JPH026066Y2 - - Google Patents

Description

【考案の詳細な説明】 産業上の利用分野 本考案は、作動・非作動状態の切換えを迅速か
つ確実に行ない得るレバー式ホイストに関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lever-type hoist that can be quickly and reliably switched between active and inactive states.

従来の技術 従来のこの種装置は、例えば、特開昭59−7696
号公報に開示されている。このものは、装置の駆
動軸に速回し用把手が回動および軸方向移動自在
に嵌設され、駆動軸の後端部に固定された係止部
材と速回し用把手とに、駆動軸に対しその把手を
ブレーキ弛緩方向に回動させるように働くブレー
キ弛緩用捻りばねが係合され、駆動軸に螺合され
たブレーキ部の駆動部材と速回し用把手とが連結
用捻りばねを介して連結され、駆動軸および速回
し用把手のうちの一方には、係止突起が固定さ
れ、他方にはその係止突起に係合されるブレーキ
過弛緩防止用係止部およびブレーキ締付位置保持
用係止部が設けられた構成となつている。Conventional technology A conventional device of this kind is, for example, disclosed in Japanese Patent Application Laid-Open No. 59-7696.
It is disclosed in the publication No. In this device, a quick-turning handle is fitted onto the drive shaft of the device so that it can rotate and move in the axial direction, and a locking member fixed to the rear end of the drive shaft and the quick-turning handle are attached to the drive shaft. On the other hand, a brake release torsion spring that rotates the handle in the brake release direction is engaged, and the drive member of the brake part screwed to the drive shaft and the quick rotation handle are connected via the connection torsion spring. A locking protrusion is fixed to one of the drive shaft and the quick-turning handle, which are connected to each other, and a locking part for preventing excessive loosening of the brake and a brake tightening position holding part are engaged with the locking protrusion on the other side. It has a structure in which a locking part is provided.

考案が解決しようとする問題点 従来のように、駆動軸に螺合されたブレーキ部
の駆動部材と速回し用把手とを連結用捻りばねを
介して連結すると、駆動部材と速回し用把手との
間に連結用捻りばねを装着するスペースを設ける
必要があるほか、駆動部材と速回し用把手とに連
結用捻りばねの両端を係止する係止孔を設けなけ
ればならないから、駆動軸方向の寸法が大きくな
るとともに装置の構成が複雑になる。Problems to be Solved by the Invention When the drive member of the brake part screwed onto the drive shaft and the quick-turn handle are connected via a connecting torsion spring as in the past, the drive member and the quick-turn handle are connected together. It is necessary to provide a space for installing the connecting torsion spring between the two, and it is also necessary to provide locking holes for locking both ends of the connecting torsion spring in the drive member and the quick-turning handle. As the dimensions of the device increase, the configuration of the device becomes more complex.

また、重い荷重が掛かつている時に誤つて遊転
操作をしても、駆動軸が急速に反時計方向に回転
してブレーキ作用を発生するが、軽荷重が掛かつ
ている時に誤つて遊転操作をした場合、駆動軸を
反時計方向に回転する力が弱いので、ブレーキ部
と駆動部材とはブレーキ作用が発生する状態に迅
速に戻らずかつとも回りをするから、誤操作によ
つて荷物が落下する危険があつた。 In addition, even if you mistakenly perform an idling operation when a heavy load is applied, the drive shaft will rapidly rotate counterclockwise and generate a braking action, but if you erroneously perform an idling operation when a light load is applied. If this occurs, the force to rotate the drive shaft counterclockwise is weak, so the brake part and drive member do not quickly return to the state where the brake action occurs and rotate together, causing the cargo to fall due to incorrect operation. There was a danger of doing so.

