JPH08150906A - Float of outrigger - Google Patents
Float of outriggerInfo
- Publication number
- JPH08150906A JPH08150906A JP29309894A JP29309894A JPH08150906A JP H08150906 A JPH08150906 A JP H08150906A JP 29309894 A JP29309894 A JP 29309894A JP 29309894 A JP29309894 A JP 29309894A JP H08150906 A JPH08150906 A JP H08150906A
- Authority
- JP
- Japan
- Prior art keywords
- receiving member
- swash plate
- jack
- float
- jack receiving
- 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.)
- Pending
Links
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、クレーン本体の上下分
解作業時などの安定性の確保に用いられるアウトリガジ
ャッキのフロートの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a float structure of an outrigger jack used for ensuring stability when vertically disassembling a crane body.
【０００２】[0002]
【従来の技術】図４はクレーン本体の上下分解作業を示
す。クローラ式の下部走行体１には旋回装置２を介して
上部旋回体３が搭載されている。下部走行体１の四隅に
はアウトリガジャッキ４のジャッキシリンダ４ａが一基
ずつ取り付けられている。分解作業時にはジャッキシリ
ンダ４ａと接地面Ｇとの間にフロート４ｂが配置され、
ジャッキシリンダ４ａが伸ばされて下部走行体１が持ち
上げられる。この状態でクレーン本体が輸送状態まで分
解される。2. Description of the Related Art FIG. 4 shows a vertical disassembly operation of a crane body. An upper revolving structure 3 is mounted on a crawler type lower traveling structure 1 via a revolving device 2. Jack cylinders 4a of the outrigger jacks 4 are attached to the four corners of the lower traveling body 1 one by one. At the time of disassembling work, the float 4b is arranged between the jack cylinder 4a and the ground surface G,
The jack cylinder 4a is extended and the lower traveling body 1 is lifted. In this state, the crane body is disassembled to the transportation state.
【０００３】図５はトラッククレーンの作業姿勢を示
す。タイヤ５ａにより自走可能なキャリア５に上部旋回
体３が旋回自在に搭載され、その前部に俯仰可能なブー
ム６が配置され、ブーム６の先端に吊り荷７が吊り下げ
られている。キャリア５の四隅にはアウトリガジャッキ
４のジャッキシリンダ４ａが一基ずつ取り付けられてい
る。作業時にはジャッキシリンダ４ａと接地面Ｇとの間
にフロート４ｂが配置され、ジャッキシリンダ４ａが伸
ばされてキャリア５が持ち上げられる。従って、上部旋
回体３、ブーム６、吊り荷７等の全荷重がアウトリガジ
ャッキ４で支持される。トラッククレーンの移動時には
すべてのジャッキシリンダ４ａが縮められ、フロート４
ｂはキャリア５の適所に格納される。FIG. 5 shows a working posture of a truck crane. An upper revolving structure 3 is rotatably mounted on a carrier 5 which can be self-propelled by a tire 5a, a boom 6 which can be lifted up is arranged in front of the carrier 5, and a suspended load 7 is suspended at the tip of the boom 6. The jack cylinders 4a of the outrigger jacks 4 are attached to the four corners of the carrier 5 one by one. At the time of work, the float 4b is arranged between the jack cylinder 4a and the ground surface G, and the jack cylinder 4a is extended to lift the carrier 5. Therefore, the entire load of the upper swing body 3, the boom 6, the suspended load 7, etc. is supported by the outrigger jack 4. When the truck crane moves, all the jack cylinders 4a are contracted and the float 4
b is stored in place on the carrier 5.
