JPH02143561U - - Google Patents
Info
- Publication number
- JPH02143561U JPH02143561U JP5290389U JP5290389U JPH02143561U JP H02143561 U JPH02143561 U JP H02143561U JP 5290389 U JP5290389 U JP 5290389U JP 5290389 U JP5290389 U JP 5290389U JP H02143561 U JPH02143561 U JP H02143561U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- ports
- neutral
- communicate
- damper
- 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
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Fluid Gearings (AREA)
Description
図面は本考案の実施例を示す油圧回路図である
。
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、１３……チヤ
ージポート、１６，１７……スプール、１８，１
９……ダンパ室、２２，２３……ダンピングオリ
フイス、２７，２８……ニユートラルオリフイス
。
The drawing is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Hydraulic pump, 2... Hydraulic motor, 3, 4
... Main circuit, 5 ... Bypass circuit, 6 ... Neutral control valve, 11, 12 ... Port, 13 ... Charge port, 16, 17 ... Spool, 18, 1
9... Damper chamber, 22, 23... Damping orifice, 27, 28... Neutral orifice.
Claims (1)
互いに対向する２つのスプールと、各スプールの
背部に形成したダンパ室と、油圧ポンプとモータ
とを接続するメイン回路にそれぞれ接続しかつ各
スプールの周囲に開口する２つのポートと、これ
ら各ポートと前記各ダンパ室とを常時連通すべく
各スプールに形成したダンピングオリフイスと、
前記両ポートをスプール中立位置で互いに連通さ
せると共にスプール変位時に連通を遮断するよう
各スプールに設けたニユートラルオリフイスとか
ら構成されることを特徴とする油圧伝動装置の中
立制御弁。 Two spools that face each other and are slidably housed in the valve body in series, a damper chamber formed on the back of each spool, and a main circuit that connects the hydraulic pump and motor are connected to each other. two ports opening to the periphery; a damping orifice formed on each spool to constantly communicate between each of these ports and each of the damper chambers;
A neutral control valve for a hydraulic transmission device, comprising a neutral orifice provided on each spool so as to allow the ports to communicate with each other at a spool neutral position and to cut off communication when the spool is displaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052903U JPH071544Y2 (en) | 1989-05-08 | 1989-05-08 | Neutral control valve for hydraulic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052903U JPH071544Y2 (en) | 1989-05-08 | 1989-05-08 | Neutral control valve for hydraulic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02143561U true JPH02143561U (en) | 1990-12-05 |
| JPH071544Y2 JPH071544Y2 (en) | 1995-01-18 |
Family
ID=31573610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989052903U Expired - Lifetime JPH071544Y2 (en) | 1989-05-08 | 1989-05-08 | Neutral control valve for hydraulic transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071544Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49125764A (en) * | 1973-04-10 | 1974-12-02 | ||
| JPS5498972U (en) * | 1977-12-26 | 1979-07-12 |
-
1989
- 1989-05-08 JP JP1989052903U patent/JPH071544Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49125764A (en) * | 1973-04-10 | 1974-12-02 | ||
| JPS5498972U (en) * | 1977-12-26 | 1979-07-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071544Y2 (en) | 1995-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |