JP2017001840A - Expansion boom mounting structure - Google Patents

Expansion boom mounting structure Download PDF

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Publication number
JP2017001840A
JP2017001840A JP2015118617A JP2015118617A JP2017001840A JP 2017001840 A JP2017001840 A JP 2017001840A JP 2015118617 A JP2015118617 A JP 2015118617A JP 2015118617 A JP2015118617 A JP 2015118617A JP 2017001840 A JP2017001840 A JP 2017001840A
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Prior art keywords
boom
base
bracket
width
mounting structure
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JP2015118617A
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JP6531505B2 (en
Inventor
正裕 石井
Masahiro Ishii
石井　　正裕
征男 樫原
Masao Kashihara
征男 樫原
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Tadano Ltd
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Tadano Ltd
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Application filed by Tadano Ltd filed Critical Tadano Ltd
Priority to JP2015118617A priority Critical patent/JP6531505B2/en
Priority to KR1020177032309A priority patent/KR101942213B1/en
Priority to PCT/JP2016/066762 priority patent/WO2016199721A1/en
Priority to CN201680029045.9A priority patent/CN107735351B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear

Abstract

PROBLEM TO BE SOLVED: To provide an expansion boom mounting structure that can increase a width of a base boom and prevent interference between the base boom and an intermediate boom.SOLUTION: The expansion boom mounting structure is configured so that a rear part of a base boom 110 of an expansion boom 100 of a crane is held with a bracket 120 and the base boom 110 is mounted using the bracket 120 to be able to rise and fall relative to a turning post. The bracket 120 comprises contact plate parts 130 and 130 which are joined to wall parts 110A and 110B at both sides of the rear part of the base boom 110. Each contact plate part 130 has a pair of base part pieces 132 and 132 which are held between a pair of holding parts opposing to each other of the turning post to be able to rise and fall. A width W1 between contact plate parts 130 and 130 of a part other than base part pieces 132 is set larger than a width W2 between the base part pieces 132 and 132.SELECTED DRAWING: Figure 2

Description

この発明は、伸縮ブームを旋回ポストに起伏可能に取り付ける伸縮ブームの取付構造に関する。   The present invention relates to a telescopic boom mounting structure for mounting an extendable boom to a swing post so that it can be raised and lowered.

従来から、クレーンの基台に旋回自在に設けた旋回ポストに、ベースブームの内側に複数の中間ブームを入れ子状に重ねて伸縮可能にした伸縮ブームを起伏可能に取り付ける伸縮ブームの取付構造が知られている（特許文献１参照）。   Conventionally, a telescopic boom mounting structure has been known in which a telescopic boom that can be telescopically mounted by nesting a plurality of intermediate booms nested inside a base boom on a pivot post that is pivotably provided on the base of a crane is known. (See Patent Document 1).

係る伸縮ブームの取付構造は、旋回ポストに相対向した一対の保持板部を設け、伸縮ブームのベースブームの後部を前記保持板部間に軸部材を介して取り付け、この軸部材によってベースブームを旋回ポストに対して起伏可能にしたものである。   The telescopic boom mounting structure is provided with a pair of holding plate portions opposed to the turning post, and the rear portion of the base boom of the telescopic boom is mounted between the holding plate portions via a shaft member, and the base boom is mounted by the shaft member. The swing post can be raised and lowered.

特開２００１−９７６７３号公報JP 2001-97673 A

ところで、伸縮ブームは、ベースブームの側壁部と中間ブームの側壁部との間の隙間が狭く設定され、ベースブームなどは溶接の熱などにより側壁部に歪が発生していることにより、中間ブームの側壁部とベースブームの側壁部とが干渉してしまう虞があった。この問題を解消するためには、ベースブームの幅を大きくすればよいが、ベースブームの幅は旋回ポストの保持板部間の幅に合わせて設定されているため、ベースブームの幅を大きくしようとすると、旋回ポストの一対の保持板部間の幅を大きくした旋回ポストに変更する必要があった。   By the way, in the telescopic boom, the gap between the side wall portion of the base boom and the side wall portion of the intermediate boom is set narrow, and the base boom or the like is distorted in the side wall portion due to heat of welding or the like. There was a possibility that the side wall portion of the base and the side wall portion of the base boom would interfere with each other. To solve this problem, the width of the base boom can be increased. However, since the width of the base boom is set according to the width between the holding plates of the swivel post, try to increase the width of the base boom. Then, it was necessary to change to a swivel post having a larger width between the pair of holding plate portions of the swivel post.

