JPH03119056U - - Google Patents
Info
- Publication number
- JPH03119056U JPH03119056U JP2845090U JP2845090U JPH03119056U JP H03119056 U JPH03119056 U JP H03119056U JP 2845090 U JP2845090 U JP 2845090U JP 2845090 U JP2845090 U JP 2845090U JP H03119056 U JPH03119056 U JP H03119056U
- Authority
- JP
- Japan
- Prior art keywords
- oil passage
- swivel joint
- directional control
- dozer
- discharge
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
第１図はこの考案にかかる油圧回路を示す要部
回路図、第２図は小型シヨベルの側面図、第３図
は第２図のＡ−Ａより見た一部切欠き平面図、第
４図は従来技術の要部油圧回路図である。
１……下部走行体、２……ドーザ装置、３……
上部旋回体、４……ドーザシリンダ、５……スパ
ン装置、６……スパンナシリンダ、７，２８……
スイベルジヨイント、８，９……油圧ポンプ、１
０，１１……方向切換弁。
Fig. 1 is a circuit diagram showing the main parts of the hydraulic circuit according to this invention, Fig. 2 is a side view of a small excavator, Fig. 3 is a partially cutaway plan view taken from A-A in Fig. 2, and Fig. 4 The figure is a hydraulic circuit diagram of the main parts of the conventional technology. 1... lower running body, 2... dozer device, 3...
Upper rotating body, 4... Dozer cylinder, 5... Span device, 6... Spanner cylinder, 7, 28...
Swivel joint, 8, 9...Hydraulic pump, 1
0,11... Directional switching valve.
Claims (1)
スパン装置を装備し、上記両装置のそれぞれ方向
切換弁と、下部走行体に配設したドーザシリンダ
とスパンナシリンダとをスイベルジヨイントを介
して連通せしめている小型シヨベルにおいて、ド
ーザ装置用方向切換弁の給排用油路のうちの一方
の油路を、スパン装置用方向切換弁の給排用油路
のうちの一方の油路を、上記方向切換弁とスイベ
ルジヨイントとの間で連結して上部側油路を形成
し、また上記ドーザシリンダとスパンナシリンダ
に通じる給排用油路のうちの一方の油路を、互い
に上記両シリンダとスイベルジヨイントの間で連
結して下部側油路を形成し、上記上部側油路と下
部側油路とをスイベルジヨイントを介し、連通せ
しめて構成したことを特徴とする小型シヨベルの
油圧回路。 The undercarriage is equipped with a dozer device and a span device for adjusting vehicle width dimensions, and the directional control valves of both of the above devices, the dozer cylinder and the spanner cylinder arranged on the undercarriage are connected via a swivel joint. In small excavators that are connected to each other, one of the oil passages for supply and discharge of the directional control valve for the dozer device is connected to one of the oil passages for supply and discharge of the directional control valve for the span device. , the directional control valve and the swivel joint are connected to form an upper oil passage, and one of the supply/discharge oil passages leading to the dozer cylinder and the spanner cylinder is connected to the above-mentioned oil passage. A small excavator characterized in that both cylinders and a swivel joint are connected to form a lower oil passage, and the upper oil passage and the lower oil passage are communicated via the swivel joint. hydraulic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2845090U JPH086122Y2 (en) | 1990-03-20 | 1990-03-20 | Hydraulic circuit of small excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2845090U JPH086122Y2 (en) | 1990-03-20 | 1990-03-20 | Hydraulic circuit of small excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03119056U true JPH03119056U (en) | 1991-12-09 |
| JPH086122Y2 JPH086122Y2 (en) | 1996-02-21 |
Family
ID=31531251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2845090U Expired - Fee Related JPH086122Y2 (en) | 1990-03-20 | 1990-03-20 | Hydraulic circuit of small excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086122Y2 (en) |
-
1990
- 1990-03-20 JP JP2845090U patent/JPH086122Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH086122Y2 (en) | 1996-02-21 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |