JP4272982B2 - Hoisting and towing machine - Google Patents

Hoisting and towing machine Download PDF

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JP4272982B2
JP4272982B2 JP2003430920A JP2003430920A JP4272982B2 JP 4272982 B2 JP4272982 B2 JP 4272982B2 JP 2003430920 A JP2003430920 A JP 2003430920A JP 2003430920 A JP2003430920 A JP 2003430920A JP 4272982 B2 JP4272982 B2 JP 4272982B2
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slider
brake
drive shaft
protrusion
load sheave
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JP2005187154A (en
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俊明 酒井
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株式会社キトー
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本発明は、巻上兼牽引機に関するもので、さらに詳しくは、ロードシーブの回転速度を切替える駆動力切替え手段を備えた巻上兼牽引機に関するものである。   The present invention relates to a hoisting and towing machine, and more particularly to a hoisting and towing machine provided with a driving force switching means for switching the rotational speed of a load sheave.
巻上兼牽引機において、ハンドホイールの駆動力をロードシーブに伝達する動力伝達切替え手段を設けたのは、すでに提案されている。(例えば特許文献1及び特許文献2参照)
特許文献1に記載されたものは、駆動軸の巻き上げ回転方向と逆方向に若干のねじれ角を与えたスプラインを該軸の一部上に刻み、上記ねじれ角により生ずる軸推力によりスプラインに係合し乍ら該軸上を往復移動するピニオンクラッチを備え、このピニオンクラッチと係合する爪クラッチを荷重吊り上げ用環鎖車又は鋼索車の一端に設け、上記ピニオンクラッチを上記爪クラッチに押し付ける為のスプリングをこの爪クラッチと反対側の上記駆動軸の端部に挿入して公知の減速歯車機構と組合せ、斯くて無負荷時に早い速度を、負荷時に低速度を自動的に得るように構成したもので、駆動軸にスプラインが設けられ、ギヤをスプラインに対して移動可能とし、負荷時には、減速ギヤ、ロードギヤを介してロードシーブ(環鎖車)を回転し、無負荷時には、ギヤを移行し、ギヤから直接ロードギヤを駆動することで高速駆動を可能とするものである。
It has already been proposed to provide power transmission switching means for transmitting the driving force of the handwheel to the load sheave in the hoisting and towing machine. (For example, see Patent Document 1 and Patent Document 2)
In Patent Document 1, a spline having a slight torsion angle in the direction opposite to the winding rotation direction of the drive shaft is engraved on a part of the shaft, and the spline is engaged by the axial thrust generated by the torsion angle. A pinion clutch that reciprocates on the shaft is provided, and a pawl clutch that engages with the pinion clutch is provided at one end of a load lifting wheel or a steel cable, and the pinion clutch is pressed against the pawl clutch. A spring is inserted into the end of the drive shaft on the opposite side of the claw clutch and combined with a known reduction gear mechanism, so that a high speed is automatically obtained when no load is applied and a low speed is automatically obtained when a load is applied. Then, the drive shaft is provided with a spline, the gear can be moved with respect to the spline, and when a load is applied, the load sheave (ring wheel) is rotated via the reduction gear and the load gear, When the load is shifted gear, it is intended to enable high-speed driving by driving the Rodogiya directly from the gear.
特許文献2に記載されたものは、ハンドチェーンによって回転するハンドホイールと、該ハンドホイールの回転に連動してロードチェーンを巻上げ・巻下げするロードシーブとを備えた手動式チェーンブロックに於て、上記ハンドホイールに対するロードシーブの通常回転比を増加させるように切替え可能な回転比切替手段を具備し、回転比切替え手段は、増速ギヤ群と切替え操作部から成り、該切替え操作部が、ハンドホイールに連結された入力軸と同一軸心廻りに回転自在に配設されてブレーキ部の圧接板に回転力を伝達する回転力伝達軸と、該回転力伝達軸に一体回転可能にかつ軸方向スライド可能に設けられたスライド部材と、該スライド部材を軸方向にスライドさせる揺動操作機構とを有し、上記増速ギヤが、上記入力軸に一体状に設けられた第1ギヤと、該第1ギヤに噛合する第2ギヤと、該第2ギヤと一体回転可能に設けられた第3ギヤと、上記スライド部材に一体状にかつ上記第3ギヤに噛合・離脱可能に設けられた第4ギヤとを有し、上記揺動操作機構にてスライド部材を第3ギヤ側へスライドさせた大回転比切替状態に於て、上記第3ギヤと第4ギヤとを噛合させ、揺動操作機構にてスライド部材を第1ギヤ側にスライドさせた通常回転比切替え状態に於て、第4ギヤを第3ギヤから離脱させ、かつスライド部材を第1ギヤと一体回転させるように構成したもので、無負荷時には、ハンドホイールから入力軸を回転し、第1ギヤで増速し、第3ギヤから第4ギヤを回転し、スライド部材が回転し、圧接板、ブレーキ部出力軸、減速ギヤを介してロードシーブを回転し、負荷時には、揺動板を操作してスライド部材を第1ギヤ側に移動し、第4ギヤと第3ギヤの噛合を解除して、第1ギヤの回転を第4ギヤに直接伝達し、回転力伝達軸を介してロードシーブを減速駆動するものである。
実公昭46−19539号公報(2頁、図2) 特開2000−86168号公報(3〜4頁、図1、図7)
Patent Document 2 describes a manual chain block including a hand wheel that is rotated by a hand chain, and a load sheave that winds and lowers the load chain in conjunction with the rotation of the hand wheel. A rotation ratio switching means that can be switched to increase the normal rotation ratio of the load sheave relative to the handwheel is provided. The rotation ratio switching means includes a speed increasing gear group and a switching operation section, and the switching operation section A rotational force transmission shaft that is rotatably arranged around the same axis as the input shaft connected to the wheel and transmits rotational force to the pressure contact plate of the brake part, and can be rotated integrally with the rotational force transmission shaft and in the axial direction A sliding member provided so as to be slidable; and a swing operation mechanism that slides the sliding member in the axial direction. The speed increasing gear is integrated with the input shaft. A first gear provided, a second gear meshing with the first gear, a third gear provided to rotate integrally with the second gear, the slide member and the third gear. The third gear and the fourth gear in a large rotation ratio switching state in which the sliding member is slid to the third gear side by the swing operation mechanism. In the normal rotation ratio switching state in which the slide member is slid to the first gear side by the swing operation mechanism, the fourth gear is disengaged from the third gear, and the slide member is moved to the first gear. It is configured to rotate integrally. When there is no load, the input shaft is rotated from the handwheel, the speed is increased by the first gear, the fourth gear is rotated from the third gear, the slide member is rotated, and the pressure contact plate , Load sheave via brake unit output shaft and reduction gear At the time of load, the swing member is operated to move the slide member to the first gear side, the meshing of the fourth gear and the third gear is released, and the rotation of the first gear is directly transmitted to the fourth gear. Then, the load sheave is driven to decelerate via the rotational force transmission shaft.