【０００４】図６はフロートの従来例を示すもので、
（ａ）は右半分がフロートの側面外観を、左半分が断面
を示し、（ｂ）は（ａ）のア部の拡大図であり、（ｃ）
は全体の斜視図である。これらの図から明かなように、
フロートは、接地面に載置される接地板８と、接地板８
の上面に立設された支柱９と、支柱９の上端に配置され
たジャッキ受け部材１０と、支柱９を取り巻く円錐状の
斜板１１とを有し、各部材８〜１１が互いに溶接されて
一体構造とされている。ジャッキ受け部材１０は、上述
したジャッキシリンダのロッドの下端を受け止めるもの
で、大荷重に耐え得るように表面を硬化した鋼材により
構成されている。ジャッキ部材１０の上端面中央にはジ
ャッキシリンダのロッドと嵌合する球座面１０ａが形成
されている。一方、接地板８、支柱９および斜板１１は
フロートの軽量化を図るため、アルミニウム板または薄
板鋼板にて構成されている。ジャッキ受け部材１０の外
径φＡよりも支柱９の外径φＢは小さく、斜板１１の上
端はジャッキ受け部材１０の下面に直接溶接されてい
た。FIG. 6 shows an example of a conventional float.
(A) is a side view of the float in the right half, the cross section is in the left half, (b) is an enlarged view of a part of (a), (c)
FIG. 3 is an overall perspective view. As you can see from these figures,
The float includes a ground plate 8 placed on a ground surface and a ground plate 8
Has a pillar 9 erected on the upper surface of the pillar, a jack receiving member 10 arranged at the upper end of the pillar 9, and a conical swash plate 11 surrounding the pillar 9, and the members 8 to 11 are welded to each other. It is an integrated structure. The jack receiving member 10 receives the lower end of the rod of the jack cylinder described above, and is made of a steel material whose surface is hardened so as to withstand a large load. At the center of the upper end surface of the jack member 10, a ball seat surface 10a that fits with the rod of the jack cylinder is formed. On the other hand, the ground plate 8, the column 9, and the swash plate 11 are made of an aluminum plate or a thin steel plate in order to reduce the weight of the float. The outer diameter φB of the column 9 was smaller than the outer diameter φA of the jack receiving member 10, and the upper end of the swash plate 11 was directly welded to the lower surface of the jack receiving member 10.
【０００５】[0005]
【発明が解決しようとする課題】上述したフロートで
は、支柱９の軸方向と平行な力Ｆ1がジャッキ受け部材
１０に作用したとき、その力Ｆ1はジャッキ受け部材１
０、支柱９、接地板８と順に伝わり、斜板１１には大き
な力が働かない。ところが、フロートの接地面やクレー
ン本体が傾いていると、ジャッキ受け部材１０には支柱
９の軸方向から傾いた力Ｆ2が作用し、このため主補強
部材である支柱９に本来伝わるべき力が従補強部材であ
る斜板１１に直接働く。従って、斜板１１の板厚を大き
くしてその強度を高める必要が生じ、フロートの重量が
増加して作業者によるフロートの設置、撤去作業や持ち
運びが困難であった。In the above-mentioned float, when the force F 1 parallel to the axial direction of the column 9 acts on the jack receiving member 10, the force F 1 is applied to the jack receiving member 1.
0, pillar 9, and ground plate 8 are transmitted in this order, and no large force acts on the swash plate 11. However, when the ground contact surface of the float or the crane body is tilted, the jack receiving member 10 is acted on by the force F 2 tilted from the axial direction of the support column 9, so that the force that should be originally transmitted to the support column 9 that is the main reinforcing member. Directly acts on the swash plate 11, which is a secondary reinforcing member. Therefore, it becomes necessary to increase the plate thickness of the swash plate 11 to increase its strength, and the weight of the float increases, making it difficult for an operator to install, remove, or carry the float.
【０００６】本発明の目的は、斜板の負荷を減らして軽
量化できるフロートを提供することにある。An object of the present invention is to provide a float capable of reducing the load on the swash plate and reducing the weight.
