JPH0649481U - Bending boom of mobile crane - Google Patents
Bending boom of mobile craneInfo
- Publication number
- JPH0649481U JPH0649481U JP9151292U JP9151292U JPH0649481U JP H0649481 U JPH0649481 U JP H0649481U JP 9151292 U JP9151292 U JP 9151292U JP 9151292 U JP9151292 U JP 9151292U JP H0649481 U JPH0649481 U JP H0649481U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- vertical
- horizontal
- width direction
- frame
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
(57)【要約】
【目的】 ブーム格納時の上下方向寸法を小さくして前
方視界を向上する。
【構成】 車体１の旋回体４にレボフレーム７を取付
け、このレボフレーム７に垂直ブーム８を上下回動自在
に連結し、この垂直ブーム８とレボフレーム７に亘って
起伏シリンダを連結する。前記垂直ブーム８の可動フレ
ーム１１に支持フレーム１２を幅方向に回動自在に取付
け、この支持フレーム１２に水平ブーム１３を上下回動
自在に連結し、その水平ブーム１３と支持フレーム１２
に亘って水平ブーム起伏シリンダを連結して水平ブーム
１３を垂直ブーム８の幅方向に回動して幅方向に重ね合
せできるようにする。
(57) [Summary] [Purpose] To reduce the vertical dimension when the boom is retracted to improve the forward visibility. [Structure] A revo frame 7 is attached to a revolving structure 4 of a vehicle body 1, a vertical boom 8 is vertically rotatably connected to the revo frame 7, and a hoisting cylinder is connected between the vertical boom 8 and the revo frame 7. A support frame 12 is rotatably attached to the movable frame 11 of the vertical boom 8 in the width direction, and a horizontal boom 13 is vertically rotatably connected to the support frame 12. The horizontal boom 13 and the support frame 12 are connected to each other.
The horizontal boom hoisting cylinders are connected to each other so that the horizontal boom 13 can be rotated in the width direction of the vertical boom 8 so as to be overlapped in the width direction.
Description
【０００１】[0001]
本考案は、移動式クレーン車の折曲式ブームに関する。 The present invention relates to a folding boom for a mobile crane.
【０００２】[0002]
移動式クレーン車の折曲式ブームとしては例えば実開昭６３−４１０９２号公 報に示すものが知られている。 すなわち、車体に垂直ブームを起立姿勢と倒伏姿勢に上下回動自在に取付け、 この垂直ブームに水平ブームを上下回動自在に連結して折曲式ブームとし、走行 時には垂直ブームを倒伏姿勢とすると共に、水平ブームを垂直ブームの上部に重 ね合せた折曲姿勢で格納し、クレーン作業時には垂直ブームを起立姿勢として水 平ブームを上下に回動するようにしたものが知られている。 As a folding boom of a mobile crane, for example, the one shown in Japanese Utility Model Laid-Open No. 63-41092 is known. That is, a vertical boom is attached to the vehicle body so as to be vertically rotatable in an upright posture and a lying posture, and a horizontal boom is vertically rotatably connected to the vertical boom to form a folding boom. At the same time, it is known that the horizontal boom is stored in a folded posture in which it is superposed on the upper part of the vertical boom, and the horizontal boom is rotated up and down while the vertical boom is in an upright posture during crane work.
【０００３】 この折曲式ブームであれば走行時に垂直ブームと水平ブームを重ね合せてほぼ 水平にできるから移動式クレーン車の全長を短くできる。With this folding boom, the vertical boom and the horizontal boom can be overlapped and made almost horizontal during traveling, so that the total length of the mobile crane can be shortened.
【０００４】[0004]
かかる折曲ブームであると、垂直ブームと水平ブームが上下に重なり合うため に格納時にブームの上下寸法が大きくなって走行時に運転者の前方視界が悪くな る。 In such a bent boom, the vertical boom and the horizontal boom are vertically overlapped with each other, so that the vertical dimension of the boom becomes large when the boom is stowed, and the forward visibility of the driver is deteriorated during traveling.
【０００５】 そこで、本考案は前述の課題を解決できるようにした移動式クレーン車の折曲 式ブームを提供することを目的とする。Therefore, an object of the present invention is to provide a folding boom for a mobile crane, which can solve the above-mentioned problems.