問題点を解決するための手段 本考案は前記問題点を解決するため、一対の側
板間にロードシーブを保持し、該側板の一方とロ
ードシーブに挿通された駆動軸の操作レバー関着
部との間のねじ部に摩擦ブレーキ機構を担持する
被駆動部材と駆動部材とを螺合し、駆動軸の他端
のピニオンとロードシーブ間に歯車伝動系列を備
えたレバー式ホイストにおいて、被駆動部材と駆
動部材とを逆向きに形成した駆動軸のねじ部に螺
合し、駆動部材から突出する駆動軸に形成された
軸方向の凸条にフランジ付きのばね保持輪を嵌合
して脱落しないように取付け、該ばね保持輪の外
側にこれと嵌合する手動操作輪を設け、この手動
操作輪の底壁部に駆動部材の端面に形成される扇
形状の凹穴に突出する係合突部を設け、ばね保持
輪を挿通させる手動操作輪の底壁開口部に軸方向
の凸条を形成するとともに、この凸条と対向する
ばね保持輪の先端外周部に駆動部材側から順にブ
レーキ締付け位置保持用の係止部とブレーキ解除
位置保持用の係止部とを周方向の異なる位置に設
け、手動操作輪の底壁部とばね保持輪のフランジ
部との間に、手動操作輪を周方向に付勢する付勢
部材を装着したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention holds a load sheave between a pair of side plates, and connects one of the side plates to the operating lever joint of the drive shaft inserted through the load sheave. In a lever-type hoist in which a driven member carrying a friction brake mechanism and a driving member are screwed together in a threaded portion between them, and a gear transmission train is provided between a pinion at the other end of the drive shaft and a load sheave, the driven member and the drive member are screwed into the threaded portion of the drive shaft formed in opposite directions, and a flanged spring retaining ring is fitted to the axial protrusion formed on the drive shaft protruding from the drive member to prevent it from falling off. A manually operated wheel is provided on the outside of the spring retaining ring to fit therewith, and an engaging protrusion is provided on the bottom wall of the manually operated wheel that protrudes into a fan-shaped recessed hole formed on the end surface of the drive member. A convex strip in the axial direction is formed in the bottom wall opening of the manually operated wheel through which the spring retaining ring is inserted, and a brake is tightened sequentially from the driving member side on the outer periphery of the tip of the spring retaining ring facing the convex strip. A locking part for holding the position and a locking part for holding the brake release position are provided at different positions in the circumferential direction, and the manually operated wheel is placed between the bottom wall of the manually operated wheel and the flange of the spring retaining ring. It is equipped with a biasing member that biases in the circumferential direction.

作 用 付勢力に抗して手動操作輪をブレーキ締付け方
向に回転し、駆動軸の軸方向に移動して底壁開口
部の凸条をばね保持輪のブレーキ締付け位置保持
用の係止部に係止すると、摩擦ブレーキ機構は駆
動部材に押圧されて作動状態となるから、操作レ
バーによつて荷物の巻上げ、巻下しが可能な状態
となる。また、手動操作輪をブレーキ締付け位置
から駆動軸の軸方向に移動して前記凸条でばね保
持輪のブレーキ解除位置保持用の係止部に係止す
ると、駆動部材は摩擦ブレーキ機構から離れて遊
転し得るから、ロードチエーンは、手動操作輪の
回転またはロードチエーンを引張ることにより、
軽荷重で迅速に移動される。Action The manually operated wheel rotates in the brake tightening direction against the biasing force, moves in the axial direction of the drive shaft, and the convex strip on the bottom wall opening becomes the locking part for holding the brake tightening position of the spring retaining wheel. When locked, the friction brake mechanism is pressed by the drive member and becomes operational, so that the load can be hoisted up or down by the operating lever. Further, when the manually operated wheel is moved in the axial direction of the drive shaft from the brake tightening position and is locked with the locking part for holding the brake release position of the spring retaining wheel by the protrusion, the driving member is separated from the friction brake mechanism. Since the load chain can rotate freely, the load chain can be rotated by rotating the manually operated wheel or by pulling the load chain.
Moves quickly with light loads.

しかも、駆動部材と被駆動部材は駆動軸の逆向
きのねじ部に螺合されているから、手動操作輪の
回転による駆動部材と被駆動部材の押圧および押
圧解除は、従来の場合に比べて確実であり、軽荷
重が掛かつている場合の誤操作によつても迅速に
ブレーキ作用に戻るので、より安全となる。 Moreover, since the driving member and the driven member are screwed together with threads in opposite directions on the drive shaft, the pressing and releasing of the driving member and the driven member by rotation of the manual operation wheel is easier than in the conventional case. It is reliable, and even if there is an erroneous operation when a light load is applied, the braking action can be quickly restored, making it safer.