Japanese Utility Model Publication No. 46-19539 (2 pages, Fig. 2) JP 2000-86168 A (pages 3 to 4, FIGS. 1 and 7)
しかし、前記した特許文献1に記載された装置では、ギヤ自体が動力切替え部材であり、ギヤをスプラインに嵌挿して移動可能としているため、ギヤの直径方向の寸法が大きくなり、減速機の小型化の障害となっていた。また、ギヤの噛み合がスムースに行えない場合には、切替え時に障害が発生するという課題を有していた。   However, in the device described in Patent Document 1 described above, the gear itself is a power switching member and can be moved by inserting the gear into a spline. It has become an obstacle to conversion. Further, when the meshing of the gears cannot be performed smoothly, there is a problem that a failure occurs at the time of switching.
また、特許文献2に記載された装置では、増速駆動軸に、ハンドホイールの回転を第1ギヤ等で増速し、さらに減速ギヤを介してロードシーブを増速駆動するというもので、動力伝達機構が複雑となり、また、切替え時における動作が多岐に亘るため、切替え動作をスムースに行うことができず、また、上記した複雑な構造のものであるため、装置を大型せざるを得ないという課題を有していた。   In the device described in Patent Document 2, the speed of the handwheel is increased by the first gear or the like on the speed increasing drive shaft, and the load sheave is driven at a higher speed via the speed reducing gear. Since the transmission mechanism is complicated and the operation at the time of switching is diverse, the switching operation cannot be performed smoothly, and the apparatus is unavoidably large because of the complicated structure described above. It had the problem that.
上記課題を解決するため、本発明の請求項1に係る発明は、減速機構と連係し、ロードシーブを駆動する駆動軸と、駆動軸に外装されたブレーキウケと、ハンドホイールからの駆動力をブレーキウケを介して駆動軸に伝達する駆動部材を備えた巻上兼牽引機において、ロードシーブのブレーキ側に、ハンドホイールからの駆動力を駆動軸に伝達する駆動力減速伝達系と、ブレーキウケと、駆動軸間に介装され、内側に駆動軸と係合する係合部と、端部にロードシーブと係合する突起部を備えたスライド部材から構成され、ハンドホイールからの駆動力を駆動軸を介さずにロードシーブに伝達する駆動力高速伝達系の切替えを行う駆動力切替え手段を設けたことを特徴とする巻上兼牽引機である。 In order to solve the above-mentioned problem, the invention according to claim 1 of the present invention relates to a driving shaft that drives a load sheave, a brake hook that is externally mounted on the driving shaft, and a driving force from a handwheel. In a hoisting and traction machine having a drive member that transmits to a drive shaft via a brake hook, a drive force deceleration transmission system that transmits a drive force from a handwheel to the drive shaft on the brake side of the load sheave, And a slide member having an engagement portion that is interposed between the drive shafts and engages with the drive shaft on the inside, and a projection portion that engages with the load sheave at the end portion, A hoisting and pulling machine comprising a driving force switching means for switching a driving force high-speed transmission system that transmits to a load sheave without passing through a driving shaft .
また、請求項に係る発明は、スライド部材は、動力伝達部と空転部を備えた駆動軸に嵌装され、軸方向にスライドし、駆動力の切替えを行うことを特徴とするもので、また、請求項に係る発明は、スライド部材は、端部が駆動軸に回転可能に取着され、他端が操作ニギリに嵌合された規制部材により、スライド位置が規制されることを特徴とするものである。また、請求項に係る発明は、上記した各発明において、ロードシーブのブレーキ側に、駆動力切替え手段の一端が嵌挿される筒状の突出部を設けたことを特徴とするものであり、請求項に係る発明は、ブレーキウケをブレーキ側フレーム端部と当接させ、軸方向の移動規制を行うことを特徴とするものである。 The invention according to claim 2 is characterized in that the slide member is fitted to a drive shaft including a power transmission portion and an idling portion, slides in the axial direction, and switches the drive force. Further, the invention according to claim 3 is characterized in that the slide position of the slide member is regulated by a regulating member whose end is rotatably attached to the drive shaft and the other end is fitted to the operation bar. It is what. The invention according to claim 4 is characterized in that, in each of the above-described inventions, a cylindrical projecting portion into which one end of the driving force switching means is fitted is provided on the brake side of the load sheave. The invention according to claim 5 is characterized in that the brake hook is brought into contact with the end portion of the brake side frame to restrict the movement in the axial direction.
本発明の巻上兼牽引機は、スライダ等から形成される動力伝達切替え手段をブレーキ側に設け、該動力伝達切替え手段により、ハンドホイールからの駆動力を、減速装置と連係する駆動軸を介してロードシーブを駆動する動力伝達系と、スライダから直接ロードシーブに駆動力を伝達する動力伝達系の切替えを、スライダを移動させるという簡単な動作で確実かつスムースに行うことが可能となるとともに、装置を大型化することなく巻上げ速度を任意に変更できる速度変更装置や遊転機構を設置することもできる巻上兼牽引機を提供でき、また、上記した動力伝達切替え装置の主部材であるスライダは、ブレーキウケと駆動軸間に介装され、内側で駆動軸と係合し、他端には、ロードシーブのブレーキ側に設けた突出部の突起と係合する突起部を備えたものであり、スライダはブレーキウケと駆動軸間に介装されているため、径方向の大きさを拡大することなく、従来装置と略同等の大きさでスライダを装設できるため、従来装置に比べて大幅に小型化が可能となる。   The hoisting and pulling machine of the present invention is provided with a power transmission switching means formed of a slider or the like on the brake side, and the power transmission switching means causes the driving force from the handwheel to be transmitted via a drive shaft linked to the speed reducer. Switching between the power transmission system that drives the load sheave and the power transmission system that transmits the driving force directly from the slider to the load sheave can be performed reliably and smoothly with a simple operation of moving the slider. A speed change device capable of arbitrarily changing the hoisting speed without increasing the size of the device, and a hoisting and pulling machine capable of installing a free-wheeling mechanism can be provided, and a slider which is a main member of the power transmission switching device described above Is interposed between the brake hook and the drive shaft, engages with the drive shaft on the inside, and protrudes at the other end with a protrusion of a protrusion provided on the brake side of the load sheave. Since the slider is interposed between the brake spacer and the drive shaft, the slider can be installed with a size substantially the same as that of the conventional device without increasing the size in the radial direction. Thus, the size can be greatly reduced as compared with the conventional apparatus.
