JPS6391538U - - Google Patents
Info
- Publication number
- JPS6391538U JPS6391538U JP18615286U JP18615286U JPS6391538U JP S6391538 U JPS6391538 U JP S6391538U JP 18615286 U JP18615286 U JP 18615286U JP 18615286 U JP18615286 U JP 18615286U JP S6391538 U JPS6391538 U JP S6391538U
- Authority
- JP
- Japan
- Prior art keywords
- solenoid valve
- circuit
- power source
- hydraulic drive
- construction machinery
- 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
- 238000010276 construction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の建設機械用油圧駆動装置の起
動装置の一実施例を示す電気回路図、第２図は従
来の電磁弁制御回路を示す電気回路図、第３図は
これらの起動回路と共に使用される油圧駆動装置
の一例を示す油圧回路図である。
６……電磁弁、７……エンジン起動回路、８…
…キースイツチ、９……電源、１０……手動スイ
ツチ、１１……リレー、１２……リレー接点、１
３……リレーコイル。
Fig. 1 is an electric circuit diagram showing an embodiment of the starting device for a hydraulic drive system for construction machinery according to the present invention, Fig. 2 is an electric circuit diagram showing a conventional solenoid valve control circuit, and Fig. 3 is a starting circuit for these. FIG. 2 is a hydraulic circuit diagram showing an example of a hydraulic drive device used together with the hydraulic drive device. 6... Solenoid valve, 7... Engine starting circuit, 8...
... Key switch, 9 ... Power supply, 10 ... Manual switch, 11 ... Relay, 12 ... Relay contact, 1
3...Relay coil.
Claims (1)
選択する電磁弁と、電磁弁回路のみを電源に接続
させる第一の接続状態およびエンジン起動回路と
電磁弁回路とを電源に接続させる第二の接続状態
をもつキースイツチと、電磁弁とキースイツチと
の間に接続された常時接点が開いている手動スイ
ツチとを具備している建設機械用油圧駆動装置の
起動装置において、キースイツチの第二の接続状
態において、電磁弁を電源に接続させる手段を具
備していること、を特徴としている建設機械用油
圧駆動装置の起動装置。 ２ 電磁弁を電源に接続させる手段がリレーから
なり、リレー接点を手動スイツチと並列に接続さ
れていると共に、エンジンの起動ごとに接点を閉
じるように、リレーコイルをエンジン起動回路に
たいして接続されている実用新案登録請求の範囲
第１項に記載の建設機械用油圧駆動装置の起動装
置。 ３ リレーコイルがエンジン起動回路と並列接続
されている実用新案登録請求の範囲第２項に記載
の建設機械用油圧駆動装置の起動装置。[Scope of Claim for Utility Model Registration] 1. An engine starting circuit, a solenoid valve that selects the supply pressure of a hydraulic circuit, a first connection state that connects only the solenoid valve circuit to a power source, and a connection between the engine starting circuit and the solenoid valve circuit. A starting device for a hydraulic drive device for construction machinery, comprising a key switch having a second connection state for connecting to a power source, and a manual switch with a permanently open contact connected between a solenoid valve and the key switch, 1. A starting device for a hydraulic drive device for construction machinery, comprising means for connecting a solenoid valve to a power source in a second connected state of a key switch. 2. The means for connecting the solenoid valve to the power source consists of a relay, the relay contacts are connected in parallel with the manual switch, and the relay coil is connected to the engine starting circuit so that the contacts are closed each time the engine is started. A starting device for a hydraulic drive device for construction machinery as set forth in claim 1 of the utility model registration claim. 3. The starting device for a hydraulic drive device for construction machinery according to claim 2, wherein the relay coil is connected in parallel with the engine starting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18615286U JPH0450445Y2 (en) | 1986-12-04 | 1986-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18615286U JPH0450445Y2 (en) | 1986-12-04 | 1986-12-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391538U true JPS6391538U (en) | 1988-06-14 |
| JPH0450445Y2 JPH0450445Y2 (en) | 1992-11-27 |
Family
ID=31135446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18615286U Expired JPH0450445Y2 (en) | 1986-12-04 | 1986-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450445Y2 (en) |
-
1986
- 1986-12-04 JP JP18615286U patent/JPH0450445Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450445Y2 (en) | 1992-11-27 |