実施例 一対の側板１，２間には、軸受３，３によりロ
ードシーブ４が保持されており、その中心部の貫
通孔４ａを通して、駆動軸５が挿通されている。
駆動軸５は、ロードシーブ４を貫通する側板２側
に、段差を設けて左ねじ部５ａと右ねじ部５ｂと
が逆向きに形成されていて、側板２に近い方の左
ねじ部５ａには、小径部に摩擦ブレーキ機構を担
持する被駆動部材６が螺合され、右ねじ部５ｂに
は、外周に歯車７ａが形成された駆動部材７が螺
合されている。Embodiment A load sheave 4 is held between a pair of side plates 1 and 2 by bearings 3 and 3, and a drive shaft 5 is inserted through a through hole 4a in the center thereof.
The drive shaft 5 is provided with a step on the side plate 2 side passing through the load sheave 4, and a left-handed threaded portion 5a and a right-handed threaded portion 5b are formed in opposite directions. A driven member 6 carrying a friction brake mechanism is screwed into the small diameter portion, and a driving member 7 having a gear 7a formed on the outer periphery is screwed into the right-hand threaded portion 5b.

摩擦ブレーキ機構は、被駆動部材６の小径部に
嵌合される逆転防止用ラチエツトホイール８の両
側面を挟着する２個の環状摩擦板９よりなつてお
り、ラチエツトホイール８には、側板２に固設の
ピン１０に装着されてばね１１によりラチエツト
ホイール８側に付勢される制動爪１２が係止され
ていて、ラチエツトホイール８をロードシーブ４
の巻上げ方向にのみ回転を許容している。駆動部
材７は、環状摩擦板９と対向する位置に環状凸部
７ｂが形成されるとともに、反対側の側面周辺部
に扇形状の凹穴７ｃが設けられている。 The friction brake mechanism consists of two annular friction plates 9 that sandwich both sides of a ratchet wheel 8 for preventing reverse rotation that is fitted into the small diameter portion of the driven member 6. A brake pawl 12 is attached to a pin 10 fixed to the side plate 2 and is biased toward the ratchet wheel 8 by a spring 11, and is engaged with the brake pawl 12 to move the ratchet wheel 8 toward the load sheave 4.
Rotation is allowed only in the winding direction. The drive member 7 has an annular protrusion 7b formed at a position facing the annular friction plate 9, and a sector-shaped recessed hole 7c in the periphery of the opposite side.

駆動軸５は、駆動部材７から突出している部分
に複数の凸条５ｃが形成されており、この凸条５
ｃの部分には、これに嵌合する凹溝１３ａを有す
るフランジ１３ｂ付きのばね保持輪１３が嵌合さ
れていて、軸端に形成された小径のねじ５ｄと螺
合するナツト１４により、駆動軸５から脱落しな
いように固定されている。ばね保持輪１３の先端
外周部には、駆動部材７側から順にブレーキ締付
け位置保持用の係止部１３ｃとブレーキ解除位置
保持用の係止部１３ｄとが、周方向の異なる位置
に設けられている。 The drive shaft 5 has a plurality of protrusions 5c formed on a portion protruding from the drive member 7.
A spring retaining ring 13 with a flange 13b having a concave groove 13a that fits into the spring retaining ring 13 is fitted into the part c, and is driven by a nut 14 that is screwed into a small diameter screw 5d formed at the end of the shaft. It is fixed so that it does not fall off the shaft 5. A locking part 13c for holding the brake tightening position and a locking part 13d for holding the brake release position are provided at different positions in the circumferential direction on the outer circumference of the tip of the spring retaining ring 13, in order from the drive member 7 side. There is.

