JPH04272094A - Electric motor driven chain block - Google Patents
Electric motor driven chain blockInfo
- Publication number
- JPH04272094A JPH04272094A JP5015991A JP5015991A JPH04272094A JP H04272094 A JPH04272094 A JP H04272094A JP 5015991 A JP5015991 A JP 5015991A JP 5015991 A JP5015991 A JP 5015991A JP H04272094 A JPH04272094 A JP H04272094A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- cam
- fitted
- chain block
- holding member
- 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
Links
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Gears, Cams (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、歯車減速部にトルクリ
ミッタとメカニカルブレーキとを備えている電動チェー
ンブロックに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric chain hoist having a gear reduction section equipped with a torque limiter and a mechanical brake.
【０００２】0002
【従来の技術】従来、トルクリミッタおよびメカニカル
ブレーキを備えている電動チェーンブロックとしては、
特公平２−４１５１４号公報により公表されている構造
の電動チェーンブロックが知られている。[Prior Art] Conventionally, electric chain hoists equipped with torque limiters and mechanical brakes have
An electric chain hoist having a structure disclosed in Japanese Patent Publication No. 2-41514 is known.
【０００３】0003
【発明が解決しようとする課題】前記従来の電動チェー
ンブロックの場合は、中間軸に、中間駆動歯車とブレー
キ受盤との間において、支承リングを嵌合すると共に、
その支承リングの外側に支承部材を嵌合しているので、
電動チェーンブロックを構成する部品数が多くなって、
組立てが煩雑であると共に組立時間が長くかかり、かつ
電動チェーンブロックの製造コストが高くなるという欠
点がある。[Problems to be Solved by the Invention] In the case of the conventional electric chain hoist, a support ring is fitted to the intermediate shaft between the intermediate drive gear and the brake receiver, and
Since the support member is fitted on the outside of the support ring,
As the number of parts that make up an electric chain hoist increases,
The drawbacks are that assembly is complicated and takes a long time, and the manufacturing cost of the electric chain hoist is high.
【０００４】0004
【課題を解決するための手段】本発明は、前述の欠点を
排除するために、電動機１により回転される駆動軸２と
ロードシーブ３を設けた回転軸４との間に、トルクリミ
ッタおよびメカニカルブレーキを備えている歯車減速機
構が介在され、前記回転軸４に、歯車減速機構における
従動歯車５の内側に設けられたカム保持部材６が嵌設さ
れると共に、そのカム保持部材６の一側部および他側部
に配置された押え盤７およびブレーキ受盤８が摺動自在
にかつ回動不能に嵌設され、ブレーキ用爪片９に係合す
るブレーキ用爪車１０は従動歯車５とブレーキ受盤８と
の間に介在され、前記カム保持部材６の側部に回転軸周
囲方向に沿って深さが変化するカム溝１１が設けられ、
そのカム溝１１にブレーキ弛緩用カム部材１２が嵌入さ
れ、前記回転軸４に押え盤７の押圧力を調節する調節用
ナット１３が螺合されている電動チェーンブロックにお
いて、前記ブレーキ受盤８が、回転軸４のロードシーブ
３側に設けられた大径軸部１４の側面に係合され、前記
押え盤７の外面に、前記調節用ナット１３により押圧さ
れる押え盤押圧用ばね部材１５が配置されている。[Means for Solving the Problems] In order to eliminate the above-mentioned drawbacks, the present invention provides a torque limiter and a mechanical A gear reduction mechanism equipped with a brake is interposed, and a cam holding member 6 provided inside a driven gear 5 in the gear reduction mechanism is fitted onto the rotating shaft 4, and one side of the cam holding member 6 is fitted. A presser plate 7 and a brake receiving plate 8 arranged on one side and the other side are slidably but unrotatably fitted, and a brake pawl 10 that engages with a brake pawl piece 9 is connected to the driven gear 5. A cam groove 11 is provided on the side of the cam holding member 6 and the depth thereof varies along the circumferential direction of the rotation shaft, which is interposed between the cam groove 11 and the brake receiving plate 8;
In the electric chain block, a brake release cam member 12 is fitted into the cam groove 11, and an adjustment nut 13 for adjusting the pressing force of the presser plate 7 is screwed onto the rotating shaft 4. , a presser plate pressing spring member 15 is engaged with a side surface of a large diameter shaft portion 14 provided on the load sheave 3 side of the rotating shaft 4, and is pressed against the outer surface of the presser plate 7 by the adjustment nut 13. It is located.