【０００７】[0007]
【課題を解決するための手段】一実施例を示す図１に対
応付けて説明すると、請求項１の発明に係るアウトリガ
ジャッキのフロートは、支柱９Ａと、支柱９Ａの上端に
配置されたジャッキ受け部材１０と、支柱９Ａを外周側
から補強する斜板１１とを備え、ジャッキ受け部材１０
の外径φＡよりも支柱９Ａの外径φＢが大きく設定され
て上述した目的を達成する。請求項２の発明は請求項１
の発明に係るフロートに適用され、斜板１１がジャッキ
受け部材１０から離れている。図２に対応付けて説明す
ると、請求項３の発明に係るアウトリガジャッキのフロ
ートは、支柱９Ｂと、支柱９Ｂの上端に配置されたジャ
ッキ受け部材１０と、支柱９Ｂを外周側から補強する斜
板１２とを備え、斜板１２がジャッキ受け部材１０から
離されて上述した目的を達成する。請求項４の発明は請
求項３の発明に係るフロートに適用され、斜板１２の上
端がジャッキ受け部材１０から下方へ離れた位置で支柱
９Ａに固定されている。A float of an outrigger jack according to a first aspect of the present invention comprises a column 9A and a jack receiver arranged at an upper end of the column 9A. The jack receiving member 10 is provided with the member 10 and the swash plate 11 that reinforces the column 9A from the outer peripheral side.
The outer diameter φB of the column 9A is set larger than the outer diameter φA of the above to achieve the above-described object. The invention of claim 2 is claim 1
Applied to the float according to the present invention, the swash plate 11 is separated from the jack receiving member 10. Explaining in association with FIG. 2, the float of the outrigger jack according to the invention of claim 3 includes a pillar 9B, a jack receiving member 10 arranged at the upper end of the pillar 9B, and a swash plate that reinforces the pillar 9B from the outer peripheral side. 12 and the swash plate 12 is separated from the jack receiving member 10 to achieve the above-mentioned object. The invention according to claim 4 is applied to the float according to the invention according to claim 3, and the upper end of the swash plate 12 is fixed to the column 9A at a position apart from the jack receiving member 10 downward.
【０００８】[0008]
【作用】請求項１の発明ではジャッキ受け部材１０に加
わる荷重が大径の支柱９Ａに作用して分散され、斜板１
１の負荷が軽減される。請求項２、３の発明ではジャッ
キ受け部材１０に加わる荷重が斜板１１，１２に直接作
用しない。請求項４の発明では、ジャッキ受け部材１０
と支柱９Ｂの外径の大小に拘わりなく、ジャッキ受け部
材１０に加わる荷重が斜板１２に直接作用しない。支柱
９Ｂとジャッキ受け部材１０との接合部ＣＰが斜板１２
の上方に露出して目視が可能となる。According to the first aspect of the invention, the load applied to the jack receiving member 10 acts on the large-diameter column 9A to be dispersed, and the swash plate 1
The load of 1 is reduced. In the inventions of claims 2 and 3, the load applied to the jack receiving member 10 does not directly act on the swash plates 11 and 12. In the invention of claim 4, the jack receiving member 10
The load applied to the jack receiving member 10 does not directly act on the swash plate 12 regardless of the outer diameter of the column 9B. The joint portion CP between the column 9B and the jack receiving member 10 is the swash plate 12.
It is exposed above and can be viewed.
【０００９】なお、本発明の構成を説明する上記課題を
解決するための手段と作用の項では、本発明を分かり易
くするために実施例の図を用いたが、これにより本発明
が実施例に限定されるものではない。Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. It is not limited to.