この発明の目的は、既存の旋回ポストを変更せずにベースブームと中間ブームとの干渉を防止することのできる伸縮ブームの取付構造を提供することにある。   It is an object of the present invention to provide a telescopic boom mounting structure that can prevent interference between a base boom and an intermediate boom without changing an existing turning post.

請求項１の発明は、作業機の伸縮ブームのベースブームの後部をブラケットによって保持するとともに、該ブラケットによって前記ベースブームを旋回ポストに対して起伏可能に取り付ける伸縮ブームの取付構造であって、
前記ブラケットは、前記ベースブームの後部の両側壁部に接合される一対の当接板部を有し、
この各当接板部は、前記旋回ポストの相対向した一対の保持部間に起伏可能に保持される基部片を有し、
この基部片におけるブラケットの幅に対して、この基部片以外のブラケットの幅を大きく設定したことを特徴とする。 The invention of claim 1 is a telescopic boom mounting structure in which the rear portion of the base boom of the telescopic boom of the work implement is held by a bracket, and the base boom is mounted to the swing post by the bracket so as to be raised and lowered.
The bracket has a pair of contact plate portions joined to both side wall portions of the rear portion of the base boom,
Each of the contact plate portions has a base piece that can be held up and down between a pair of opposing holding portions of the swivel post,
The width of the bracket other than the base piece is set larger than the width of the bracket of the base piece.

この発明によれば、旋回ポストを変更せずにベースブームの幅を大きくでき、ベースブームと中間ブームとの干渉を防止することができる。   According to the present invention, the width of the base boom can be increased without changing the turning post, and interference between the base boom and the intermediate boom can be prevented.

この発明に係る伸縮ブームの取付構造を適用したトラッククレーンの外観を示した側面図である。It is the side view which showed the external appearance of the truck crane to which the attachment structure of the telescopic boom which concerns on this invention was applied. この発明に係る伸縮ブームの取付構造のブラケットとベースブームを示した斜視図である。It is the perspective view which showed the bracket and base boom of the attachment structure of the telescopic boom which concern on this invention. この発明に係る伸縮ブームの取付構造を示した斜視図である。It is the perspective view which showed the attachment structure of the telescopic boom which concerns on this invention. 第２実施例のブーム構造を示した斜視図である。It is the perspective view which showed the boom structure of 2nd Example.

以下、この発明に係る伸縮ブームの取付構造の実施の形態である実施例を図面に基づいて説明する。   Hereinafter, an embodiment which is an embodiment of a telescopic boom mounting structure according to the present invention will be described with reference to the drawings.

［第１実施例］
図１は、伸縮ブームの取付構造を適用した作業機としてトラッククレーン(クレーン)１０を示す。 [First embodiment]
FIG. 1 shows a truck crane (crane) 10 as a working machine to which a telescopic boom mounting structure is applied.

このトラッククレーン１０は、前後方向に延び且つ前輪１１と第１，第２後輪１２,１３を設けたメインフレーム１４と、このメインフレーム１４の上に旋回可能に設けた旋回ポスト２０と、この旋回ポスト２０の上部に起伏可能に設けた伸縮ブーム１００と、この伸縮ブーム１００を起伏させる起伏用シリンダ１５と、メインフレーム１４の両サイド側に旋回ポストの位置（前後方向に対する位置）の近傍に設けた一対のアウトリガ装置３０（一方のみを図示）と、メインフレーム１４上に旋回ポスト２０の前側に設けたキャビン１６と、その旋回ポスト２０の後側に設けた荷台１７等とを備えている。
［旋回ポスト］
旋回ポスト２０は、伸縮ブーム１００を起伏可能に保持する相対向した一対の保持板部（保持部）２１（片方のみ図示）を有している。また、旋回ポスト２０内には、図示しないウインチ及び減速機が配置されており、吊荷を吊るワイヤ(図示せず)を巻き上げたり繰り出したりするようになっている。
［伸縮ブーム］
伸縮ブーム１００は、ベースブーム１１０と中間ブーム１１１,１１２と先端ブーム１１３とを有し、この順序でベースブーム１１０内に外側から内側に入れ子式に組み合わされて構成されている。また、伸縮ブーム１００は伸縮シリンダ(図示せず)によって伸縮するようになっている。 The truck crane 10 includes a main frame 14 that extends in the front-rear direction and has a front wheel 11 and first and second rear wheels 12 and 13, a turning post 20 that is turnable on the main frame 14, The telescopic boom 100 provided at the upper part of the swing post 20, the hoisting cylinder 15 for lifting the telescopic boom 100, and the position of the swing post (position with respect to the front-rear direction) on both sides of the main frame 14. A pair of provided outrigger devices 30 (only one of them is shown), a cabin 16 provided on the main frame 14 on the front side of the turning post 20, a loading platform 17 provided on the rear side of the turning post 20, and the like are provided. .
[Swivel post]
The swivel post 20 has a pair of opposing holding plate portions (holding portions) 21 (only one of them is shown) that holds the telescopic boom 100 so that it can be raised and lowered. In addition, a winch and a speed reducer (not shown) are arranged in the turning post 20, and a wire (not shown) for suspending a suspended load is wound up or fed out.
[Extensible boom]
The telescopic boom 100 includes a base boom 110, intermediate booms 111 and 112, and a tip boom 113, and is configured by being nested in the base boom 110 from the outside to the inside in this order. The telescopic boom 100 is expanded and contracted by an expansion cylinder (not shown).