【０００５】[0005]
【実施例】図１ないし図６は本発明の第１実施例を示す
ものであって、電動機１により回転される駆動軸２に駆
動歯車１６が設けられ、中間軸１７に固定された中間従
動歯車１８は前記駆動歯車１６に噛み合わされ、前記中
間軸１７と平行に配置された回転軸４の一端部に大径軸
部１４が一体に設けられると共に、その大径軸部１４に
ロードシーブ３が形成され、前記中間軸１７に一体に設
けられた中間駆動歯車１９に噛み合う環状の従動歯車５
は、回転軸４と同心的に配置され、かつ従動歯車５の内
側にカム保持部材６の外周部分が相対的に回動しないよ
うに嵌合され、前記カム保持部材６の内側に回動自在に
嵌合された軸受リング２０は、回転軸４に対し摺動自在
にかつ相対的に回動しないように嵌合されている。[Embodiment] FIGS. 1 to 6 show a first embodiment of the present invention, in which a drive gear 16 is provided on a drive shaft 2 rotated by an electric motor 1, and an intermediate driven gear fixed to an intermediate shaft 17. The gear 18 is meshed with the drive gear 16, and a large diameter shaft portion 14 is integrally provided at one end of the rotating shaft 4 arranged parallel to the intermediate shaft 17, and a load sheave 3 is attached to the large diameter shaft portion 14. an annular driven gear 5 that meshes with an intermediate drive gear 19 that is formed integrally with the intermediate shaft 17;
is arranged concentrically with the rotating shaft 4, and is fitted inside the driven gear 5 so that the outer peripheral portion of the cam holding member 6 does not rotate relatively, and is rotatable inside the cam holding member 6. The bearing ring 20 is fitted to the rotary shaft 4 so as to be slidable and not rotate relative to the rotating shaft 4.
【０００６】前記従動歯車５およびカム保持部材６の一
側部および多側部に配置された押え盤７とブレーキ受盤
８とは、回転軸４に対し摺動自在にかつ相対的に回動し
ないように嵌合され、前記ブレーキ受盤８の外面は回転
軸４の大径軸部１４の側面に係合され、押え盤７の外側
において回転軸４に嵌合された押圧リング２１に、押え
盤７を押圧する複数の皿ばねからなる押え盤押圧用ばね
部材１５が嵌合され、前記ブレーキ受盤８の内側に設け
られたボスに、ブレーキ用爪車１０が筒状軸受２２を介
して回動自在に嵌設され、カム保持部材６とブレーキ受
盤８との間にスラストベアリング２３が介在され、押え
盤７と従動歯車５とブレーキ用爪車１０とブレーキ受盤
８との間に摩擦板２４，２５，２６が介在されている。[0006] The presser plate 7 and the brake receiver plate 8, which are arranged on one side and on the other side of the driven gear 5 and the cam holding member 6, are slidable and relatively rotatable with respect to the rotating shaft 4. The outer surface of the brake receiving plate 8 is engaged with the side surface of the large-diameter shaft portion 14 of the rotating shaft 4, and the press ring 21 fitted on the rotating shaft 4 on the outside of the presser plate 7, A presser plate pressing spring member 15 consisting of a plurality of disc springs that presses the presser plate 7 is fitted, and a brake pawl 10 is mounted on a boss provided inside the brake receiver plate 8 via a cylindrical bearing 22. A thrust bearing 23 is interposed between the cam holding member 6 and the brake receiving plate 8, and a thrust bearing 23 is interposed between the holding plate 7, the driven gear 5, the brake pawl 10, and the brake receiving plate 8. Friction plates 24, 25, and 26 are interposed therein.
【０００７】前記カム保持部材６における押え盤７に対
向する側に、回転軸４と同心的に配置された複数の円弧
状のカム溝１１が設けられ、そのカム溝１１に鋼球から
なるブレーキ弛緩用カム部材１２が嵌入され、前記押え
盤７に、カム保持部材６から突出したカム部材１２の突
出部を嵌入させる円弧状断面の円環状溝２７が設けられ
、前記摩擦板２４，２５は従動歯車５の側面に固定され
、前記摩擦板２６は爪車１０の側面に固定されている。A plurality of arc-shaped cam grooves 11 are provided on the side of the cam holding member 6 facing the presser plate 7 and are arranged concentrically with the rotating shaft 4, and brakes made of steel balls are provided in the cam grooves 11. The loosening cam member 12 is fitted, the presser plate 7 is provided with an annular groove 27 having an arcuate cross section into which the protrusion of the cam member 12 protruding from the cam holding member 6 is fitted, and the friction plates 24, 25 are The friction plate 26 is fixed to the side surface of the driven gear 5, and the friction plate 26 is fixed to the side surface of the ratchet wheel 10.