【０００６】[0006]
本考案の移動式クレーン車の折曲式ブームは、車体１の旋回体４にレボフレー ム７を取付け、このレボフレーム７に垂直ブーム８の固定部を起立姿勢と倒伏姿 勢に上下回動自在に連結し、この垂直ブーム８の固定部とレボフレーム７に亘っ て起伏シリンダ１５を連結し、前記垂直ブーム８の可動ブーム１１の前後方向の 第１壁１１ａに垂直ブーム側ブラケット１６を幅方向に亘って固着し、この垂直 ブーム側ブラケット１６に長手方向両側に一側ピン穴１７と他側ピン穴１８を形 成し、前記支持フレーム１２に水平ブーム側ブラケット２３を固着し、この水平 ブーム側ブラケット２３の長手方向両側に一側ピン穴２４と他側ピン穴２５を形 成し、この一側ピン穴２４と前記垂直ブーム側ブラケット１６の他側ピン穴１８ に亘ってピン２６を嵌合して支持フレーム１２を幅方向に回動自在とし、該支持 フレーム１２に水平ブーム１３を上下回動自在に連結し、この水平ブーム１３と 支持フレーム１２に亘って水平ブーム起伏シリンダ２７を連結したものとしてあ る。 The folding boom of the mobile crane of the present invention has a revolving frame 7 attached to the revolving structure 4 of the vehicle body 1, and the fixed portion of the vertical boom 8 can be pivoted up and down in the revolving frame 7 in an upright posture and a fall posture. The vertical boom 8 is connected to the fixed portion of the vertical boom 8 and the hoisting cylinder 15 is connected across the revo frame 7, and the vertical boom side bracket 16 is attached to the first wall 11a in the front-rear direction of the movable boom 11 of the vertical boom 8 in the width direction. The vertical boom side bracket 16 is formed with one side pin hole 17 and the other side pin hole 18 on both sides in the longitudinal direction, and the horizontal boom side bracket 23 is fixed to the support frame 12. One side pin hole 24 and the other side pin hole 25 are formed on both sides in the longitudinal direction of the side bracket 23, and the pin 2 is extended between the one side pin hole 24 and the other side pin hole 18 of the vertical boom side bracket 16. Is fitted to make the support frame 12 rotatable in the width direction, the horizontal boom 13 is connected to the support frame 12 so as to be vertically rotatable, and the horizontal boom hoisting cylinder 27 extends between the horizontal boom 13 and the support frame 12. Are connected.
【０００７】[0007]
ブーム格納時に垂直ブーム８をほぼ水平姿勢とし、水平ブーム１３を垂直ブー ム８の幅方向一側壁に沿ってほぼ水平姿勢にできるから、垂直ブーム８と水平ブ ーム１３が幅方向に重なり合ってほぼ水平姿勢となって両ブームの上下方向寸法 が小さくなって運転者の前方視界が向上するし、クレーン作業時には支持フレー ム１２を回動することで水平ブーム１３を垂直ブーム８の前後方向一側壁に沿っ た姿勢にできるから、垂直ブーム８と水平ブーム１３が幅方向に一直線状となっ て両ブーム間のシーブにワイヤを一直線状に巻掛けできるからクレーン作業に悪 影響を及ぼすことがない。 When the boom is retracted, the vertical boom 8 can be placed in a substantially horizontal position, and the horizontal boom 13 can be placed in a substantially horizontal position along one side wall of the vertical boom 8 in the width direction, so that the vertical boom 8 and the horizontal boom 13 overlap in the width direction. As the boom is in a substantially horizontal position, the vertical dimension of both booms is reduced to improve the driver's forward field of view, and during crane work, the support frame 12 is rotated to move the horizontal boom 13 in the front-back direction of the vertical boom 8. Since the vertical boom 8 and the horizontal boom 13 are aligned in the width direction because the posture can be set along the side wall, the wire can be wound around the sheave between the booms in a straight line, which does not adversely affect the crane work. .
