JPH0711104Y2 - Coupling structure of brake cover and lever in lever type hoisting and traction device - Google Patents
Coupling structure of brake cover and lever in lever type hoisting and traction deviceInfo
- Publication number
- JPH0711104Y2 JPH0711104Y2 JP14396589U JP14396589U JPH0711104Y2 JP H0711104 Y2 JPH0711104 Y2 JP H0711104Y2 JP 14396589 U JP14396589 U JP 14396589U JP 14396589 U JP14396589 U JP 14396589U JP H0711104 Y2 JPH0711104 Y2 JP H0711104Y2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- brake cover
- boss
- support portion
- type hoisting
- 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.)
- Expired - Lifetime
Links
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】 (産業上の利用分野) 本考案は、レバー式巻上牽引装置のブレーキカバーにレ
バーを回転可能に結合する結合構造に関する。The present invention relates to a coupling structure for rotatably coupling a lever to a brake cover of a lever type hoisting and traction device.
(従来の技術) 従来、この種レバー式巻上牽引装置のブレーキカバーと
レバーとの結合構造として、例えば実公昭62-18625号公
報に記載されたものが知られており、この公報記載のも
のは、第3図に示すように前記ブレーキカバー(A)の
側部に固定支持環(B)を一体に屈曲形成すると共に、
前記レバー(C)側に円弧状の回転支持環(D)を一体
に屈曲形成して、この回転支持環(D)で前記固定支持
環(B)の内周部位を抱き込むことにより、該固定支持
環(B)に対し前記回転支持環(D)を回転可能に、か
つ、軸方向移動不能に支持するようにしている。(Prior Art) Conventionally, for example, a structure described in Japanese Utility Model Publication No. 62-18625 is known as a coupling structure of a brake cover and a lever of this type of lever-type hoisting and traction device. As shown in FIG. 3, a fixed support ring (B) is integrally formed on the side portion of the brake cover (A) by bending, and
An arcuate rotary support ring (D) is integrally bent and formed on the lever (C) side, and the rotary support ring (D) holds the inner peripheral portion of the fixed support ring (B). The rotary support ring (D) is rotatably supported on the fixed support ring (B) and is immovable in the axial direction.
(考案が解決しようとする課題) 所で、以上のような結合構造では、前記回転支持環
(B)及び回転支持環(D)は何れもブレーキカバー
(A)及びレバー(C)の素材を円弧状に屈曲して一体
に形成し、前記回転支持環(D)で固定支持環(B)を
抱き込むことにより前記回転支持環(D)を回転可能
で、かつ、軸方向移動不能に支持するようにしているか
ら、前記各支持環(B)(D)の加工に精度が要求され
ると共に組付工数も煩雑となり、コスト高となる問題が
あるし、また、前記レバー(C)を往復操作して例えば
荷揚げを行う場合、前記レバー(C)が前記固定支持環
(B)に対し傾くことがあり、特に負荷が大きく、傾き
が大きい場合、前記回転支持環(D)が変形することが
あり、しかも前記レバー(C)が傾くとき、前記回転支
持環(D)の径方向一側外周面が、前記固定支持環
(B)の径方向一側内周面に接触すると同時に、前記回
転支持環(D)の径方向他側内周面が、駆動軸に螺合す
る送りギヤ(E)の外周面に接触することがある。(Problems to be solved by the invention) However, in the coupling structure as described above, both the rotary support ring (B) and the rotary support ring (D) are made of the material of the brake cover (A) and the lever (C). The rotary support ring (D) is supported by the rotary support ring (D) so that the rotary support ring (D) can be rotated and cannot move in the axial direction by being bent and formed integrally in an arc shape and by embracing the fixed support ring (B) by the rotary support ring (D). Therefore, there is a problem that precision is required for processing each of the support rings (B) and (D), the number of assembling steps becomes complicated, and the cost increases, and the lever (C) is When performing reciprocating operation, for example, when unloading, the lever (C) may tilt with respect to the fixed support ring (B), and particularly when the load is large and the tilt is large, the rotary support ring (D) is deformed. And when the lever (C) tilts, The radial outer peripheral surface of the rotary support ring (D) contacts the radial inner peripheral surface of the fixed support ring (B), and at the same time, the radial outer peripheral surface of the rotary support ring (D). However, it may come into contact with the outer peripheral surface of the feed gear (E) screwed to the drive shaft.
