JPS5859194A - Hydraulic device for boom turning winch - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明はブームを１本の油圧操作ハンドルで、熟練を
要さず、容易に旋回させ得る油圧装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic system that allows a boom to be easily rotated using a single hydraulic operation handle without requiring any skill.

従来、−例として、サンマ漁船約５５０隻のほとんど全
部が人力によりブーム旋回を行って来た。はんの少数の
船が２本の油圧操作ハンドルを使用し、細心の注意と熟
練を必要としてもワイヤーのテンションを保持する事嬬
不可能の状況であった。Conventionally, for example, almost all of the approximately 550 saury fishing boats have been rotated by human power. A small number of ships used two hydraulically operated handles, making it impossible to maintain tension on the wires, even with great care and skill.

この発明はブームの旋回操作を、例へばサンマ漁船の洋
上での極端な横揺れ状態でも、又港での荷揚時も、最低
２人、極端な場合４〜５人を必要とし、然も危険な作業
であったものを、１人で、安全に、容易に操作し得る油
圧装置を目的とする。This invention requires at least two people, and in extreme cases four to five people, to operate the boom, even when a saury fishing boat is in extreme rolling motion at sea, or when unloading cargo at a port. The objective is to create a hydraulic system that can be operated safely and easily by one person.

この発明を図面にもとづいて説明すると、第１図におい
て、ブーム１を左に旋回させる為に、油圧操作ハンドル
７を動かし作動油をチェックパルプ８を通−油圧モータ
ー５０Ａに送ると、巻取りリール４はワイヤー２を巻取
りブームは左へ旋回する。To explain this invention based on the drawings, in FIG. 1, in order to turn the boom 1 to the left, the hydraulic operating handle 7 is moved and hydraulic oil is sent through the check pulp 8 to the hydraulic motor 50A, and the take-up reel is 4 winds up the wire 2 and the boom turns to the left.

反対側のワイヤーはブームに引張られてり−ルＢを回転
させる。The wire on the opposite side is pulled by the boom, causing the wheel B to rotate.

オイルモーターＢはリールＢにより回転させられポンプ
としての作用をし、ｄポートから作動油を吸入しｄポー
トから吐出する。ｄボートを出た作動油はチェックバル
ブ８で止められ、特殊油圧ＩＪ　１３−フ弁すで圧力を
生じてからタンクＴへ戻る。この圧力がワイヤーにテン
シヨンを与える。滑車３の左右がブーム位置と等距離で
ない為、ＡモーターとＢモーターの回転数は異なるが、
ｂポートとｄポートを結びその中間からタンクＴと結ん
である回路の為に、ｂ→ｄボートへ流れる作動油は余剰
の時はタンクＴへ流れ、不足の時はタン１１．りＴから
吸入し、Ｂモーターは吸入不足を起さず正常にポンプと
しての作用をする。Oil motor B is rotated by reel B and acts as a pump, sucking in hydraulic oil from port d and discharging it from port d. The hydraulic oil leaving the d-boat is stopped by a check valve 8, generates pressure in a special hydraulic IJ 13 valve, and then returns to the tank T. This pressure gives tension to the wire. Since the left and right sides of pulley 3 are not equidistant from the boom position, the rotation speeds of motor A and motor B are different.
Because the circuit connects ports b and d and connects the tank T from the middle, hydraulic oil flowing from boat b to d flows to tank T when there is surplus, and when there is shortage, it flows to tank 11. The B motor functions normally as a pump without causing insufficient suction.

右旋回時はこの説明の逆の順序で動く。When turning to the right, move in the reverse order of this explanation.

ブームの先端からワイヤーで重量物を吊り下げた時、船
が横揺れし、ブームが左右に振られる状態が起きる。When a heavy object is suspended from the end of a boom with a wire, the ship rolls and the boom swings from side to side.

左へ旋回中横揺れによりブームが左へ振られると、Ａモ
ーターは引張る為の力は少くセすみ圧力が下る。反対に
右へ振られるとＡモーターの引張る力は大でなければな
らず圧力は上昇する。When the boom is swung to the left due to lateral shaking while turning to the left, the A motor's pulling force becomes smaller and the pressure decreases. On the other hand, if it is swung to the right, the pulling force of the A motor will be large and the pressure will rise.

第２図特殊リリーフ弁は次の様な作用をする。The special relief valve shown in Figure 2 operates as follows.