【０００８】[0008]
図１と図２と図３に示すように、車体１に前輪２と後輪３が設けられ、この車 体１の上面には旋回体４が旋回機構によって旋回可能に取付けてあり、この旋回 体４の車幅方向一側部に運転室５が取付けられ、他側部にはカバー体６が取付け られ、中間部にレボフレーム７が取付けてあり、このレボフレーム７に垂直ブー ム８の固定ブーム９がピン１０で車体１に対して垂直となった起立姿勢と車体１ に対してほぼ水平となった倒伏姿勢に亘って上下回動自在に連結され、その垂直 ブーム８の可動ブーム１１の先端部に支持フレーム１２が垂直ブーム幅方向に回 動自在に取付けてあり、この支持フレーム１２に水平ブーム１３の固定ブーム１ ４が上下回動自在に連結してある。 As shown in FIGS. 1, 2 and 3, a vehicle body 1 is provided with front wheels 2 and rear wheels 3, and a revolving structure 4 is mounted on the upper surface of the vehicle body 1 so as to be revolvable by a revolving mechanism. The driver's cab 5 is attached to one side of the body 4 in the vehicle width direction, the cover body 6 is attached to the other side, and the revo frame 7 is attached to the middle part. The fixed boom 9 is connected by a pin 10 so as to be vertically rotatable between an upright posture in which it is vertical to the vehicle body 1 and a fallen posture in which it is substantially horizontal with respect to the vehicle body 1. A support frame 12 is rotatably attached to the front end of the vertical boom width direction, and a fixed boom 14 of a horizontal boom 13 is connected to the support frame 12 so as to be vertically rotatable.
【０００９】 図２に示すように、前記レボフレーム７と垂直ブーム８の固定ブーム９に亘っ て起伏シリンダ１５が連結され、この起伏シリンダ１５を伸縮することで垂直ブ ーム８が車体１に対して垂直となった起立姿勢と車体１に対してほぼ水平となっ た倒伏姿勢に亘って上下回動できるようにしてある。As shown in FIG. 2, the hoisting cylinder 15 is connected to the revo frame 7 and the fixed boom 9 of the vertical boom 8, and the hoisting cylinder 15 is expanded and contracted so that the vertical boom 8 is attached to the vehicle body 1. On the other hand, it is possible to rotate up and down in a standing posture which is vertical and a lying posture which is substantially horizontal with respect to the vehicle body 1.
【００１０】 前記垂直ブーム８の可動ブーム１１は図４に示すように、前後方向に相対向し た一対の第１壁１１ａ，１１ａと幅方向に相対向した一対の第２壁１１ｂ，１１ ｂで矩形断面中空形状となり、その一方の第１壁１１ａに一対の垂直ブーム側ブ ラケット１６，１６が長手方向に間隔を置いて固定され、その垂直ブーム側ブラ ケット１６は幅方向に長尺となって一側ピン穴１７と他側ピン穴１８を有し、水 平ブーム１３の固定ブーム１４は前後方向に相対向した一対の第１壁１４ａ，１ ４ａと幅方向に相対向した一対の第２壁１４ｂ，１４ｂで矩形断面中空形状とな り、その第２壁１４ｂは第１壁１４ａよりも突出している。As shown in FIG. 4, the movable boom 11 of the vertical boom 8 has a pair of first walls 11 a and 11 a facing each other in the front-rear direction and a pair of second walls 11 b and 11 b facing each other in the width direction. Has a hollow rectangular cross section, and a pair of vertical boom-side brackets 16, 16 are fixed to one of the first walls 11a at intervals in the longitudinal direction. The vertical boom-side bracket 16 is elongated in the width direction. It has one side pin hole 17 and the other side pin hole 18, and the fixed boom 14 of the horizontal boom 13 has a pair of first walls 14a and 14a facing each other in the front-rear direction and a pair of widthwise facing each other. The second walls 14b, 14b have a hollow rectangular cross section, and the second wall 14b projects more than the first wall 14a.
