JPS6314654U - - Google Patents
Info
- Publication number
- JPS6314654U JPS6314654U JP10662586U JP10662586U JPS6314654U JP S6314654 U JPS6314654 U JP S6314654U JP 10662586 U JP10662586 U JP 10662586U JP 10662586 U JP10662586 U JP 10662586U JP S6314654 U JPS6314654 U JP S6314654U
- Authority
- JP
- Japan
- Prior art keywords
- boss
- boom
- boss flange
- webs
- flange portions
- 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
- Component Parts Of Construction Machinery (AREA)
Description
第１図ないし第５図は本考案の第１の実施例を
示し、第１図は油圧シヨベル用ブームの全体図、
第２図は第１図中の要部拡大図、第３図は第２図
中の矢示―方向断面図、第４図はブームを俯
動させた状態で示す油圧シヨベルの外観説明図、
第５図は油圧シヨベルを運搬する状態で示す外観
説明図、第６図は第２の実施例を示す第２図と同
様の要部拡大図、第７図ないし第９図は従来技術
を示し、第７図は油圧シヨベルの全体図、第８図
は第７図中に示すブームの要部拡大図、第９図は
第８図中の矢示―方向断面図、第１０図は他
の従来技術を示す第８図と同様の要部拡大図であ
る。
５…ブーム、８…ブームシリンダ、１１…ウエ
ブ、１２…上フランジ、１３…下フランジ、２１
，３２…ボス取付穴、２２，３１…ボス、２２Ａ
，３１Ａ…ボスフランジ部、２２Ａ１…円弧面部
、２２Ａ２…平坦面部、２２Ｂ，３１Ｂ…ピン穴
。
1 to 5 show a first embodiment of the present invention, and FIG. 1 is an overall view of a boom for a hydraulic excavator;
Fig. 2 is an enlarged view of the main parts in Fig. 1, Fig. 3 is a cross-sectional view in the direction of the arrow in Fig. 2, Fig. 4 is an explanatory view of the external appearance of the hydraulic excavator with the boom tilted down,
Fig. 5 is an explanatory view of the external appearance of the hydraulic excavator in a state of transportation, Fig. 6 is an enlarged view of the main parts similar to Fig. 2 showing the second embodiment, and Figs. 7 to 9 show the prior art. , Fig. 7 is an overall view of the hydraulic excavator, Fig. 8 is an enlarged view of the main parts of the boom shown in Fig. 7, Fig. 9 is a cross-sectional view in the direction indicated by the arrow in Fig. 8, and Fig. 10 is an enlarged view of the main parts of the boom shown in Fig. 7. It is an enlarged view of the main part similar to FIG. 8 showing the prior art. 5...Boom, 8...Boom cylinder, 11...Web, 12...Upper flange, 13...Lower flange, 21
, 32...Boss mounting hole, 22, 31...Boss, 22A
, 31A... Boss flange portion, 22A 1 ... Arc surface portion, 22A 2 ... Flat surface portion, 22B, 31B... Pin hole.
Claims (1)
、右のウエブと、該各ウエブの上、下端面側にそ
れぞれ接合された上、下のフランジと、連結ピン
が挿嵌されるピン穴を有し、左、右のボスフラン
ジ部が前記各ウエブのボス取付穴に接合されたボ
スとからなる油圧シヨベル用ブームにおいて、前
記ボスのピン穴を上フランジ側に接近させるべく
、前記左、右のボスフランジ部を該ピン穴に対し
て非同心円形状に形成し、該各ボスフランジ部の
全周を前記左、右のウエブで取囲むようにして接
合すべく、前記各ボス取付穴を各ボスフランジ部
と対応する形状に穿設したことを特徴とする油圧
シヨベル用ブーム。 Left and right webs with boss mounting holes for the boom cylinder, upper and lower flanges joined to the upper and lower end surfaces of each web, respectively, and pin holes into which connecting pins are inserted. In a boom for a hydraulic excavator, in which the left and right boss flange portions are comprised of bosses joined to the boss attachment holes of each of the webs, the left and right boss flange portions are connected to The boss flange portions are formed in a non-concentric circular shape with respect to the pin holes, and each boss flange portion is connected so that the entire circumference of each boss flange portion is surrounded by the left and right webs. A boom for a hydraulic excavator characterized by being bored in a shape corresponding to that of the boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10662586U JPS6314654U (en) | 1986-07-11 | 1986-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10662586U JPS6314654U (en) | 1986-07-11 | 1986-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6314654U true JPS6314654U (en) | 1988-01-30 |
Family
ID=30982158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10662586U Pending JPS6314654U (en) | 1986-07-11 | 1986-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6314654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013147794A (en) * | 2012-01-17 | 2013-08-01 | Hitachi Constr Mach Co Ltd | Arm for construction machine |
-
1986
- 1986-07-11 JP JP10662586U patent/JPS6314654U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013147794A (en) * | 2012-01-17 | 2013-08-01 | Hitachi Constr Mach Co Ltd | Arm for construction machine |
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