【０００８】回転軸４の他端側部分およびロードシーブ
３の側部に連設された支軸２８は、電動チェーンブロッ
クのフレーム２９により軸受３０，３１を介して支承さ
れ、軸受３０の外側において回転軸４に嵌設されたスペ
ーサ３２とフレーム２９との間にオイルシール３３が嵌
設され、前記大径軸部１４とフレーム２９との間にオイ
ルシール３４が嵌設され、前記回転軸４の他端部に設け
られた雄ねじ部に、スペーサ３２，軸受３０および押圧
リング２１を介してばね部材１５を締付ける調節用ナッ
ト１３とロックナット３５とが螺合されている。前記ブ
レーキ用爪車１０に係合するブレーキ用爪片９はフレー
ム２９に枢着され、その爪片９に係合用ばね３６が係止
され、前記ロードシーブ３に荷物を吊上げるためのロー
ドチェーン（図示を省略した）が巻掛けられる。A support shaft 28 connected to the other end of the rotating shaft 4 and the side of the load sheave 3 is supported by a frame 29 of the electric chain hoist via bearings 30 and 31. An oil seal 33 is fitted between the spacer 32 fitted to the rotating shaft 4 and the frame 29, and an oil seal 34 is fitted between the large diameter shaft portion 14 and the frame 29. An adjusting nut 13 for tightening the spring member 15 and a lock nut 35 are screwed into the male threaded portion provided at the other end via the spacer 32, bearing 30, and press ring 21. The brake pawl piece 9 that engages with the brake pawl wheel 10 is pivotally attached to the frame 29, and an engagement spring 36 is locked to the pawl piece 9, and a load chain for hoisting a load onto the load sheave 3 is attached. (not shown) is wrapped around it.
【０００９】前記調節用ナット１３により締付けられる
押え盤押圧用ばね部材１５とブレーキ受盤８とそれらの
間に介在された押え盤７と従動歯車５とブレーキ用爪車
１０と摩擦板２４，２５，２６とによりトルクリミッタ
が構成され、かつ前記ブレーキ受盤８および押え盤押圧
用ばね部材１５によって押え盤７と従動歯車５と各摩擦
板２４，２５，２６とを介して把持されるブレーキ用爪
車１０と、これに係合するブレーキ用爪片９と、カム溝
１１を有するカム保持部材６と、カム溝１１に嵌入され
たブレーキ弛緩用カム部材１２とにより、吊荷落下防止
用メカニカルブレーキが構成されている。The presser plate pressing spring member 15 tightened by the adjustment nut 13, the brake receiver plate 8, the presser plate 7 interposed between them, the driven gear 5, the brake pawl 10, and the friction plates 24, 25. , 26 constitute a torque limiter, and is held by the brake receiving plate 8 and the presser plate pressing spring member 15 via the presser plate 7, the driven gear 5, and each friction plate 24, 25, 26. The ratchet wheel 10, the brake claw piece 9 that engages with the ratchet wheel 10, the cam holding member 6 having the cam groove 11, and the brake release cam member 12 fitted into the cam groove 11 form a mechanical mechanism for preventing suspended loads from falling. Brakes are configured.
【００１０】次に第１実施例の電動チェーンブロックの
動作について説明する。電動機１により駆動軸２を巻上
方向に回転させると、歯車減速機構を介してカム保持部
材６が回転されるが、その回転方向は図５の矢印Ａ方向
であるので、ブレーキ弛緩用カム部材１２がカム溝１１
における深い位置に配置され、そのため従動歯車５，押
え盤７，ブレーキ用爪車１０およびブレーキ受盤８と各
摩擦板２４，２５，２６とは予め設定された締付力で締
付けられるので、従動歯車５の回転は押え盤７およびブ
レーキ受盤８を介して回転軸４に伝達され、従ってトル
クリミッタにより設定されたトルクの範囲内で巻上運転
が行なわれる。Next, the operation of the electric chain hoist of the first embodiment will be explained. When the drive shaft 2 is rotated in the hoisting direction by the electric motor 1, the cam holding member 6 is rotated via the gear reduction mechanism, but since the direction of rotation is in the direction of arrow A in FIG. 12 is the cam groove 11
Therefore, the driven gear 5, presser plate 7, brake pawl 10, brake receiver 8, and each friction plate 24, 25, 26 are tightened with a preset tightening force. The rotation of the gear 5 is transmitted to the rotary shaft 4 via the holding plate 7 and the brake receiving plate 8, and therefore the hoisting operation is performed within the torque range set by the torque limiter.
【００１１】次に電動機１により駆動軸２を巻下方向に
回転させると、歯車減速機構を介してカム保持部材６が
逆回転すなわち図５の矢印Ｂ方向に回転されるので、ブ
レーキ弛緩用カム部材１２がカム溝１１における浅い位
置に移動され、カム保持部材６の側面からのブレーキ弛
緩用カム部材１２の突出量が多くなり、図６に示すよう
に、そのブレーキ弛緩用カム部材１２によりカム保持部
材６と押え盤７とが相対的に離反移動されるので、メカ
ニカルブレーキが弛緩し、吊り荷重によってロードシー
ブ３および回転軸４が電動機１による回転速度よりも速
く回転される。しかし、前記回転はメカニカルブレーキ
を締め付けることとなり、この弛緩，締め付けの繰り返
しにより、結果的に、電動機による回転に近い速度で巻
下運転が行なわれる。Next, when the drive shaft 2 is rotated in the downward direction by the electric motor 1, the cam holding member 6 is rotated in the opposite direction, that is, in the direction of arrow B in FIG. The member 12 is moved to a shallow position in the cam groove 11, and the amount of protrusion of the brake release cam member 12 from the side surface of the cam holding member 6 increases, and as shown in FIG. Since the holding member 6 and the presser plate 7 are relatively moved apart, the mechanical brake is relaxed, and the load sheave 3 and the rotating shaft 4 are rotated faster than the rotational speed of the electric motor 1 due to the hanging load. However, the rotation tightens the mechanical brake, and as a result of this repetition of loosening and tightening, the hoisting operation is performed at a speed close to that of rotation by the electric motor.
【００１２】図７ないし図１６は本発明の第２実施例を
示すものであって、ブレーキ受盤８の内側に連設された
ボス３６に、中間フランジ３７を有する支承リング３８
が、摺動自在にかつ回動不能に嵌合され、前記支承リン
グ３８におけるブレーキ受盤８側に、ブレーキ用爪車１
０が筒状軸受２２を介して回転自在に嵌合され、前記支
承リング３８におけるカム保持部材６側に、クラッチ盤
３９が筒状軸受４０を介して回転自在に嵌合され、前記
ブレーキ用爪車１０とクラッチ盤３９とにわたって複数
の連動回転用ピン４１が挿入され、前記中間フランジ３
７の両側面と爪車１０およびクラッチ盤３９との間に、
摩擦板４２，４３が介在されている。7 to 16 show a second embodiment of the present invention, in which a support ring 38 having an intermediate flange 37 is attached to a boss 36 connected to the inside of the brake receiver 8.
is fitted slidably and unrotatably, and a brake pawl wheel 1 is fitted on the brake receiver 8 side of the support ring 38.
0 is rotatably fitted through a cylindrical bearing 22, and a clutch disc 39 is rotatably fitted through a cylindrical bearing 40 to the cam holding member 6 side of the support ring 38, and the brake pawl is rotatably fitted through a cylindrical bearing 40. A plurality of interlocking rotation pins 41 are inserted between the wheel 10 and the clutch disc 39, and the intermediate flange 3
7 and between the ratchet wheel 10 and the clutch disc 39,
Friction plates 42 and 43 are interposed.
【００１３】前記クラッチ盤３９における従動歯車５に
対向する側部に、傾斜底面４４を有する複数の円弧状の
第１クラッチ溝４５が設けられ、前記従動歯車５におけ
るクラッチ盤３９に対向する側部に、傾斜底面４６を有
する複数の第２クラッチ溝４７が設けられ、その第２ク
ラッチ溝４７に鋼球からなるクラッチ部材４８が配置さ
れているが、その他の構成は第１実施例の場合と同様で
ある。A plurality of arc-shaped first clutch grooves 45 having an inclined bottom surface 44 are provided on the side of the clutch disc 39 facing the driven gear 5, and the side of the driven gear 5 facing the clutch disc 39 is provided with a plurality of arcuate first clutch grooves 45 having an inclined bottom surface 44. , a plurality of second clutch grooves 47 having an inclined bottom surface 46 are provided, and a clutch member 48 made of steel balls is disposed in the second clutch grooves 47, but the other configuration is the same as that of the first embodiment. The same is true.