【００１１】 前記支持フレーム１２は図４に示すように一側板１９と他側板２０と連結板２ １でコ字状となり、その一側板１９と他側板２０に水平ブーム１３の固定ブーム １４を構成する一対の第２壁１４ｂ，１４ｂがピン２２で上下回動自在に連結さ れ、その連結板２１の下面に一対の水平ブーム側ブラケット２３，２３が長手方 向に間隔を置いて固定され、この水平ブーム側ブラケット２３は幅方向に長尺と なって一側ピン穴２４と他側ピン穴２５を有し、その一側ピン穴２４と垂直ブー ム側ブラケット１６の他側ピン穴１８にピン２６が嵌合されて支持フレーム１２ は幅方向に回動自在となり、支持フレーム１２の連結板２１と固定ブーム１４の 一方の第１壁１４ａに亘って水平ブーム起伏シリンダ２７が連結してある。 前記支持フレーム１２の連結板２１にはシリンダ２８がブラケット２９で長手 方向に移動自在に支承され、そのシリンダチューブ２８ａとピストンロッド２８ ｂにロックピン３０が他側ピン穴１８と相対向して設けてある。 また、図３に示すように垂直ブーム８の可動ブーム１１と水平ブーム１３の固 定ブーム１４に亘って回動用シリンダ３１が連結されている。As shown in FIG. 4, the support frame 12 has a U-shape with one side plate 19, another side plate 20, and a connecting plate 21, and the one side plate 19 and the other side plate 20 constitute a fixed boom 14 of the horizontal boom 13. The pair of second walls 14b, 14b are vertically rotatably connected by a pin 22, and a pair of horizontal boom side brackets 23, 23 are fixed to the lower surface of the connecting plate 21 with a space in the longitudinal direction. The horizontal boom side bracket 23 is elongated in the width direction and has one side pin hole 24 and the other side pin hole 25. The one side pin hole 24 and the vertical boom side bracket 16 have the other side pin hole 18. The support frame 12 is rotatable in the width direction by fitting the pin 26, and the horizontal boom hoisting cylinder 27 is connected over the connecting plate 21 of the support frame 12 and the first wall 14a on one side of the fixed boom 14. . A cylinder 28 is movably supported by a bracket 29 on the connecting plate 21 of the support frame 12 in the longitudinal direction, and a lock pin 30 is provided on the cylinder tube 28a and a piston rod 28b of the cylinder plate 28a so as to face the other side pin hole 18. There is. Further, as shown in FIG. 3, a rotating cylinder 31 is connected between the movable boom 11 of the vertical boom 8 and the fixed boom 14 of the horizontal boom 13.
【００１２】 ブーム格納時には図１、図２、図３に示すように、起伏シリンダ１５を縮少し て垂直ブーム８を倒伏姿勢とすると共に、回動用シリンダ３１に縮少して支持フ レーム１２を可動フレーム１１の幅方向に隣接した位置として水平ブーム起伏シ リンダ２７を縮少することで水平ブーム１３を垂直ブーム８の幅方向一側壁に沿 ってほぼ水平にできる。この時支持フレーム１２を図示しないシリンダで移動す る安全ロックピン３２で回動しないようにロックする。 これによって、ブーム格納時に垂直ブーム８と水平ブーム１３が幅方向に重な り合うことで上下方向寸法が小さくなって運転室５内の運転者の前方視界が向上 する。When the boom is stored, as shown in FIGS. 1, 2 and 3, the hoisting cylinder 15 is contracted to bring the vertical boom 8 into a lying posture, and the support cylinder 12 is moved to the pivoting cylinder 31 by contracting it. By shrinking the horizontal boom hoisting cylinder 27 at a position adjacent to the width direction of the frame 11, the horizontal boom 13 can be made substantially horizontal along one side wall in the width direction of the vertical boom 8. At this time, the support frame 12 is locked by a safety lock pin 32 which is moved by a cylinder (not shown) so as not to rotate. As a result, the vertical boom 8 and the horizontal boom 13 overlap each other in the width direction when the boom is retracted, so that the vertical dimension is reduced and the forward visibility of the driver in the cab 5 is improved.
