JPH0210137U - - Google Patents
Info
- Publication number
- JPH0210137U JPH0210137U JP8796088U JP8796088U JPH0210137U JP H0210137 U JPH0210137 U JP H0210137U JP 8796088 U JP8796088 U JP 8796088U JP 8796088 U JP8796088 U JP 8796088U JP H0210137 U JPH0210137 U JP H0210137U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- circuit
- hoist
- raising circuit
- throttle
- 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 2
Landscapes
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図、第２図は本考案の実施例を示し、第１
図は回路図、第２図はダンプトラツクの正面図、
第３図は従来の回路図である。
１０は車体、１１はボデイ、１２はホイストシ
リンダ、１４はポンプ、１５はホイストバルブ、
１６は上げ回路、１７は下げ回路、１８はスロー
リターンバルブ、１９はバルブ、２０は第１絞り
、２１は第２絞り、２３はリセツト釦。
Figures 1 and 2 show embodiments of the present invention;
The figure is a circuit diagram, the second figure is a front view of a dump truck,
FIG. 3 is a conventional circuit diagram. 10 is a vehicle body, 11 is a body, 12 is a hoist cylinder, 14 is a pump, 15 is a hoist valve,
16 is an up circuit, 17 is a down circuit, 18 is a slow return valve, 19 is a valve, 20 is a first aperture, 21 is a second aperture, and 23 is a reset button.
Claims (1)
に上下回動自在に設けると共に、車体１０とボデ
イ１１とに亘つてホイストシリンダ１２を枢着連
結し、このホイストシリンダ１２の伸長室１２ａ
、縮少室１２ｂに上げ回路１６、下げ回路１７を
接続すると共に、ポンプ１４の吐出圧油をホイス
トバルブ１５で上げ回路１６、下げ回路１７に供
給制御し、前記上げ回路１６に、第１絞り２０と
第２絞り２１を備えたスローリターンバルブ１８
及び上げ回路１６を遮断する保持位置Ｎ、上げ回
路１６を第１絞り２０を介して連通する第１位置
、上げ回路１６を第２絞り２１を介して連通す
る第２位置を備えたバルブ１９を設けると共に
、該バルブ１９を、ホイストバルブ１５が上げ位
置となると第１位置となり、ホイストバルブ１
５を下げ位置としリセツト釦２３をＯＮすると第
１位置となり、かつボデイ１１が倒伏姿勢より
若干上方位置となると第２位置となるように構
成したことを特徴とするダンプトラツクのボデイ
上下回動装置。 A body 11 is provided on the vehicle body 10 so as to be vertically movable between an upright position and a collapsed position, and a hoist cylinder 12 is pivotally connected to the vehicle body 10 and the body 11, and an extension chamber 12a of this hoist cylinder 12 is provided.
, a raising circuit 16 and a lowering circuit 17 are connected to the reduction chamber 12b, and a hoist valve 15 controls the supply of pressure oil from the pump 14 to the raising circuit 16 and lowering circuit 17. 20 and a slow return valve 18 with a second throttle 21
and a valve 19 having a holding position N that blocks the raising circuit 16, a first position communicating the raising circuit 16 through the first throttle 20, and a second position communicating the raising circuit 16 through the second throttle 21. At the same time, when the hoist valve 15 is in the raised position, the valve 19 is in the first position, and the hoist valve 1 is in the first position.
5 is in the lowered position and when the reset button 23 is turned on, the device is in the first position, and when the body 11 is slightly above the lying position, it is in the second position. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8796088U JPH0210137U (en) | 1988-07-04 | 1988-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8796088U JPH0210137U (en) | 1988-07-04 | 1988-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210137U true JPH0210137U (en) | 1990-01-23 |
Family
ID=31312547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8796088U Pending JPH0210137U (en) | 1988-07-04 | 1988-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484048U (en) * | 1990-11-30 | 1992-07-22 |
-
1988
- 1988-07-04 JP JP8796088U patent/JPH0210137U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484048U (en) * | 1990-11-30 | 1992-07-22 |