つまり、前記回転支持環(D)が、その外周面と内周面
との2箇所が前記固定支持環(B)と送りギヤ(E)の
外周面とに接触することがある。このため、長年の使用
により摩耗が生じ、耐久性が悪くなる問題もあるし、ま
た、前記回転支持環(D)の変形により前記レバー
(C)のカバー(A)に対する軸方向の保持機能もなく
なって、ガタつきが生じ、レバー操作が重くなるなどの
支障を来し、場合によっては遊転操作が行えない問題が
生ずるのである。That is, the rotary support ring (D) may come into contact with the fixed support ring (B) and the outer peripheral surface of the feed gear (E) at two locations, the outer peripheral surface and the inner peripheral surface. For this reason, there is a problem that wear occurs due to long-term use and the durability deteriorates, and also the function of axially holding the cover (A) of the lever (C) by the deformation of the rotary support ring (D). This causes problems such as looseness, rattling, and heavy lever operation, and in some cases, a problem that the idle operation cannot be performed occurs.
本考案は以上のような問題に鑑みて考案したもので、そ
の目的は、ブレーキカバーとレバーとの結合部の結合強
度を強化すると共に、摩耗に対する耐久性を向上して、
前記結合部が変形したり或はクラックが入ったりして破
損するのを未然に防止でき、レバー式巻上牽引装置の確
実な操作を可能にできながら、遊転操作時にも支障を来
すことのないレバー式巻上牽引装置におけるブレーキカ
バーとレバーとの結合構造を提供することにある。The present invention was devised in view of the above problems, and its purpose is to enhance the coupling strength of the coupling portion between the brake cover and the lever and to improve the durability against wear,
It is possible to prevent the joint portion from being deformed or cracked and damaged, and it is possible to operate the lever type hoisting and pulling device surely, but it also causes trouble during idling operation. It is an object of the present invention to provide a coupling structure for a brake cover and a lever in a lever type hoisting and pulling device.
(課題を解決するための手段) 上記目的を達成するために、本考案では、レバー式巻上
牽引装置のブレーキカバー(13)に、レバー(16)を回
転可能に結合する結合構造において、前記ブレーキカバ
ー(13)には円筒形の支持部(13b)を設けると共に、
前記レバー(16)の内側壁には前記支持部(13b)に回
転可能に支持される筒状のボス部(16a)を設ける一
方、前記支持部(13b)とボス部(16a)との径方向内側
には、筒状部(21a)と、前記レバー(16)の内側壁と
前記支持部(13b)とに添設され、前記ボス部(16a)の
前記支持部(13b)に対する軸方向移動を規制する一対
の鍔部(21b)(2c)とをもち、前記ボス部(16a)を前
記支持部(13b)に回転可能で軸方向の移動を規制して
連結する環状連結体(21)を設けたことを特徴とするも
のである。(Means for Solving the Problems) In order to achieve the above object, in the present invention, in the coupling structure for rotatably coupling the lever (16) to the brake cover (13) of the lever type hoisting and traction device, The brake cover (13) is provided with a cylindrical support portion (13b),
A cylindrical boss portion (16a) rotatably supported by the support portion (13b) is provided on the inner wall of the lever (16), and the diameter of the support portion (13b) and the boss portion (16a) is increased. Inside the direction, the cylindrical portion (21a), the inner wall of the lever (16) and the support portion (13b) are provided along the axial direction of the boss portion (16a) with respect to the support portion (13b). An annular coupling body (21) having a pair of flange portions (21b) (2c) for restricting movement and for rotating the boss portion (16a) to the support portion (13b) so as to restrict movement in the axial direction. ) Is provided.
(作用) 前記レバー(16)側のボス部(16a)と、該ボス部(16
a)を回転可能に支持する前記ブレーキカバー(13)の
支持部(13b)とが、前記環状連結体(21)の筒状部(2
1a)上で各鍔部(21b)(21c)間に軸方向移動不能に挿
嵌保持されているため、前記連結体(21)により前記ボ
ス部(16a)と支持部(13b)との結合部の強度が強化さ
れると共に摩耗箇所が分散され、これにより、レバー操
作時の軸方向への傾動が抑えられて、前記結合部分が変
形したり或はクラックが入ったりすることがなくなっ
て、レバー式巻上牽引装置の確実な操作が可能となり、
また、前記結合部の変形に伴う遊転操作時の支障も防止
できるのである。(Operation) The boss (16a) on the lever (16) side and the boss (16a)
The support portion (13b) of the brake cover (13) that rotatably supports (a) is the tubular portion (2) of the annular coupling body (21).
