JPH02116554U - - Google Patents
Info
- Publication number
- JPH02116554U JPH02116554U JP2211789U JP2211789U JPH02116554U JP H02116554 U JPH02116554 U JP H02116554U JP 2211789 U JP2211789 U JP 2211789U JP 2211789 U JP2211789 U JP 2211789U JP H02116554 U JPH02116554 U JP H02116554U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- travel
- hydraulic motor
- actuator
- circuit
- 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
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案の第１実施例を示す油圧回路図
、第２図は本考案の第２実施例を示す油圧回路図
、第３図は従来の技術における油圧回路図、第４
図は油圧掘削機における左走行モータ及びアーム
回転用モータの装着位置を示す図である。
１……第１の油圧ポンプ、２……第２の油圧ポ
ンプ、３……右走行操作弁、４……左走行操作弁
、５……右走行用油圧モータ、６……右走行用油
圧モータ、７……アーム回転用油圧モータ、８，
９……ポペツト弁、１０，１１……電磁弁、１２
……アーム回転操作弁、１３……制御ポンプ、１
４……電磁弁、１５……バイパス回路、１６……
スプール弁。
Fig. 1 is a hydraulic circuit diagram showing a first embodiment of the invention, Fig. 2 is a hydraulic circuit diagram showing a second embodiment of the invention, Fig. 3 is a hydraulic circuit diagram of a conventional technology, and Fig. 4 is a hydraulic circuit diagram showing a second embodiment of the invention.
The figure shows the mounting positions of the left travel motor and arm rotation motor in a hydraulic excavator. 1...First hydraulic pump, 2...Second hydraulic pump, 3...Right travel operation valve, 4...Left travel operation valve, 5...Right travel hydraulic motor, 6...Right travel hydraulic pressure Motor, 7...Hydraulic motor for arm rotation, 8,
9... Poppet valve, 10, 11... Solenoid valve, 12
...Arm rotation operation valve, 13...Control pump, 1
4...Solenoid valve, 15...Bypass circuit, 16...
spool valve.
Claims (1)
ータの何れか一方を、他方の油圧ポンプにより他
方の走行用油圧モータと前記左右走行用油圧モー
タ以外のアクチユエータを駆動するようになした
油圧掘削機の走行回路において、前記他方の油圧
ポンプと前記他方の走行用油圧モータ操作弁を接
続する油圧管路に方向切換え弁を介在させ、前記
左右走行用油圧モータ以外のアクチユエータを駆
動する時は前記他方の油圧ポンプの吐出油を前記
左右走行用油圧モータ以外のアクチユエータへ供
給し、前記左右走行用油圧モータ以外のアクチユ
エータを駆動しない時は前記他方の油圧ポンプの
吐出油を前記他方の走行用油圧モータへ供給する
よう切り換えることを特徴とする油圧掘削機にお
ける走行曲がり防止用油圧回路。 (2) 第(1)の請求項における方向切り換え弁をポ
ペツト弁により構成したことを特徴とする油圧掘
削機における走行曲がり防止用油圧回路。 (3) 第(1)の請求項における方向切り換え弁をス
プール弁により構成したことを特徴とする油圧掘
削機における走行曲がり防止用油圧回路。[Scope of Claim for Utility Model Registration] (1) One hydraulic pump drives one of the hydraulic motors for left and right travel, and the other hydraulic pump drives the other hydraulic motor for travel and actuators other than the hydraulic motor for left and right travel. In the traveling circuit of the hydraulic excavator, a direction switching valve is interposed in the hydraulic conduit connecting the other hydraulic pump and the other hydraulic motor operating valve for traveling, and When driving an actuator, the oil discharged from the other hydraulic pump is supplied to an actuator other than the hydraulic motor for left and right travel, and when the actuator other than the hydraulic motor for left and right travel is not driven, the oil discharged from the other hydraulic pump is supplied to the actuator other than the hydraulic motor for left and right travel. A hydraulic circuit for preventing travel deflection in a hydraulic excavator, characterized in that the hydraulic circuit is switched to supply the other travel hydraulic motor to the other travel hydraulic motor. (2) A hydraulic circuit for preventing running deflection in a hydraulic excavator, characterized in that the direction switching valve according to claim (1) is constituted by a poppet valve. (3) A hydraulic circuit for preventing running deflection in a hydraulic excavator, characterized in that the direction switching valve according to claim (1) is constituted by a spool valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2211789U JPH02116554U (en) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2211789U JPH02116554U (en) | 1989-02-28 | 1989-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02116554U true JPH02116554U (en) | 1990-09-18 |
Family
ID=31239942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2211789U Pending JPH02116554U (en) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02116554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633778U (en) * | 1992-10-08 | 1994-05-06 | 株式会社 神崎高級工機製作所 | Work vehicle steering mechanism |
-
1989
- 1989-02-28 JP JP2211789U patent/JPH02116554U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633778U (en) * | 1992-10-08 | 1994-05-06 | 株式会社 神崎高級工機製作所 | Work vehicle steering mechanism |
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