JPH01105661U - - Google Patents
Info
- Publication number
- JPH01105661U JPH01105661U JP20070287U JP20070287U JPH01105661U JP H01105661 U JPH01105661 U JP H01105661U JP 20070287 U JP20070287 U JP 20070287U JP 20070287 U JP20070287 U JP 20070287U JP H01105661 U JPH01105661 U JP H01105661U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- pump
- circuit
- hydraulic actuator
- group
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Description
図面は本考案に係るホイール式バツクホー作業
車の油圧回路の実施例を示し、第１図は全体油圧
回路図、第２図はホイール式バツクホー作業車の
側面図である。
５……ボツクホー装置、７……静油圧式無段変
速装置、９……アーム、１０……ブーム、１１…
…バケツト、Ｐ１……静油圧式無段変速装置用油
圧ポンプ、Ｐ２……バツクホー装置用ポンプ、Ｐ
３……操向用ポンプ、Ｐ４……チヤージポンプ、
Ａ……第１油圧アクチユエータ、Ｂ，Ｄ……第２
油圧アクチユエータ、Ｍ１……油圧モータ、Ｃ１
……操向用油圧アクチユエータ、ｃ……第２油圧
回路、Ｖ９……切換弁機構。
The drawings show an embodiment of a hydraulic circuit for a wheeled backhoe vehicle according to the present invention, and FIG. 1 is an overall hydraulic circuit diagram, and FIG. 2 is a side view of the wheeled backhoe vehicle. 5... Bockhoe device, 7... Hydrostatic continuously variable transmission, 9... Arm, 10... Boom, 11...
... Bucket, P 1 ... Hydraulic pump for hydrostatic continuously variable transmission, P 2 ... Pump for backhoe device, P
3 ...Steering pump, P4 ...Charge pump,
A...First hydraulic actuator, B, D...Second
Hydraulic actuator, M 1 ... Hydraulic motor, C 1
...Steering hydraulic actuator, c...Second hydraulic circuit, V9 ...Switching valve mechanism.
Claims (1)
１と油圧モータＭ１とを接続する回路ａに第１油
圧回路ｂを介して注油するチヤージポンプＰ４を
備えるとともに、操向用油圧アクチユエータＣ１
に対する操向用ポンプＰ３を第２油圧回路ｃで接
続してあるホイール式バツクホー作業車の油圧回
路であつて、アーム９・ブーム１０・バケツト１
１を備えたバツクホー装置５用、バツクホー装置
左右揺動用、及び、旋回台用油圧アクチユエータ
群を、第１油圧アクチユエータＡ群、及び、第２
油圧アクチユエータ（Ｂ及びＤ）群とに分け、そ
の第１油圧アクチユエータＡ群とバツクホー装置
５用ポンプＰ２とを並列接続するとともに、前記
第２油圧アクチユエータ（Ｂ及びＤ）群と、前記
チヤージポンプＰ４及び操向用ポンプＰ３の少な
くとも何れか一方（Ｐ３又はＰ４）とを、切換弁
機構Ｖ９を介して分岐した油圧回路によつて並列
接続してあるホイール式バツクホー作業車の油圧
回路。 Hydraulic pump P in hydrostatic continuously variable transmission 7
A charge pump P4 is provided for supplying oil through a first hydraulic circuit b to a circuit a connecting the hydraulic motor M1 and the hydraulic motor M1 , and a steering hydraulic actuator C1 .
This is a hydraulic circuit for a wheeled backhoe work vehicle in which a steering pump P3 is connected to a second hydraulic circuit c, and the steering pump P3 is connected to an arm 9, a boom 10, and a bucket 1.
The hydraulic actuator groups for the backhoe device 5, for left-right swinging of the backhoe device, and for the swivel table, each having a first hydraulic actuator A group and a second hydraulic actuator group
The first hydraulic actuator A group and the pump P2 for the backhoe device 5 are connected in parallel, and the second hydraulic actuator (B and D) group and the charge pump P2 are connected in parallel. 4 and at least one of the steering pumps P3 ( P3 or P4 ) are connected in parallel by a hydraulic circuit branched through a switching valve mechanism V9 . circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987200702U JPH0730778Y2 (en) | 1987-12-28 | 1987-12-28 | Hydraulic circuit of wheeled backhoe work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987200702U JPH0730778Y2 (en) | 1987-12-28 | 1987-12-28 | Hydraulic circuit of wheeled backhoe work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01105661U true JPH01105661U (en) | 1989-07-17 |
| JPH0730778Y2 JPH0730778Y2 (en) | 1995-07-19 |
Family
ID=31491096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987200702U Expired - Lifetime JPH0730778Y2 (en) | 1987-12-28 | 1987-12-28 | Hydraulic circuit of wheeled backhoe work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730778Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096479U (en) * | 1983-12-05 | 1985-07-01 | 日立建機株式会社 | Hydraulic circuit of hydraulic machine with blade |
-
1987
- 1987-12-28 JP JP1987200702U patent/JPH0730778Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096479U (en) * | 1983-12-05 | 1985-07-01 | 日立建機株式会社 | Hydraulic circuit of hydraulic machine with blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730778Y2 (en) | 1995-07-19 |
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