1a) is fitted and held between the collar portions (21b) and (21c) so as to be immovable in the axial direction, so that the coupling body (21) connects the boss portion (16a) and the support portion (13b). The strength of the part is strengthened and the wear points are dispersed, whereby the tilting in the axial direction at the time of operating the lever is suppressed, and the joint part is not deformed or cracked, Lever type hoisting and pulling device can be operated reliably,
Further, it is possible to prevent troubles during the idling operation due to the deformation of the connecting portion.
(実施例) 第2図に示したレバー式巻上牽引装置は、所定間隔を置
いて対向状に配設された第1及び第2側板(1)(2)
間に、ロードシーブ(3)をもつ筒軸(4)を回転自由
に支持して、該筒軸(4)内に、後述する操作レバー側
から回転動力が伝達される駆動軸(5)を相対回転可能
に支持すると共に、この駆動軸(5)の前記第2側板
(2)から突出される外側端部と前記ロードシーブ
(3)との間に、複数の減速ギヤから成る減速歯車機構
(6)を介装させて、該減速歯車機構(6)で前記駆動
軸(5)の回転動力を、前記ロードシーブ(3)側に減
速して伝達するようにしている。(Embodiment) The lever type hoisting and pulling device shown in FIG. 2 has first and second side plates (1) and (2) which are arranged facing each other at a predetermined interval.
In between, a cylindrical shaft (4) having a load sheave (3) is rotatably supported, and a drive shaft (5) to which rotational power is transmitted from the operation lever side described later is provided in the cylindrical shaft (4). A reduction gear mechanism that includes a plurality of reduction gears and is supported between the load sheave (3) and an outer end of the drive shaft (5) protruding from the second side plate (2) so as to be relatively rotatable. (6) is interposed so that the reduction gear mechanism (6) decelerates and transmits the rotational power of the drive shaft (5) to the load sheave (3) side.
また、前記第1側板(1)から突出される前記駆動軸
(5)の外部側にハブ胴(7)を相対回転不能に取付
け、該ハブ胴(10)の外方側で前記駆動軸(5)上に、
外周に歯部(8a)をもつ送りギヤ(8)を螺動可能に挿
嵌すると共に、この送りギヤ(8)と前記ハブ胴(7)
との間に、一対のブレーキ板(9)(10)とブレーキ用
爪車(11)とをそれぞれ介装させ、かつ、前記第1側板
(1)に、前記爪車(11)と噛合する逆転防止爪(12)
を設けて、これら逆転防止爪(12)と爪車(11)及び各
ブレーキ板(9)(10)でメカニカルブレーキ(B)を
構成して、斯かるメカニカルブレーキ(B)の外周部
を、前記第1側板(1)にボルト結合されたブレーキカ
バー(13)で被覆する一方、このブレーキカバー(13)
の外側部で前記送りギヤ(8)の径方向外方側に、その
歯部(8a)に噛合可能な爪体(14)をもち、該爪体(1
4)を前記歯部(8a)に係脱操作する操作部(15)を備
えた操作レバー(16)を支持している。A hub barrel (7) is attached to the outside of the drive shaft (5) protruding from the first side plate (1) so that the hub barrel (7) cannot rotate relative to the drive shaft (5). 5) on
A feed gear (8) having a tooth portion (8a) on its outer periphery is screwably inserted, and the feed gear (8) and the hub barrel (7).
A pair of brake plates (9) and (10) and a brake ratchet wheel (11) are respectively interposed between them, and the first side plate (1) meshes with the ratchet wheel (11). Anti-reverse claw (12)
And the reverse rotation preventing pawl (12), the ratchet wheel (11), and the brake plates (9) and (10) constitute a mechanical brake (B), and the outer peripheral portion of the mechanical brake (B) is While covering with a brake cover (13) bolted to the first side plate (1), the brake cover (13)
Has a claw body (14) capable of meshing with the tooth part (8a) on the outer side in the radial direction of the feed gear (8) on the outer side of the claw body (1).