１５はばね保持輪１３の外側に嵌合された手動
操作輪で、該手動操作輪１５は、底壁部に駆動部
材７の凹穴７ｃ内に突出する係合突部１５ａが設
けられるとともに、ばね保持輪１３の先端外周部
が挿通する底壁開口部１５ｂに、ばね保持輪１３
の係止部１３ｃ，１３ｄと係合し得る凸条１５ｃ
が設けられており、操作部には、滑り止めのため
係止凹部１５ｄが形成されている。手動操作輪１
５は、その底壁部とばね保持輪１３のフランジ１
３ｂとの間に装着されたばね１６により、ブレー
キ締付け方向に付勢されている。 Reference numeral 15 denotes a manually operated wheel fitted to the outside of the spring retaining ring 13, and the manually operated wheel 15 is provided with an engaging protrusion 15a projecting into the recessed hole 7c of the drive member 7 on the bottom wall. The spring retaining ring 13 is inserted into the bottom wall opening 15b through which the outer circumference of the tip of the spring retaining ring 13 is inserted.
A protruding strip 15c that can be engaged with the locking portions 13c and 13d of
A locking recess 15d is formed in the operating section to prevent slippage. Manual control wheel 1
5 is the bottom wall portion and the flange 1 of the spring retaining ring 13;
3b, the spring 16 is biased in the brake tightening direction.

被駆動部材６、ラチエツトホイール８とこれに
係合する制動爪１２、および駆動部材７の環状凸
部７ｂの一部を被覆する金属製のブレーキカバー
１７が、側板２に固着されており、該ブレーキカ
バー１７の環状凸部７ｂと対向する部分に形成さ
れた折り返しの固定支持環１７ａには、金属板製
である操作レバー１８の基端部のＵ形回動支持環
１８ａが回動自在に装着されている。 A metal brake cover 17 that covers the driven member 6, the ratchet wheel 8, the brake pawl 12 that engages therewith, and a part of the annular convex portion 7b of the drive member 7 is fixed to the side plate 2. A U-shaped rotary support ring 18a at the base end of the operating lever 18 made of a metal plate is rotatably attached to a folded fixed support ring 17a formed in a portion of the brake cover 17 facing the annular convex portion 7b. is installed on.

操作レバー１８の内側構成部材１８ｂと外側構
成部材１８ｃとは、その間に固定される内側に雌
ねじを有するスペーサ１９とそれに螺合するボル
ト２０により結合されている。また、操作レバー
１８には、公知のように軸２１に保持された左右
に２個の係合爪２２ａ，２２ｂを有する駆動部材
７の回転方向を切換える切換え爪２２が設けられ
ていて、弾性押圧部材２３により、駆動部材７の
歯車７ａが作用し得るようになつている。２４は
操作レバー１８から突出している軸２１の部分に
取付けられた操作つまみである。 The inner component 18b and the outer component 18c of the operating lever 18 are connected by a spacer 19 fixed therebetween and having a female thread on the inside, and a bolt 20 screwed into the spacer 19. Further, the operating lever 18 is provided with a switching claw 22 that switches the rotational direction of the drive member 7, which has two left and right engaging claws 22a and 22b held on a shaft 21 as is known in the art. The member 23 allows the gear 7a of the drive member 7 to act. 24 is an operating knob attached to a portion of the shaft 21 protruding from the operating lever 18.

ロードシーブ４を貫通した側板１側の駆動軸５
には、ピニオン２５が固着されており、該ピニオ
ン２５とロードシーブ４４に取付けられた歯車２
６との間の動力伝達は、ギヤーカバー２７内に収
納された公知の歯車伝動系列２８により行なわれ
る。ロードシーブ４を保持する一対の側板１，２
は、周辺部を少なくとも３個のステーボルト２９
によつて一定間隔を保つように結合されているほ
か、連結金具３０を介してホイスト吊下げ用のフ
ツク３１が連結されている。ロードシーブ４に巻
付けられるロードチエーン３２の一端には、別の
連結金具３３を介して荷物吊下げ用のフツク３４
が連結されている。 Drive shaft 5 on side plate 1 side passing through load sheave 4
A pinion 25 is fixed to the pinion 25, and the gear 2 attached to the load sheave 44 is connected to the pinion 25.
6 is carried out by a known gear transmission train 28 housed within the gear cover 27. A pair of side plates 1 and 2 that hold the load sheave 4
At least three stay bolts 29 around the periphery
In addition to being connected to each other at a constant interval by a hoist, a hook 31 for hanging the hoist is connected via a connecting fitting 30. At one end of the load chain 32 wrapped around the load sheave 4, a hook 34 for hanging cargo is connected via another connecting fitting 33.
are connected.

次に装置の動作について説明する。 Next, the operation of the device will be explained.

