS. 6 and 7. In the boat lifting and lowering device p, the boat lifting and lowering device a. Despite carrying out the procedure of placing boat r on table t using a trolley and pulling it out from table t in the same way as J, the table t was pulled up higher than the ground surface of quay b,
Since the boat r must be turned, the time required for lifting and lowering the boat r becomes longer, and efficient lifting and lowering cannot be expected. The present invention solves the various problems mentioned above, and aims to improve the service life of a watercraft lifting device and shorten the working time required for lifting and lowering operations. [Means for Solving the Problems] The present invention provides a rotating frame that is rotatable in a horizontal plane on a fixed post installed on a quay, a plurality of booms extending laterally are fixed to the rotating frame, and An elevating frame is attached to each support member so as to be movable up and down, and each of the elevating frames is provided with a table on which a cart on which a watercraft is mounted can be placed. [Operation] When lowering a boat from land to sea, the cart carrying the boat is placed on the table in advance, the table is raised to a predetermined height, and then the revolving frame is rotated to lower the table to the water surface. The table is lowered and the boat is lowered into the sea. When retrieving a boat from the sea to land, a table on which a trolley is placed is lowered below the water surface in advance, and after the boat is placed on the trolley, the table is raised to a predetermined height.
Next, the revolving frame is rotated to position the table on the quay, and the table is lowered to retract the boat and the cart onto land. [Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 and Fig. 2 show one embodiment of the present invention, and the quay-1
A rotating ring 3 that is movable in a horizontal plane with respect to the fixed post 2 is provided on the upper part of a vertically extending fixed post 2 installed in the upper part of the fixed post 2. A rotating frame 4 is fixed on the rotating ring 3, and the upper part of the fixed post 2 is A rotation axis (not shown) of the rotation drive device 5 provided in
are fixed to the revolving frame 4, and two pools 6a. 8b (Connecting the rear end of D. A pair of support members 7.7 extending vertically are fixed to the tip of the boom lla, 6b, and a set of guide members is attached to the upper and lower ends of the support members 7.7. The guide members 8a, 8b are provided so as to be located on the same vertical axis.The guide members 8a, 8b have a concave planar shape as shown in FIG. 8b is adapted to overhang above the water surface 9 when rotated to a predetermined position by the revolving frame 4. On the guide members 8a and 8b, left and right vertical members of the elevating frame lO, which is an upright frame-like body, are attached. 11.ll is fitted in such a way that it can be raised and lowered. Rollers 12 that are rotatably supported around a horizontal axis are disposed within the guide members 8a and 8b so as to sandwich the vertical member 11. Each vertical member if The bases of horizontally extending table support members 13 are fixed to the lower ends of both table support members 18.13, and a table 14.14 is fixed by spanning over the upper surfaces of both table support members 18.13. They are installed in accordance with the spacing between IEi.1B, and the bogie 15 can be loaded with a boat 17. Two drums 18 are installed on the upper surface of the tip of each boom 8a, 6b.
a. A hoisting winch 19 having a winding winch 18b is provided, and one end of the wire rope 20 is connected to one drum 18a.
A sheave 21 whose other end is locked to the other drum 18b and whose intermediate portion of the wire rope 20 is provided on each boom 8a, 6b, and a sheave 22 provided at the lower part of the lifting frame 10
Spread it around. A horizontally extending intermediate member 23 is fixed to the middle part of the vertical member 11.11 forming the lifting frame 1G, the upper end of the vertically extending fender 24.24 is fixed to the intermediate member 23, and the lower end is fixed to the lower part of the lifting frame IO. sticks to. In the figure, 25 is a floating pier for boarding and disembarking from the boat 17, 2B is a staircase for going back and forth between the quay 1 and the floating pier 25, and 27a and 27b are used to move the pools 6a and 6b to predetermined positions using the revolving frame 4. boom 6a.
, 6b, when lowering the table 14.14,
Table 14 represents a bit dug so that the top surface of 14 is at the same level as the top surface of quay l. The operation of the apparatus of the present invention will be explained below. When lowering the watercraft l7 on land onto the sea using the table 14.14 provided on the boom 8a, the table 14.1
After rotating the rotating frame 4 by the rotating drive device 5 so that the bit 4 is located directly above the bit 27a, the hoisting winch l9 is driven to lower the lifting frame 10 so that the upper surface of the table 14.14 is positioned directly above the quay l. Make sure it is on the same level as the top. At this time, the table 14.14 provided on the boom 6b is
It has been raised to a predetermined height and is located above the water surface 9 on the right side of the floating pier 25, as shown by the solid line in FIG. Next, the trolley l5 on which the boat l7 has been previously mounted is guided onto the table 14.14 provided on the boom 6a, and the hoisting winch 19 is operated to lift the cart l5 onto the table 14.14. 14 is located at a predetermined height, and the table 14 on which the cart 15 is placed is raised by operating the swing drive device 5.
.. The rotating frame 4 is rotated until the rotating frame 14 is positioned above the water surface 9 on the left side of the floating pier 25. When the table 14.14 provided on the boom 6a has rotated to above the water surface 9 on the left side of the floating pier 25, as shown by the two-dot chain line in FIG. 2, the lifting winch 19 is operated to lower the elevating frame 10, The table 14.14 is lowered below the water surface 9 until a buoyant force acts on the boat l7. At this time, the table 14 provided on the boom 8b. 14 is located directly above the pit 27b as shown by the two-dot chain line in FIG.
While the table 14.14 provided on the boom 8a is being used to lower the boat 17 onto the sea, preparations for lowering the next boat 17 onto the sea can be made in parallel. When the boat l7 on the sea is brought back to land using the table 14.14 provided on the boom 8a, the cart l5 is placed on the table 14.14 in advance, and the boat l7 mentioned above is placed on the table 14.14.
Table 14.14.
is lowered below the water surface 9 on the left side of the floating pier 25, as shown by the two-dot chain line in FIG. Once the boat l7 is placed directly above the trolley l5 located below the water surface, the hoisting winch l9 is operated to move the table i4. The lifting frame lO is raised so that the table l4 is located at a predetermined height, and the swing drive device 5 is operated to raise the table 1.
4.14 is located directly above the pit 27a. At this time, the table 14.14 provided in the pool 6b is
It has been raised to a predetermined height and is located above the water surface 9 on the right side of the floating pier 25, as shown by the solid line in FIG. The table 14.14 installed on the boom 6a is the pit 27a.
When it has rotated to just above the table 14.14, operate the hoisting winch l9 to lower the lifting frame IO.
The upper surface is made to be on the same level as the upper surface of the quay l, the trolley t5 is pulled out onto the quay l, and the boat l7 is stowed on land. At this time, the table 14.14 provided in the pool eb is located above the water surface 9 on the right side of the pier 25, as shown by the solid line in FIG. 9, then while the trolley l5 carrying the boat l7 is being pulled out from the table 14.14 provided on the boom 6a, the work of stowing the next boat l7 on land can be carried out in parallel. It becomes possible. When the apparatus is not in use, each lifting frame 1O is raised by the hoisting winch 19 so that the table 14.14 is located at a predetermined height, and the swing drive device 5 is operated to move the poom 8a. 6b should not protrude beyond the quay l. Therefore, in the device of the present invention, since there is no part that is always located below the water surface 9, the construction cost required for installing the device is low.
Daily inspection and maintenance can be easily performed, and the equipment has a long service life because there is no deterioration due to corrosion of the underwater parts, and it is less likely to cause trouble to boats sailing nearby when the equipment is out of service. FIG. 3 is a graph showing the working cycle of the apparatus of the present invention, similar to FIG. 8 described above, in which the boom 6a. The horizontal axis of the graph shows the operation of the device or the time required for each operation when the operations are performed using both tables 14 and 14 provided in the table 8b. The upper part of the graph represents the operation of the boom 8a that lowers the boat 17, and the lower part represents the operation of the boom eb that lowers the boat 17.The working cycle is 377 seconds when the boat is lowered and 447 seconds when it is lifted. Therefore, in the device of the present invention, the pool 6a. Both tables 14.8b. 14 is used only for the lower rack, and if used only for the upper rack, its capacity is more than twice that of the conventional swivel boat lifting device p shown in Figures 6 and 7. has the ability to Also, as a matter of course, the boom 6a. It is also possible to use one of the racks 8b as an upper rack and the other as a lower rack. Note that the boat lifting and lowering device of the present invention is not limited to the above-described embodiments, and the number of booms may be increased as appropriate and the number of tables may be increased without departing from the gist of the present invention. Of course, various changes can be made within the scope. [Effects of the Invention] As explained above, according to the watercraft lifting and lowering device of the present invention,
Various excellent effects can be achieved as described below. 1) Since multiple booms are each equipped with a table that can be raised and lowered, it is possible to lower a single boat into the sea, or
While the work of stowing on land is being carried out, preparation work for lowering other boats to sea or work of stowing on land can be done in parallel, and therefore work efficiency is dramatically improved compared to conventional equipment. It is possible to reduce the cost per person required for lifting and lowering boats. 2) Since a plurality of booms each having a table that can be raised and lowered are fixed to a common part such as a fixed post and a revolving frame, it can be installed at a lower cost than installing multiple conventional devices. 3) Since there is no need to construct a jetty, etc., foundation work for the quay can be done at a lower grade. 4) Since there are no parts of the equipment that are permanently located under water, the installation costs required for installing the equipment are extremely low, and routine inspection and maintenance work can be easily performed, extending the service life of the equipment. At the same time, it does not cause any obstruction to boats sailing near the device.

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

第1図は本発明の一実施例の側面図、第2図は本発明の
一実施例の平面図、第3図は第1図及び第2図に示す装
置の作業サイクルのグラフ、第4図は従来のトロリ式舟
艇揚降装置の側面図、第5図は従来のプラットホーム式
舟艇揚降装置の側面図、第6図は従来の旋回式舟艇揚降
装置の側面図、第7図は第6図に示す装置の平面図、第
8図は第6図及び第7図に示す装置の作業サイクルのグ
ラフである。 図中、lは岸壁、2は固定ポスト、4は旋回フレーム、
6aJbはブーム、7は支持部材、10は昇降フレーム
、14はテーブル、15は台車、17は舟艇を示す。
FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a plan view of an embodiment of the present invention, FIG. 3 is a graph of the work cycle of the apparatus shown in FIGS. 1 and 2, and FIG. Figure 5 is a side view of a conventional trolley type boat lifting device, Figure 5 is a side view of a conventional platform type boat lifting device, Figure 6 is a side view of a conventional swivel type boat lifting device, and Figure 7 is a side view of a conventional platform type boat lifting device. FIG. 6 is a plan view of the apparatus shown in FIG. 6, and FIG. 8 is a graph of the working cycle of the apparatus shown in FIGS. 6 and 7. In the figure, l is a quay, 2 is a fixed post, 4 is a rotating frame,
6aJb is a boom, 7 is a support member, 10 is an elevating frame, 14 is a table, 15 is a trolley, and 17 is a boat.

Claims (1)

【特許請求の範囲】[Claims] 1)岸壁に設置した固定ポストに水平面内に回動可能な
旋回フレームを設け、該旋回フレームに横方向に延びる
複数のブームを固着し、各ブームに設けた支持部材にそ
れぞれ昇降フレームを昇降可能に装着し、前記昇降フレ
ームに舟艇を搭載した台車を載置可能なテーブルをそれ
ぞれ設けたことを特徴とする舟艇揚降装置。
1) A rotating frame that can be rotated in a horizontal plane is installed on a fixed post installed on the quay, multiple booms that extend in the horizontal direction are fixed to the rotating frame, and each lifting frame can be raised and lowered by a support member provided on each boom. 1. A watercraft lifting and lowering device, characterized in that the elevating frame is equipped with a table on which a cart on which a watercraft is mounted can be placed.
JP1160249A 1989-06-22 1989-06-22 Boat lifting device Expired - Lifetime JPH0733234B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1160249A JPH0733234B2 (en) 1989-06-22 1989-06-22 Boat lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1160249A JPH0733234B2 (en) 1989-06-22 1989-06-22 Boat lifting device

Publications (2)

Publication Number Publication Date
JPH0326699A true JPH0326699A (en) 1991-02-05
JPH0733234B2 JPH0733234B2 (en) 1995-04-12

Family

ID=15710925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1160249A Expired - Lifetime JPH0733234B2 (en) 1989-06-22 1989-06-22 Boat lifting device

Country Status (1)

Country Link
JP (1) JPH0733234B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4821373U (en) * 1971-07-19 1973-03-10
JPS5772362U (en) * 1980-10-21 1982-05-04
JPS59192934U (en) * 1983-06-09 1984-12-21 楢崎造船株式会社 Lifting device for ships
JPH01164295U (en) * 1988-05-10 1989-11-16

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4821373U (en) * 1971-07-19 1973-03-10
JPS5772362U (en) * 1980-10-21 1982-05-04
JPS59192934U (en) * 1983-06-09 1984-12-21 楢崎造船株式会社 Lifting device for ships
JPH01164295U (en) * 1988-05-10 1989-11-16

Also Published As

Publication number Publication date
JPH0733234B2 (en) 1995-04-12

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