【００１０】[0010]
【実施例】以下、図１〜図３を参照して本発明の実施例
を説明する。なお、図１〜図３において上述した図６と
共通する部分には同一符号を付し、それらの説明は省略
する。 −第１実施例− 図１は第１実施例のフロートを示し、（ａ）は右半分が
フロートの側面外観を、左半分が断面を示し、（ｂ）は
（ａ）のア部の拡大図である。この例では、支柱９Ａの
外径φＢがジャッキ受け部材１０の外径φＡよりも大き
く設定され、斜板１１の上端は支柱９Ａの上端と位置合
わせされて溶接されている。Embodiments of the present invention will be described below with reference to FIGS. 1 to 3 are denoted by the same reference numerals as those in FIG. 6 described above, and the description thereof will be omitted. -First embodiment-Fig. 1 shows a float of the first embodiment, (a) the right half shows a side view of the float, the left half shows a cross section, and (b) shows an enlargement of part (a). It is a figure. In this example, the outer diameter φB of the column 9A is set larger than the outer diameter φA of the jack receiving member 10, and the upper end of the swash plate 11 is aligned with the upper end of the column 9A and welded.
【００１１】以上の構造によれば、支柱９Ａの軸方向か
ら傾いた荷重Ｆ2がジャッキ受け部材１０の着力点Ｐ
A（球座面１０ａの下端中心位置）に作用した場合、図
１（ｂ）に示すように支柱９Ａの軸方向と平行な分力Ｆ
2aとこれに直交する分力Ｆ2bとが生じる。このとき、着
力点ＰBでは分力Ｆ2aから支柱９Ａの圧縮反力を差し引
いた力ｆaと、分力Ｆ2bから支柱９Ａの接地板８に対す
るはり反力（曲げ荷重に対して着力点ＰBに生じる支柱
９Ａの反力）を差し引いた力ｆbとが加わり、これらの
力ｆa，ｆbの合力ｆが斜板１１には働くことになる。こ
の斜板１１に働く力ｆは主補強部材である支柱９Ａに働
く力よりも十分に小さく、従って斜板１１に必要な強度
を確保しつつその厚さを減らして斜板１１を軽量化でき
る。なお、支柱９Ａを従来よりも大径としたので、支柱
９Ａの断面積や断面係数を従来よりも大きくして圧縮や
曲げに対する強度を増加させることができる。According to the above structure, the load F 2 tilted from the axial direction of the column 9A is applied to the jack receiving member 10 by the force application point P.
When acting on A (the center position of the lower end of the ball seat surface 10a), a component force F parallel to the axial direction of the column 9A as shown in FIG. 1 (b).
2a and a component force F 2b orthogonal thereto are generated. At this time, at the force application point P B , a force f a obtained by subtracting the compression reaction force of the column 9A from the component force F 2a and a beam reaction force of the column 9A from the component force F 2b to the ground plate 8 (the force application point for bending load) The force f b obtained by subtracting the reaction force of the column 9A generated on P B is added, and the resultant force f of these forces f a and f b acts on the swash plate 11. The force f exerted on the swash plate 11 is sufficiently smaller than the force exerted on the column 9A which is the main reinforcing member, and therefore, the thickness of the swash plate 11 can be reduced by reducing its thickness while ensuring the strength required for the swash plate 11. . Since the column 9A has a larger diameter than the conventional one, it is possible to increase the cross-sectional area and the section modulus of the column 9A as compared with the conventional one to increase the strength against compression and bending.
【００１２】−第２実施例− 図２は第２実施例のフロートを示し、（ａ）はフロート
の側面外観を一部断面視して示す図、（ｂ）は（ａ）の
イ部の拡大図、（ｃ）は全体の斜視図である。本実施例
では、支柱９Ｂの外径がジャッキ受け部材１０の外径φ
Ａに一致し、その外周に略三角形状の４枚（１枚は図示
略）の斜板１２が支柱９Ｂの周方向へ等しい間隔で溶接
されている。そして、支柱９Ｂの高さＬ1よりも斜板１
２の高さＬ2が小さく設定され、これにより斜板１２の
上端がジャッキ受け部材１０から離されている。このよ
うな構造でも、ジャッキ受け部材１０の荷重が斜板１２
に直接作用しないので、斜板１２を薄くしてフロートを
軽量化できる。Second Embodiment FIG. 2 shows a float of the second embodiment, (a) is a partial cross-sectional view of the side view of the float, and (b) is a part (a) of FIG. An enlarged view, (c) is an overall perspective view. In this embodiment, the outer diameter of the column 9B is the outer diameter φ of the jack receiving member 10.