【００１３】 クレーン作業時には起伏シリンダ１５を伸長して図５に示すように垂直ブーム ８を垂直なる起立姿勢とし、安全ロックピン３２に抜き出すと共に、回動用シリ ンダ３１を伸長して支持フレーム１２をピン２６を中心として幅方向に回動して 水平ブーム側ブラケット２３の他側ピン穴２５を垂直ブーム側ブラケット１６の 一側ピン穴１７に合致し、シリンダ２８を伸長してロックピン３０をピンを嵌合 することで図６に示すように支持フレーム１２を垂直ブーム８の可動フレーム１ １の前後方向の一方の第１壁１１ａに固定する。During crane work, the hoisting cylinder 15 is extended so that the vertical boom 8 is in a vertical standing posture as shown in FIG. 5, the vertical boom 8 is pulled out to the safety lock pin 32, and the rotary cylinder 31 is extended to support the support frame 12. Rotate in the width direction around the pin 26, align the other side pin hole 25 of the horizontal boom side bracket 23 with the one side pin hole 17 of the vertical boom side bracket 16, and extend the cylinder 28 to pin the lock pin 30. 6, the supporting frame 12 is fixed to the first wall 11a of the movable frame 11 of the vertical boom 8 in the front-rear direction.
【００１４】 この状態で水平ブーム起伏シリンダ２７を伸長して支持フレーム１２に対して 水平ブーム１３を上方に回動して図７に示すようにほぼ水平姿勢とする。この時 、垂直ブーム８と水平ブーム１３は幅方向に直線状となるから、両ブームに取付 けたシーブに亘ってワイヤを直線状に巻掛けできる。In this state, the horizontal boom hoisting cylinder 27 is extended and the horizontal boom 13 is rotated upward with respect to the support frame 12 to be in a substantially horizontal posture as shown in FIG. At this time, since the vertical boom 8 and the horizontal boom 13 are linear in the width direction, the wire can be linearly wound over the sheaves attached to both booms.
【００１５】 図７に示すクレーン作業状態からブームを格納するには、シリンダ２８を縮少 してロックピン３０を抜き出し、回動用シリンダ３１を縮少して支持フレーム１ ２を９０度回転して固定ブーム１１の第２壁１１ｂ側に支持し、シリンダにより 安全ロックピン３２を嵌合して支持フレーム１２をロックし、水平ブーム起伏シ リンダ２７を縮少して水平ブーム１３を下方に回動することで垂直ブーム８の幅 方向に重なり合せ、その後に起伏シリンダ１５を縮少して垂直ブーム８とともに 水平ブーム１３を下方に回動してほぼ水平姿勢とすれば良い。In order to retract the boom from the crane operation state shown in FIG. 7, the cylinder 28 is contracted, the lock pin 30 is pulled out, the rotation cylinder 31 is contracted, and the support frame 12 is rotated by 90 degrees to be fixed. The boom 11 is supported on the second wall 11b side, the safety lock pin 32 is fitted by a cylinder to lock the support frame 12, and the horizontal boom hoisting cylinder 27 is contracted to rotate the horizontal boom 13 downward. Then, the vertical boom 8 is overlapped in the width direction, and then the hoisting cylinder 15 is contracted to rotate the horizontal boom 13 together with the vertical boom 8 downward to be in a substantially horizontal posture.
【００１６】 このように、垂直ブーム８を起立姿勢とした状態で水平ブーム１３を格納姿勢 とクレーン作業姿勢に移動できるから、狭いスペースでの操作が可能となる。As described above, since the horizontal boom 13 can be moved to the retracted posture and the crane working posture while the vertical boom 8 is in the standing posture, the operation can be performed in a narrow space.
【００１７】[0017]
ブーム格納時に垂直ブーム８をほぼ水平姿勢とし、水平ブーム１３を垂直ブー ム８の幅方向一側壁に沿ってほぼ水平姿勢にできるから、垂直ブーム８と水平ブ ーム１３が幅方向に重なり合ってほぼ水平姿勢となって両ブームの上下方向寸法 が小さくなって運転者の前方視界が向上する。 クレーン作業時には支持フレーム１２を回動することで水平ブーム１３を垂直 ブーム８の前後方向一側壁に沿った姿勢にできるから、垂直ブーム８と水平ブー ム１３が幅方向に一直線状となって両ブーム間のシーブにワイヤを一直線状に巻 掛けできるからクレーン作業に悪影響を及ぼすことがない。 When the boom is retracted, the vertical boom 8 can be placed in a substantially horizontal position, and the horizontal boom 13 can be placed in a substantially horizontal position along one side wall of the vertical boom 8 in the width direction, so that the vertical boom 8 and the horizontal boom 13 overlap in the width direction. The vertical position of both booms is reduced and the driver's forward visibility is improved. During crane work, by rotating the support frame 12, the horizontal boom 13 can be positioned along one side wall of the vertical boom 8 in the front-rear direction, so that the vertical boom 8 and the horizontal boom 13 form a straight line in the width direction. Since the wire can be wound around the sheave between the booms in a straight line, the crane work will not be adversely affected.