【００１４】図１５は電動チェーンブロックを巻上運転
したときのブレーキ制御装置とクラッチ装置の状態を示
すものであって、ブレーキ制御装置におけるブレーキ弛
緩用カム部材１２がカム溝１１における深い位置に配置
されているので、ブレーキ装置が作動し、かつクラッチ
部材４８が第２クラッチ溝４７の浅い位置に配置されて
いるので、クラッチ部材４８により従動歯車５とクラッ
チ盤３９とが結合される。FIG. 15 shows the state of the brake control device and clutch device when the electric chain block is hoisted, and the brake release cam member 12 in the brake control device is disposed at a deep position in the cam groove 11. Since the brake device is operated and the clutch member 48 is disposed at a shallow position in the second clutch groove 47, the driven gear 5 and the clutch disk 39 are coupled by the clutch member 48.
【００１５】図１６は電動チェーンブロックを巻下運転
したときのブレーキ制御装置とクラッチ装置の状態を示
すものであって、ブレーキ制御装置におけるブレーキ弛
緩用カム部材１２がカム溝１１における浅い位置に配置
されて、押え盤７をカム保持部材６から離れる方向に移
動しているので、ブレーキ装置が弛緩され、かつクラッ
チ部材４８が第２クラッチ溝４７の深い位置に収容され
ているので、従動歯車５とクラッチ盤３９とは結合され
ない。FIG. 16 shows the state of the brake control device and clutch device when the electric chain block is hoisted down, and the brake release cam member 12 in the brake control device is disposed at a shallow position in the cam groove 11. Since the presser plate 7 is moved in the direction away from the cam holding member 6, the brake device is relaxed, and the clutch member 48 is housed deep in the second clutch groove 47, so the driven gear 5 and the clutch disc 39 are not coupled.
【００１６】第２実施例の場合は、第１実施例の場合よ
りも多くの摩擦板を設けているので、小さい押え盤押圧
用ばね部材１５の力で、大きい伝達トルクを得ることが
できる。In the case of the second embodiment, since more friction plates are provided than in the first embodiment, a large transmitted torque can be obtained with a small force of the presser plate pressing spring member 15.
【００１７】[0017]
【発明の効果】本発明によれば、従来の電動チェーンブ
ロックにおける中間駆動歯車とブレーキ受盤との間に設
けられている支承リングおよび支承部材を省略し、ブレ
ーキ用爪車１０を支承するブレーキ受盤８を、回転軸４
のロードシーブ３側に設けられた大径軸部１４の側面に
係合したので電動チェーンブロックを構成する部品数を
少なくして、電動チェーンブロックの組立てを容易にか
つ迅速に行なうことができ、しかも電動チェーンブロッ
クの製造コストを安くすることができる。According to the present invention, the support ring and support member provided between the intermediate drive gear and the brake receiver in the conventional electric chain hoist are omitted, and the brake that supports the brake pawl 10 is provided. The receiving plate 8 is connected to the rotating shaft 4.
Since it engages with the side surface of the large diameter shaft portion 14 provided on the side of the load sheave 3, the number of parts constituting the electric chain hoist can be reduced, and the electric chain hoist can be assembled easily and quickly. Moreover, the manufacturing cost of the electric chain hoist can be reduced.
【図１】本発明の第１実施例に係る電動チェーンブロッ
クの一部を示す横断平面図である。FIG. 1 is a cross-sectional plan view showing a part of an electric chain hoist according to a first embodiment of the present invention.
【図２】前記電動チェーンブロックの一部縦断側面図で
ある。FIG. 2 is a partially longitudinal side view of the electric chain hoist.
【図３】前記電動チェーンブロックにおけるトルクリミ
ッタを有する歯車伝動機構の拡大縦断側面図である。FIG. 3 is an enlarged longitudinal cross-sectional side view of a gear transmission mechanism having a torque limiter in the electric chain hoist.