さらに、また、ロードシーブのブレーキ側には、駆動力切替え手段であるスライダの一端が嵌挿する筒状の突出部を設けたことで、ロードシーブの内側に駆動力切替え手段であるスライダが嵌合するためのスペースを設けることができるため、スライダの嵌入が容易で、かつ、動力伝達の切替えが容易となるとともに、従来装置に比して小型化が可能となり、さらに、また、ブレーキウケの受圧部は、フレーム本体のブレーキ側フレーム端部と係合するようにしたため、ブレーキウケの内側にスライダを内在させることができ、装置の小型化と動力伝達が容易な巻上兼牽引機を提供できる。   In addition, a cylindrical projecting portion into which one end of the slider serving as the driving force switching means is fitted is provided on the brake side of the load sheave so that the slider serving as the driving force switching means is fitted inside the load sheave. Since a space for joining can be provided, it is easy to insert the slider, and the power transmission can be easily switched, and the size can be reduced as compared with the conventional device. Since the pressure receiving part engages with the brake side frame end of the frame body, a slider can be built inside the brake hook, providing a hoisting and pulling machine that can downsize the device and easily transmit power it can.
また、遊転手段をスライダに対して長さ方向及び回転方向に移動可能な規制部材を介して係着し、規制部材を介して正確かつ容易に遊転状態とすることができるため、チェーン長さを自由に調整することができる。   Further, since the loosening means can be engaged with the slider via a restricting member that can move in the length direction and the rotational direction, and the idle state can be accurately and easily made free via the restricting member. The height can be adjusted freely.
以下、本発明の実施の形態について説明する。   Embodiments of the present invention will be described below.
以下、本発明の実施の形態1の巻上兼牽引機について、図1〜6を参照しながら説明する。図1は実施の形態1の巻上兼牽引機の正面断面図、図2は図1における負荷時減速動作時を示す部分断面図、図3は図1のA−A断面図で、(a)は高速動作時、(b)は減速動作時を示す断面図、図4はB−B断面図、図5はC−C断面図、図6はD−D断面図、図7は遊転ニギリ部を示し、(a)は正面図、(b)は断面図、図8はスライダを示し、(a)は正面図、(b)はA−A断面図、(c)はB−B断面図、図9は規制部材を示し、(a)は正面図、(b)は側面図である。図において、1は回転可能に軸支されたロードシーブ、1aはロードシーブのブレーキ側突出部に設けた凹部、1bは同じくブレーキ側突出部の凹部内面に設けた突起、1cは該ブレーキ側突出部、2は駆動軸、2aはセレーション部、2bは空転部、3は減速歯車、4はブレーキウケで、端面が本体フレームに当接し、軸方向の移動が規制されている。5はブレーキウケ4と駆動軸2間に介装され、ロードシーブ側に突出する突起部5aと、内側に駆動軸2のセレーション部2aと係合するセレーション部5bと、先端に設けられ操作ニギリ6の突起6aと係合する突起部5cを備えたスライダである。5dはスライダ5の凹部、5eはスライダ5のフランジ、5fは操作ニギリ6の突起6aと当接するスライド面である。6は操作ニギリ、6aは操作ニギリ6の内側に設けた突起、6bは規制部材の端部の突部が嵌挿される嵌合溝、6cは抜け止め体が嵌合する係止溝、7はワンウエイクラッチ板、8はワンウエイクラッチローラ、9はブレーキ板、10は駆動部材、10aは駆動部材のメネジ部、11はベルト、12はハンドホイール、12aは嵌合部、13は上フック、14は本体フレーム、14aはブレーキ側フレーム、14bは減速機側フレーム、14cは連結フレーム、15aはブレーキ側カバー、15bは減速機側カバー、16はカバー嵌合部、17はフレームの肉厚部、18はブレーキウケ軸受孔、18aはブレーキウケカバー部、19はワンウエイローラ接合孔、20はローラ支持リング係止溝、21は規制部材、21aはスライダの第1突起23a、第2突起23b、段部23cと当接、係合し、図9に示す非円形形状の底面を有する規制部材の底部、22は抜け止め体、23aはスライダ5の内側に設けられた第1突起、23bは同じく第2突起、23cは同じく段部、24はネジリバネ、25は圧縮バネ、26はネジである。本体フレーム図1に示すように、ブレーキ側フレーム14aと減速機側フレーム14bと両者を連結結合する連結フレーム14cを備え、フレーム14a、14bはそれぞれ張出部を有し、その外周端縁部にブレーキ側カバー15aと減速機側カバー15bが嵌合するカバー嵌合部16を備える。ブレーキ側フレーム14aは、ロードシーブ1の軸受部から外方に延出する肉厚部17を備え、該肉厚部17には外側に向かって順次ブレーキウケ軸受孔18、ブレーキウケカバー部18a、ワンウエイクラッチローラ接合孔19及びローラ支持リング係止溝20が設けられる。前記肉厚部17は、成形時における溶湯の湯流れ部(導入部)であり、ブレーキウケカバー部を肉厚部とすることによって成形時において、溶湯が肉厚部17からブレーキ側フレーム14aには直接、減速機側フレーム14bには連結フレーム14cを経由して流れて成形されるため、両フレーム14a、14b及び連結フレーム14cを所望の厚さに成形できる。本実施の形態では、上記の通り、肉厚部をフレーム14aのブレーキウケカバー部に設けることで、溶湯の湯流れをスムーズにし、フレーム14a、14b全体の薄肉化が可能となるとともに、成形時における鋳込み時間を短縮でき、組織の均質化とともに製品強度を向上することが可能となる。   Hereinafter, the hoisting and pulling machine according to the first embodiment of the present invention will be described with reference to FIGS. 1 is a front cross-sectional view of the hoisting and traction machine of the first embodiment, FIG. 2 is a partial cross-sectional view showing a deceleration operation under load in FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA in FIG. ) Is a high speed operation, (b) is a cross-sectional view showing a deceleration operation, FIG. 4 is a BB cross-sectional view, FIG. 5 is a CC cross-sectional view, FIG. 6 is a DD cross-sectional view, and FIG. FIG. 8A is a front view, FIG. 8B is a cross-sectional view, FIG. 8 shows a slider, FIG. 8A is a front view, FIG. 8B is a cross-sectional view along AA, and FIG. FIG. 9 is a sectional view, FIG. 9 shows a regulating member, (a) is a front view, and (b) is a side view. In the figure, 1 is a load sheave that is rotatably supported, 1a is a recess provided in the brake side protrusion of the load sheave, 1b is a protrusion provided on the inner surface of the recess of the brake side protrusion, and 1c is the brake side protrusion. , 2 is a drive shaft, 2a is a serration portion, 2b is an idling portion, 3 is a reduction gear, 4 is a brake pocket, and the end surface is in contact with the main body frame, and movement in the axial direction is restricted. 5 is interposed between the brake spacer 4 and the drive shaft 2, and has a protrusion 5 a that protrudes toward the load sheave, a serration portion 5 b that engages with the serration portion 2 a of the drive shaft 2 on the inside, and an operation margin provided at the tip. 6 is a slider provided with a protrusion 5c that engages with the protrusion 6a. 5 d is a recess of the slider 5, 5 e is a flange of the slider 5, and 5 f is a slide surface that comes into contact with the projection 6 a of the operation limit 6. 6 is an operation limit, 6a is a protrusion provided inside the operation limit 6, 6b is a fitting groove into which a protrusion at the end of the regulating member is inserted, 6c is a locking groove into which a retaining member is fitted, and 7 is One-way clutch plate, 8 is a one-way clutch roller, 9 is a brake plate, 10 is a drive member, 10a is a female screw portion of the drive member, 11 is a belt, 12 is a handwheel, 12a is a fitting portion, 13 is an upper hook, and 14 is Main body frame, 14a is a brake side frame, 14b is a reducer side frame, 14c is a connecting frame, 15a is a brake side cover, 15b is a reducer side cover, 16 is a cover fitting part, 17 is a thick part of the frame, 18 Is a brake spacer cover hole, 19 is a one-way roller joint hole, 20 is a roller support ring locking groove, 21 is a regulating member, and 21a is a first protrusion of the slider. 3a, the second protrusion 23b, and the step 23c are in contact with and engaged with each other. The bottom of the regulating member having a non-circular bottom shown in FIG. 9 is provided, 22 is a retaining member, and 23a is provided inside the slider 5. Similarly, the first protrusion 23b is a second protrusion 23c is a stepped portion 24, a torsion spring 24, a compression spring 25, and a screw 26. As shown in FIG. 1, a brake side frame 14a and a reducer side frame 14b and a connecting frame 14c for connecting and coupling both are provided. Each of the frames 14a and 14b has an overhanging portion, and an outer peripheral edge thereof The cover fitting part 16 with which the brake side cover 15a and the reduction gear side cover 15b are fitted is provided. The brake side frame 14a is provided with a thick portion 17 extending outward from the bearing portion of the load sheave 1, and the thick portion 17 sequentially has a brake pocket bearing hole 18, a brake pocket cover section 18a, A one-way clutch roller joint hole 19 and a roller support ring locking groove 20 are provided. The thick portion 17 is a molten metal flow portion (introduction portion) at the time of molding. By forming the brake cover cover portion as a thick portion, the molten metal is transferred from the thick portion 17 to the brake side frame 14a at the time of molding. Is directly formed on the reduction gear side frame 14b via the connecting frame 14c, so that both the frames 14a, 14b and the connecting frame 14c can be formed to a desired thickness. In the present embodiment, as described above, by providing the thick portion in the brake pocket cover portion of the frame 14a, the molten metal flow can be made smooth, and the entire frame 14a, 14b can be thinned. The casting time can be shortened, and the product strength can be improved with the homogenization of the structure.
巻上兼牽引機の駆動、制動部分は、ハンドホイール12に連結した駆動部材10、ブレーキウケ4、ワンウエイクラッチ板7、ワンウエイクラッチローラ8、ブレーキ板9によって、いわゆるメカニカルブレーキを構成している。ワンウエイクラッチ機構を図示しないラチェットホイール(爪車)と係止爪からなる最も一般的なメカニカルブレーキの構成としても良いが、上記に示す構成が小型でブレーキウケカバー部内にワンウエイクラッチ機構を収納することが可能で、好ましい形態である。通常動作時には、ハンドホイール12の回転駆動力は、駆動部材10、ブレーキウケ4、スライダ5を介して駆動軸2に伝達され、さらに、駆動軸2から減速歯車3を含む減速機構を介してロードシーブ1に伝達される。ブレーキウケ4とスライダ5は、図5に示すように回転力を伝達可能に結合されており、スライダ5は、駆動軸2に対して軸方向に所定範囲でスライド可能に嵌挿されている。図4に示すように、ハンドホイール12の内側には、非円型の嵌合部12aが設けられており、該嵌合部12aに駆動部材10が動力伝達可能に嵌合している。さらに、駆動部材10の内側にはメネジ10aが螺設されており、該メネジ10aはブレーキウケ4の外周に設けたネジと螺合している。ブレーキウケ4の外周には、ブレーキ板9が同軸上に回転可能に備えられ、ブレーキ板9は、ブレーキウケ4の一端に形成された受圧部4aと駆動部材10間に一対に設けられており、ブレーキウケ4に対しては回転可能に設けられている。また、ブレーキ板9、9間には同様にブレーキウケ4の外周に同軸上で回転可能に備えられたワンウエイクラッチ板7とクラッチ板7の凹部7aに備えられローラバネ8aによってワンウエイクラッチローラ接合孔19と内接するワンウエイクラッチローラ8が設けられている。   The drive / brake portion of the hoisting and traction machine constitutes a so-called mechanical brake by the drive member 10 connected to the handwheel 12, the brake spacer 4, the one-way clutch plate 7, the one-way clutch roller 8, and the brake plate 9. The one-way clutch mechanism may be configured as the most general mechanical brake including a ratchet wheel (claw wheel) and a locking claw (not shown), but the above-described configuration is small and the one-way clutch mechanism is accommodated in the brake pocket cover. This is a preferred form. During normal operation, the rotational driving force of the handwheel 12 is transmitted to the drive shaft 2 via the drive member 10, the brake spacer 4, and the slider 5, and further loaded from the drive shaft 2 via the speed reduction mechanism including the reduction gear 3. It is transmitted to the sheave 1. As shown in FIG. 5, the brake spacer 4 and the slider 5 are coupled so as to be able to transmit a rotational force, and the slider 5 is fitted to the drive shaft 2 so as to be slidable within a predetermined range in the axial direction. As shown in FIG. 4, a non-circular fitting portion 12a is provided inside the handwheel 12, and the driving member 10 is fitted to the fitting portion 12a so that power can be transmitted. Further, a female screw 10 a is screwed inside the driving member 10, and the female screw 10 a is screwed with a screw provided on the outer periphery of the brake pocket 4. A brake plate 9 is provided on the outer periphery of the brake wall 4 so as to be coaxially rotatable. The brake plates 9 are provided between the pressure receiving portion 4 a formed at one end of the brake wall 4 and the drive member 10 as a pair. The brake pocket 4 is rotatably provided. Similarly, a one-way clutch roller joint hole 19 is provided between the brake plates 9 and 9 in a recess 7a of the clutch plate 7 and a recess 7a of the clutch plate 7 that is provided coaxially on the outer periphery of the brake pocket 4. And a one-way clutch roller 8 inscribed therein.
