JPH0345000B2 - - Google Patents
Info
- Publication number
- JPH0345000B2 JPH0345000B2 JP59121601A JP12160184A JPH0345000B2 JP H0345000 B2 JPH0345000 B2 JP H0345000B2 JP 59121601 A JP59121601 A JP 59121601A JP 12160184 A JP12160184 A JP 12160184A JP H0345000 B2 JPH0345000 B2 JP H0345000B2
- Authority
- JP
- Japan
- Prior art keywords
- elevating
- frame
- seat plate
- lifting
- lifter
- 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
- 230000003028 elevating effect Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 8
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Braking Arrangements (AREA)
- Types And Forms Of Lifts (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、リフターの偏心荷重防止装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an eccentric load prevention device for a lifter.
一般にスラブ等の大重量荷物を受承し、昇降さ
せるリフターは、昇降フレームをリフター本体に
沿つてボールネジジヤツキあるいは油圧シリンダ
ー等の昇降ロツドで昇降作動するようにされてい
る。
In general, a lifter that receives and raises/lowers a heavy load such as a slab has a lifting frame that is moved up and down along the lifter body using a lifting rod such as a ball screw jack or a hydraulic cylinder.
ところで、該昇降ロツドは通常軸力のみを考慮
して設計・製作されているので、ラジアル荷重
（横荷重）、モーメント荷重に対しては非常に弱
い。そこで、重量物を載置した昇降フレームを昇
降させる際に昇降ロツドに軸力のみが作用するた
めには、重量物を偏心させずに昇降フレームに載
せなければならないが、重量物自体が変形してい
たり、また昇降フレームに載置させる際に重量物
が偏心してしまうことが多分にあり、実際には不
可能である。 By the way, since the lifting rod is usually designed and manufactured considering only the axial force, it is very weak against radial load (lateral load) and moment load. Therefore, in order for only the axial force to act on the lifting rod when raising and lowering the lifting frame on which a heavy object is placed, the heavy object must be placed on the lifting frame without eccentricity, but the heavy object itself must not be deformed. In many cases, this is not possible because the heavy objects often become eccentric when placed on the lifting frame.
従つて、従来のリフターにおいては、昇降ロツ
ドの軸径を太くしたり等しなければならず、昇降
装置の大型化およびメンテナンスの煩雑化を免れ
なかつた。 Therefore, in conventional lifters, the shaft diameter of the lifting rod must be made thicker, which inevitably increases the size of the lifting device and complicates maintenance.
この発明は以上の問題点に鑑み創案されたもの
で、重量物が偏心して載置されても、昇降ロツド
に悪影響をおよぼすことなく昇降作業を円滑に行
うことができるリフター偏心荷重防止装置を提供
することを目的とする。
This invention was devised in view of the above-mentioned problems, and provides a lifter eccentric load prevention device that allows lifting work to be carried out smoothly without adversely affecting the lifting rod even if a heavy object is placed eccentrically. The purpose is to
この発明の偏心荷重防止装置は、昇降ロツドに
より昇降フレームを昇降させるリフターに採用さ
れるものである。そしてその構成は、昇降ロツド
の上端面と昇降フレームの下方に設けた座板との
間に複数の鋼球を配し、昇降ロツド上端面および
座板下面には鋼球の半径より大きい曲率を有する
受座を付設し、座板の上面とこれに対向する昇降
フレームの下面とを球面とし、かつ昇降フレーム
の下降時にこれを支持する昇降フレーム支持部を
設けて前記球面を密接・離隔自在としたことを特
徴とする。
The eccentric load prevention device of the present invention is employed in a lifter that raises and lowers a lifting frame using a lifting rod. Its structure consists of a plurality of steel balls arranged between the upper end of the lifting rod and a seat plate provided below the lifting frame, and the upper end of the lifting rod and the lower surface of the seat plate have a radius of curvature larger than the radius of the steel balls. The upper surface of the seat plate and the lower surface of the elevating frame opposite thereto are made spherical, and an elevating frame support part is provided to support the elevating frame when the elevating frame is lowered, so that the spherical surfaces can be brought into close contact with each other or separated from each other. It is characterized by what it did.
以下、この発明を図面に示す実施例に基いて説
明する。
The present invention will be explained below based on embodiments shown in the drawings.
第１図〜第４図はこの発明による偏心荷重防止
装置を採用したスラブリフター１を示すもので、
第１図は側面図、第２図は平面図、第３図は正面
図、第４図は第１図の−線断面図である。 Figures 1 to 4 show a slab lifter 1 that employs an eccentric load prevention device according to the present invention.
1 is a side view, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a sectional view taken along the line -- in FIG.
