JPH0342072U - - Google Patents
Info
- Publication number
- JPH0342072U JPH0342072U JP10257089U JP10257089U JPH0342072U JP H0342072 U JPH0342072 U JP H0342072U JP 10257089 U JP10257089 U JP 10257089U JP 10257089 U JP10257089 U JP 10257089U JP H0342072 U JPH0342072 U JP H0342072U
- Authority
- JP
- Japan
- Prior art keywords
- speed switching
- passage
- piston
- switching piston
- operating
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Description
第１図は本考案に係る油圧モータの断面図であ
る。
１……ケーシング、２……回転軸、３……シリ
ンダブロツク、４……斜板、６……プランジヤ、
８……速度切換ピストン、８ａ……環状凹部、８
ｂ……半径方向連通路、８ｃ……軸方向連通路、
１０……ピストン作動凹部、１２……作動用油圧
通路、１３……ドレーン通路。
FIG. 1 is a sectional view of a hydraulic motor according to the present invention. 1... Casing, 2... Rotating shaft, 3... Cylinder block, 4... Swash plate, 6... Plunger,
8... Speed switching piston, 8a... Annular recess, 8
b... Radial communication path, 8c... Axial communication path,
10... Piston operation recess, 12... Hydraulic passage for operation, 13... Drain passage.
Claims (1)
斜板の傾斜角を速度切換ピストンにより変更する
ようにした可変型油圧アクチユエータにおいて、
前記速度切換ピストン作動凹部の側面に作動用油
圧通路を開口するとともに速度切換ピストンの周
面と後端面とを内部に形成した連通路により連通
し、前記作動用油圧通路から連通路を経て速度切
換ピストンの後端面に作動油圧を作用させ、該速
度切換ピストンの移動量が所定量を越えると前記
作動用油圧通路が該速度切換ピストンにより閉塞
されるようにしたことを特徴とする可変型油圧ア
クチユエータ。 ２ 前記速度切換ピストンが作動用通路閉塞位置
を越えて移動されたときに前記ピストン周面の連
通路と連通するドレーン通路が設けられているこ
とを特徴とする請求項１記載の可変型油圧アクチ
ユエータ。[Claims for Utility Model Registration] 1. A variable hydraulic actuator in which the inclination angle of the swash plate, on which the head portion of the plunger slidably abuts, is changed by a speed switching piston,
An operating hydraulic passage is opened in the side surface of the speed switching piston operating recess, and the peripheral surface and rear end surface of the speed switching piston are communicated with each other through a communication passage formed inside, and speed switching is performed from the operating hydraulic passage through the communication passage. A variable hydraulic actuator characterized in that a working hydraulic pressure is applied to a rear end surface of the piston, and when the moving amount of the speed switching piston exceeds a predetermined amount, the working hydraulic pressure passage is closed by the speed switching piston. . 2. The variable hydraulic actuator according to claim 1, further comprising a drain passage that communicates with the communication passage on the circumferential surface of the piston when the speed switching piston is moved beyond an operating passage closing position. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989102570U JP2500892Y2 (en) | 1989-08-31 | 1989-08-31 | Adjustable hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989102570U JP2500892Y2 (en) | 1989-08-31 | 1989-08-31 | Adjustable hydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342072U true JPH0342072U (en) | 1991-04-22 |
| JP2500892Y2 JP2500892Y2 (en) | 1996-06-12 |
Family
ID=31651464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989102570U Expired - Lifetime JP2500892Y2 (en) | 1989-08-31 | 1989-08-31 | Adjustable hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2500892Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01200068A (en) * | 1987-12-18 | 1989-08-11 | Brueninghaus Hydraulik Gmbh | Axial piston pump |
-
1989
- 1989-08-31 JP JP1989102570U patent/JP2500892Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01200068A (en) * | 1987-12-18 | 1989-08-11 | Brueninghaus Hydraulik Gmbh | Axial piston pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2500892Y2 (en) | 1996-06-12 |
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