また、前記したように、ブレーキウケ4の内側は、スライダ5と回転伝達可能で、かつ軸方向にスライド可能に凹凸嵌合しており、また、図6に示すように、スライダ5のロードシーブ側端部には、ロードシーブ1のブレーキ側に突出する筒状の突出部1cの凹部1aの内面に設けた突起1bと当接し、ハンドホイール12の回転軸動力をロードシーブ1に伝達する突起部5aが設けられている。該突起部5aは、ロードシーブ1の突出部1cの凹部1aに対して軸方向にスライドし、突起1bと係合、非係合の状態に切替えが可能である。また、図2に示すように、スライダ5の内側にはセレーション5bが設けられており、該セレーション5bは、駆動軸2の外側に設けたセレーション部2aとスライド可能に嵌合している。スライダ5は駆動軸2のセレーション部2aとセレーション部2aより小径の空転部2b間で軸方向にスライドし、突起部5aが突起1bと完全に係合するまでスライダ5をスライダさせると、セレーション5bは空転部2bへ移動し、セレーション部2aとの係合は解除される。このようにスライダ5の端部をロードシーブの筒状突出部1cに嵌挿することで、高速伝達系への切替え動作が容易となる。また、図3(a)(b)に示すように、スライダ5の他端には、操作ニギリ6の内側端面から軸方向に突出した突起6aと当接する突起部5cが設けられたフランジ5eが形成されており、該突起部5cの両側には、前記突起6aが嵌入する凹部5dが設けられている。操作ニギリ6は、図1、図2に示すように、スライダ5のフランジ5eに抜止め部材22によって回転可能に取着されており、前記突起5cと突起6aによって回転可能範囲が規制されている。21aは規制部材21の底部で、後記するスライダの第1突起23a、第2突起23b、段部23cと当接、係合し、スライダの軸方向位置を規制する底部を有する。操作ニギリ6は、フランジ5eを収納する突部内周部に設けた係止溝6cに嵌合し、スライダ5の端部フランジ5eに当接するように設けた抜け止め部材22により、スライダ5に係着され、操作ニギリ6は、前記抜け止め部材22で軸方向の移動を規制される。   Further, as described above, the inside of the brake spacer 4 is concavo-convexly fitted so as to be able to transmit rotation with the slider 5 and to slide in the axial direction, and as shown in FIG. The side end portion is in contact with a protrusion 1b provided on the inner surface of the concave portion 1a of the cylindrical protruding portion 1c protruding toward the brake side of the load sheave 1, and transmits the rotational shaft power of the hand wheel 12 to the load sheave 1. A portion 5a is provided. The protrusion 5a slides in the axial direction with respect to the recess 1a of the protrusion 1c of the load sheave 1, and can be switched between an engaged state and a disengaged state with the protrusion 1b. As shown in FIG. 2, a serration 5 b is provided inside the slider 5, and the serration 5 b is slidably fitted to a serration portion 2 a provided outside the drive shaft 2. The slider 5 slides in the axial direction between the serration portion 2a of the drive shaft 2 and the idling portion 2b having a smaller diameter than the serration portion 2a. When the slider 5 is slid until the projection 5a is completely engaged with the projection 1b, the serration 5b Moves to the idling portion 2b, and the engagement with the serration portion 2a is released. Thus, the switching operation to the high-speed transmission system is facilitated by inserting the end portion of the slider 5 into the cylindrical projecting portion 1c of the load sheave. As shown in FIGS. 3A and 3B, the other end of the slider 5 has a flange 5e provided with a protrusion 5c that abuts the protrusion 6a that protrudes in the axial direction from the inner end surface of the operation end 6. A recess 5d into which the protrusion 6a is fitted is provided on both sides of the protrusion 5c. As shown in FIGS. 1 and 2, the operation limit 6 is rotatably attached to the flange 5e of the slider 5 by a retaining member 22, and the rotatable range is restricted by the protrusion 5c and the protrusion 6a. . Reference numeral 21a denotes a bottom portion of the regulating member 21, which has a bottom portion that abuts and engages with a first projection 23a, a second projection 23b, and a step portion 23c of the slider, which will be described later, and regulates the axial position of the slider. The operation limit 6 is engaged with the slider 5 by a retaining member 22 that is fitted in a locking groove 6c provided in the inner peripheral portion of the protrusion that houses the flange 5e and is provided so as to contact the end flange 5e of the slider 5. The operation limit 6 is restricted from moving in the axial direction by the retaining member 22.
また、図8、図9に示すように、スライダ5の操作ニギリ側の内周には、規制部材21の底部を収納する凹部を有し、この凹部内周には規制部材21の底部とスライダ5の軸方向の位置を規制する突起部が設けられている。突起部は、遊転ニギリ6側の端面から凹部底まで延びる第1突起23aと、該第1突起23aと、深さの異なる第2突起23bからなり、規制部材21は、その底部21aが第1突起23aまたは第2突起23bに当接、係合して、スライダ5の軸方向の位置及びスライダ5の規制部材21に対する回転範囲を規制する。また、操作ニギリ6及び規制部材21は、スライダ5の突起部5c間に設けたスライド面5fで規制される円周方向のストロークの範囲で円周方向に移動可能である。また、スライダ5と規制部材21は、一端がスライダ5の突起5c端面に、他端が規制部材21に係着されるネジリバネ24で連係しており、さらに、規制部材21と操作ニギリ6は、一端が規制部材21の基部21aに係着され、他端が操作ニギリ6の内側端面と係着する圧縮バネ25によって連係しており、ネジリバネ24により、規制部材21を、スライダ5に対して図3紙面上において反時計方向に回転付勢力を付与し、圧縮バネ25によりスライダ5に操作ニギリ6を介して、軸方向の付勢力を付与している。図2に示す状態は、規制部材21の底部21aがスライダ5の第1突起23aと第2突起23bとに狭持係合し、段部23cと当接している状態であり、スライダ5は圧縮バネ25により操作ニギリ6側(本体外側)にスライドし、セレーション部5dは駆動軸2のセレーション部2aと係合し、スライダ5から駆動軸2に駆動力を伝達する、また、図1に示すスライダ5をロードシーブ側に操作ニギリ6を介して押し込む操作を行うと、規制部材21の底部21aは、第2突起23bによる回転規制から開放されネジリバネ24の回転付勢力により、一方から他方の第1突起23aに当接するまで回転する。この状態で操作ニギリ6から手を放しても、底部21aは第2突起23bに乗り上げているので、圧縮バネ25に抗してこの状態が維持される。その結果スライダ5は駆動部材2の空転部2bの位置で固定され、駆動部材2とは係合しない。上記した、セレーション部2aと空転部2bを有する駆動軸2、スライダ5、スライダ5の位置を規制する規制部材21、及び規制部材21を操作する操作ニギリ6は、動力伝達切替え装置を形成する。   As shown in FIGS. 8 and 9, the inner periphery of the slider 5 on the operation side has a recess for accommodating the bottom portion of the regulating member 21, and the bottom portion of the regulating member 21 and the slider are disposed on the inner periphery of the recess. 5 is provided with a protrusion for restricting the position in the axial direction. The protrusion is composed of a first protrusion 23a extending from the end face on the side of the loose end 6 to the bottom of the recess, the first protrusion 23a, and a second protrusion 23b having a different depth. The first protrusion 23a or the second protrusion 23b is contacted and engaged to restrict the axial position of the slider 5 and the rotation range of the slider 5 relative to the restricting member 21. Further, the operation limit 6 and the regulating member 21 are movable in the circumferential direction within the range of the stroke in the circumferential direction regulated by the slide surface 5 f provided between the protrusions 5 c of the slider 5. Further, the slider 5 and the regulating member 21 are linked to each other by a torsion spring 24 whose one end is engaged with the projection 5c end surface of the slider 5 and the other end is engaged with the regulating member 21. One end is engaged with the base portion 21a of the restricting member 21, and the other end is linked with a compression spring 25 engaged with the inner end face of the operation end 6. The restricting member 21 is connected to the slider 5 by the torsion spring 24. A rotational urging force is applied in the counterclockwise direction on three sheets of paper, and an urging force in the axial direction is applied to the slider 5 by the compression spring 25 via the operation limit 6. The state shown in FIG. 2 is a state in which the bottom portion 21a of the regulating member 21 is nipped and engaged with the first protrusion 23a and the second protrusion 23b of the slider 5 and is in contact with the step portion 23c. The slider 25 is slid to the operation end 6 side (outside the main body) by the spring 25, and the serration portion 5d engages with the serration portion 2a of the drive shaft 2 to transmit the driving force from the slider 5 to the drive shaft 2, as shown in FIG. When the slider 5 is pushed into the load sheave side through the operation limit 6, the bottom 21a of the restricting member 21 is released from the rotation restriction by the second protrusion 23b, and the rotational biasing force of the torsion spring 24 causes the first one to the other. It rotates until it contacts one protrusion 23a. Even if the operation finger 6 is released in this state, the bottom portion 21a rides on the second protrusion 23b, so that this state is maintained against the compression spring 25. As a result, the slider 5 is fixed at the position of the idling portion 2 b of the driving member 2 and does not engage with the driving member 2. The drive shaft 2 having the serration portion 2a and the idling portion 2b, the slider 5, the restriction member 21 for restricting the position of the slider 5, and the operation limit 6 for operating the restriction member 21 form a power transmission switching device.
次に、本実施の形態による駆動力切替え動作について説明する。通常操作時(操作ニギリ6が図2の状態)において、スライダ5は圧縮バネ25により遊転ニギリ6側に押され、スライダ5のセレーション部5bは駆動軸2のセレーション部2aと係合し、ハンドホイール12の回転は、駆動部材10、ブレーキウケ4、スライダ5を介して駆動軸2にのみ伝達され、駆動軸2から減速歯車3を含む減速機構を介して、ロードシーブ1に伝達され、ロードシーブ1を減速駆動する。   Next, the driving force switching operation according to the present embodiment will be described. During normal operation (when the operation force 6 is in the state shown in FIG. 2), the slider 5 is pushed toward the idle rotation 6 by the compression spring 25, and the serration portion 5b of the slider 5 engages with the serration portion 2a of the drive shaft 2. The rotation of the handwheel 12 is transmitted only to the drive shaft 2 through the drive member 10, the brake spacer 4, and the slider 5, and is transmitted from the drive shaft 2 to the load sheave 1 through the speed reduction mechanism including the reduction gear 3. Drives the load sheave 1 at a reduced speed.
次に、無負荷時に高速操作への切換は、遊転ニギリ6を軸方向に押圧すると前述の通り、スライダ5はロードシーブ1の軸方向に押動されると同時に、ネジリバネ24により規制部材21は所定ストローク回転し、スライダ5の軸方向の位置が固定される。スライダ5は駆動軸2の空転部2bに移動し、セレーション部2aとの係合が解除され、スライダ5を介して駆動軸2への駆動力の伝達を中断する。   Next, switching to high speed operation when no load is applied is as follows. When the idle gear 6 is pressed in the axial direction, the slider 5 is pushed in the axial direction of the load sheave 1 as described above, and at the same time, the regulating member 21 is pressed by the torsion spring 24. Rotates a predetermined stroke, and the position of the slider 5 in the axial direction is fixed. The slider 5 moves to the idling portion 2 b of the drive shaft 2, the engagement with the serration portion 2 a is released, and transmission of the driving force to the drive shaft 2 through the slider 5 is interrupted.
さらに動作を説明する。駆動力高速伝達操作状態から駆動力伝達操作状態への切替は操作ニギリ6をネジリバネ24の回転力に逆らって、操作ニギリ6の内側に設けられた突起6aがスライダ端の突起5cに当接するまで時計方向に回転させると操作ニギリ6のハメアイ溝6bらよって規制部材21の底部21aは、スライダ5の第2突起23bみへの乗り上げから解放され、圧縮バネ25によりスライダを操作ニギリ6側へ押動する。この動作時に、スライダ5は圧縮バネ25により軸方向で操作ニギリ6側に付勢されて押動するため、スライダ5は駆動軸2のセレーション部2aと係合され、スライダを介して駆動軸2への駆動力を伝達する。駆動力減速伝達操作状態から駆動力高速伝達操作状態への切替は操作ニギリ6を軸方向に圧縮バネ25に逆らって押すと規制部材21の底部21aはスライダ5は、規制部材21の底部21aと第2突起23bによる回転規制から開放するまでストロークし、ネジリバネ24により規制部材21は、操作ニギリ6を伴って、反時計方向に回転する。このときの操作ニギリ6の回転は、スライダ5の突起部5cと遊転ニギリ6みの内側に設けられた突起6aが干渉するまで行われると同時に規制部材21はスライダ5の反対の第1突起23aに当接する位置まで回転する。   Further, the operation will be described. Switching from the driving force high-speed transmission operation state to the driving force transmission operation state is performed until the projection 6a provided on the inner side of the operation edge 6 contacts the projection 5c at the slider end against the rotational force of the torsion spring 24. When rotated clockwise, the bottom 21a of the restricting member 21 is released from the ride on the second protrusion 23b of the slider 5 by the helical groove 6b of the operation edge 6, and the slider is pushed toward the operation edge 6 by the compression spring 25. Move. During this operation, the slider 5 is urged toward the operation end 6 in the axial direction by the compression spring 25 and pushed, so that the slider 5 is engaged with the serration portion 2a of the drive shaft 2 and the drive shaft 2 is interposed via the slider. Transmit driving force to. To switch from the driving force deceleration transmission operation state to the driving force high speed transmission operation state, when the operation force 6 is pushed against the compression spring 25 in the axial direction, the bottom portion 21a of the regulating member 21 and the bottom portion 21a of the regulating member 21 are Stroke is performed from the rotation restriction by the second protrusion 23 b until it is released, and the restriction member 21 is rotated counterclockwise by the torsion spring 24 with the operation limit 6. At this time, the operation edge 6 is rotated until the protrusion 5 c provided on the inner side of the protrusion 5 c of the slider 5 interferes with the protrusion 6 a on the inner side of the idle rotation 6. At the same time, the regulating member 21 is the first protrusion opposite to the slider 5. It rotates to the position where it abuts against 23a.
一方、スライダ5はロードシーブ1側に押動されるため、スライダ5のロードシーブ側に設けた突起部5aは、ロードシーブ1の突出部1cの内側に挿嵌され、突出部1cの内側に設けた突起1bと係合可能となり、スライダ5の回転は、スライダ5の突起部5a、ロードシーブ1の突起1bを介し、直接ロードシーブ1を高速で回転する。したがって、ハンドホイール12から駆動部材10、ブレーキウケ4、スライダ5を介して、減速装置を介さずに直接ロードシーブ1を回転するため、ロードシーブ1は高速回転される。   On the other hand, since the slider 5 is pushed toward the load sheave 1, the protrusion 5 a provided on the load sheave side of the slider 5 is inserted inside the protrusion 1 c of the load sheave 1, and inside the protrusion 1 c. The protrusion 5 can be engaged with the provided protrusion 1b, and the rotation of the slider 5 directly rotates the load sheave 1 at a high speed via the protrusion 5a of the slider 5 and the protrusion 1b of the load sheave 1. Therefore, since the load sheave 1 is directly rotated from the handwheel 12 via the drive member 10, the brake spacer 4, and the slider 5 without using the speed reduction device, the load sheave 1 is rotated at a high speed.
図10は動力伝達装置と遊転装置を設けた他の実施の形態で、図10は図1のD−D断面図である。この実施の形態においては、ロードシーブ1の突出部1cには動力を伝達する突起1bを有しない。そのため遊転時においては、スライダ5はロードシーブと係止しない構成、すなわち、遊転状態となる。なお、他の構成は実施の形態1と全く同じであり説明を省略する。   FIG. 10 shows another embodiment in which a power transmission device and an idling device are provided, and FIG. 10 is a cross-sectional view taken along the line DD in FIG. In this embodiment, the protrusion 1c of the load sheave 1 does not have a protrusion 1b for transmitting power. Therefore, at the time of idle rotation, the slider 5 is not locked with the load sheave, that is, in an idle state. Other configurations are exactly the same as those of the first embodiment, and a description thereof is omitted.
上記した本実施の形態においては、スライダ等から形成される動力伝達切替え手段をブレーキ側に設け、該切替え手段による動力伝達切替ええにより、ハンドホイールからの駆動力を減速装置と連係する駆動軸を介してロードシーブを駆動する動力伝達系と、スライダから直接ロードシーブに駆動力を伝達する動力伝達系の切替えを、スライダを移動させるという簡単な動作で確実かつスムースに行うことが可能となるとともに、装置を大型化することなく動力切替え手段、速度変更装置及び遊転機構を設置することもできる巻上兼牽引機を提供できる。   In the above-described embodiment, the power transmission switching means formed of a slider or the like is provided on the brake side, and the drive shaft that links the driving force from the handwheel with the speed reduction device by switching the power transmission by the switching means. Switching between the power transmission system that drives the load sheave and the power transmission system that directly transmits the driving force from the slider to the load sheave can be performed reliably and smoothly with a simple operation of moving the slider. Thus, it is possible to provide a hoisting and pulling machine in which a power switching means, a speed changing device, and an idle rotation mechanism can be installed without increasing the size of the device.
また、上記した動力伝達切替ええ装置の主部材であるスライダは、ブレーキウケと駆動軸間に介装され、内側で駆動軸と係合し、他端には、ロードシーブの突起と係合する突起部を備えたものであり、スライダはブレーキウケと駆動軸間に介装されており、スライダを設けるために径方向の大きさを拡大することなく、従来装置と同等の大きさでスライダを装設できるため、従来装置に比べて大幅に小型化が可能である。   The slider, which is the main member of the power transmission switching device described above, is interposed between the brake spacer and the drive shaft, engages with the drive shaft on the inner side, and engages with the projection of the load sheave at the other end. Protrusions are provided, and the slider is interposed between the brake spacer and the drive shaft. The slider is installed in the same size as the conventional device without increasing the size in the radial direction to provide the slider. Since it can be installed, it can be significantly reduced in size compared with the conventional apparatus.
また、スライダはブレーキウケの内側で、駆動軸に外装され、軸方向にスライドすることにより動力伝達の切替えを行うようにしたため、動力伝達切替え手段を設けるための特別なスペースを必要としせず、装置の小型化が可能となる。   In addition, the slider is externally mounted on the drive shaft inside the brake shaft, and the power transmission is switched by sliding in the axial direction. Therefore, no special space for providing the power transmission switching means is required. The size of the apparatus can be reduced.
さらに、また、ロードシーブのブレーキ側には、駆動力切替え手段の一端を収納する筒状の突起部を設けたことで、ロードシーブの内側に駆動力切替え手段であるスライダが嵌合するためのスペースを設けることができるため、スライダの嵌入が容易で、動力伝達の切替えが容易となるとともに、従来装置に比して小型化が可能となる。さらに、また、ブレーキウケの受圧部は、フレーム本体のブレーキ側フレーム端部と係合しており、従来装置のように駆動軸と係合していないため、ブレーキウケの内側にスライダを内在させることができる装置の小型化と動力伝達が容易な巻上兼牽引機を提供できる。   In addition, a cylindrical projection that houses one end of the driving force switching means is provided on the brake side of the load sheave so that a slider that is the driving force switching means is fitted inside the load sheave. Since the space can be provided, the slider can be easily inserted, the power transmission can be easily switched, and the size can be reduced as compared with the conventional device. Furthermore, the pressure receiving portion of the brake wall is engaged with the brake side frame end of the frame body, and is not engaged with the drive shaft as in the conventional device, so that the slider is made inside the brake wall. It is possible to provide a hoisting and pulling machine that can easily reduce the size of the device and transmit power.
また、さらに、操作ニギリをスライダに対して長さ方向及び回転方向に移動可能な規制部材を介して係着し、規制部材を介して正確かつ容易に遊転状態とすることができるため、チェーン長さを自由に調整することができる。   In addition, since the operation limit can be engaged with the slider via a restricting member that can move in the length direction and the rotational direction, and the free-running state can be accurately and easily made via the restricting member. The length can be adjusted freely.
また、さらに、操作ニギリは規制部材を介してスライダを移動することで、駆動軸、減速歯車機構を介してロードシーブの低速駆動と、スライダが駆動軸の空転部に位置する遊転状態と、スライダがロードシーブと係合し、ロードシーブを高速駆動との切替えを可能とすることができる。   Further, the operation is moved by moving the slider via the regulating member, so that the load sheave is driven at a low speed via the drive shaft and the reduction gear mechanism, and the idle state where the slider is positioned at the idling portion of the drive shaft, The slider engages with the load sheave, and the load sheave can be switched to high-speed driving.
なお、上記した実施の形態においては、スライダ5は空転位置において、スライダ5の先端の突起部5aがロードシーブ1の突起と係合し、スライダ5を介してロードシーブ1を駆動するようにしたが、この形態に限定されずに、スライダ5と駆動軸2が係合する減速伝達位置と、スライダ5がロードシーブ1を直接駆動する高速伝達位置の中間にスライダが完全に空転する空転位置を設けることは当然可能である。   In the above-described embodiment, the slider 5 is configured to drive the load sheave 1 through the slider 5 by engaging the protrusion 5a at the tip of the slider 5 with the protrusion of the load sheave 1 at the idle position. However, the present invention is not limited to this configuration, and the idle position where the slider completely idles between the deceleration transmission position where the slider 5 and the drive shaft 2 are engaged and the high speed transmission position where the slider 5 directly drives the load sheave 1. It is naturally possible to provide them.