Four swash plates 12 (one of which is not shown) having a substantially triangular shape, which correspond to A, are welded to the outer periphery of the swash plate 12 at equal intervals in the circumferential direction. Then, the swash plate 1 is more than the height L 1 of the column 9B.
The height L 2 of 2 is set small so that the upper end of the swash plate 12 is separated from the jack receiving member 10. Even with such a structure, the load of the jack receiving member 10 is increased by the swash plate 12.
Since it does not directly act on the float, the swash plate 12 can be thinned to reduce the weight of the float.
【００１３】−第３実施例− 図３は第３実施例のフロートの支柱９Ｃ、ジャッキ受け
部材１０及び斜板１１の接合部分を示す。本実施例で
は、支柱９Ｃがジャッキ受け部材１０よりも小径のまま
であり、斜板１１の上端がジャッキ部材１０から下方へ
離れた位置にて支柱９Ｃの外周に溶接されている。この
ような構造でもジャッキ受け部材１０に作用した荷重が
斜板１１に直接働かないので斜板１１の軽量化が可能と
なる。なお、支柱９Ｃをジャッキ受け部材１０よりも大
径としてもよい。-Third Embodiment- FIG. 3 shows a joint portion of a support column 9C, a jack receiving member 10 and a swash plate 11 of a float according to a third embodiment. In this embodiment, the column 9C is still smaller in diameter than the jack receiving member 10, and the upper end of the swash plate 11 is welded to the outer periphery of the column 9C at a position apart from the jack member 10 downward. Even with such a structure, the load acting on the jack receiving member 10 does not directly act on the swash plate 11, so the weight of the swash plate 11 can be reduced. The pillar 9C may have a larger diameter than the jack receiving member 10.
【００１４】上述した第２実施例、第３実施例では、支
柱９Ｂ、９Ｃとジャッキ受け部材１０との接合部ＣＰが
斜板１１、１２の上方に露出して目視が可能である。従
って、支柱９Ｂ、９Ｃとジャッキ受け部材１０との溶接
状態の点検が容易で、破損時には直ちに補修できる。In the second and third embodiments described above, the joint portion CP between the columns 9B and 9C and the jack receiving member 10 is exposed above the swash plates 11 and 12 and is visible. Therefore, it is easy to inspect the welding state of the columns 9B and 9C and the jack receiving member 10 and repair immediately when they are broken.
【００１５】各実施例では支柱９Ａ〜９Ｃやジャッキ受
け部材１０を断面形状を円形としたが、楕円状、方形状
など適宜変形してよい。支柱やジャッキ受け部材を非円
形の断面形状としたときは、ジャッキ受け部材の外周面
よりも支柱の外周面が外側にある限り、ジャッキ受け部
材の外径よりも支柱の外径が大きいことになる。接地
板、ジャッキ受け部材や支柱の接合には、溶接以外にも
ボルト締めなど周知の接合方法を用いてよい。In each of the embodiments, the pillars 9A to 9C and the jack receiving member 10 have a circular cross section, but they may be appropriately modified such as an elliptical shape or a rectangular shape. When the strut or jack receiving member has a non-circular cross-sectional shape, the outer diameter of the strut is larger than the outer diameter of the jack receiving member as long as the outer peripheral surface of the strut is outside the outer peripheral surface of the jack receiving member. Become. In addition to welding, well-known joining methods such as bolting may be used for joining the ground plate, the jack receiving member, and the column.
【００１６】[0016]
【発明の効果】以上説明したように、本発明ではジャッ
キ受け部材から斜板へ直接作用する荷重を低減し、ある
いは直接的な荷重伝達を阻止できるので、斜板を軽量化
してフロートを持ち運ぶ際の作業者の負担を軽減でき
る。特に請求項４の発明では、ジャッキ受け部材と支柱
との接合部が斜板外に露出し、両者の接合状態の目視点
検や補修を容易に行なうことができる。As described above, according to the present invention, the load directly acting on the swash plate from the jack receiving member can be reduced, or direct load transmission can be prevented. Therefore, when the swash plate is made light and the float is carried. The burden on the operator can be reduced. In particular, in the invention of claim 4, the joint between the jack receiving member and the support is exposed to the outside of the swash plate, and the visual inspection and repair of the joint between the two can be easily performed.
【図１】本発明の第１実施例のフロートの構成を示す
図。FIG. 1 is a diagram showing a configuration of a float according to a first embodiment of the present invention.
【図２】本発明の第２実施例のフロートの構成を示す
図。FIG. 2 is a diagram showing a configuration of a float according to a second embodiment of the present invention.
【図３】本発明の第３実施例のフロートの構成を示す
図。FIG. 3 is a diagram showing a configuration of a float according to a third embodiment of the present invention.
【図４】クレーン本体の上下分解作業を行なっている状
態を示す図。FIG. 4 is a view showing a state in which the crane main body is being disassembled vertically.
【図５】トラッククレーンの作業状態を示す図。FIG. 5 is a view showing a working state of the truck crane.
【図６】従来のフロートの構成を示す図。FIG. 6 is a diagram showing a configuration of a conventional float.
４ アウトリガジャッキ ８ 接地板 ９Ａ，９Ｂ，９Ｃ 支柱 １０ １１，１２ 斜板 4 Outrigger jack 8 Ground plate 9A, 9B, 9C Strut 10 11, 12 Swash plate
Claims (4)
ッキ受け部材と、前記支柱を外周側から補強する斜板と
を備え、前記ジャッキ受け部材の外径よりも前記支柱の
外径が大きく設定されていることを特徴とするアウトリ
ガジャッキのフロート。1. A strut, a jack receiving member arranged at an upper end of the strut, and a swash plate that reinforces the strut from an outer peripheral side, wherein an outer diameter of the strut is larger than an outer diameter of the jack receiving member. A float of an outrigger jack characterized by being set large.
れていることを特徴とする請求項１記載のアウトリガジ
ャッキのフロート。2. The float of an outrigger jack according to claim 1, wherein the swash plate is separated from the jack receiving member.
ッキ受け部材と、前記支柱を外周側から補強する斜板と
を備え、前記斜板が前記ジャッキ受け部材から離れてい
ることを特徴とするアウトリガジャッキのフロート。3. A pillar, a jack receiving member arranged at an upper end of the pillar, and a swash plate that reinforces the pillar from the outer peripheral side, and the swash plate is separated from the jack receiving member. And outrigger jack float.
から下方へ離れた位置で前記支柱に固定されていること
を特徴とする請求項３記載のアウトリガジャッキのフロ
ート。4. The float for an outrigger jack according to claim 3, wherein an upper end of the swash plate is fixed to the support at a position spaced downward from the jack receiving member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29309894A JPH08150906A (en) | 1994-11-28 | 1994-11-28 | Float of outrigger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29309894A JPH08150906A (en) | 1994-11-28 | 1994-11-28 | Float of outrigger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08150906A true JPH08150906A (en) | 1996-06-11 |
Family
ID=17790403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29309894A Pending JPH08150906A (en) | 1994-11-28 | 1994-11-28 | Float of outrigger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08150906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610870A (en) * | 2018-12-20 | 2019-04-12 | 董立志 | A kind of reinforcing support construction for architectural engineering |
-
1994
- 1994-11-28 JP JP29309894A patent/JPH08150906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610870A (en) * | 2018-12-20 | 2019-04-12 | 董立志 | A kind of reinforcing support construction for architectural engineering |
| CN109610870B (en) * | 2018-12-20 | 2020-12-25 | 浙江明城建设有限公司 | A consolidate bearing structure for building engineering |
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