An operation lever (16) having an operation portion (15) for engaging and disengaging the tooth portion (8a) with the toothed portion (4) is supported.
更に、前記送りギヤ(8)の外方側で前記駆動軸(5)
上に、該駆動軸(5)に対し相対回転不能な筒体(17)
をセレーション結合により取付けて、該筒体(17)の外
周部位に送りハンドル(18)を回転可能に支持すると共
に、この送りハンドル(18)と前記送りギヤ(8)に、
それぞれ互いに噛合する係合歯(8b)(18a)を周方向
に所定間隔を置いて形成し、前記送りハンドル(18)の
回転操作で前記駆動軸(5)を回転させ、この回転によ
り前記駆動軸(5)に螺着する前記送りギヤ(8)を駆
動軸(5)に沿って軸方向外方、つまり前記ブレーキ板
(9)に対し離反する方向に移動させるようにしてお
り、また、前記送りギヤ(8)と筒体(17)との間に
は、前記送りギヤ(8)に所定の回転抵抗を与える複数
の弾性リング部材(19)を介装させている。Further, on the outer side of the feed gear (8), the drive shaft (5)
And a cylindrical body (17) that cannot rotate relative to the drive shaft (5).
Is attached by serration coupling, and the feed handle (18) is rotatably supported on the outer peripheral portion of the cylindrical body (17), and the feed handle (18) and the feed gear (8) are
Engagement teeth (8b) (18a) that mesh with each other are formed at predetermined intervals in the circumferential direction, and the drive shaft (5) is rotated by the rotation operation of the feed handle (18), and the rotation causes the drive The feed gear (8) screwed to the shaft (5) is moved axially outward along the drive shaft (5), that is, in a direction away from the brake plate (9). A plurality of elastic ring members (19) that give a predetermined rotation resistance to the feed gear (8) are interposed between the feed gear (8) and the cylindrical body (17).
尚、前記送りギヤ(8)の外側に設ける前記係合歯(8
b)は2個一対として第2図のように180度の位相差で前
記送りハンドル(18)に向かって突設させており、又前
記送りハンドル(18)に設ける前記係合歯(18a)も、
2個一対としてこれら各係合歯(8b)(18a)の係合で
前記送りハンドル(18)と送りギヤ(8)とを連動させ
ており、また、前記送りハンドル(18)における駆動軸
(5)の外方側に半径方向外方に延びる係合片(20a)
を持ったチェックワッシャ(20)を挿嵌させると共に、
前記送りハンドル(18)の内部側に、該ハンドル(18)
が一定角度回転されたときに前記ワッシャ(20)の係合
片(20a)と係合して、前記送りギヤ(8)の送りハン
ドル(18)側への移動量を規制する係合突起(18b)を
設けて、後述するような遊転操作時や微調整操作時に、
前記送りギヤ(8)の送りハンドル(18)に対する噛み
付きなどを未然に防止するようにしている。The engaging teeth (8) provided outside the feed gear (8)
As shown in FIG. 2, b) is a pair of two protruding toward the feed handle (18) with a phase difference of 180 degrees, and the engaging teeth (18a) provided on the feed handle (18). Also,
The feed handle (18) and the feed gear (8) are interlocked by the engagement of the respective engaging teeth (8b) (18a) as a pair of two, and the drive shaft ( 5) Engaging piece (20a) extending outward in the radial direction on the outer side
Insert the check washer (20) with the
Inside the feed handle (18), the handle (18)
Is engaged with the engaging piece (20a) of the washer (20) when rotated by a certain angle, and restricts the movement amount of the feed gear (8) toward the feed handle (18) ( 18b) is provided, and during idle operation or fine adjustment operation as described later,
The feed gear (8) is prevented from being caught in the feed handle (18).
しかして、以上のレバー式巻上牽引装置において、前記
ブレーキカバー(13)の外側部に前記操作レバー(16)
を、次のような結合構造で回転可能に結合させるのであ
る。Therefore, in the lever type hoisting and pulling device described above, the operation lever (16) is provided on the outer side of the brake cover (13).
Are rotatably coupled with the following coupling structure.
