JPH01108409U - - Google Patents
Info
- Publication number
- JPH01108409U JPH01108409U JP198088U JP198088U JPH01108409U JP H01108409 U JPH01108409 U JP H01108409U JP 198088 U JP198088 U JP 198088U JP 198088 U JP198088 U JP 198088U JP H01108409 U JPH01108409 U JP H01108409U
- Authority
- JP
- Japan
- Prior art keywords
- return path
- proof
- switching valve
- pressure
- oil
- 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
- 239000003245 coal Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案による防爆形油圧装置の油圧回
路図、第２図は従来の防爆形油圧装置のふたを取
つた平面図、第３図は第２図の側面図、第４図は
第２図の配管接続部の詳細断面図、第５図は第２
図の電線引込み部の詳細断面図である。
１……油圧装置箱、２……ふた、４……油タン
ク、１３……マニホールド、１７……配管接続部
、１９……油、２１，２１ａ，２１ｂ……管路、
２３……外部配管、２８……艤装電線、５１……
シリンダ、５２……油温センサ、５３……管路、
５４……冷却管。
Fig. 1 is a hydraulic circuit diagram of an explosion-proof hydraulic system according to the present invention, Fig. 2 is a plan view of a conventional explosion-proof hydraulic system with the lid removed, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a hydraulic circuit diagram of an explosion-proof hydraulic system according to the present invention. Figure 2 is a detailed sectional view of the piping connection, Figure 5 is the
It is a detailed sectional view of the electric wire lead-in part of a figure. DESCRIPTION OF SYMBOLS 1... Hydraulic device box, 2... Lid, 4... Oil tank, 13... Manifold, 17... Piping connection part, 19... Oil, 21, 21a, 21b... Pipe line,
23... External piping, 28... Outfitting electric wire, 51...
Cylinder, 52...Oil temperature sensor, 53...Pipeline,
54...Cooling pipe.
Claims (1)
造の装置箱に収納し、これと外部の油圧シリンダ
との配管を狭げき防爆構造で接続してなる耐圧防
爆形油圧装置において、前記箱内の油タンクへの
油の戻り路回路の途中に切替弁を設け、この切替
弁と油タンク間との戻り路を、これと並行で装置
箱外を通つて装置箱内に入る戻り路とに分割し、
戻り油の油温に応じて切換える前記切替弁を前記
戻り路に設けたことを特徴とする耐圧防爆形油圧
装置。 In a pressure-resistant explosion-proof hydraulic system, in which hydraulic equipment used in a coal mine, etc. is housed in a pressure-resistant explosion-proof device box, and piping is connected to an external hydraulic cylinder using a narrow explosion-proof structure, A switching valve is installed in the middle of the oil return path circuit to the oil tank, and the return path between this switching valve and the oil tank is divided into a parallel return path that passes outside the equipment box and enters the equipment box. death,
A pressure-resistant explosion-proof hydraulic system, characterized in that the switching valve that switches according to the temperature of return oil is provided in the return path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP198088U JPH01108409U (en) | 1988-01-13 | 1988-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP198088U JPH01108409U (en) | 1988-01-13 | 1988-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108409U true JPH01108409U (en) | 1989-07-21 |
Family
ID=31202348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP198088U Pending JPH01108409U (en) | 1988-01-13 | 1988-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108409U (en) |
-
1988
- 1988-01-13 JP JP198088U patent/JPH01108409U/ja active Pending
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