図２及び図２Ａは、伸縮ブーム１００を旋回ポストへ取り付けるための伸縮ブーム１００の取付構造を示す。   2 and 2A show a mounting structure of the telescopic boom 100 for mounting the telescopic boom 100 to the turning post.

図２及び図２Ａに示すように、ベースブーム１１０の後部にブラケット１２０が取り付けられており、このブラケット１２０を介してベースブーム１１０が旋回ポスト２０に対して起伏可能に取り付けられる。
［ブラケット］
ブラケット１２０は、図２に示すように、ベースブーム１１０の両側壁部１１０Ａ,１１０Ｂに当接される一対の当接板部１３０,１３０と、この一対の当接板部１３０,１３０の後部上方から後端間に配置され、各当接板部１３０を接続する端板１４０とを有している。 As shown in FIGS. 2 and 2A, a bracket 120 is attached to the rear portion of the base boom 110, and the base boom 110 is attached to the swing post 20 via the bracket 120 so as to be raised and lowered.
[bracket]
As shown in FIG. 2, the bracket 120 includes a pair of contact plate portions 130 and 130 that are in contact with both side wall portions 110 </ b> A and 110 </ b> B of the base boom 110, and a rear upper portion of the pair of contact plate portions 130 and 130. And an end plate 140 which is disposed between the rear ends and connects the contact plate portions 130.

各当接板部１３０は、図２に示すように、ベースブーム１１０の側壁部１１０Ａに溶接された溶接領域を含む溶接領域部１３１と、この溶接領域部１３１の後部に設けられるとともにベースブーム１１０の後端の位置から後方へ突出した基部片１３２とを有している。この基部片１３２と溶接領域部１３１との境界は段部１３３となっている。   As shown in FIG. 2, each abutment plate portion 130 is provided at a welding region portion 131 including a welding region welded to the side wall portion 110 </ b> A of the base boom 110 and a rear portion of the welding region portion 131 and the base boom 110. And a base piece 132 protruding rearward from the rear end position. The boundary between the base piece 132 and the welding region 131 is a stepped portion 133.

そして、ブラケット１２０の基部片１３２,１３２間の幅Ｗ２は、溶接領域部１３１,１３１間の幅Ｗ１より小さく設定されている。すなわち、基部片１３２以外の部分の当接板部１３０,１３０間の幅Ｗ１が基部片１３２,１３２間の幅Ｗ２より大きく設定されている。つまり、基部片１３２におけるブラケット１２０の幅Ｗ２に対して、この基部片１３２以外のブラケットの幅Ｗ１が大きく設定されている。   And the width W2 between the base piece 132,132 of the bracket 120 is set smaller than the width W1 between the welding area | region parts 131,131. That is, the width W1 between the contact plate portions 130 and 130 other than the base piece 132 is set larger than the width W2 between the base pieces 132 and 132. That is, the width W1 of the bracket other than the base piece 132 is set larger than the width W2 of the bracket 120 in the base piece 132.

ブラケット１２０の溶接領域部１３１は、ベースブーム１１０の下面１１０Ｃから下方に突出したＶ字形の突出片１３１Ａを有している。この突出片１３１Ａの最下部に軸穴１２９が形成され、突出片１３１Ａの稜線（縁部）１２２Ａ,１２２Ｂに沿って補強用のフランジ１２７,１２８が形成されている。また、溶接領域部１３１の中央部には溶接強度を確保するための開口部１２６が形成されている。   The welded region 131 of the bracket 120 has a V-shaped protruding piece 131 </ b> A that protrudes downward from the lower surface 110 </ b> C of the base boom 110. A shaft hole 129 is formed at the lowermost portion of the protruding piece 131A, and reinforcing flanges 127 and 128 are formed along ridgelines (edges) 122A and 122B of the protruding piece 131A. In addition, an opening 126 for ensuring welding strength is formed at the center of the welding region 131.