実施の形態1の巻上兼牽引機の側面断面図。FIG. 3 is a side cross-sectional view of the hoisting and pulling machine according to the first embodiment. 図1における減速動作時を示す部分断面図。The fragmentary sectional view which shows the time of deceleration operation in FIG. 図1のA−A断面図で、(a)高速動作時、(b)は減速動作時を示す断面図。FIGS. 2A and 2B are cross-sectional views taken along the line A-A in FIG. 1, wherein FIG. B−B断面図。BB sectional drawing. C−C断面図。CC sectional drawing. D−D断面図。DD sectional drawing. 操作ニギリを示し、(a)は正面図、(b)は側面図。FIG. 4A is a front view, and FIG. スライダを示し、(a)は正面図、(b)はA−A断面図、(c)はB−B断面図。A slider is shown, (a) is a front view, (b) is AA sectional drawing, (c) is BB sectional drawing. 規制部材を示し、(a)は正面図、(b)は側面図。A restricting member is shown, (a) is a front view, (b) is a side view. 実施の形態2の巻上兼牽引機のD−D断面図。DD sectional drawing of the winding / traction machine of Embodiment 2. FIG.
符号の説明Explanation of symbols
1 ロードシーブ
1a 凹部
1b 突起
1c 突出部
2 駆動軸
2a セレーション部
2b 空転部
3 減速歯車
4 ブレーキウケ
4a 受圧部
5 スライダ
5a 突起部
5b セレーション
5c 突起部
5d 凹部
5e フランジ
5f スライド面
6 遊転ニギリ
6a 突起
6b 嵌合溝
6c 係止溝
7 ワンウエイクラッチ板
8 ワンウエイクラッチローラ
9 ブレーキ板
10 駆動部材
10a メネジ
11 ベルト
12 ハンドホイール
12a 嵌合部
13 上フック
14 本体フレーム
14a ブレーキ側フレーム
14b 減速機側フレーム
14c 連結フレーム
15a ブレーキ側カバー
15b 減速機側カバー
16 カバー嵌合部
17 肉厚部
18 ブレーキウケ軸受孔
18a ブレーキウケカバー部
19 ワンウエイクラッチローラ接合孔
20 ローラ支持リング係止溝
21 規制部材
21a 底部
22 抜け止め部材
23a 第1突起
23b 第2突起
23c 段部
24 ネジリバネ
25 圧縮バネ
26 ネジ
DESCRIPTION OF SYMBOLS 1 Load sheave 1a Concave part 1b Protrusion 1c Protrusion part 2 Drive shaft 2a Serration part 2b Sliding part 3 Reduction gear 4 Brake unit 4a Pressure receiving part 5 Slider 5a Protrusion part 5b Serration 5c Protrusion part 5d Concave part 5e Flange 5f Sliding face 6 Projection 6b Fitting groove 6c Locking groove 7 One-way clutch plate 8 One-way clutch roller 9 Brake plate 10 Drive member 10a Female screw 11 Belt 12 Handwheel 12a Fitting portion 13 Upper hook 14 Main body frame 14a Brake side frame 14b Reducer side frame 14c Connecting frame 15a Brake side cover 15b Reducer side cover 16 Cover fitting part 17 Thick part 18 Brake pocket bearing hole 18a Brake pocket cover part 19 One-way clutch roller joint hole 20 Roller support Ring engagement groove 21 regulating member 21a bottom 22 retaining member 23a first protrusion 23b second protrusion 23c stepped portion 24 torsion spring 25 compression spring 26 screw

Claims (5)

  1. 減速機構と連係し、ロードシーブを駆動する駆動軸と、駆動軸に外装されたブレーキウケと、ハンドホイールからの駆動力をブレーキウケを介して駆動軸に伝達する駆動部材を備えた巻上兼牽引機において、ロードシーブのブレーキ側に、ハンドホイールからの駆動力を駆動軸に伝達する駆動力減速伝達系と、ブレーキウケと、駆動軸間に介装され、内側に駆動軸と係合する係合部と、端部にロードシーブと係合する突起部を備えたスライド部材から構成され、ハンドホイールからの駆動力を駆動軸を介さずにロードシーブに伝達する駆動力高速伝達系の切替えを行う駆動力切替え手段を設けたことを特徴とする巻上兼牽引機。 A hoisting / winding unit provided with a drive shaft that is linked to the speed reduction mechanism and that drives the load sheave, a brake hook that is externally mounted on the drive shaft, and a drive member that transmits the driving force from the handwheel to the drive shaft via the brake hook. In a traction machine, a drive force deceleration transmission system that transmits the drive force from the handwheel to the drive shaft , a brake spacer, and a drive shaft are interposed between the drive sheave and the inner side of the load sheave. A driving force high-speed transmission system that consists of a sliding member with an engaging part and a protrusion that engages with the load sheave at the end, and that transmits the driving force from the handwheel to the load sheave without going through the drive shaft. A hoisting and pulling machine characterized in that it is provided with a driving force switching means for performing the operation.
  2. スライド部材は、動力伝達部と空転部を備えた駆動軸に嵌装され、軸方向にスライドし、駆動力の切替えを行うことを特徴とする請求項1記載の巻上兼牽引機。The hoisting and pulling machine according to claim 1, wherein the slide member is fitted to a drive shaft including a power transmission unit and an idling unit, and slides in the axial direction to switch the drive force.
  3. スライド部材は、端部が駆動軸に回転可能に取着され、他端が操作ニギリに嵌合された規制部材により、スライド位置が規制されることを特徴とする請求項2記載の巻上兼牽引機。3. The hoisting and rolling device according to claim 2, wherein the sliding position of the slide member is regulated by a regulating member having an end rotatably attached to the drive shaft and the other end fitted to the operation bar. Traction machine.
  4. ロードシーブのブレーキ側に、駆動力切替え手段の一端が嵌挿される筒状の突出部を設けたことを特徴とする請求項1〜3いずれかに記載の巻上兼牽引機。The hoisting and pulling machine according to any one of claims 1 to 3, wherein a cylindrical projecting portion into which one end of the driving force switching means is fitted is provided on the brake side of the load sheave.
  5. ブレーキウケをブレーキ側フレーム端部と当接させ、軸方向の移動規制を行うことを特徴とする請求項1〜4いずれかに記載の巻上兼牽引機。The hoisting and pulling machine according to any one of claims 1 to 4, wherein the brake hook is brought into contact with an end portion of the brake side frame to restrict movement in the axial direction.
JP2003430920A 2003-12-25 2003-12-25 Hoisting and towing machine Active JP4272982B2 (en)

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JP2003430920A JP4272982B2 (en) 2003-12-25 2003-12-25 Hoisting and towing machine

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JP4272982B2 true JP4272982B2 (en) 2009-06-03

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