JPH0342855U - - Google Patents
Info
- Publication number
- JPH0342855U JPH0342855U JP1989103670U JP10367089U JPH0342855U JP H0342855 U JPH0342855 U JP H0342855U JP 1989103670 U JP1989103670 U JP 1989103670U JP 10367089 U JP10367089 U JP 10367089U JP H0342855 U JPH0342855 U JP H0342855U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- control valve
- prime mover
- rotational speed
- pressure
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 230000001934 delay Effects 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Description
第１図はクレーム対応図である。第２図および
第３図は本考案をホイール式油圧シヨベルに適用
した場合の一実施例であり、第２図はその全体構
成図、第３図はその処理手順例を示すフローチヤ
ートである。第４図および第５図は本発明の第２
の実施例を示す全体構成図およびフローチヤート
である。第６図は従来の原動機回転数制御装置の
全体構成図である。
１……油圧ポンプ、５……パイロツト用油圧ポ
ンプ、７……スローリターン弁、２……油圧パイ
ロツト式制御弁、４……油圧モータ、６……パイ
ロツト弁、６ａ……走行ペダル、２１……エンジ
ン、２１ａ……ガバナ、２３……パルスモータ、
２５……ポテンシヨメータ、３０……制御回路、
３１……圧力スイツチ、３４……エンジン回転数
設定器、１０１……原動機、１０２……油圧ポン
プ、１０３……油圧モータ、１０４……油圧パイ
ロツト式制御弁、１０５……パイロツト油圧源、
１０６……操作手段、１０７……スローリターン
弁、１０８……検出手段、１０９……演算手段、
１１０……原動機制御手段。
FIG. 1 is a complaint correspondence diagram. FIGS. 2 and 3 show an embodiment in which the present invention is applied to a wheeled hydraulic excavator. FIG. 2 is an overall configuration diagram thereof, and FIG. 3 is a flowchart showing an example of its processing procedure. FIGS. 4 and 5 show the second embodiment of the present invention.
1 is an overall configuration diagram and a flowchart showing an example of the present invention. FIG. 6 is an overall configuration diagram of a conventional prime mover rotation speed control device. DESCRIPTION OF SYMBOLS 1... Hydraulic pump, 5... Pilot hydraulic pump, 7... Slow return valve, 2... Hydraulic pilot type control valve, 4... Hydraulic motor, 6... Pilot valve, 6a... Travel pedal, 21... ...Engine, 21a...Governor, 23...Pulse motor,
25... Potentiometer, 30... Control circuit,
31... Pressure switch, 34... Engine speed setting device, 101... Prime mover, 102... Hydraulic pump, 103... Hydraulic motor, 104... Hydraulic pilot control valve, 105... Pilot hydraulic power source,
106... Operating means, 107... Slow return valve, 108... Detecting means, 109... Calculating means,
110...Motor control means.
Claims (1)
されて車両を走行させる走行用油圧モータと、 前記油圧ポンプからの吐出油を流量制御して前
記油圧モータの作動を制御する油圧パイロツト式
制御弁と、 パイロツト油圧源からのパイロツト油圧を減圧
して前記制御弁を操作する操作手段と、 この操作手段と前記制御弁との間に設けられ、
前記制御弁からの戻り油を遅延させて該制御弁の
中立位置への復帰を遅延させるスローリターン弁
とを備えた油圧走行車両の原動機回転数制御装置
において、 前記スローリターン弁と制御弁との間の管路圧
力を検出する検出手段と、 少なくともある圧力範囲ではこの検出手段で検
出された圧力が大きいほど原動機回転数が高くな
るように目標回転数を演算する演算手段と、 前記原動機の回転数を前記演算された目標回転
数となるよう制御する原動機制御手段とを具備す
ることを特徴とする油圧走行車両の原動機回転数
制御装置。[Scope of Claim for Utility Model Registration] A hydraulic pump driven by a prime mover, a travel hydraulic motor driven by pressure oil discharged from the hydraulic pump to drive a vehicle, and a flow rate control of the oil discharged from the hydraulic pump. a hydraulic pilot type control valve for controlling the operation of the hydraulic motor; an operating means for operating the control valve by reducing pilot hydraulic pressure from a pilot hydraulic pressure source; and a hydraulic pilot type control valve provided between the operating means and the control valve. is,
A motor rotation speed control device for a hydraulic vehicle, comprising a slow return valve that delays return oil from the control valve to delay the return of the control valve to a neutral position, wherein the slow return valve and the control valve a detection means for detecting the pipe line pressure between the two; a calculation means for calculating a target rotation speed so that the higher the pressure detected by the detection means, the higher the rotation speed of the prime mover in at least a certain pressure range; and rotation of the prime mover. A prime mover rotational speed control device for a hydraulically driven vehicle, comprising: a prime mover control means for controlling the rotational speed so that the rotational speed becomes the calculated target rotational speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989103670U JPH0745651Y2 (en) | 1989-09-04 | 1989-09-04 | Engine speed control device for hydraulically driven vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989103670U JPH0745651Y2 (en) | 1989-09-04 | 1989-09-04 | Engine speed control device for hydraulically driven vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342855U true JPH0342855U (en) | 1991-04-23 |
| JPH0745651Y2 JPH0745651Y2 (en) | 1995-10-18 |
Family
ID=31652493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989103670U Expired - Lifetime JPH0745651Y2 (en) | 1989-09-04 | 1989-09-04 | Engine speed control device for hydraulically driven vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0745651Y2 (en) |
-
1989
- 1989-09-04 JP JP1989103670U patent/JPH0745651Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0745651Y2 (en) | 1995-10-18 |
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