即ち、第1図で明らかなごとく、前記操作レバー(16)
の内側壁一部で前記送りギヤ(8)の外周対向部位に、
前記ブレーキカバー(13)側に突出する筒状のボス部
(16a)を一体形成すると共に、前記ブレーキカバー(1
3)側に、前記ボス部(16a)を受入れて回転可能に支持
する受入孔(13a)をもつ支持部(13b)を形成する一
方、前記ボス部(16a)の内周側で前記送りギヤ(8)
の外周対向部位に、前記ボス部(16a)と支持部(13b)
とを受入れて軸方向移動を規制する環状連結体(21)
を、前記送りギヤ(8)と所定隙間を置いて配設する。That is, as is apparent from FIG. 1, the operation lever (16)
A portion of the inner wall of the feed gear (8) facing the outer circumference,
A tubular boss portion (16a) protruding toward the brake cover (13) is integrally formed, and the brake cover (1
On the 3) side, a support portion (13b) having a receiving hole (13a) for receiving the boss portion (16a) and rotatably supporting the boss portion (16a) is formed, while the feed gear is provided on the inner peripheral side of the boss portion (16a). (8)
The boss portion (16a) and the support portion (13b) are provided at the outer peripheral facing portion.
A ring-shaped connector (21) that receives and controls axial movement.
Are arranged with a predetermined gap from the feed gear (8).
具体的に説明すると、前記環状連結体(21)は、前記ボ
ス部(16a)の内周面に摺接される筒状部(21a)と、該
筒状部(21a)の長さ方向両側から半径方向外方に向け
て一体に突設される一対の鍔部(21b)(21c)とを備え
た断面概略コ形状となし、かつ、全体をリング形状に形
成するのである。More specifically, the annular coupling body (21) includes a tubular portion (21a) slidably contacting the inner peripheral surface of the boss portion (16a) and both sides in the longitudinal direction of the tubular portion (21a). To have a pair of flanges (21b) and (21c) integrally projecting outwardly in the radial direction, and has a substantially U-shaped cross section, and is formed into a ring shape as a whole.
そして、前記ボス部(16a)と支持部(13b)とを、それ
ぞれ前記環状連結体(21)の筒状部(21a)と各鍔部(2
1b)(21c)との間に介装させるのであり、この場合、
例えば前記環状連結体(21)として、円筒部材を用い、
該円筒部材の外周に前記ボス部(16a)と支持部(13b)
とを介在させ、前記円筒部材の両端部をプレス加工によ
り半径方向外方へ鍔状に変形させるのであって、これに
より、前記支持部(13b)の受入孔(13a)に対する前記
ボス部(16a)の回転は自由となしながら、前記ボス部
(16a)が支持部(13b)に対し軸方向に移動するのを規
制できるのである。The boss portion (16a) and the support portion (13b) are respectively connected to the tubular portion (21a) of the annular coupling body (21) and the collar portions (2).
1b) (21c), and in this case,
For example, a cylindrical member is used as the annular connecting body (21),
The boss portion (16a) and the support portion (13b) are provided on the outer periphery of the cylindrical member.
And both ends of the cylindrical member are radially outwardly deformed into a brim-like shape by pressing, whereby the boss portion (16a) for the receiving hole (13a) of the support portion (13b) is formed. While the rotation of (1) is free, the boss (16a) can be restricted from moving in the axial direction with respect to the support (13b).
尚、前記環状連結体(21)の断面形状はU字状であって
もよいし、また、前記ボス部(16a)と支持部(13b)と
の軸方向の移動を阻止するに際し、前記連結体(21)の
各鍔部(21b)(21c)と、前記支持部(13b)及びボス
部(16a)との間に、前記ボス部(16a)と支持部(13
b)との相対回転を許すためのガタはあってもよいこと
は勿論である。The annular connecting body (21) may have a U-shaped cross-section, and when the axial movement of the boss portion (16a) and the supporting portion (13b) is blocked, the connecting portion is The boss portion (16a) and the support portion (13) are provided between the collar portions (21b) (21c) of the body (21) and the support portion (13b) and the boss portion (16a).
Of course, there may be some play to allow relative rotation with respect to b).
前記環状連結体(21)は、機械構造用炭素など機械的強
度に優れたものを用いることが望ましく、又、熱処理や
コーテイングなどの表面処理を施して、耐摩耗性を高め
るようにしてもよいのである。The annular connecting body (21) is preferably made of carbon having excellent mechanical strength such as carbon for mechanical structure, and may be subjected to surface treatment such as heat treatment or coating to enhance wear resistance. Of.