【図４】前記電動チェーンブロックにおける従動歯車の
内側に設けられたカム保持部材および球体を示す正面図
である。FIG. 4 is a front view showing a cam holding member and a sphere provided inside a driven gear in the electric chain block.
【図５】図４のＣ−Ｃ線断面図である。FIG. 5 is a sectional view taken along line CC in FIG. 4;
【図６】前記電動チェーンブロックの巻下運転時におけ
るトルクリミッタの状態を示す縦断側面図である。FIG. 6 is a longitudinal side view showing the state of the torque limiter during lowering operation of the electric chain hoist.
【図７】本発明の第２実施例に係る電動チェーンブロッ
クの一部を示す横断平面図である。FIG. 7 is a cross-sectional plan view showing a part of an electric chain hoist according to a second embodiment of the present invention.
【図８】前記電動チェーンブロックの一部縦断側面図で
ある。FIG. 8 is a partially longitudinal side view of the electric chain hoist.
【図９】前記電動チェーンブロックにおけるトルクリミ
ッタを有する中間歯車伝動機構の拡大縦断側面図である
。FIG. 9 is an enlarged vertical sectional side view of an intermediate gear transmission mechanism having a torque limiter in the electric chain block.
【図１０】前記電動チェーンブロックにおける従動歯車
の内側に設けられたカム保持部材および球体を示す正面
図である。FIG. 10 is a front view showing a cam holding member and a sphere provided inside a driven gear in the electric chain block.
【図１１】図１０のＤ−Ｄ線断面図である。11 is a sectional view taken along line DD in FIG. 10. FIG.
【図１２】図１０のＥ−Ｅ線断面図である。FIG. 12 is a sectional view taken along line E-E in FIG. 10;
【図１３】図９のＦ−Ｆ線断面図である。13 is a sectional view taken along line FF in FIG. 9. FIG.
【図１４】図１３のＧ−Ｇ線断面図である。14 is a sectional view taken along line GG in FIG. 13. FIG.
【図１５】前記電動チェーンブロックの巻上運転時にお
けるブレーキ制御装置およびクラッチ装置の状態とを示
す縦断側面図である。FIG. 15 is a longitudinal sectional side view showing the states of a brake control device and a clutch device during hoisting operation of the electric chain hoist.
【図１６】前記電動チェーンブロックの巻下運転時にお
けるブレーキ制御装置およびクラッチ装置の状態とを示
す縦断側面図である。FIG. 16 is a longitudinal sectional side view showing the states of a brake control device and a clutch device during lowering operation of the electric chain hoist.
１ 電動機 ２ 駆動軸 ３ ロードシーブ ４ 回転軸 ５ 従動歯車 ６ カム保持部材 ７ 押え盤 ８ ブレーキ受盤 ９ ブレーキ用爪片 １０ ブレーキ用爪車 １１ カム溝 １２ ブレーキ弛緩用カム部材 １３ 調節用ナット １４ 大径軸部 １５ 押え盤押圧用ばね部材 １６ 駆動歯車 １７ 中間軸 １８ 中間従動歯車 １９ 中間駆動歯車 ２０ 軸受リング ２１ 押圧リング ２２ 筒状軸受 ２３ スラストベアリング ２４ 摩擦板 ２５ 摩擦板 ２６ 摩擦板 ２７ 円環状溝 ２８ 支軸 ２９ フレーム ３２ スペーサ ３７ 中間フランジ ３８ 支承リング ３９ クラッチ盤 ４１ 連動回転用ピン ４２ 摩擦板 ４３ 摩擦板 ４４ 傾斜底面 ４５ 第１クラッチ溝 ４６ 傾斜底面 ４７ 第２クラッチ溝 ４８ クラッチ部材 1 Electric motor 2 Drive shaft 3 Load sheave 4 Rotation axis 5 Driven gear 6 Cam holding member 7 Presser plate 8 Brake receiver 9 Brake claw piece 10 Brake ratchet wheel 11 Cam groove 12 Brake release cam member 13 Adjustment nut 14 Large diameter shaft part 15 Spring member for pressing the presser plate 16 Drive gear 17 Intermediate shaft 18 Intermediate driven gear 19 Intermediate drive gear 20 Bearing ring 21 Pressure ring 22 Cylindrical bearing 23 Thrust bearing 24 Friction plate 25 Friction plate 26 Friction plate 27 Annular groove 28 Support shaft 29 Frame 32 Spacer 37 Intermediate flange 38 Support ring 39 Clutch board 41 Interlocking rotation pin 42 Friction plate 43 Friction plate 44 Slanted bottom surface 45 First clutch groove 46 Slanted bottom surface 47 Second clutch groove 48 Clutch member
Claims (1)
ロードシーブ３を設けた回転軸４との間に、トルクリミ
ッタおよびメカニカルブレーキを備えている歯車減速機
構が介在され、前記回転軸４に、歯車減速機構における
従動歯車５の内側に設けられたカム保持部材６が嵌設さ
れると共に、そのカム保持部材６の一側部および他側部
に配置された押え盤７およびブレーキ受盤８が摺動自在
にかつ回動不能に嵌設され、ブレーキ用爪片９に係合す