シート１１に針弁１２があり、針弁はスプリング１３、
調整ネジ１４によゆシートに圧着されている。シートに
はＢポートと入口１５とＡポートの入口１６があり、そ
の有効面積は等しくなっている。There is a needle valve 12 on the seat 11, and the needle valve has a spring 13,
The adjustment screw 14 is crimped onto the seat. The seat has a B port and an inlet 15, and an A port inlet 16, and their effective areas are equal.

Ａポートの圧力が０の場合、Ｂポート圧力は−スプリン
グにより設定された圧力迄上昇する。When the A port pressure is 0, the B port pressure increases to the pressure set by the spring.

Ａポートの圧力が上昇しスプリングにより設定された圧
力になると、Ｂボート圧力は０になる。When the pressure at port A rises to the pressure set by the spring, the pressure at port B becomes zero.

籠の横揺れが太き（引張り力が多く必要の時、反対側ワ
イヤーのブレーキ力は少く、引張り力が小となる時は、
ブレーキ力は大となる。When the cage has a large horizontal oscillation (when a large amount of tensile force is required, the braking force of the opposite wire is small; when the tensile force is small,
The braking force will be large.

この発明は以上説明したように、従来人力で操作された
ブームにこの油圧装置を設置する事により、多（の熟練
した人員を必要とし、過重な、危険な労働であった作業
が、１人の人間で安全に、迅速に操作出来る効果がある
。As explained above, this invention installs this hydraulic system on a boom that was conventionally operated by hand, so that work that previously required many (skilled), overworked, and dangerous labor can now be done by one person. It has the effect of being able to be operated safely and quickly by a number of people.