また、第1,2図に示した実施例において、前記ブレーキ
カバー(13)に設ける前記支持部(13b)は、二重に折
り返した折返片により円筒形に形成し、この二重折返部
の内周側に受入孔(13a)を設けている。斯くすること
により前記支持部(13b)の剛性を向上でき、前記受入
孔(13a)の変形を有効に防止できることになる。Further, in the embodiment shown in FIGS. 1 and 2, the support portion (13b) provided on the brake cover (13) is formed into a cylindrical shape by a folded piece that is double folded, and the double folded portion A receiving hole (13a) is provided on the inner peripheral side. By doing so, the rigidity of the support portion (13b) can be improved, and the deformation of the receiving hole (13a) can be effectively prevented.
次に、以上の構成としたレバー式巻上牽引装置の作用に
ついて説明する。Next, the operation of the lever type hoisting and pulling device configured as described above will be described.
先ず、前記操作レバー(16)に設けた操作部(15)の操
作で前記爪体(14)の送り爪を前記送りギヤ(8)に係
合させて、前記レバー(16)の操作を行うことにより、
前記送りギヤ(8)が正,逆方向に回転されるのであ
り、そして、正回転時には、前記送りギヤ(8)が前記
駆動軸(5)に沿って螺進され、前記メカニカルブレー
キ(B)が作動して、前記送りギヤ(8)の回転動力が
前記駆動軸(5)から前記減速歯車機構(6)及び筒軸
(4)を介して前記ロードシーブ(3)側に伝達され、
該ロードシーブ(3)の回転に伴い、その外周に掛回し
たロードチエンが回行されて荷物などの荷揚作業が行わ
れ、また、前記操作部(15)における爪体(14)の戻し
爪を前記送りギヤ(8)に係合させて、前記送りギヤ
(8)を前記レバー(16)で逆転操作することにより、
前記メカニカルブレーキ(B)の作動が中止されて、前
記駆動軸(5)が送りギヤ(8)の逆転量だけ逆回転さ
れて荷下作業が行われる。以上のように、前記レバー
(16)の操作により荷揚げ作業や荷下作業を行う場合
に、前記レバー(16)側のボス部(16a)と、前記ブレ
ーキカバー(13)側の支持部(13b)とが、前記環状連
結体(21)を介して軸方向移動不能に挿嵌保持され、前
記ボス部(16a)と前記支持部(13b)との結合部位強度
が著しく強化されていることから、前記レバー(16)の
軸方向傾動が未然に防止され、又、例え僅かに傾動する
ことがあっても、前記ボス部(16a)などにクラックが
入ったり、変形したりすることはなく、レバー式巻上牽
引装置の確実な操作が可能となり、しかも、前記連結体
(21)でボス部(16a)と支持部(13b)との抜け止めが
確実に行われて、前記レバー(16)が操作時にガタ付い
たりすることもなく、その操作性が高められる。First, the feed claw of the claw body (14) is engaged with the feed gear (8) by operating the operation part (15) provided on the operation lever (16) to operate the lever (16). By
The feed gear (8) is rotated in the forward and reverse directions, and at the time of forward rotation, the feed gear (8) is screwed along the drive shaft (5) to cause the mechanical brake (B). And the rotational power of the feed gear (8) is transmitted from the drive shaft (5) to the load sheave (3) side via the reduction gear mechanism (6) and the cylinder shaft (4),
Along with the rotation of the load sheave (3), the load chain hung on the outer periphery of the load sheave is circulated to carry out unloading work such as luggage, and the return claw of the claw body (14) in the operation section (15). Is engaged with the feed gear (8) and the feed gear (8) is reversely operated by the lever (16),
The operation of the mechanical brake (B) is stopped, the drive shaft (5) is reversely rotated by the reverse rotation amount of the feed gear (8), and the unloading work is performed. As described above, when performing unloading work or unloading work by operating the lever (16), the boss portion (16a) on the lever (16) side and the support portion (13b) on the brake cover (13) side. ) Is inserted and held so as to be immovable in the axial direction through the annular connecting body (21), and the strength of the joint portion between the boss portion (16a) and the support portion (13b) is significantly enhanced. , The axial tilt of the lever (16) is prevented in advance, and even if the lever (16) tilts slightly, the boss (16a) is not cracked or deformed. The lever-type hoisting and pulling device can be reliably operated, and moreover, the coupling body (21) reliably prevents the boss portion (16a) and the support portion (13b) from coming off, and the lever (16). The operability is enhanced without rattling during operation.