るブレーキ用爪車１０は従動歯車５とブレーキ受盤８と
の間に介在され、前記カム保持部材６の側部に回転軸周
囲方向に沿って深さが変化するカム溝１１が設けられ、
そのカム溝１１にブレーキ弛緩用カム部材１２が嵌入さ
れ、前記回転軸４に押え盤７の押圧力を調節する調節用
ナット１３が螺合されている電動チェーンブロックにお
いて、前記ブレーキ受盤８が、回転軸４のロードシーブ
３側に設けられた大径軸部１４の側面に係合され、前記
押え盤７の外面に、前記調節用ナット１３により押圧さ
れる押え盤押圧用ばね部材１５が配置されている電動チ
ェーンブロック。1. A gear reduction mechanism equipped with a torque limiter and a mechanical brake is interposed between a drive shaft 2 rotated by an electric motor 1 and a rotary shaft 4 provided with a load sheave 3. A cam holding member 6 provided inside the driven gear 5 in the gear reduction mechanism is fitted, and a holding plate 7 and a brake receiving plate 8 are arranged on one side and the other side of the cam holding member 6. A brake pawl wheel 10 is fitted in a slidable but non-rotatable manner and engages with the brake pawl piece 9, and is interposed between the driven gear 5 and the brake receiver 8, and is attached to the cam holding member 6. A cam groove 11 whose depth changes along the circumferential direction of the rotating shaft is provided on the side,
In the electric chain block, a brake release cam member 12 is fitted into the cam groove 11, and an adjustment nut 13 for adjusting the pressing force of the presser plate 7 is screwed onto the rotating shaft 4. , a presser plate pressing spring member 15 is engaged with a side surface of a large diameter shaft portion 14 provided on the load sheave 3 side of the rotating shaft 4, and is pressed against the outer surface of the presser plate 7 by the adjustment nut 13. Electric chain hoist in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015991A JPH0825716B2 (en) | 1991-02-25 | 1991-02-25 | Electric chain block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015991A JPH0825716B2 (en) | 1991-02-25 | 1991-02-25 | Electric chain block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04272094A true JPH04272094A (en) | 1992-09-28 |
| JPH0825716B2 JPH0825716B2 (en) | 1996-03-13 |
Family
ID=12851418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5015991A Expired - Lifetime JPH0825716B2 (en) | 1991-02-25 | 1991-02-25 | Electric chain block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0825716B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578824B2 (en) * | 2001-04-23 | 2003-06-17 | Vital Kogyo Kabushiki Kaisha | Overload-preventing device for winch |
| KR100403765B1 (en) * | 2001-05-23 | 2003-10-30 | 두산중공업 주식회사 | Hoisting Drive System Of Electric Overhead Traveling Crane Winch is able to Prevent the Dropping Of Road |
| WO2013060066A1 (en) * | 2011-10-28 | 2013-05-02 | 上海东锐风电技术有限公司 | Endless chain electric hoist for wind turbine tower |
-
1991
- 1991-02-25 JP JP5015991A patent/JPH0825716B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578824B2 (en) * | 2001-04-23 | 2003-06-17 | Vital Kogyo Kabushiki Kaisha | Overload-preventing device for winch |
| KR100403765B1 (en) * | 2001-05-23 | 2003-10-30 | 두산중공업 주식회사 | Hoisting Drive System Of Electric Overhead Traveling Crane Winch is able to Prevent the Dropping Of Road |
| WO2013060066A1 (en) * | 2011-10-28 | 2013-05-02 | 上海东锐风电技术有限公司 | Endless chain electric hoist for wind turbine tower |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0825716B2 (en) | 1996-03-13 |
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