JPH031301U - - Google Patents
Info
- Publication number
- JPH031301U JPH031301U JP6094089U JP6094089U JPH031301U JP H031301 U JPH031301 U JP H031301U JP 6094089 U JP6094089 U JP 6094089U JP 6094089 U JP6094089 U JP 6094089U JP H031301 U JPH031301 U JP H031301U
- Authority
- JP
- Japan
- Prior art keywords
- relay
- contact
- drive device
- series
- hydraulic
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案に係る油圧駆動装置のバルブ切
換機構を搭載したクレーン車の一例を示す全体斜
視図、第２図は同上油圧駆動装置のバルブ切換機
構を説明するための油圧回路図、第３図は同上油
圧駆動装置のバルブ切換機構とその電気回路の要
部を示す説明図、第４図は制御状態を示す表、第
５図は従来の油圧駆動装置のバルブ切換機構を示
す油圧回路図である。
１……クレーン車、２……ターンテーブル、３
……ブーム、４……油圧駆動装置（本実施例では
ウインチ装置）、５……フツク、１０……操作バ
ルブ、１１……油圧ポンプ、１２……クラツチ切
換用シリンダー、１３……ブレーキ作動用シリン
ダー、１４……クラツチ切換用電磁バルブ、１５
……リザーバータンク、１６……ブレーキ作動用
電磁バルブ、１７……作動検出器、１８……クラ
ツチ切換用スイツチ、ＣＲ３……第１のリレー、
ＣＲ１……第２のリレー、ＳＯＬ１……電磁コイ
ル、ｃｒ１……第１のリレー接点（ａ接点）、Ｓ
ＯＬ２……電磁コイル、ＣＲ１……第２のリレー
、ｃｒ１−２……第２のリレー接点（ａ接点）、
ｃｒ３……リレー接点（ａ接点）、ｃｒ１−２…
…第３のリレー接点（ｂ接点）。
FIG. 1 is an overall perspective view showing an example of a crane truck equipped with a valve switching mechanism for a hydraulic drive device according to the present invention, FIG. 2 is a hydraulic circuit diagram for explaining the valve switching mechanism for the same hydraulic drive device, and FIG. Figure 3 is an explanatory diagram showing the main parts of the valve switching mechanism and its electric circuit of the same hydraulic drive system, Figure 4 is a table showing the control status, and Figure 5 is a hydraulic circuit showing the valve switching mechanism of the conventional hydraulic drive system. It is a diagram. 1... Crane truck, 2... Turntable, 3
...Boom, 4...Hydraulic drive device (in this embodiment, winch device), 5...Hook, 10...Operation valve, 11...Hydraulic pump, 12...Cylinder for clutch switching, 13...For brake operation Cylinder, 14...Solenoid valve for clutch switching, 15
... Reservoir tank, 16 ... Solenoid valve for brake operation, 17 ... Operation detector, 18 ... Clutch switching switch, CR 3 ... First relay,
CR 1 ... second relay, SOL 1 ... electromagnetic coil, cr 1 ... first relay contact (a contact), S
OL 2 ... Electromagnetic coil, CR 1 ... Second relay, cr 1-2 ... Second relay contact (a contact),
cr 3 ...Relay contact (A contact), cr 1-2 ...
...Third relay contact (b contact).
Claims (1)
リンダーを装備した油圧駆動装置と、該油圧駆動
装置の作動を検出する作動検出器と、該作動検出
器と直列に接続した第１のリレーと、前記油圧駆
動装置に所定の油を受給する油圧ポンプ及びリザ
ーバータンクと、前記油圧駆動装置のクラツチ切
換用スイツチと直列に接続した第２のリレーと、
前記クラツチ切換用シリンダーと前記油圧ポンプ
及びリザーバータンク間の油圧回路に配置された
クラツチ切換用電磁バルブと、該クラツチ切換用
電磁バルブの電磁コイルと直列に配置した第２の
リレーにより作動する第１のリレー接点（ａ接点
）と、前記ブレーキ作動用シリンダーと前記油圧
ポンプ及びリザーバータンク間の油圧回路に配置
されたブレーキ操作用電磁バルブと、該ブレーキ
作動用電磁バルブの電磁コイルに対し直列に接続
された前記第２のリレーにより作動する第２のリ
レー接点（ａ接点）及び第１のリレーにより作動
するリレー接点（ａ接点）と前記第２のリレーに
より作動する第３のリレー接点（ｂ接点）からな
る直・並列回路とで構成したことを特徴とする油
圧駆動装置のバルブ切換機構。 A hydraulic drive device equipped with a clutch switching cylinder and a brake actuation cylinder, an operation detector for detecting the operation of the hydraulic drive device, a first relay connected in series with the operation detector, and the hydraulic drive device. a hydraulic pump and a reservoir tank that receive a predetermined amount of oil; a second relay connected in series with a clutch switching switch of the hydraulic drive device;
A first relay operated by a clutch switching electromagnetic valve disposed in a hydraulic circuit between the clutch switching cylinder and the hydraulic pump and reservoir tank, and a second relay disposed in series with the electromagnetic coil of the clutch switching electromagnetic valve. connected in series to a relay contact (a contact), a brake operating electromagnetic valve disposed in a hydraulic circuit between the brake operating cylinder, the hydraulic pump and the reservoir tank, and the electromagnetic coil of the brake operating electromagnetic valve. a second relay contact (A contact) activated by the second relay, a relay contact (A contact) activated by the first relay, and a third relay contact (B contact) activated by the second relay. ) A valve switching mechanism for a hydraulic drive device, characterized in that it is configured with a series/parallel circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060940U JPH0738310Y2 (en) | 1989-05-29 | 1989-05-29 | Valve switching mechanism of hydraulic drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060940U JPH0738310Y2 (en) | 1989-05-29 | 1989-05-29 | Valve switching mechanism of hydraulic drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH031301U true JPH031301U (en) | 1991-01-09 |
| JPH0738310Y2 JPH0738310Y2 (en) | 1995-08-30 |
Family
ID=31588749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989060940U Expired - Lifetime JPH0738310Y2 (en) | 1989-05-29 | 1989-05-29 | Valve switching mechanism of hydraulic drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738310Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831888A (en) * | 1981-08-21 | 1983-02-24 | 日立建機株式会社 | Brake gear for hydraulic winch |
-
1989
- 1989-05-29 JP JP1989060940U patent/JPH0738310Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831888A (en) * | 1981-08-21 | 1983-02-24 | 日立建機株式会社 | Brake gear for hydraulic winch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738310Y2 (en) | 1995-08-30 |
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