また、荷揚げ作業や荷下作業時に、前記ロードシーブ
(3)からのロードチエンの引出し量や巻上げ量を微調
整するときには、前記送りハンドル(18)を正,逆方向
に回転させ、このハンドル(18)の操作で前記送りギヤ
(8)を前記駆動軸(5)に対し、前記メカニカルブレ
ーキ(B)の作動若しくは非作動方向へと移動させるこ
とにより、前記ロードシーブ(3)を前記送りハンドル
(18)の回転相当量だけ正,逆回転させて、前記ロード
チエンの引出し量や巻上げ量を微調整するのである。Further, when finely adjusting the withdrawal amount or the winding amount of the load chain from the load sheave (3) at the time of unloading work or unloading work, the feed handle (18) is rotated in the forward and reverse directions, and this handle ( 18) The feed gear (8) is moved with respect to the drive shaft (5) in the actuating or non-actuating direction of the mechanical brake (B) by the operation of 18) to move the load sheave (3) to the feed handle. The load amount and the winding amount of the load chain are finely adjusted by rotating the load chain in the forward and reverse directions by the amount corresponding to the rotation of (18).
更に、以上のレバー式巻上牽引装置の遊転操作時、即
ち、前記ロードシーブ(3)を回転自由となして、その
ロードチエンの自由な引出しや巻取りを行うときには、
該ロードチエンを手などで把握し、つまり、前記ロード
シーブ(3)や駆動軸(5)などを停止させた状態で、
前記送りハンドル(18)を、前記メカニカルブレーキ
(B)の非作動方向へと回転させるのであるが、この場
合においても前記ボス部(16a)と支持部(13a)との結
合部分が変形して、前記送りギヤ(8)と当接係止する
ことがないので、前記送りギヤ(8)と筒体(17)との
間に介装した各リング部材(19)により、前記メカニカ
ルブレーキ(B)が非作動とされた状態下で、前記ロー
ドシーブ(3)と駆動軸(5)及び送りハンドル(18)
などが一体化され、前記ロードシーブ(3)の回転が自
由となって、前記ロードチエンの自由な引出しや巻取り
が可能となるのである。Furthermore, at the time of idling operation of the lever type hoisting and pulling device, that is, when the load sheave (3) is freely rotated and the load chain is freely pulled out and wound,
Grasping the load chain by hand, that is, with the load sheave (3), drive shaft (5), etc. stopped,
The feed handle (18) is rotated in the non-operating direction of the mechanical brake (B). In this case as well, the connecting portion between the boss portion (16a) and the support portion (13a) is deformed. Since the ring gear (19) interposed between the feed gear (8) and the tubular body (17) does not come into contact with and lock the feed gear (8), the mechanical brake (B ) Is deactivated, the load sheave (3), drive shaft (5) and feed handle (18)
And the like, the load sheave (3) can be freely rotated, and the load chain can be freely pulled out and wound.
(考案の効果) 以上説明したように、本考案にかかるレバー式巻上牽引
装置におけるブレーキカバーとレバーとの結合構造で
は、前記ブレーキカバー(13)には円筒形の支持部(13
b)を設けると共に、前記レバー(16)の内側壁には前
記支持部(13b)に回転可能に支持される筒状のボス部
(16a)を設ける一方、前記支持部(13b)とボス部(16
a)との径方向内側には、筒状部(21a)と、前記レバー
(16)の内側壁と前記支持部(13b)とに添設され、前
記ボス部(16a)の前記支持部(13b)に対する軸方向移
動を規制する一対の鍔部(21b)(2c)とをもち、前記
ボス部(16a)を前記支持部(13b)に回転可能で軸方向
の移動を規制して連結する環状連結体(21)を設けるよ
うにしたから、前記ブレーキカバー(13)とレバー(1
6)との結合部における結合強度を強化できると共に摩
耗に対する耐久性を向上でき、この結果、前記結合部が
変形したり、クラックが入ったりして破損するのを未然
に防止でき、レバー式巻上牽引装置の確実な操作を可能
にできながら、遊転操作時にも支障が生じたりするのを
防止できるのである。(Effects of the Invention) As described above, in the lever cover hoisting and pulling apparatus according to the present invention, in the coupling structure of the brake cover and the lever, the brake cover (13) has a cylindrical support portion (13).
