JPH0470361U - - Google Patents
Info
- Publication number
- JPH0470361U JPH0470361U JP11278490U JP11278490U JPH0470361U JP H0470361 U JPH0470361 U JP H0470361U JP 11278490 U JP11278490 U JP 11278490U JP 11278490 U JP11278490 U JP 11278490U JP H0470361 U JPH0470361 U JP H0470361U
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- cab
- engine
- driver
- speed control
- 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
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000000414 obstructive effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図ないし第３図は本考案の実施例を示し、
第１図は油圧シヨベルの制御回路図、第２図は運
転室内の透視図、第３図は回転数制御処理を示す
流れ図、第４図ないし第６図は従来技術を示し、
第４図は油圧シヨベルの全体図、第５図は油圧シ
ヨベルの制御回路図、第６図は回転数制御処理を
示す流れ図である。
１……下部走行体、３……上部旋回体、６……
運転室、８……作業装置、１２，１３，１４……
シリンダ、１５……エンジン、１６……燃料噴射
ポンプ、１７……噴射ポンプ制御装置、１９……
油圧ポンプ、２０……旋回モータ、２５……スロ
ツトルレバー（回転数設定手段）、２６……切換
スイツチ（低回転数指令手段）、３３……制御弁
、３４……操作弁、３４Ａ……操作レバー、３６
……ロツク弁、３６Ａ……ロツクレバー（作動禁
止手段）、４０……ロツクレバーセンサ、４２…
…噴射量制御装置。
1 to 3 show embodiments of the present invention,
Fig. 1 is a control circuit diagram of a hydraulic excavator, Fig. 2 is a perspective view of the inside of the operator's cab, Fig. 3 is a flowchart showing the rotation speed control process, and Figs. 4 to 6 show conventional technology.
FIG. 4 is an overall diagram of the hydraulic excavator, FIG. 5 is a control circuit diagram of the hydraulic excavator, and FIG. 6 is a flowchart showing the rotation speed control process. 1... Lower traveling body, 3... Upper revolving body, 6...
Driver's cabin, 8... Working equipment, 12, 13, 14...
cylinder, 15... engine, 16... fuel injection pump, 17... injection pump control device, 19...
Hydraulic pump, 20... Swivel motor, 25... Throttle lever (rotation speed setting means), 26... Changeover switch (low rotation speed command means), 33... Control valve, 34... Operation valve, 34A... Operation lever, 36
...Lock valve, 36A...Lock lever (operation inhibiting means), 40...Lock lever sensor, 42...
...Injection amount control device.
Claims (1)
油圧ポンプと、該油圧ポンプからの圧油を給排す
ることにより作動する複数のアクチユエータと、
該各アクチユエータを作動すべく作業機の運転室
内に設けられ、前記油圧ポンプからの圧油を該各
アクチユエータに給排させる複数の操作レバーと
、前記作業機の運転室内に設けられ、前記エンジ
ンの回転数を設定する回転数設定手段とからなる
作業機のエンジン回転数制御装置において、前記
作業機の運転室内に設けられ、前記各操作レバー
による各アクチユエータの作動を禁止させる作動
禁止手段と、該作動禁止手段が操作されたときに
、前記エンジンの回転数を所定の低回転数まで低
下させる低回転数制御手段とを備えたことを特徴
とする作業機のエンジン回転数制御装置。 (2) 前記作動禁止手段は運転室の出入口近傍に
設けられたロツクレバーによつて構成し、該ロツ
クレバーは、運転室への乗降に障害となる障害位
置と、運転室への乗降を許す非障害位置とに移動
可能に構成してなる請求項(1)に記載の作業機の
エンジン回転数制御装置。[Claims for Utility Model Registration] (1) An engine, a hydraulic pump driven by the engine, and a plurality of actuators operated by supplying and discharging pressure oil from the hydraulic pump;
A plurality of operating levers are provided in the operator's cab of the work equipment to operate the respective actuators, and supply and discharge pressure oil from the hydraulic pump to each of the actuators; An engine rotation speed control device for a working machine comprising a rotation speed setting means for setting a rotation speed, an operation prohibiting means provided in a driver's cab of the work machine and prohibiting operation of each actuator by each of the operation levers; An engine rotation speed control device for a work machine, comprising: low rotation speed control means for reducing the rotation speed of the engine to a predetermined low rotation speed when the operation inhibiting means is operated. (2) The operation inhibiting means is constituted by a lock lever installed near the entrance/exit of the driver's cab, and the lock lever is located at a position where there is an obstacle to getting in and out of the driver's cab, and at a non-obstructive location where getting in and out of the driver's cab is allowed. 2. The engine rotation speed control device for a working machine according to claim 1, which is configured to be movable between positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990112784U JP2525993Y2 (en) | 1990-10-26 | 1990-10-26 | Engine speed control device for work equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990112784U JP2525993Y2 (en) | 1990-10-26 | 1990-10-26 | Engine speed control device for work equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470361U true JPH0470361U (en) | 1992-06-22 |
| JP2525993Y2 JP2525993Y2 (en) | 1997-02-12 |
Family
ID=31860304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990112784U Expired - Lifetime JP2525993Y2 (en) | 1990-10-26 | 1990-10-26 | Engine speed control device for work equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525993Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863266U (en) * | 1981-10-26 | 1983-04-28 | 三菱重工業株式会社 | control lock device |
| JPS61200042A (en) * | 1985-03-01 | 1986-09-04 | Toyoda Autom Loom Works Ltd | Engine revolution speed controller for high-place working car |
-
1990
- 1990-10-26 JP JP1990112784U patent/JP2525993Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863266U (en) * | 1981-10-26 | 1983-04-28 | 三菱重工業株式会社 | control lock device |
| JPS61200042A (en) * | 1985-03-01 | 1986-09-04 | Toyoda Autom Loom Works Ltd | Engine revolution speed controller for high-place working car |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2525993Y2 (en) | 1997-02-12 |
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