第１図および第３図は、荷物の巻上げ、巻下し
が可能な作動状態、すなわちブレーキ締付け状態
を示すものであつて、ばね１６の付勢力により、
手動操作輪１５は、凸条１５ｃがばね保持輪１３
のブレーキ締付け位置保持用の係止部１３ｃに係
止する位置まで回転されている。この状態におい
て、操作レバー１８を反覆回動させると、切換え
爪２２によつて一方向に回転される駆動部材７に
より、摩擦板９、被駆動部材６を介して駆動軸５
とともにピニオン２５が回転され、これと噛合う
歯車伝動系列２８によつて回転されるロードシー
ブ４により、フツク３４に吊下げられた荷物の巻
上げまたは巻下しが行なわれる。 1 and 3 show the operating state in which the load can be hoisted up and down, that is, the brake is tightened, and due to the biasing force of the spring 16,
The manually operated wheel 15 has a protrusion 15c that is connected to the spring retaining wheel 13.
It has been rotated to a position where it is locked in the locking part 13c for holding the brake tightening position. In this state, when the operating lever 18 is repeatedly rotated, the drive member 7 rotated in one direction by the switching pawl 22 causes the drive shaft 5 to move through the friction plate 9 and the driven member 6.
At the same time, the pinion 25 is rotated, and the load sheave 4, which is rotated by the gear transmission train 28 meshing with the pinion 25, winds up or lowers the load suspended from the hook 34.

第１図に示す作動状態から第１３図に示す非作
動状態、すなわちロードシーブ４を遊転可能な状
態に切換える場合には、手動操作輪１５を把持し
て軸方向に引張ると、係止部１３ｃに沿つて移動
する手動操作輪１５は、凸条１５ｃが係止部１３
ｃによる係止を解除された所でばね１６の付勢力
により反時計方向に回転され、ばね保持輪１３の
ブレーキ解除位置保持用の係止部１３ｄに係止さ
れたのち（第１２図）、ばね保持輪１３と一体に
なつている駆動軸５を時計方向に回転する。 When switching from the operating state shown in FIG. 1 to the non-operating state shown in FIG. The manually operated wheel 15 that moves along the line 13c has a protrusion 15c that is connected to the locking portion 13.
After being released from the lock by the brake lever c, it is rotated counterclockwise by the biasing force of the spring 16 and is locked by the locking portion 13d of the spring retaining ring 13 for holding the brake release position (FIG. 12). The drive shaft 5, which is integrated with the spring retaining ring 13, is rotated clockwise.

この場合、前記手動操作輪１５の係合突部１５
ａは、駆動部材７の凹穴７ｃに係合していて駆動
部材７の回転を静止させる作用をするので、駆動
軸５の右ねじ部５ｂに螺合している駆動部材７
は、軸外端の右方向に向けて微小量ずつ移動する
が、左ねじ部５ａと螺合している被駆動部材６
は、ブレーキ作用が働いて静止されている間反対
方向に微小量ずつ移動するから、駆動部材７は、
摩擦板９との圧着から迅速に解放される。この状
態では、摩擦板９と駆動部材７との間のブレーキ
効果は解除されているので、ロードチエーン３２
を引張るか手動操作輪１５を回転することによ
り、荷物吊上げ用フツク３４の早戻し操作を行な
うことができる。 In this case, the engagement protrusion 15 of the manual operation wheel 15
a is engaged with the recessed hole 7c of the drive member 7 and acts to stop the rotation of the drive member 7, so the drive member 7 screwed into the right-hand threaded portion 5b of the drive shaft 5
The driven member 6, which is screwed into the left-hand threaded portion 5a, moves by a minute amount toward the right of the outer end of the shaft.
Since the driving member 7 moves minutely in the opposite direction while being stopped by the brake action, the driving member 7 is
It is quickly released from the pressure bonding with the friction plate 9. In this state, the braking effect between the friction plate 9 and the drive member 7 is released, so the load chain 32
By pulling or rotating the manual operation wheel 15, the load lifting hook 34 can be quickly returned.