b) and a cylindrical boss portion (16a) rotatably supported by the support portion (13b) is provided on the inner wall of the lever (16), while the support portion (13b) and the boss portion are provided. (16
Inside the tubular portion (21a), the inner wall of the lever (16) and the support portion (13b), the support portion of the boss portion (16a) ( 13b) has a pair of flanges (21b) (2c) for restricting axial movement, and the boss (16a) is rotatably connected to the support (13b) while restricting axial movement. Since the annular coupling body (21) is provided, the brake cover (13) and the lever (1
6) Strengthen the bond strength at the joint part with and improve the durability against abrasion, and as a result, it is possible to prevent the joint part from being deformed or cracked and damaged. While the upper traction device can be operated reliably, it is possible to prevent troubles during the idling operation.
第1図は本考案にかかるブレーキカバーとレバーとの結
合構造を示す要部の断面図、第2図は動結合構造を実施
したレバー式巻上牽引装置の縦断面図、第3図は従来例
の説明図である。 (13)……ブレーキカバー (13a)……受入孔 (13b)……支持部 (16)……レバー (21)……環状連結体 (21a)……筒状部 (21b,21c)……鍔部FIG. 1 is a sectional view of an essential part showing a coupling structure of a brake cover and a lever according to the present invention, FIG. 2 is a longitudinal sectional view of a lever type hoisting and traction device having a dynamic coupling structure, and FIG. It is explanatory drawing of an example. (13) …… Brake cover (13a) …… Reception hole (13b) …… Supporting part (16) …… Lever (21) …… Ring connection (21a) …… Cylindrical part (21b, 21c) …… Tsubabe
Claims (1)
バー(13)に、レバー(16)を回転可能に結合する結合
構造であって、 前記ブレーキカバー(13)には円筒形の支持部(13b)
を設けると共に、前記レバー(16)の内側壁には前記支
持部(13b)に回転可能に支持される筒状のボス部(16
a)を設ける一方、前記支持部(13b)とボス部(16a)
との径方向内側には、筒状部(21a)と、前記レバー(1
6)の内側壁と前記支持部(13b)とに添設され、前記ボ
ス部(16a)の前記支持部(13b)に対する軸方向移動を
規制する一対の鍔部(21b)(2c)とをもち、前記ボス
部(16a)を前記支持部(13b)に回転可能で軸方向の移
動を規制して連結する環状連結体(21)を設けているこ
とを特徴とするレバー式巻上牽引装置におけるブレーキ
カバーとレバーとの結合構造1. A coupling structure for rotatably coupling a lever (16) to a brake cover (13) in a lever type hoisting and traction device, wherein the brake cover (13) has a cylindrical support portion (13b). )
And a cylindrical boss (16) rotatably supported by the support (13b) on the inner wall of the lever (16).
a) is provided, while the support part (13b) and the boss part (16a) are provided.
On the inner side in the radial direction of and, the tubular portion (21a) and the lever (1
A pair of collar portions (21b) (2c) that are provided along the inner wall of 6) and the support portion (13b) and that restrict the axial movement of the boss portion (16a) with respect to the support portion (13b). A lever-type hoisting and traction device characterized in that an annular connecting body (21) for connecting the boss portion (16a) to the support portion (13b) while being rotatable and restricting axial movement is provided. Structure of the brake cover and lever in
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14396589U JPH0711104Y2 (en) | 1989-12-12 | 1989-12-12 | Coupling structure of brake cover and lever in lever type hoisting and traction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14396589U JPH0711104Y2 (en) | 1989-12-12 | 1989-12-12 | Coupling structure of brake cover and lever in lever type hoisting and traction device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0382390U JPH0382390U (en) | 1991-08-22 |
JPH0711104Y2 true JPH0711104Y2 (en) | 1995-03-15 |
Family
ID=31690713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14396589U Expired - Lifetime JPH0711104Y2 (en) | 1989-12-12 | 1989-12-12 | Coupling structure of brake cover and lever in lever type hoisting and traction device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0711104Y2 (en) |
-
1989
- 1989-12-12 JP JP14396589U patent/JPH0711104Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0382390U (en) | 1991-08-22 |
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