JPS635056U - - Google Patents
Info
- Publication number
- JPS635056U JPS635056U JP9850186U JP9850186U JPS635056U JP S635056 U JPS635056 U JP S635056U JP 9850186 U JP9850186 U JP 9850186U JP 9850186 U JP9850186 U JP 9850186U JP S635056 U JPS635056 U JP S635056U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- selector valve
- revolving body
- brake mechanism
- parking
- 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
- 239000013642 negative control Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案ブレーキ装置の油圧回路図、第
２図は本考案の他の実施例油圧回路図、第３図は
従来技術の油圧回路図、第４図は従来技術の他の
実施例油圧回路図である。
１……ブレーキ機構、２……旋回モータ、５，
５′……旋回切換弁、６，６′……電磁弁、７…
…油圧力作用部、１０，４６……電気回路、１７
……セレクタバルブ、１９，１９′……切換弁、
２０……センタバイパス出口側油路、４７……圧
力スイツチ。
Fig. 1 is a hydraulic circuit diagram of the brake device of the present invention, Fig. 2 is a hydraulic circuit diagram of another embodiment of the invention, Fig. 3 is a hydraulic circuit diagram of the prior art, and Fig. 4 is another embodiment of the prior art. It is a hydraulic circuit diagram. 1...brake mechanism, 2...swivel motor, 5,
5'...Swivel switching valve, 6,6'...Solenoid valve, 7...
... Hydraulic pressure acting part, 10, 46 ... Electric circuit, 17
...Selector valve, 19,19'...Switching valve,
20...Center bypass outlet side oil passage, 47...Pressure switch.
Claims (1)
ばね力にてブレーキ作動し、油圧力にてブレーキ
解除がなされる如きブレーキ機構をそなえた建設
機械の旋回体パーキング用ブレーキ装置において
、パイロツトポンプ８と旋回モータ２用ブレーキ
機構１との油路中間にセレクタバルブ１７を設け
、該セレクタバルブ１７のパイロツト圧受圧部１
８を最下流側切換弁１９のセンタバイパス出口側
油路２０に接続せしめ、該センタバイパス出口側
油路２０へ導出されるネガコン圧力により上記セ
レクタバルブ１７を切換作動可能とするとともに
、ブレーキ機構１の油圧力作用部７をパイロツト
ポンプ８またはタンク連通油路に切換接続可能に
構成していることを特徴とする建設機械の旋回体
パーキング用ブレーキ装置。 A brake device for parking a revolving body of a construction machine, which has an upper revolving body and is equipped with a brake mechanism in which the brake is actuated by a spring force on the revolving shaft of the upper revolving body and the brake is released by hydraulic pressure, A selector valve 17 is provided between the oil path between the pilot pump 8 and the brake mechanism 1 for the swing motor 2, and the pilot pressure receiving part 1 of the selector valve 17
8 is connected to the center bypass outlet side oil passage 20 of the most downstream side switching valve 19, and the negative control pressure led to the center bypass outlet side oil passage 20 enables the switching operation of the selector valve 17, and the brake mechanism 1 A brake device for parking a revolving structure of a construction machine, characterized in that a hydraulic pressure acting part 7 is configured to be switchable and connectable to a pilot pump 8 or a tank communication oil path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850186U JPS635056U (en) | 1986-06-26 | 1986-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850186U JPS635056U (en) | 1986-06-26 | 1986-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS635056U true JPS635056U (en) | 1988-01-13 |
Family
ID=30966492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9850186U Pending JPS635056U (en) | 1986-06-26 | 1986-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS635056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155988A (en) * | 2007-12-28 | 2009-07-16 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Revolving drive control device and construction machine including it |
-
1986
- 1986-06-26 JP JP9850186U patent/JPS635056U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155988A (en) * | 2007-12-28 | 2009-07-16 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Revolving drive control device and construction machine including it |
| JP4594981B2 (en) * | 2007-12-28 | 2010-12-08 | 住友建機株式会社 | Swivel drive control device and construction machine including the same |