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

第１図は、プーム旋回ウィンチ用油圧装置の油圧回路図
、第２図は特殊＋３　リーフ弁の縦断面図である。 し 特許出願人　　内１）勝已 、手続補上書 昭和　　年　　月　　日 特許庁長官殿　　　　　　　５７・７・２１１、事件の
表示 昭和５６年特許願第１５７４４’４号 ２、発明の名称 プーム旋回ウィンチ用油圧装置 ３、補正をする者 事件との関係　　　特許出願人　　− 内　　１）　勝　　已 ４、代　理　人 ７、補正の内容　別紙明細書及び図−１２！ｌｓ−リ、
′、　　・明、　　細　　　書 Ｌ　発−の渚称 ブーム旋回ウィンチ用油圧装置 ′Ｌ　特許請求の範囲 ′５ｌＩｔ−回動自ＩＥＫ軸着し九ブームを左右のワイ
ヤを章、引して旋回す為ようにした％ｔ）Ｋ於て、番左
右のＶイヤを油圧！−ＩＫｍ！絖したドラムＫｍｌｌ　
Ｌ、両油ＦＥ−＝ｈ−１０ｔＡＥ駆動回路を切換、弁を
介して油圧源とタンクとに選択〜的Ｋｍ絖され且つ一方
が油圧源と他方がタン／Ｋｉｌ続される選択回路、と、
恒常的に一ン／Ｋｌｌ！！！され為メン／回路とで構成
し、各油圧駆動回路の各選択回路Ｋｔ＃１ＦＥｑニー−
からタンクへＯ流れを阻止すゐ逆止弁を介在させゐと共
に腋逆止弁と並列に諌油圧峰−Ｉかもメンタへ連らなゐ
Ａイパスを設け、該パイノ臂スに他、方の油圧駆動回路
の選択回・路の流体圧力の上昇に応じて該パイＡス、の
流体圧力、を降下させゐべ（制御する特殊リリーフ弁ｔ
−設けたことを特徴とすゐブームｔＩ１回つィンチ用油
圧装置。 ！　発明の詳細な説明 本発明は主として漁船等の船舶に設備されるに適し九ブ
ーム旋回ウィンチ用油圧装置に関する。 従来この種クィンテのシームはその機部が回動自在に軸
着され、該ブームに係着し九左右のワイヤを牽引するこ
とＫよｐ旋ｌＩＩさせゐを一般とする。 而して各左右のワイヤは通常滑車を介して牽引されるの
で該シーム０＠部が左右の滑車間の中央の軸線上に位置
しない限り左右のワイヤの牽引長さと繰出し長さが最小
とならず、例えば漁船のように作業Ｏｇｌ利Ｏために一
方の船側に片寄ってブームの機部を堆付けされることが
多い場合、各ワイヤを＃数の作業者の人手で操作するか
、或は各別のノ々ルブによ１作動制御され九油圧峰−声
駆動の２台Ｏドラムで操作する會要し、作業性が悪く船
の揺動に伴なう釣上げ負荷の揺動で旋回中のブームが遊
動する鬼険會肪止出来ない欠点があった。 本発明はかかる欠点を防止することｔｌ的としたもので
、根部を回動自在に軸着したウィンチのブームを左右の
ワイヤを牽引して旋回すゐよ゛うにしたものに於て、各
左右のワイヤを油圧モー＃に＠絖したドラムに捲■し、
両油圧モータの油圧駆動回路を切換弁を介して油圧源と
タンクとに選択的に接続され且つ一方が油圧源と他方が
タンクに接続される選択回路と、恒常的にタンクに接続
されるタンク回路とで構成し、各油圧駆動ｒｍＩ１１の
各選択回路に油圧峰−タからタンクへの流れを阻止す為
逆止弁を介在させると共に該逆止弁と並列に誼油圧モー
タからタンクへ連らなるパイノ々スを設け、該パイ・９
スに他方の油圧駆動回路の選択回路の流体圧力の上昇に
応じて該パイノスの流体圧力を降下させるべ（制御する
特殊リリーフ弁を設けたことを特徴とする。 本発明の実施例をｒＩＡ面につ龜説明する。 第１図に於て（１）は機部（２）を漁船の甲板等に回動
自在に軸着したブームを示し、該ブーム（１）Ｆｉ骸根
部（２）を支点として紙菖喬直上方ＫＥ示してない適繊
な複数本のワイヤにょ１俯抑電れるｔ共に腋ブームに沿
って走行するワイヤによ１魚類等の負荷を釣上げする＠
（３）（４）は皺ブーム（１）に係着されて左右にのび
為ワイヤ、（５３（６Ｊは各ワイヤ（３１（４）　４Ｄ
中関をｍｕす、１１滑車で、諌デーＡ（１）０１１部（
２）は両滑車（５）（８）閏の中央の軸線上に′＆（左
方の滑車（５）書ｊＫ傭位して験けｂれる％Ｏ＆す為。 画してかか為ブーム（１）七滑車（５）（６）　０位量
閤係に於て状該シーム（１３０ｍ回に際してのワイヤ０
牽引長さと繰ＪＩ出し長ｉｌｉ＃、が等しくならない、
（７）（和は各ワイヤ（３１（４會奉引すぺ（或紘繰ｐ
出すべく亙に逆方肉に油圧毫−タ（９）−１：鈎に回転
するドラ＾、Ｕａ２拡油圧源（至）からタンク−へと同
容量の油ｊＥ４−声（９）ａｌｌを介して備璋する油圧
駆動゛回路で、４に油圧駆動Ｗ踏αＤ■祉各油圧鳴−タ
（９）（ＬｌｌＩを＠換弁ａＩＪを介して油圧源−と−
ンクＩとに選択的に接続すゐ選択ｍｍ＠ａと、恒常的に
４油圧モーメ（９Ｈ１ｌ／Ｆ／輪に摘絖する一ｙター踏
軸とで構成し、ｍ拳の例では番躯動■踏ａ１）ｕの一シ
Ｉ°回踏ｒＡ４ｔ−共通させて１本の％ので構威すゐよ
５Ｋした。Ｕ−は油ＭＥ幡−メ（９）鱒と切換弁鱒七Ｏ
Ｎ０遍ｍａ踏参珍に介在させ大油圧令−メ（９）鱒から
タンク側への流体のＩ１１出ｔ−阻止する逆止弁ａ■Ｉ
皺逆正逆止弁−と麓列ＯＡイパス（２）（至）Ｋ設は九
善殊讐シー７弁であ為、誼すリーフ弁ａカ鱒は、一方Ｏ
選択■踏の逆止弁ａ＃（ＩＩＫよ）制止電れてＡイパス
（２）（至）を流れ為Ｉンク戻１の流体ｔ）Ｅ力を、他
方の選択回路の油圧幡−タへの流体圧力が上昇すると１
紘健（、腋儲方の選択回踏０滝体圧力が降下す為と１１
ｉ祉高＜１１ように圧力制御す為％Ｏで、例えに第２図
示の如（構成１れる・即ち各リリーフ弁鰭舖はシート（
至）にばｔＸ＠で押し付けられゐに共に該Ｖ−）−を＃
過す為屓１１Ｉ働を賓する針弁−と、皺願部（２）が′
寵す為＆典にム−−）■かｂ流体圧力が導入１れ為第１
圧力ＩＩＩ（至）と、該シート■及び針弁（２）にＩＩ
壜れＡ＆＃ＩＫ］Ｉｔ−）（２）から圧力が導入される
第２１１力意１１＆、諌針弁＠Ｏばね６１，１に抗して
ｔ）ＩｌｊｌＩＩＩＩで第冨圧力重■に適過し１クポー
シ（至）を備え為と共に該針弁（２）のばれａ！論儒０
ｍ１ｌＩｉが面す為ＩＩＳ圧力童＠七を備えるべく構成
され、各リリーフ弁鰭ａｌＩＯＡｊ−ト（財）及び１１
２−）−は正逆流する油圧駆動回路ＵＯ＊路儒及・び逆
止弁ａｓ−〇前方のりｙ　／　＊　Ｉｒ儒に夫々接続さ
れ、４−ト（至）は逆止弁（ハ）ｎｏ＊′Ｊｏタンク員
１儒に饋絖され為、か（てム４−ト（財）に作用す為真
路儒Ｏ圧力が高ま為七針弁（２）はそｏｗｔｏばね（財
）０弾力と釣会う位置まで後退して第２医力宣ｇ４をタ
ン／！ＥＯ第３正方＊＠Ｋｔａ口連遇するがその開口面
積はムポー）（財）ＯＥ力が高い１大暑くなるＯ″ｅ謳
３圧力＊（２）かｈ篇ＳＩＥ力宣（２）へ流れ為タンク
ＸｊＯａｌ１体圧力を低く制御出来、ム４−）　＠　Ｏ
ＢＥ力が＊ｇｔｃ低（なると第８、第島圧４力意＠四間
の開口面積が＊Ｓに狭め−れるＯで選択鴎路偽珍Ｏタン
タｘＪＩＯ流体圧力を高（制御す為ことが出来為。 本発―義置Ｏ作動ｔＳ換弁■會位置（１１）に操作した
場合につｍＩ！―す＆に、ζＯ場舎ｔＩＩＭ凪源■から
Ｏ流体は１１１１＠０＊方の油圧駆動回路Ｕの選択回踏
−を逆止弁（２）を介して油圧部−タ（匍にこれを駆動
すべ（流入し、ｒツム（７）が左方のツイヤ（３）ｔ−
巻取ｐ単側す為のでブーム（１）Ｋは左方に＊＊＊れｘ
、該ブーＡ（１）０旋■に伴ナイ右方のワイヤ（４）は
Ｉツム（２）から引ＩＩ出１１九該ドツム（８）と一体
Ｏ油圧峰−１ＩＩが回転されるが、該毫−メ−の駆動回