基部片１３２には、図２Ａに示すように、伸縮ブーム１００を旋回ポスト２０の保持板部２１間に起伏自在に装着するための軸穴１２４と、伸縮ブーム１００の伸縮用シリンダの一端を固定する軸部材(図示せず)を装着するための軸穴１２５とが形成されている。   As shown in FIG. 2A, the base piece 132 is fixed with a shaft hole 124 for mounting the telescopic boom 100 between the holding plate portions 21 of the swivel post 20, and one end of the telescopic cylinder of the telescopic boom 100. A shaft hole 125 for mounting a shaft member (not shown) is formed.

ベースブーム１１０の側壁部１１０Ｂに接合される当接板部１３０も上記と同様な構成となっているので、その説明は省略する。
［伸縮ブームの取り付け］
伸縮ブーム１００のベースブーム１１０の後部の両側壁部１１０Ａ,１１０Ｂにブラケット１２０の溶接領域部１３１,１３１を溶接して、図２に示すように、ベースブーム１１０の後部にブラケット１２０を取り付ける。 Since the contact plate portion 130 joined to the side wall portion 110B of the base boom 110 has the same configuration as described above, the description thereof is omitted.
[Attaching the telescopic boom]
The welded region portions 131 and 131 of the bracket 120 are welded to both side wall portions 110A and 110B of the rear portion of the base boom 110 of the telescopic boom 100, and the bracket 120 is attached to the rear portion of the base boom 110 as shown in FIG.

この後、図２Ａに示すように、ブラケット１２０の基部片１３２,１３２を旋回ポスト２０の保持板部２１,２１間に挿入させるとともに、その基部片１３２,１３２の軸穴１２４,１２４に旋回ポスト２０の軸部材１５０を挿入させて、ブラケット１２０を旋回ポスト２０に取り付ける。   2A, the base piece 132, 132 of the bracket 120 is inserted between the holding plate parts 21, 21 of the turning post 20, and the turning post is inserted into the shaft holes 124, 124 of the base piece 132, 132. The bracket 120 is attached to the pivot post 20 by inserting the 20 shaft members 150.

また、起伏シリンダ１５（図１参照）の一端部をブラケット１２０に連結するために、ブラケット１２０の一方の溶接領域部１３１の軸穴１２９と、他方の溶接領域部１３１の図示しない突出片の軸穴とに軸部材(図示せず)を装着する。これにより、伸縮ブーム１００は起伏用シリンダ１５の伸縮動作によって軸部材１５０を中心にして起伏することになる。   Further, in order to connect one end portion of the undulating cylinder 15 (see FIG. 1) to the bracket 120, the shaft hole 129 of one welding region portion 131 of the bracket 120 and the shaft of a protruding piece (not shown) of the other welding region portion 131 are used. A shaft member (not shown) is attached to the hole. Accordingly, the telescopic boom 100 is raised and lowered around the shaft member 150 by the expansion and contraction operation of the hoisting cylinder 15.

ところで、図２に示すように、基部片１３２以外の部分の当接板部１３０,１３０間の幅Ｗ１が基部片１３２,１３２間の幅Ｗ２より大きく設定されていることにより、ベースブーム１１０の横方向の幅を大きくとることができ、ベースブーム１１０の側壁部１１０Ａ,１１０Ｂと中間ブーム１１１（図１参照）の側壁部(図示せず)との間の隙間を広くとることができる。このため、ベースブーム１１０及び中間ブーム１１１の側壁部に溶接等の熱による歪が発生していても、ベースブーム１１０と中間ブーム１１１との干渉を防止することができる。このため、厳密な歪取り処理を行わなくてもよいことになる。   By the way, as shown in FIG. 2, the width W1 between the contact plate portions 130, 130 other than the base piece 132 is set to be larger than the width W2 between the base pieces 132, 132. The width in the lateral direction can be increased, and a gap between the side wall portions 110A and 110B of the base boom 110 and the side wall portion (not shown) of the intermediate boom 111 (see FIG. 1) can be increased. For this reason, even if the distortion | strain by heat, such as welding, has generate | occur | produced in the side wall part of the base boom 110 and the intermediate boom 111, interference with the base boom 110 and the intermediate boom 111 can be prevented. For this reason, it is not necessary to perform strict distortion removal processing.