次に、第１３図に示す非作動状態から第１図に
示す作動状態に切換える場合には、ロードチエー
ン３２を手を保持し、駆動軸５の回転を停止した
状態で手動操作輪１５をばね１６の付勢力に抗し
て時計方向に回転すると、凸条１５ｃがブレーキ
締付け保持用の係止部１３ｃと係合し得る位置に
きた手動操作輪１５は、軸方向に圧縮されている
ばね１６の付勢作用によつて駆動部材７側に押し
出され、前記係止部１３ｃに係止される。この状
態になると、ばね１６のねじり付勢作用によつて
手動操作輪１５は時計方向に回転されるから、係
合突部１５ａによつて同方向に回転される駆動部
材７は、被駆動部材６側に移動して摩擦板９との
間にブレーキ作用を発生する。しかも、この場
合、被駆動部材６は駆動部材７と逆向きの左ねじ
部５ａに螺合していてとも回りをしないから、軽
荷重が掛かつている場合の誤操作によつても迅速
にブレーキ作用に戻るので、ブレーキ作用は確実
になり、より安全となる。 Next, when switching from the non-operating state shown in FIG. 13 to the operating state shown in FIG. When the manually operated wheel 15 rotates clockwise against the biasing force of the spring 16, the manually operated wheel 15 reaches a position where the protrusion 15c can engage with the locking portion 13c for tightening and holding the brake, and the spring 16 compressed in the axial direction It is pushed out toward the drive member 7 by the urging action of and is locked by the locking portion 13c. In this state, the manually operated wheel 15 is rotated clockwise by the torsional biasing action of the spring 16, so that the driving member 7, which is rotated in the same direction by the engagement protrusion 15a, is rotated by the driven member. 6 side and generates a braking action between it and the friction plate 9. Moreover, in this case, even if the driven member 6 is screwed into the left-hand threaded portion 5a in the opposite direction to the driving member 7, it does not rotate, so that the brake can be applied quickly even if an erroneous operation occurs when a light load is applied. , the braking action becomes more reliable and safer.

それ故、操作レバー１８の反覆回動によつて、
前記した如く、荷物の巻上げ、巻下しを行なうこ
とができる。 Therefore, by repeatedly rotating the operating lever 18,
As described above, the load can be hoisted up and down.

考案の効果 本考案によれば、部品点数を少なくして構成を
簡単にすることができるだけでなく、手動操作輪
を回転したり軸方向に移動するだけの簡単な操作
により、レバー式ホイストを作動状態と非作動状
態とに容易に切換えることができる。しかも、被
駆動部材と駆動部材とは駆動軸の逆向きのねじ部
に螺合したから、軽荷重が掛かつている場合の誤
操作によつても迅速にブレーキ作用に戻るので、
ブレーキ作用は確実となり、ブレーキ作用の解除
は安全にかつ迅速に行なうことができる。Effects of the invention According to the invention, not only can the number of parts be reduced to simplify the configuration, but also the lever type hoist can be operated by simply rotating the manual operation wheel or moving it in the axial direction. It can be easily switched between active and inactive states. Moreover, since the driven member and the driving member are threaded onto opposite threaded portions of the drive shaft, braking action can be quickly restored even if an erroneous operation occurs when a light load is applied.
The braking action becomes reliable and the braking action can be released safely and quickly.

