JPS6327574U - - Google Patents
Info
- Publication number
- JPS6327574U JPS6327574U JP12192686U JP12192686U JPS6327574U JP S6327574 U JPS6327574 U JP S6327574U JP 12192686 U JP12192686 U JP 12192686U JP 12192686 U JP12192686 U JP 12192686U JP S6327574 U JPS6327574 U JP S6327574U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- solenoid
- shift cylinder
- solenoid valve
- swing bracket
- 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
- 238000010276 construction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Description
第１図は本考案旋回縮小装置の油圧回路、電気
回路および構成図、第２図および第３図は本考案
装置を装備した油圧シヨベルの全体側面図、第４
図は本考案の他の実施例側面図、第５図および第
６図は従来技術の油圧シヨベルの全体側面図であ
る。
３ａ，３ｂ，３′……旋回フレーム、６……ブ
ーム、７……ブームシリンダ、１６，４５……揺
動ブラケツト、２０……シフト用シリンダ、２１
……電磁弁、２４……リミツトスイツチ。
Figure 1 is a hydraulic circuit, electric circuit, and configuration diagram of the swing reduction device of the present invention, Figures 2 and 3 are overall side views of a hydraulic excavator equipped with the device of the present invention, and Figure 4
This figure is a side view of another embodiment of the present invention, and FIGS. 5 and 6 are overall side views of a conventional hydraulic excavator. 3a, 3b, 3'... Rotating frame, 6... Boom, 7... Boom cylinder, 16, 45... Rocking bracket, 20... Shift cylinder, 21
...Solenoid valve, 24...Limit switch.
Claims (1)
を装着した建設機械において、上部旋回体の旋回
フレーム前部に揺動ブラケツトを回動自在に枢着
し、かつその揺動ブラケツト下端部にブームシリ
ンダ基端部を回動自在に枢着し、また上記旋回フ
レームにシフト用シリンダを設け、そのピストン
ロツド側ボスを上記揺動ブラケツトの一端に枢着
し、かつブーム用切換弁とシフト用シリンダとの
連通油路を電磁弁を介して接続せしめ、一方、ブ
ーム基端部取付付近の旋回フレームにリミツトス
イツチを配置して、そのスイツチおよびソレノイ
ドを有する電気回路を設け、そのソレノイドと上
記電磁弁の電磁作動部とを連結し、ブーム上げ作
動時にリミツトスイツチにより電磁弁を切換作動
可能とするとともに、上記シフト用シリンダを伸
長作動可能に構成したことを特徴とする建設機械
の旋回縮小装置。 In a construction machine in which a work attachment is attached to the front part of the upper revolving body, a swing bracket is rotatably pivoted to the front part of the revolving frame of the upper revolving structure, and the base end of the boom cylinder is attached to the lower end of the swing bracket. A shift cylinder is provided on the revolving frame, the piston rod side boss of the shift cylinder is pivotally connected to one end of the swing bracket, and a communication oil passage between the boom switching valve and the shift cylinder is provided. are connected via a solenoid valve, and on the other hand, a limit switch is arranged on the revolving frame near the attachment of the base end of the boom, an electric circuit having the switch and a solenoid is provided, and the solenoid and the solenoid actuating part of the solenoid valve are connected. A swing reduction device for construction machinery, characterized in that the solenoid valve can be switched by a limit switch when the boom is raised, and the shift cylinder can be extended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12192686U JPS6327574U (en) | 1986-08-07 | 1986-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12192686U JPS6327574U (en) | 1986-08-07 | 1986-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6327574U true JPS6327574U (en) | 1988-02-23 |
Family
ID=31011644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12192686U Pending JPS6327574U (en) | 1986-08-07 | 1986-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6327574U (en) |
-
1986
- 1986-08-07 JP JP12192686U patent/JPS6327574U/ja active Pending