路（ＵＯ違選択路・珍は前記の切換弁ａ−の操作によ）
タンク鱒へと接続書れてお１ｔ＊該違択選択ｓｎｏｗ殊
リリーフ弁舖が横路側の圧力によ）開かれ為Ｏｅｌ＊油
圧毫−タ■はＩンプとして比較釣幽幽に＠転出来ゐ、而
してツイヤ（３）の車引長さ＆ツイヤ（４０繰り出し長
さは一款せず、油圧４−１＠０■転数がこれと岡ｙ＃Ｏ
油圧罎−ｌ鱒Ｏａ＠数と不一致となゐが１この鳩舎Ｉン
ゾとして作動する油圧峰−タ（Ｌ＠にはりｙり回踏＆◆
を介して油圧−ンプ（籾の吐出側から或は−ンク■かｂ
過早Ｘな（流量が供給され、ワイヤ（４Ｊの繰ｊ出し長
さく応じた回転を餉臣モータ舖に行なわせ得る。 を曳船Ｏ横揺れに伴なう負荷の揺動等によ１シーム（１
）の旋回方向にカが加わった場合、ワイヤ（３）が緩ん
で駆動中の油圧モータ俤）ｔ）員＊騙滅が生じるＯで駆
動回路軸Ｏａ１択回踏・９０圧力が小さくな）、該選択
回路−〇正圧力導入された駆動回路（Ｌ１ｅｓ殊リリー
フ弁舖はそＯ針弁（２）がばね（財）に押されて菖３圧
力皇（財）から第３圧力富（２）への開口會狭めるため
駆動囲路ａｓｏ＊＃Ｒ回路参９のタンクｘｐＯ圧力を高
めゐ、その結果油圧モータ（ＬＧＫブレーキが掛ってワ
イヤ（４に張力を発生するのでブーム（１）は負荷Ｏ揺
動によみ旋回方向への自由な旋回が阻止され、荷役中の
安全性が高められ為・ 崗ｉＵ換弁象埴を位置（ｌｉｎ）Ｋ切換えればブーム（
１）は逆方向に旋回され、このと１の作動も前記した場
合と略同様である。 このように本発−によると亀はブームを旋回する左右の
ワイヤを捲■し＊）″ツムの８台の油圧モータの冬油圧
駆動回路を切換弁で油圧源とタンクとに選択ｍａされる
選択回路上恒常的にタンクに遍らなるタンク回路とで構
成し、一方Ｏ遺択回路の油圧峰−Ｉかｂタンクへ員ｈ＃
１体の圧力を他方Ｏ選択回路圧力Ｏ上昇によれば低下す
みように４１１殊リリーア弁で制御するようにしたので
、ブームＯ旋■による左右のワイヤＯ皐引長ｉ！ｉ七繰
ｐ出し長さの葺＾を生じても不都合なく旋回させ得、ま
たブームに旋回方向の力が作用した場合に％不必要な旋
回が防止されて安全であ）、そＯ操作を１人のオペレー
タで切換弁を制御するだけで行なえ為ので作業性が向上
す為等Ｏ効果があゐ。 ４　　Ｂ１面の簡単なｌ！― 第１ＩＩは本発ｌｌ！装置の実施例の線因、第２図は本
発′＠装置に用いられ為特殊リリーフ弁の１例０截断儒
ＷＷＩＡである。 （１）−ブーム　　　　　（２）−機部（３）（４）−
ツイヤ　　　　（７）　（８）−１’ラム（９）ａ・−
油１Ｅ４−ｐ　　　１１１輪−油圧駆動回路（２）−タ
）／／　　　　　　Ｂ４−ｊ’ｌ’／回路（Ｌｓ■−逆
止弁　　　　ａη−一特殊すリーフ弁−−油圧源　　　
　　−一一遍択回路 ０３＠、−リ々イＡス 特許出願人　　　内　１）勝　已 代渥人　北村欣− 他２名 ｅ〈ｊ ・重にFig. 1 is a hydraulic circuit diagram of a hydraulic system for a poom swing winch, and Fig. 2 is a vertical sectional view of a special +3 leaf valve. Applicant for the patent: 1) Katsumi, Procedural Supplement to the Director General of the Japan Patent Office, July 211, 1983, Case Description 1982 Patent Application No. 15744'4 2, Name of Invention For Poom Swivel Winch Hydraulic system 3, relationship with the case of the person making the amendment Patent applicant - 1) Katsumi 4, agent 7, contents of amendment Attached specification and Figure 12! ls-li,
Hydraulic system for boom swinging winch from Nagisa's specification L Claims: '5l It - Rotating automatic IEK shaft mounted nine boom for swinging by pulling left and right wires. At K, the left and right V ears are hydraulically operated! -IKm! Stitched drum Kmll
L, a selection circuit that switches both oil FE-=h-10tAE drive circuits, is selectively connected to the hydraulic source and the tank via a valve, and one is connected to the hydraulic source and the other is connected to the tank;
Constantly one/Kll! ! ! Each selection circuit Kt#1FEq knee of each hydraulic drive circuit
A check valve is interposed to prevent the flow of O from the armpit to the tank, and an A path that does not extend to the armpit is installed in parallel with the armpit check valve. According to the increase in fluid pressure in the selected circuit/path of the hydraulic drive circuit, the fluid pressure in the pipe A is lowered (the special relief valve t to be controlled