スラブリフター１は、基礎上に設置された本体
２に沿つて昇降自在に取付けられた昇降フレーム
６により、台車２１より運ばれてきたスラブ２０
を受け取るものである（第１図参照）。本体２の
内側壁にはガイドプレート４が設けられ、昇降フ
レーム６の本体２側面にはガイドローラ５が取付
けられており、かつ、昇降フレーム６の内壁面に
摺接するガイドフレーム３が本体２に架設され、
昇降フレーム６作動時の摩擦を少なくすると共に
昇降フレーム６にかかる水平力を本体２で受ける
ようにして、昇降機にかかる負荷を減らしてい
る。 The slab lifter 1 uses a lifting frame 6 that is attached to a main body 2 installed on a foundation so as to be able to rise and fall freely, and a slab 20 that is carried from a cart 21.
(See Figure 1). A guide plate 4 is provided on the inner wall of the main body 2, a guide roller 5 is attached to the side surface of the main body 2 of the elevating frame 6, and the guide frame 3, which is in sliding contact with the inner wall surface of the elevating frame 6, is attached to the main body 2. It was erected,
The load on the elevator is reduced by reducing the friction when the lifting frame 6 is operated and by allowing the main body 2 to receive the horizontal force applied to the lifting frame 6.
実施例では昇降フレーム６を、同調作動される
２個の昇降機で支持するようにしている。この昇
降機には上部に昇降ロツドを有するボールネジジ
ヤツキ９を用いており、モータ７により駆動され
る。そして左右の駆動シヤフトはクラツチ８を介
して繋がれており、左右２つの昇降フレーム６，
６は連動して昇降でき、また、クラツチ８の切離
し作動で個別に昇降できるようになつている。ま
た、本体２には昇降フレーム支持部３Ａが設けら
れており、昇降フレーム６は昇降時以外にはこの
昇降フレーム支持部３Ａに支持されるので、作動
時を除きボールネジジヤツキ９に負荷がかかるこ
とはない。 In the embodiment, the elevating frame 6 is supported by two elevating machines operated in synchronization. This elevator uses a ball screw jack 9 having a lifting rod on its upper part, and is driven by a motor 7. The left and right drive shafts are connected via a clutch 8, and the two left and right lifting frames 6,
6 can be raised and lowered in conjunction with each other, and can also be raised and lowered individually by disengaging the clutch 8. Further, the main body 2 is provided with an elevating frame support portion 3A, and since the elevating frame 6 is supported by this elevating frame support portion 3A except when it is being elevated or lowered, a load is applied to the ball screw jack 9 except when it is in operation. Never.
第５図、第６図はリフター偏心荷重防止装置１
７を示すもので、第５図は第４図のＸ部拡大図か
つ第６図の−線展開断面図、第６図は第４図
のＹ視拡大図である。 Figures 5 and 6 show lifter eccentric load prevention device 1.
7, FIG. 5 is an enlarged view of the X section in FIG. 4 and a developed sectional view taken along the line - in FIG. 6, and FIG. 6 is an enlarged view of the Y section in FIG.
第５図において、昇降フレーム６はガイドフレ
ーム３に案内されており、ボールネジジヤツキ９
は最縮小位置にある。 In FIG. 5, the lifting frame 6 is guided by the guide frame 3, and the ball screw jack 9
is in the most reduced position.
ボールネジジヤツキ９の先端にはフランジ状の
ジヤツキ頭部軸受１０が溶接固定されており、こ
のジヤツキ頭部１０の上面と昇降フレーム６の下
方に設けられた座板１３との間に鋼球１１が配さ
れ、そして鋼球１１と接するジヤツキ頭部軸受１
０上面および座板１３の下面には鋼球１１の径よ
り大きい曲率を有する受座１２が付設されてい
る。 A flange-shaped jack head bearing 10 is welded and fixed to the tip of the ball screw jack 9, and steel balls 11 are placed between the upper surface of the jack head 10 and a seat plate 13 provided below the lifting frame 6. is arranged, and the jack head bearing 1 is in contact with the steel balls 11.
A catch seat 12 having a curvature larger than the diameter of the steel ball 11 is attached to the upper surface of the steel ball 11 and the lower surface of the seat plate 13.
また、該座板１３の上面には球面軸受１４が、
昇降フレーム６下面対向位置には球面軸受座１５
がそれぞれ設けられており、昇降フレーム６の下
降時には本体２に設けた昇降フレーム支持部３Ａ
に支持されボールネジジヤツキ９を上昇作動させ
ると、球面軸受１４と球面軸受座１５とは面接触
するよう構成されている。 Further, a spherical bearing 14 is mounted on the upper surface of the seat plate 13.