【図１】移動式クレーン車の全体概略斜視図である。FIG. 1 is an overall schematic perspective view of a mobile crane vehicle.
【図２】移動式クレーン車の全体側面図である。FIG. 2 is an overall side view of a mobile crane vehicle.
【図３】移動式クレーン車のブーム部分の正面図であ
る。FIG. 3 is a front view of a boom portion of a mobile crane vehicle.
【図４】水平ブーム取付部の斜視図である。FIG. 4 is a perspective view of a horizontal boom mounting portion.
【図５】ブーム動作説明図である。FIG. 5 is an explanatory diagram of a boom operation.
【図６】ブーム動作説明図である。FIG. 6 is an explanatory diagram of a boom operation.
【図７】ブーム動作説明図である。FIG. 7 is an explanatory diagram of a boom operation.
１…車体、４…旋回体、７…レボフレーム、８…垂直ブ
ーム、１１…可動ブーム、１２…支持フレーム、１３…
水平ブーム、１４…固定ブーム、１５…起伏シリンダ、
１６…垂直ブーム側ブラケット、１７…一側ピン穴、１
８…他側ピン穴、１９…一側板、２０…他側板、２１…
連結板、２３…水平ブーム側ブラケット、２４…一側ピ
ン穴、２５…他側ピン穴、２６…連結ピン、２７…水平
ブーム起伏シリンダ。DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 4 ... Revolving structure, 7 ... Revo frame, 8 ... Vertical boom, 11 ... Movable boom, 12 ... Support frame, 13 ...
Horizontal boom, 14 ... Fixed boom, 15 ... Elevating cylinder,
16 ... Vertical boom side bracket, 17 ... One side pin hole, 1
8 ... other side pin hole, 19 ... one side plate, 20 ... other side plate, 21 ...
Connection plate, 23 ... Horizontal boom side bracket, 24 ... One side pin hole, 25 ... Other side pin hole, 26 ... Connection pin, 27 ... Horizontal boom hoisting cylinder.
Claims (2)
付け、このレボフレーム７に垂直ブーム８の固定部を起
立姿勢と倒伏姿勢に上下回動自在に連結し、この垂直ブ
ーム８の固定部とレボフレーム７に亘って起伏シリンダ
１５を連結し、 前記垂直ブーム８の可動部に支持フレーム１２を、可動
部の前後方向一側壁に支持された第１位置と可動部の幅
方向一側壁に支持された第２位置に亘って可動部幅方向
に回動自在に取付け、この支持フレーム１２に水平ブー
ム１３の固定部を上下回動自在に連結し、この水平ブー
ム１３の固定部と支持フレーム１２に亘って水平ブーム
起伏シリンダ２７を連結したことを特徴とする移動式ク
レーン車の折曲ブーム。1. A revolving frame 7 is attached to a revolving structure 4 of a vehicle body 1, a fixing portion of a vertical boom 8 is connected to the revolving frame 7 so as to be vertically rotatable in an upright posture and a fall posture, and the vertical boom 8 is fixed. And a revolving frame 7, a hoisting cylinder 15 is connected, and a supporting frame 12 is supported by a movable part of the vertical boom 8 at a first position supported by one side wall in the front-rear direction of the movable part and one side wall in the width direction of the movable part. Is mounted rotatably in the width direction of the movable portion over a second position supported by the support frame 12, and the fixed portion of the horizontal boom 13 is rotatably connected to the support frame 12 so as to support the fixed portion of the horizontal boom 13. A folding boom for a mobile crane, wherein a horizontal boom hoisting cylinder 27 is connected across the frame 12.