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

第１図は本考案の一実施例を示す作動状態の縦
断側面図、第２図は同右正面図、第３図は第１図
の要部拡大断面図、第４図は手動操作輪の下半分
を断面で示した側面図、第５図は同右平面図、第
６図はばね保持輪の平面図、第７図は同右側面
図、第８図はばね保持輪の斜視図、第９図は作動
状態における駆動部材と手動操作輪の係合突部の
関係を示す断面図、第１０図は作動状態における
手動操作輪とばね保持輪の係合関係を示す断面
図、第１１図と第１２図はそれぞれ第９図と第１
０図に対応する非作動状態における断面図、第１
３図は第３図に対応する非作動状態における要部
縦断面図である。 １，２……側板、４……ロードシーブ、５……
駆動軸、５ａ，５ｂ……逆ねじ、５ｃ……凸条、
６……被駆動部材、７……駆動部材、７ｃ……凹
穴、１３……ばね保持輪、１３ｂ……フランジ、
１３ｃ……ブレーキ締付け位置保持用の係止部、
１３ｄ……ブレーキ解除位置保持用の係止部、１
５……手動操作輪、１５ａ……係合突部、１５ｂ
……底壁開口部、１５ｃ……凸条、１６……付勢
部材（ばね）、１８……操作レバー、２５……ピ
ニオン、２８……歯車伝動系列。 Fig. 1 is a vertical side view showing an embodiment of the present invention in an operating state, Fig. 2 is a right front view of the same, Fig. 3 is an enlarged sectional view of the main part of Fig. 1, and Fig. 4 is a bottom view of the manual operation wheel. 5 is a right plan view of the same, FIG. 6 is a plan view of the spring retaining ring, FIG. 7 is a right side view of the same, FIG. 8 is a perspective view of the spring retaining ring, FIG. The figure is a sectional view showing the relationship between the driving member and the engagement protrusion of the manually operated wheel in the operating state, FIG. 10 is a sectional view showing the engagement relationship between the manually operating wheel and the spring retaining ring in the operating state, and Figure 12 is Figure 9 and 1, respectively.
Cross-sectional view in the inoperative state corresponding to figure 0, 1st
FIG. 3 is a vertical sectional view of the main part in the non-operating state corresponding to FIG. 3. 1, 2...Side plate, 4...Load sheave, 5...
Drive shaft, 5a, 5b... Reverse thread, 5c... Convex thread,
6... Driven member, 7... Drive member, 7c... Recessed hole, 13... Spring retaining ring, 13b... Flange,
13c...Locking part for holding the brake tightening position,
13d...Locking part for holding the brake release position, 1
5... Manual operation wheel, 15a... Engaging protrusion, 15b
...Bottom wall opening, 15c...Convex strip, 16...Biasing member (spring), 18...Operation lever, 25...Pinion, 28...Gear transmission train.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一対の側板間にロードシーブを保持し、該側板
の一方とロードシーブに挿通された駆動軸の操作
レバー関着部との間のねじ部に摩擦ブレーキ機構
を担持する被駆動部材と駆動部材とを螺合し、駆
動軸の他端のピニオンとロードシーブ間に歯車伝
動系列を備えたレバー式ホイストにおいて、被駆
動部材と駆動部材とを逆向きに形成した駆動軸の
ねじ部に螺合し、駆動部材から突出する駆動軸に
形成された軸方向の凸条にフランジ付きのばね保
持輪を嵌合して脱落しないように取付け、該ばね
保持輪の外側にこれと嵌合する手動操作輪を設
け、この手動操作輪の底壁部に駆動部材の端面に
形成される扇形状の凹穴に突出する係合突部を設
け、ばね保持輪を挿通させる手動操作輪の底壁開
口部に軸方向の凸条を形成するとともに、この凸
条と対向するばね保持輪の先端外周部に駆動部材
側から順にブレーキ締付け位置保持用の係止部と
ブレーキ解除位置保持用の係止部とを周方向の異
なる位置に設け、手動操作輪の底壁部とばね保持
輪のフランジ部との間に、手動操作輪を周方向に
付勢する付勢部材を装着したことを特徴とするレ
バー式ホイスト。 A driven member and a driving member that hold a load sheave between a pair of side plates and carry a friction brake mechanism in a threaded portion between one of the side plates and an operating lever joint of a drive shaft inserted through the load sheave. In a lever type hoist with a gear transmission system between the pinion and load sheave at the other end of the drive shaft, the driven member and the driving member are screwed onto the threaded part of the drive shaft formed in opposite directions. , a spring retaining ring with a flange is fitted onto an axial protrusion formed on a drive shaft protruding from the drive member so as not to fall off, and a manually operated wheel is fitted on the outside of the spring retaining ring. A bottom wall of the manual operation wheel is provided with an engaging protrusion that protrudes into a fan-shaped recessed hole formed on the end surface of the drive member, and an engagement protrusion is provided in the bottom wall of the manual operation wheel through which the spring retaining ring is inserted. An axial protrusion is formed, and a locking part for holding the brake tightening position and a locking part for holding the brake release position are provided in order from the drive member side on the outer circumference of the tip of the spring retaining ring facing the protrusion. A lever type lever type, characterized in that urging members are installed at different positions in the circumferential direction and bias the manually operated wheel in the circumferential direction between the bottom wall of the manually operated wheel and the flange of the spring retaining ring. Hoist.