A spherical bearing seat 15 is located opposite the lower surface of the lifting frame 6.
are provided respectively, and when the elevating frame 6 is lowered, the elevating frame support portion 3A provided on the main body 2
The spherical bearing 14 and the spherical bearing seat 15 are configured to come into surface contact when the ball screw jack 9 is moved upwardly.
また、前記ジヤツキ頭部軸受１０、座板１３、
球面軸受座１５の外周近傍にはスリーブ状のカバ
ー１６が取付けられており、鋼球１１と受座１
２、および球面軸受１４と球面受座１５は完全に
シールされている。 Further, the jack head bearing 10, the seat plate 13,
A sleeve-shaped cover 16 is attached near the outer periphery of the spherical bearing seat 15, and covers the steel balls 11 and the seat 1.
2, and the spherical bearing 14 and spherical seat 15 are completely sealed.
機械構造上、左右のガイドプレート４，４、ガ
イドローラ５，５間には隙間があるため、昇降フ
レーム６が上昇する時に受承荷重が偏心していれ
ば、昇降フレーム６は偏心している側に傾動する
こととなる。従つて、昇降フレーム６とポールネ
ジジヤツキ９が直結されている場合には、前記傾
動作用力が横力としてボールネジジヤツキ９に直
接伝達される。
Due to the mechanical structure, there is a gap between the left and right guide plates 4, 4 and guide rollers 5, 5, so if the received load is eccentric when the lifting frame 6 rises, the lifting frame 6 will move to the eccentric side. It will tilt. Therefore, when the lifting frame 6 and the pole screw jack 9 are directly connected, the tilting force is directly transmitted to the ball screw jack 9 as a lateral force.
そこでこの発明ではボールネジジヤツキ９の上
端面（ジヤツキ頭部軸受の上端面）に鋼球１１を
配しころがり接触とすることによりボールネジジ
ヤツキ９に作用する横力を解消している。 Therefore, in the present invention, the lateral force acting on the ball screw jack 9 is eliminated by disposing a steel ball 11 on the upper end surface of the ball screw jack 9 (the upper end surface of the jack head bearing) to make rolling contact.
鋼球１１は、鋼球１１の半径により大きい曲率
を有する受座１２で保持されているので、自動調
心性があり、ボールネジジヤツキ９を下動させて
座板上面の球面軸受１４が昇降フレーム６の球面
軸受座１５より離間したとき、座板１３は復元す
る。 Since the steel ball 11 is held by the seat 12 which has a larger curvature than the radius of the steel ball 11, it is self-aligning, and when the ball screw jack 9 is moved downward, the spherical bearing 14 on the upper surface of the seat plate moves into the lifting frame. When separated from the spherical bearing seat 15 of No. 6, the seat plate 13 returns to its original state.
なお、実施例として連続鋳造機から搬出された
高温スラブを受承するスラブリフターへの適用例
を示したが、本発明は大重量物を受承し昇降する
種々のリフターに適用可能である。 Although an example of application to a slab lifter that receives high-temperature slabs discharged from a continuous casting machine has been shown as an example, the present invention can be applied to various lifters that receive and lift heavy objects.
この発明は以上の構成からなり、昇降ロツドの
上端面に複数の鋼球を配して座板を設け、昇降ロ
ツドの上端面および座板下面には鋼球の半径より
大きい曲率を有する受座を設けてあるので、昇降
フレームが持上げられてその傾き方向が変化して
昇降フレームとガイドプレート４との間のガタ
（製作誤差）及び昇降フレームのたわみ変形のた
めに昇降ロツド頭部に横力をうけた際座板１３は
側方に移動して昇降ロツドに作用する横力は解除
される。従つてスラブ等の大重量物を偏心して受
承しても、昇降ロツドに悪影響をおよぼすことな
く昇降作業を長期間円滑に行うことができる。
This invention has the above-mentioned structure, and a seat plate is provided with a plurality of steel balls arranged on the upper end surface of the elevating rod, and a catch plate having a radius of curvature larger than the radius of the steel balls is provided on the upper end surface of the elevating rod and the lower surface of the seat plate. Since the lifting frame is lifted and its inclination direction changes, play between the lifting frame and the guide plate 4 (manufacturing error) and deflection deformation of the lifting frame cause lateral force on the lifting rod head. When this occurs, the seat plate 13 moves laterally and the lateral force acting on the lifting rod is released. Therefore, even if a heavy object such as a slab is received eccentrically, the lifting and lowering work can be carried out smoothly for a long period of time without adversely affecting the lifting rod.