向の第１壁１１ａに垂直ブーム側ブラケット１６を幅方
向に亘って固着し、この垂直ブーム側ブラケット１６に
長手方向両側に一側ピン穴１７と他側ピン穴１８を形成
し、 前記支持フレーム１２に水平ブーム側ブラケット２３を
固着し、この水平ブーム側ブラケット２３の長手方向両
側に一側ピン穴２４と他側ピン穴２５を形成し、この一
側ピン穴２４と前記垂直ブーム側ブラケット１６の他側
ピン穴１８に亘ってピン２６を嵌合して支持フレーム１
２を幅方向に回動自在とした請求項１記載の移動式クレ
ーン車の折曲ブーム。2. A vertical boom side bracket 16 is fixed to the first wall 11a of the movable boom 11 of the vertical boom 8 in the front-rear direction across the width direction, and the vertical boom side bracket 16 has one side pin holes on both sides in the longitudinal direction. 17 and the other side pin hole 18 are formed, the horizontal boom side bracket 23 is fixed to the support frame 12, and one side pin hole 24 and the other side pin hole 25 are formed on both sides in the longitudinal direction of the horizontal boom side bracket 23. The support frame 1 is formed by fitting the pin 26 between the one side pin hole 24 and the other side pin hole 18 of the vertical boom side bracket 16.
2. The folding boom for a mobile crane as claimed in claim 1, wherein 2 is rotatable in the width direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992091512U JP2585667Y2 (en) | 1992-12-17 | 1992-12-17 | Mobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992091512U JP2585667Y2 (en) | 1992-12-17 | 1992-12-17 | Mobile crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0649481U true JPH0649481U (en) | 1994-07-08 |
| JP2585667Y2 JP2585667Y2 (en) | 1998-11-25 |
Family
ID=14028465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992091512U Expired - Fee Related JP2585667Y2 (en) | 1992-12-17 | 1992-12-17 | Mobile crane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585667Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6162788U (en) * | 1984-09-27 | 1986-04-28 | ||
| JPS6341092U (en) * | 1986-09-02 | 1988-03-17 | ||
| JPH04112887U (en) * | 1991-03-18 | 1992-10-01 | 株式会社タダノ | Jib rotation device for crane with jib |
-
1992
- 1992-12-17 JP JP1992091512U patent/JP2585667Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6162788U (en) * | 1984-09-27 | 1986-04-28 | ||
| JPS6341092U (en) * | 1986-09-02 | 1988-03-17 | ||
| JPH04112887U (en) * | 1991-03-18 | 1992-10-01 | 株式会社タダノ | Jib rotation device for crane with jib |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2585667Y2 (en) | 1998-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0649481U (en) | Bending boom of mobile crane | |
| JP3241632B2 (en) | Outrigger storage locking device | |
| JPS585337B2 (en) | Mobile excavation machine with grab bucket device | |
| JPS597634B2 (en) | crane truck | |
| JP3001176B2 (en) | Aerial work vehicle | |
| JPH0724388Y2 (en) | Aerial work vehicle | |
| JPH0930778A (en) | Jib tensioner in jib crane truck | |
| JPH0649480U (en) | Mobile boom crane folding boom | |
| JP3597922B2 (en) | Self-propelled crane | |
| JPH0141803Y2 (en) | ||
| JPH0218074Y2 (en) | ||
| JPH0619416Y2 (en) | Outrigger equipment for construction machinery | |
| JPS58565Y2 (en) | Work vehicle with variable wheel width | |
| JP3640323B2 (en) | Crane jib overhang, storage method and apparatus | |
| JP3442890B2 (en) | Self-propelled mobile crane jib | |
| JP2000086186A (en) | Structure of rotating frame of high lift work vehicle | |
| JPH0340861Y2 (en) | ||
| JP3690965B2 (en) | Aerial work platform | |
| JPH0644948Y2 (en) | Lifting device for aerial work vehicles | |
| JP4447362B2 (en) | Auxiliary jib device for wheel crane | |
| JP2562916Y2 (en) | Aerial work vehicle | |
| JPH0628553Y2 (en) | Aerial work vehicle | |
| JP2579397Y2 (en) | Aerial work vehicle | |
| JP3658116B2 (en) | Jib overhang storage mechanism of self-propelled crane | |
| JPS6214477B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |