JPH0243894U - - Google Patents
Info
- Publication number
- JPH0243894U JPH0243894U JP12145588U JP12145588U JPH0243894U JP H0243894 U JPH0243894 U JP H0243894U JP 12145588 U JP12145588 U JP 12145588U JP 12145588 U JP12145588 U JP 12145588U JP H0243894 U JPH0243894 U JP H0243894U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cylinder
- oil
- relief valve
- tank
- 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
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Safety Valves (AREA)
- Actuator (AREA)
Description
第１図は本考案の第１の実施例による逃し弁の
構成を示す半裁断面図、第２図は第２の実施例に
よる逃し弁の構成を示す半裁断面図、第３図ない
し第６図は従来例の説明に使用した図で、第３図
は油圧ジヤツキの側面図、第４図は回路図、第５
図は逃し弁の構成図、第６図は第５図の部を詳
細に示す半裁断面図である。
１……シリンダ、３……ピストン、５……ロツ
ド、７……ポンプ、９……タンク、１１……逃し
弁、１０１……スクリユ、１０３……雄ねじ部、
１０５……雌ねじ部。
FIG. 1 is a half-cut sectional view showing the structure of a relief valve according to a first embodiment of the present invention, FIG. 2 is a half-cut sectional view showing the structure of a relief valve according to a second embodiment, and FIGS. 3 to 6 are diagrams used to explain the conventional example, Fig. 3 is a side view of the hydraulic jack, Fig. 4 is a circuit diagram, and Fig. 5 is a side view of the hydraulic jack.
The figure is a configuration diagram of the relief valve, and FIG. 6 is a half-cut cross-sectional view showing the part shown in FIG. 5 in detail. 1... Cylinder, 3... Piston, 5... Rod, 7... Pump, 9... Tank, 11... Relief valve, 101... Screw, 103... Male thread part,
105...Female screw part.
Claims (1)
トンの上昇によりジヤツキ機能を発揮するピスト
ン・シリンダ機構と、上記シリンダ内であつてピ
ストンの下方にタンクから吸引して加圧した油を
供給し、ピストンを上昇させるポンプと、上記シ
リンダ内の油を上記タンク内に選択的に戻して油
圧を開放する逃し弁とを備えてなる油圧ジヤツキ
において、上記逃し弁はねじ込み式であつて螺合
部の重合度によつて開度を調整するものであるこ
とを特徴とする油圧ジヤツキ。 A piston-cylinder mechanism that accommodates a piston in a cylinder so that it can move up and down and exerts a jacking function by raising the piston, and a piston-cylinder mechanism in which pressurized oil is sucked from a tank and supplied below the piston within the cylinder and below the piston. In a hydraulic jack comprising a pump for raising oil and a relief valve for selectively returning the oil in the cylinder to the tank to release the hydraulic pressure, the relief valve is of a screw-in type, and the degree of polymerization of the threaded portion is fixed. A hydraulic jack characterized in that the opening degree is adjusted by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12145588U JPH0243894U (en) | 1988-09-16 | 1988-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12145588U JPH0243894U (en) | 1988-09-16 | 1988-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243894U true JPH0243894U (en) | 1990-03-27 |
Family
ID=31368477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12145588U Pending JPH0243894U (en) | 1988-09-16 | 1988-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243894U (en) |
-
1988
- 1988-09-16 JP JP12145588U patent/JPH0243894U/ja active Pending