- Hydraulic system for one-time pinching of I-boom tI. ! DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic system for a nine-boom swing winch, which is suitable for installation primarily on ships such as fishing boats. Conventionally, the machine part of this type of quinte seam is rotatably attached to the shaft, and is attached to the boom to pull the left and right wires. Since the left and right wires are usually pulled through pulleys, unless the seam 0@ section is located on the central axis between the left and right pulleys, the pulling length and unwinding length of the left and right wires will be minimum. For example, in cases where the boom mechanism is often mounted on one side of the ship for operational efficiency, such as on a fishing boat, each wire must be manually operated by # number of workers, or One operation is controlled by a separate knob, and nine hydraulic peaks are operated by two voice-driven O-drums.The workability is poor and the fishing load oscillates as the boat oscillates, making it difficult to turn. There was a drawback that the boom could not be stopped due to the fluctuation of the boom. The present invention aims to prevent such drawbacks, and has a winch boom whose root part is rotatably attached to a shaft, which can be rotated by pulling left and right wires. Wrap the wire around a drum fitted with a hydraulic motor,
A selection circuit in which the hydraulic drive circuits of both hydraulic motors are selectively connected to the hydraulic power source and the tank via a switching valve, one of which is connected to the hydraulic power source and the other to the tank, and a tank that is permanently connected to the tank. A check valve is interposed in each selection circuit of each hydraulic drive rm11 to block the flow from the hydraulic motor to the tank, and a check valve is provided in parallel with the check valve to connect the hydraulic motor to the tank. The pie 9 is set up, and the pie 9
The present invention is characterized in that a special relief valve is provided for controlling the fluid pressure of the Pinos in accordance with the increase in the fluid pressure of the selection circuit of the other hydraulic drive circuit. In Fig. 1, (1) shows a boom in which the machine part (2) is rotatably attached to the deck of a fishing boat, etc., and the Fi skeleton part (2) of the boom (1) is shown. As a fulcrum, multiple wires of suitable fibers (not shown) are used as a fulcrum to hold down the current.A load of fish, etc., is pulled up using the wires running along the armpit boom.
(3) (4) are wires that are attached to the wrinkle boom (1) and extend left and right, (53 (6J) are each wire (31 (4) 4D
Musu Nakaseki, with 11 pulleys, Isada Day A (1) Part 011 (
2) The left pulley (5) is placed on the central axis of both pulleys (5) and (8) to test it. (1) Seven pulleys (5) (6) The condition of the seam (wire 0 when running 130 m)
The traction length and the JI extension length ili# are not equal.
(7) (The sum is each wire (31 (4 meetings)
To put out the oil in the opposite direction, the hydraulic cylinder (9)-1: Drawer rotating on the hook, and the same volume of oil from the Ua2 expansion hydraulic power source (to) to the tank via the oil jE4-voice (9) all. In the hydraulic drive circuit that is equipped with
Consisting of a selector mm@a that is selectively connected to the link I, and a constant 4-hydraulic motor (9H1l/F/wheel), in the example of the m-fist, there is a ■Tread a1) u's one step I degree turn rA4t - 1 % in common, so it's a great composition.It was 5K. U- is oil ME Hatame (9) Trout and switching valve Trout 7 O