また荷重を掛けたまま次の作業を待機する際は
昇降フレームを支持部て支え安全な状態で待機す
ることができる他、昇降フレームが支持部３Ａで
支持されたとき、座板が復元され次回の昇降フレ
ーム持上げ作業を安全に行なえる。 In addition, when waiting for the next work with a load applied, the lifting frame can be supported by the support part and waited in a safe state, and when the lifting frame is supported by the support part 3A, the seat plate is restored and the next time You can safely lift the lifting frame.
第１図はスラブ台車との位置関係を示すスラブ
リフターの側面図、第２図はその平面図、第３図
は同じく正面図、第４図は同じく第１図の−
線断面図、第５図はこの発明のリフター偏心荷重
防止装置の一実施例を示すもので、第４図のＸ部
拡大図でありかつ第６図の−線展開断面図、
第６図は第４図のＹ視拡大図である。
１……スラブリフター、２……本体、３……ガ
イドフレーム、４……ガイドプレート、５……ガ
イドローラ、６……昇降フレーム、７……モー
タ、８……クラツチ、９……ポールネジジヤツ
キ、１０……ジヤツキ頭部軸受、１１……鋼球、
１２……受座、１３……座板、１４……球面軸
受、１５……球面軸受座、１６……カバー、１７
……リフター偏心荷重防止装置、２０……スラ
ブ、２１……台車。
Figure 1 is a side view of the slab lifter showing its positional relationship with the slab truck, Figure 2 is its top view, Figure 3 is its front view, and Figure 4 is the same as in Figure 1.
5 shows an embodiment of the lifter eccentric load prevention device of the present invention, and is an enlarged view of the X section in FIG. 4, and a developed sectional view along the - line in FIG.
FIG. 6 is an enlarged Y-view enlarged view of FIG. 4. 1... Slab lifter, 2... Main body, 3... Guide frame, 4... Guide plate, 5... Guide roller, 6... Lifting frame, 7... Motor, 8... Clutch, 9... Pole screw Jacket, 10... Jacket head bearing, 11... Steel ball,
12...Catch seat, 13...Seat plate, 14...Spherical bearing, 15...Spherical bearing seat, 16...Cover, 17
...lifter eccentric load prevention device, 20...slab, 21...truck.
Claims (1)
リフターにおいて、 昇降ロツドの上端面と昇降フレームの下方に設
けた座板との間に複数の鋼球を配し、昇降ロツド
上端面および座板下面には鋼球の半径より大きい
曲率を有する受座を付設し、座板の上面とこれに
対向する昇降フレームの下面とを球面とし、かつ
昇降フレームの下降時にこれを支持する昇降フレ
ーム支持部を設けて前記球面を密接・離隔自在と
したことを特徴とするリフター偏心荷重防止装
置。[Scope of Claims] 1. In a lifter that raises and lowers an elevating frame using an elevating rod, a plurality of steel balls are arranged between the upper end surface of the elevating rod and a seat plate provided below the elevating rod, and the upper end surface of the elevating rod and The lower surface of the seat plate is provided with a catch having a radius of curvature larger than the radius of the steel ball, the upper surface of the seat plate and the lower surface of the elevating frame opposing this are spherical, and the elevating frame supports this when the elevating frame is lowered. A lifter eccentric load prevention device characterized in that a support portion is provided so that the spherical surfaces can be brought into close contact with each other or separated from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160184A JPS612696A (en) | 1984-06-13 | 1984-06-13 | Eccentric load preventive device for lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160184A JPS612696A (en) | 1984-06-13 | 1984-06-13 | Eccentric load preventive device for lifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS612696A JPS612696A (en) | 1986-01-08 |
| JPH0345000B2 true JPH0345000B2 (en) | 1991-07-09 |
Family
ID=14815289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12160184A Granted JPS612696A (en) | 1984-06-13 | 1984-06-13 | Eccentric load preventive device for lifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS612696A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3167080U (en) * | 2011-01-07 | 2011-04-07 | 有限会社池田機械設計 | Free-standing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS498182A (en) * | 1972-05-10 | 1974-01-24 | ||
| JPS4924117U (en) * | 1972-06-01 | 1974-03-01 | ||
| JPS5522647A (en) * | 1978-08-07 | 1980-02-18 | Kuraray Co Ltd | Carbonylation of olefinic compound |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224682U (en) * | 1975-08-11 | 1977-02-21 |
-
1984
- 1984-06-13 JP JP12160184A patent/JPS612696A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS498182A (en) * | 1972-05-10 | 1974-01-24 | ||
| JPS4924117U (en) * | 1972-06-01 | 1974-03-01 | ||
| JPS5522647A (en) * | 1978-08-07 | 1980-02-18 | Kuraray Co Ltd | Carbonylation of olefinic compound |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS612696A (en) | 1986-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |