JPS62188602U - - Google Patents
Info
- Publication number
- JPS62188602U JPS62188602U JP6081687U JP6081687U JPS62188602U JP S62188602 U JPS62188602 U JP S62188602U JP 6081687 U JP6081687 U JP 6081687U JP 6081687 U JP6081687 U JP 6081687U JP S62188602 U JPS62188602 U JP S62188602U
- Authority
- JP
- Japan
- Prior art keywords
- change
- pressure oil
- circuit
- pilot circuit
- main circuit
- 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
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
- Types And Forms Of Lifts (AREA)
Description
第１図は従来の油圧装置を示す油圧エレベータ
の概略油圧回路図、第２図は第１図の運転特性図
、第３図はこの考案による油圧装置の一実施例を
示す第１図相当図、第４図は第３図の補正弁の断
面図である。
３……第１主回路、６……第２主回路、７……
第１流量制御弁、８……第１パイロツト回路、１
３……第３主回路、１４……第２流量制御弁、１
５……第２パイロツト回路、２１……補正弁、２
１ｂ……オリフイス。なお、図中同一部分または
相当部分は同一符号により示す。
Fig. 1 is a schematic hydraulic circuit diagram of a hydraulic elevator showing a conventional hydraulic system, Fig. 2 is an operating characteristic diagram of Fig. 1, and Fig. 3 is a diagram equivalent to Fig. 1 showing an embodiment of the hydraulic system according to this invention. , FIG. 4 is a sectional view of the compensation valve of FIG. 3. 3...First main circuit, 6...Second main circuit, 7...
First flow control valve, 8...First pilot circuit, 1
3...Third main circuit, 14...Second flow control valve, 1
5...Second pilot circuit, 21...Compensation valve, 2
1b... Orifice. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.
Claims (1)
する流量制御弁と、上記主回路から分岐されて上
記流量制御弁を作動させるパイロツト回路と、こ
のパイロツト回路に設けられて上記圧油の温度に
基づく粘度変化による上記パイロツト回路内の流
速変化を補正する補正弁とが設けられたものにお
いて、所定温度に対する上記圧油の温度変化に対
応してオリフイス開口面積が変化して上記パイロ
ツト回路における上記圧油の温度に基づく粘度変
化による流速変化を補正する形状記憶合金製のオ
リフイスを上記補正弁に備えたことを特徴とする
油圧装置。 A flow control valve provided in the main circuit to control the flow rate of the pressure oil in the main circuit, a pilot circuit branched from the main circuit to operate the flow control valve, and a pilot circuit provided in the pilot circuit to control the temperature of the pressure oil. and a correction valve for correcting a change in flow velocity in the pilot circuit due to a change in viscosity based on A hydraulic device characterized in that the correction valve is equipped with an orifice made of a shape memory alloy that corrects a change in flow velocity due to a change in viscosity based on the temperature of the pressure oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081687U JPS62188602U (en) | 1987-04-22 | 1987-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081687U JPS62188602U (en) | 1987-04-22 | 1987-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62188602U true JPS62188602U (en) | 1987-12-01 |
Family
ID=30893577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6081687U Pending JPS62188602U (en) | 1987-04-22 | 1987-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62188602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002501151A (en) * | 1996-09-13 | 2002-01-15 | マルティリフト オイ | Method of controlling the operating speed of a hydraulically driven machine and a drive for said machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972719A (en) * | 1972-11-17 | 1974-07-13 | ||
| JPS5183345A (en) * | 1975-01-20 | 1976-07-21 | Hitachi Ltd |
-
1987
- 1987-04-22 JP JP6081687U patent/JPS62188602U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972719A (en) * | 1972-11-17 | 1974-07-13 | ||
| JPS5183345A (en) * | 1975-01-20 | 1976-07-21 | Hitachi Ltd |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002501151A (en) * | 1996-09-13 | 2002-01-15 | マルティリフト オイ | Method of controlling the operating speed of a hydraulically driven machine and a drive for said machine |
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