JPH0317467U - - Google Patents
Info
- Publication number
- JPH0317467U JPH0317467U JP7746689U JP7746689U JPH0317467U JP H0317467 U JPH0317467 U JP H0317467U JP 7746689 U JP7746689 U JP 7746689U JP 7746689 U JP7746689 U JP 7746689U JP H0317467 U JPH0317467 U JP H0317467U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- ball valve
- seat
- neutral position
- neutral
- 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
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Fluid Gearings (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２図は中立制御弁の切替時の作動状態を示す断面
図である。
１……油圧ポンプ、２……油圧モータ、３，４
……メイン回路、５……バイパス回路、６……中
立制御弁、１１，１２……ポート、１４……スプ
ール、１５，１６……ボール弁、２１，２２……
スプリング、２４，２５……オリフイス。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, and FIG. 2 is a sectional view showing the operating state of the neutral control valve when switching. 1... Hydraulic pump, 2... Hydraulic motor, 3, 4
... Main circuit, 5 ... Bypass circuit, 6 ... Neutral control valve, 11, 12 ... Port, 14 ... Spool, 15, 16 ... Ball valve, 21, 22 ...
Spring, 24, 25...orifice.
Claims (1)
通する連通路と、スプールの両端に配置したボー
ル弁と、スプールを中立位置に保持するためにボ
ール弁を介してスプールを両端から付勢するスプ
リングと、スプールの変位によりボール弁を着座
させるようにスプールの両端に配置したシート部
と、各シート部の上流に配設したオリフイスと、
各オリフイスの上流を油圧ポンプとモータを接続
するメイン回路にそれぞれ接続するバイパス通路
とからなる油圧伝動装置の中立制御弁。 A communication path that communicates between both ends of the spool when the spool is in the neutral position, a ball valve located at both ends of the spool, and a spring that biases the spool from both ends via the ball valve to maintain the spool in the neutral position. , seat parts arranged at both ends of the spool so as to seat the ball valve by displacement of the spool, and orifices arranged upstream of each seat part;
A neutral control valve for a hydraulic transmission device consisting of a bypass passage connecting the upstream side of each orifice to a main circuit connecting a hydraulic pump and a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7746689U JPH0317467U (en) | 1989-06-30 | 1989-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7746689U JPH0317467U (en) | 1989-06-30 | 1989-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0317467U true JPH0317467U (en) | 1991-02-21 |
Family
ID=31619882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7746689U Pending JPH0317467U (en) | 1989-06-30 | 1989-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317467U (en) |
-
1989
- 1989-06-30 JP JP7746689U patent/JPH0317467U/ja active Pending