しかも、幅Ｗ２を従来の幅と同一に設定することにより、旋回ポスト２０を変更せずに既存のものが使用することができ、さらに、既存の起伏用の軸部材１５０を使用することができる。また、ベースブーム１１０の横方向の幅を大きくとることができることにより、伸縮ブーム１００の横方向の剛性を高めることができる。しかも、ベースブーム１１０の横方向の幅を大きくとることができることにより、多段ブームを構成し易いものとなる。   Moreover, by setting the width W2 to be the same as the conventional width, the existing one can be used without changing the swivel post 20, and the existing shaft member 150 for undulation can be used. . Further, since the lateral width of the base boom 110 can be increased, the lateral rigidity of the telescopic boom 100 can be increased. In addition, since the lateral width of the base boom 110 can be increased, a multi-stage boom can be easily configured.

なお、ブラケット１２０の各当接板部１３０は、１枚の板材からプレス成形により形成するが、２枚の板材を溶接して形成するようにしてもよい。
［第２実施例］
図３は第２実施例のブラケット２００を示す。このブラケット２００は、ベースブーム１１０の両側壁部１１０Ａ,１１０Ｂに接合される一対の当接板部２３０,２３０と、この一対の当接板部２３０,２３０の後部上方から後端間に配置され、各当接板部２３０を接続する端板２４０とを有している。 Each contact plate portion 130 of the bracket 120 is formed by press molding from one plate material, but may be formed by welding two plate materials.
[Second Embodiment]
FIG. 3 shows a bracket 200 of the second embodiment. The bracket 200 is disposed between a pair of contact plate portions 230 and 230 joined to both side wall portions 110A and 110B of the base boom 110, and between the rear upper portion and the rear end of the pair of contact plate portions 230 and 230. And an end plate 240 for connecting the contact plate portions 230.

各当接板部２３０は、ベースブーム１１０の側壁部１１０Ａに溶接される溶接領域部（当接部）２３１と、両溶接領域部２３１の後部に設けられるとともにベースブーム１１０の後端位置より後方へ突出した基部片２３２とを有している。   Each abutment plate portion 230 is provided at a rear portion of the welded portion (abutting portion) 231 welded to the side wall portion 110 </ b> A of the base boom 110 and the two welded region portions 231 and behind the rear end position of the base boom 110. And a base piece 232 protruding toward the bottom.

この基部片２３２と溶接領域部２３１との境界部２３３は、基部片２３２から溶接領域部２３１へいくにしたがって、境界部２３３の当接板部２３０,２３０間の幅Ｗ３が除々に大きくなるように設定されている。   In the boundary portion 233 between the base piece 232 and the welding region portion 231, the width W <b> 3 between the contact plate portions 230 and 230 of the boundary portion 233 gradually increases as going from the base piece 232 to the welding region portion 231. Is set to

すなわち、ブラケット２００は、図２に示すブラケット１２０の段部１３３を無くすようにしたものであり、この段部１３３を無くすことにより、段部１３３に発生する応力集中を無くすることができる。   That is, the bracket 200 is configured such that the stepped portion 133 of the bracket 120 shown in FIG. 2 is eliminated. By eliminating the stepped portion 133, stress concentration generated in the stepped portion 133 can be eliminated.

また、ブラケット２００の溶接領域部２３１,２３１間の幅Ｗ１は、第１実施例と同様に、基部片２３２,２３２間の幅Ｗ２より大きく設定されている。   Further, the width W1 between the welded region portions 231 and 231 of the bracket 200 is set larger than the width W2 between the base pieces 232 and 232 as in the first embodiment.

上記実施例は、いずれもブラケット１２０,２００の溶接領域部１３１,１３１、２３１,２３１間の幅Ｗ１を基部片１３２,１３２、２３２,２３２間の幅Ｗ２より大きく設定しているが、逆に、基部片１３２,１３２、２３２,２３２間の幅Ｗ２を溶接領域部１３１,１３１、２３１,２３１間の幅Ｗ１より狭く設定すれば、伸縮ブーム１００の横方向の剛性を保ったまま旋回ポスト２０の小型軽量化を図ることができる。   In any of the above embodiments, the width W1 between the welded regions 131, 131, 231, 231 of the brackets 120, 200 is set larger than the width W2 between the base pieces 132, 132, 232, 232. If the width W2 between the base pieces 132, 132, 232, 232 is set to be narrower than the width W1 between the welding region portions 131, 131, 231, 231, the turning post 20 while maintaining the lateral rigidity of the telescopic boom 100 is maintained. Can be reduced in size and weight.

