JPS61197370U - - Google Patents
Info
- Publication number
- JPS61197370U JPS61197370U JP8000785U JP8000785U JPS61197370U JP S61197370 U JPS61197370 U JP S61197370U JP 8000785 U JP8000785 U JP 8000785U JP 8000785 U JP8000785 U JP 8000785U JP S61197370 U JPS61197370 U JP S61197370U
- Authority
- JP
- Japan
- Prior art keywords
- throttle
- valve
- hole
- hoist
- fitted
- 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
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の実施例を示す断面図、第２図
は要部の拡大断面図、第３図はホイスト油回路図
、第４図はダンプトラツクのボデイの回動作用説
明図、第５図はホイスト油圧回路の縮み回路内圧
力線図、第６図は従来のホイスト油圧回路図であ
る。
１は弁体、２は弁座、５はポペツト弁、６はば
ね、７は絞り孔、８は流路孔、９は絞りスプール
。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is a hoist oil circuit diagram, Fig. 4 is an explanatory diagram of the rotating movement of the body of a dump truck, FIG. 5 is a compression circuit pressure diagram of the hoist hydraulic circuit, and FIG. 6 is a conventional hoist hydraulic circuit diagram. 1 is a valve body, 2 is a valve seat, 5 is a poppet valve, 6 is a spring, 7 is a throttle hole, 8 is a channel hole, and 9 is a throttle spool.
Claims (1)
有する筒状のポペツト弁５を、弁体１に嵌合し、
絞り孔７と流路孔８の間の外周段状部を弁体１の
弁座２にばね６にて付勢当接し、絞り孔７側をバ
ルブ側に、流路孔８側をホイストシリンダ側に接
続したホイスト油圧回路の衝撃防止弁において、
ポペツト弁５の先端部に、ホイストシリンダ側回
路の絞り圧力が所定圧力以上になつたときに絞り
孔７を絞るようにした絞りスプール９を嵌合した
ことを特徴とするホイスト油圧回路の衝撃防止弁
。 A cylindrical poppet valve 5 having a throttle hole 7 at the tip and a flow passage hole 8 at the middle is fitted to the valve body 1,
The stepped outer circumferential portion between the throttle hole 7 and the flow path hole 8 is urged into contact with the valve seat 2 of the valve body 1 by a spring 6, and the throttle hole 7 side is connected to the valve side, and the flow path hole 8 side is connected to the hoist cylinder. In the shock prevention valve of the hoist hydraulic circuit connected to the side,
Shock prevention for a hoist hydraulic circuit characterized in that a throttle spool 9 is fitted to the tip of the poppet valve 5 to throttle the throttle hole 7 when the throttle pressure in the hoist cylinder side circuit exceeds a predetermined pressure. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8000785U JPS61197370U (en) | 1985-05-30 | 1985-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8000785U JPS61197370U (en) | 1985-05-30 | 1985-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61197370U true JPS61197370U (en) | 1986-12-09 |
Family
ID=30625452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8000785U Pending JPS61197370U (en) | 1985-05-30 | 1985-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61197370U (en) |
-
1985
- 1985-05-30 JP JP8000785U patent/JPS61197370U/ja active Pending
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