JPS59116465U - Blade work/scraper work switching device for construction vehicles - Google Patents
Blade work/scraper work switching device for construction vehiclesInfo
- Publication number
- JPS59116465U JPS59116465U JP722183U JP722183U JPS59116465U JP S59116465 U JPS59116465 U JP S59116465U JP 722183 U JP722183 U JP 722183U JP 722183 U JP722183 U JP 722183U JP S59116465 U JPS59116465 U JP S59116465U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- work
- scraper
- pilot
- cylinder
- 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
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図・第２図はそれぞれ異なる従来例の説明図、第３
図は本考案の実施例を示す全体図、第４図は油圧装置の
説明図である。
Ａはブルドーザ、Ｂは被けん引式スクレーパ、Ｐはポン
プ、２はブレード、３はブレード用シリンダ、３ｂは下
室、４はボール用シリンダ、１１は第１バルブ、１４は
パイロット作動式切換弁、１４′はパイロット圧受部、
１５は開閉弁。Figures 1 and 2 are explanatory diagrams of different conventional examples, and Figure 3 is an explanatory diagram of different conventional examples.
The figure is an overall view showing an embodiment of the present invention, and FIG. 4 is an explanatory view of the hydraulic system. A is a bulldozer, B is a towed scraper, P is a pump, 2 is a blade, 3 is a blade cylinder, 3b is a lower chamber, 4 is a ball cylinder, 11 is a first valve, 14 is a pilot operated switching valve, 14' is a pilot pressure receiving part;
15 is an on-off valve.
Claims (1)
ブルドーザＡに、被けん引式スクレーパＢを連結した建
設車両において、ポンプＰの吐出側を第１バルブ１１を
経てパイロット作動式切換弁１４に接続し、該パイロッ
ト作動式切換弁１４を、常時ブレード用シリンダ３′に
接続した第１装置Ｉに保持し、かつブレード用シリンダ
３のブレード保持圧によってボール用シリンダ４に接続
した第２装置Ｈに切換えるように構成すると共に、前記
パイロット作動式切換弁１４のパイロット圧受部１４′
とブレード用シリンダ３の下室３ｂとを、連通位置■と
遮断位置■とに切換えられる開閉弁１５を介して接続連
通したことを特徴とする建設車両のブレード作業・スク
レーパ作業切換装置。In a construction vehicle in which a towed scraper B is connected to a bulldozer A in which a blade 2 is movable up and down by a blade cylinder 3, the discharge side of a pump P is connected to a pilot-operated switching valve 14 through a first valve 11. , the pilot-operated switching valve 14 is always held in the first device I connected to the blade cylinder 3', and is switched to the second device H connected to the ball cylinder 4 by the blade holding pressure of the blade cylinder 3. The pilot pressure receiving portion 14' of the pilot operated switching valve 14 is configured as follows.
A blade work/scraper work switching device for a construction vehicle, characterized in that the blade cylinder 3 and the lower chamber 3b of the blade cylinder 3 are connected and communicated through an on-off valve 15 which can be switched between a communicating position (2) and a blocking position (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP722183U JPS59116465U (en) | 1983-01-24 | 1983-01-24 | Blade work/scraper work switching device for construction vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP722183U JPS59116465U (en) | 1983-01-24 | 1983-01-24 | Blade work/scraper work switching device for construction vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59116465U true JPS59116465U (en) | 1984-08-06 |
Family
ID=30138752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP722183U Pending JPS59116465U (en) | 1983-01-24 | 1983-01-24 | Blade work/scraper work switching device for construction vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116465U (en) |
-
1983
- 1983-01-24 JP JP722183U patent/JPS59116465U/en active Pending
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