また、上記実施例は、トラッククレーンの伸縮ブーム１００に伸縮ブームの取付構造を適用した場合について説明したが、これに限らず、高所作業車等の他の作業機の伸縮ブームに適用してもよい。   Moreover, although the said Example demonstrated the case where the attachment structure of a telescopic boom was applied to the telescopic boom 100 of a truck crane, it applies not only to this but to the telescopic boom of other working machines, such as an aerial work vehicle. Also good.

上記実施例は、上述のものに限定されるものではない。また、この発明は、発明を逸脱しない範囲で設計変更することは可能である。   The above embodiments are not limited to those described above. In addition, the design of the present invention can be changed without departing from the scope of the invention.

１０ トラッククレーン（作業機）
２０ 旋回ポスト
２１ 保持板部（保持部）
１００ 伸縮ブーム
１１０ ベースブーム
１１０Ａ 側壁部
１１０Ｂ 側壁部
１１１ 中間ブーム
１２０ ブラケット
１３０ 当接板部
１３１ 溶接領域部
１３２ 基部片
２００ ブラケット
２３０ 当接板部
２３１ 溶接領域部（当接部）
２３２ 基部片 10 Truck crane (work machine)
20 Rotating post 21 Holding plate part (holding part)
100 Telescopic boom 110 Base boom 110A Side wall part 110B Side wall part 111 Intermediate boom
120 Bracket 130 Abutting plate portion 131 Welding region portion 132 Base piece 200 Bracket 230 Abutting plate portion 231 Welding region portion (abutting portion)
232 base piece

Claims (2)

作業機の伸縮ブームのベースブームの後部をブラケットによって保持するとともに、該ブラケットによって前記ベースブームを旋回ポストに対して起伏可能に取り付ける伸縮ブームの取付構造であって、
前記ブラケットは、前記ベースブームの後部の両側壁部に接合される一対の当接板部を有し、
この各当接板部は、前記旋回ポストの相対向した一対の保持部間に起伏可能に保持される基部片を有し、
この基部片におけるブラケットの幅に対して、この基部片以外のブラケットの幅を大きく設定したことを特徴とする伸縮ブームの取付構造。 A telescopic boom mounting structure for holding a rear portion of a base boom of a telescopic boom of a work machine by a bracket and mounting the base boom to the swing post by the bracket so that the base boom can be raised and lowered.
The bracket has a pair of contact plate portions joined to both side wall portions of the rear portion of the base boom,
Each of the contact plate portions has a base piece that can be held up and down between a pair of opposing holding portions of the swivel post,
A telescopic boom mounting structure, wherein the width of the bracket other than the base piece is set larger than the width of the bracket of the base piece. 前記各当接板部は、前記ベースブームの側壁部に当接される当接部と、この当接部の後部に設けられた前記基部片とを有し、
前記基部片と当接部との境界部におけるブラケットの幅を、その基部片から当接部へいくにしたがって徐々に広くなるように設定したことを特徴とする請求項１に記載の伸縮ブームの取付構造。

Each of the contact plate portions includes a contact portion that is in contact with a side wall portion of the base boom, and the base piece provided at a rear portion of the contact portion,
2. The telescopic boom according to claim 1, wherein the width of the bracket at the boundary between the base piece and the contact portion is set to gradually increase from the base piece to the contact portion. Mounting structure.

JP2015118617A 2015-06-11 2015-06-11 Telescopic boom mounting structure Active JP6531505B2 (en)

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JP2015118617A JP6531505B2 (en) 2015-06-11 2015-06-11 Telescopic boom mounting structure
KR1020177032309A KR101942213B1 (en) 2015-06-11 2016-06-06 Mounting structure of new boom
PCT/JP2016/066762 WO2016199721A1 (en) 2015-06-11 2016-06-06 Telescopic boom mounting structure
CN201680029045.9A CN107735351B (en) 2015-06-11 2016-06-06 Mounting structure of telescopic crane boom

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Publication number Priority date Publication date Assignee Title
JP7463865B2 (en) 2020-06-08 2024-04-09 株式会社タダノ boom

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CN107735351B (en) 2019-12-31
WO2016199721A1 (en) 2016-12-15

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