Large oil pressure order to intervene in the N0hen ma step Sanchin - Me (9) I11 outflow of fluid from the trout to the tank side - Check valve a I to prevent
Wrinkle reverse positive check valve - and foot row OA Ipass (2) (to) K setting is 7 valves, and leaf valve a is 7 valves, while O
Selection - Step on the check valve a# (IIK) Stops the current and flows through the A path (2) (To) I Ink returns 1 fluid t) E force to the hydraulic valve of the other selection circuit When the fluid pressure increases, 1
Hiroken (, the choice of the armpit is 0 because the body pressure decreases and 11
In order to control the pressure such that i safety height < 11%O, for example, as shown in the second figure (configuration 1), that is, each relief valve fin or seat (
To) is pressed by tX@ and both V-)- is #
The needle valve that invites the 11th work to pass, and the wrinkle request part (2)'
To maintain & normally move -) ■ or b Fluid pressure is introduced 1.
Pressure III (to) and II to the seat ■ and needle valve (2)
Pressure is introduced from the bottle A&#IK]It-) (2) against the 211th force 11 &, the needle valve @O spring 61, 1, and the pressure is applied to the 21st pressure force at IljlIII. 1 kuposhi (to) and the needle valve (2) is exposed a! Confucianism 0
The m1lIi is configured to have an IIS pressure head @7 for facing, and each relief valve fin alIOAj-t (Foundation) and 11
2-)- are connected to the forward and reverse hydraulic drive circuit UO*Road and the check valve AS-〇 forward direction Y/*Ir, respectively, and 4-T (to) is the check valve (C) no. ＊'Jo tank member 1 is forced to act on the force, so the pressure increases, so the seven-needle valve (2) is sowto spring 0. Retreat to a position that balances the elasticity and press the second medical power declaration g4/! EO third square * @ Kta mouth, but the opening area is Mpo) (Foundation) OE power is high 1 becomes very hot O'' It is possible to control the pressure of the tank XjOal1 to a low level due to the flow to e-3 pressure * (2) or h-edition SIE force statement (2), MU4-) @ O
When the BE force is *gtc low (the 8th, island pressure 4 power @ 4th opening area is narrowed to *S), select Ouji Seishin O Tanta x JIO fluid pressure is high (to control Happened. When the main source - O operation tS switching valve ■ is operated to the position (11), the O fluid is hydraulically driven from the ζO position tIIM calm source ■ to the 1111 @ 0 * direction. The selected turn of the circuit U should be driven through the check valve (2) to the hydraulic section (2), and the r (7) is connected to the left wheel (3) (3).
Since the winding p is on one side, the boom (1) K should be turned to the left.
As the boo A (1) turns 0, the right wire (4) is pulled out from the I knob (2) and the dot (8) and the O hydraulic peak -1 II are rotated, The drive circuit for this cylinder (UO different selection path/unchanged is by operation of the switching valve a-)
The oil pressure valve connected to the tank trout is opened by pressure on the side of the road. ,Then, the wheel pull length and Tsuiya (40) of Tsuiya (3) are not specified at all, and the hydraulic pressure is 4-1 @ 0.
There is no discrepancy with the hydraulic pressure Oa@ number, but the hydraulic pressure peak that operates as this pigeon coop (L@) is
Hydraulic pump (from the paddy discharge side or pump)
An excessive flow rate is supplied, and the wire (4J) can be caused to rotate according to the length of the wire (4J). (1
), the wire (3) loosens and the hydraulic motor is being driven. The selection circuit - 〇 The drive circuit into which positive pressure is introduced (L1es special relief valve or O needle valve (2) is pushed by the spring (goods) and the iris 3 pressure pressure (goods) is changed to the 3rd pressure wealth (2) In order to narrow the opening to the drive enclosure, the tank xpO pressure in the drive enclosure aso The swing prevents free rotation in the turning direction, increasing safety during cargo handling. By switching the switch valve to position (lin) K, the boom (
1) is rotated in the opposite direction, and the operation of this and 1 is substantially the same as in the case described above. According to this report, the tortoise winds the left and right wires that rotate the boom *)'' The winter hydraulic drive circuit of the eight hydraulic motors of the tortoise is selected as the hydraulic source or tank using a switching valve. It consists of a tank circuit that constantly goes around the tank on the selection circuit, and on the other hand, the hydraulic pressure peak of the O selection circuit - I or B is connected to the tank h#
Since the pressure of one body is controlled by the 411 special relief valve so that it decreases as the pressure of the other O selection circuit increases, the left and right wires O are stretched by the boom O rotation. It is possible to rotate the boom without any inconvenience even if a roof with a length of 7 p is generated, and when a force in the direction of rotation is applied to the boom, unnecessary rotation is prevented and safe), so that the operation is This can be done by just one operator controlling the switching valve, which improves work efficiency and has other benefits. 4 Simple l on side B1! - The 1st II is the main one! Figure 2 shows an example of a special relief valve used in the device according to the present invention. (1) - Boom (2) - Machine part (3) (4) -
Tsuiya (7) (8)-1' Ram (9)a・-
Oil 1E4-p 111 wheels-hydraulic drive circuit (2)-ta) // B4-j'l'/circuit (Ls■-check valve aη-special leaf valve--hydraulic source
-Eleven selection circuit 03@, -Lyris A patent applicant: 1) Katsu, Atsushi Ishiro, Kin Kitamura- and 2 others e〈j ・Shigeni

Claims (1)

【特許請求の範囲】 １、ブームの設置位置が左右滑車の中心でなｉ場合、ブ
ームを１本め油圧操作ハンドルで左右ワイヤーを常時一
定のテンションを保たせて旋回させる油圧回路。 ２、ブームの設置場所全体が横揺れして居る状態でも左
右ワイヤーを一定テンションに保たせる為の特殊油圧Ｉ
Ｊ　Ｑ−フ弁。[Claims] 1. When the boom is not installed at the center of the left and right pulleys, a hydraulic circuit allows the boom to be rotated using the first hydraulic operation handle while keeping the left and right wires at a constant tension. 2. Special hydraulic pressure I to keep the left and right wires at a constant tension even when the entire boom installation location is shaking horizontally.
J Q-fu valve.