JPS6253668U

JPS6253668U -

Info

Publication number: JPS6253668U
Application number: JP14290585U
Authority: JP
Priority date: 1985-09-20
Filing date: 1985-09-20
Publication date: 1987-04-03
Also published as: JPH036189Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る自動制御装置の全体構成
を示すブロツク回路図、第２図は本考案が適用さ
れる自動枝打機を概略的に示す一部破断側面図、
第３図は自動制御装置の動作を示すタイミングチ
ヤート、第４図はクラツチ外環回転センサの構成
図、第５図はクラツチ外環回転センサの信号発生
原理図、第６図は自動制御装置の具体回路例図、
第７図は初期状態検知回路の各部出力波形を示す
タイミングチヤートである。図面において、２，３はプーリ、４は無端駆動
ベルト、６は減速機及び回転方向転換機、７は内
燃機関、９はチエーン案内バー、１０は無端鋸刃
チエーン、１２は制御回路ユニツト、１３は発振
器、１４はクラツチ外環回転センサ、２６はクラ
ツチ外環、２７は電磁式ピツクアツプコイル、Ａ
は初期状態検知回路、Ｂはダウン・アツプ信号出
力回路、Ｃはストツプ信号出力回路である。 FIG. 1 is a block circuit diagram showing the overall configuration of an automatic control device according to the present invention, and FIG. 2 is a partially cutaway side view schematically showing an automatic pruning machine to which the present invention is applied.
Fig. 3 is a timing chart showing the operation of the automatic control device, Fig. 4 is a configuration diagram of the clutch outer ring rotation sensor, Fig. 5 is a diagram of the signal generation principle of the clutch outer ring rotation sensor, and Fig. 6 is a diagram of the automatic control device. Specific circuit example diagram,
FIG. 7 is a timing chart showing output waveforms of each part of the initial state detection circuit. In the drawing, 2 and 3 are pulleys, 4 is an endless drive belt, 6 is a speed reducer and rotation direction changer, 7 is an internal combustion engine, 9 is a chain guide bar, 10 is an endless saw blade chain, 12 is a control circuit unit, 13 14 is an oscillator, 14 is a clutch outer ring rotation sensor, 26 is a clutch outer ring, 27 is an electromagnetic pickup coil, A
1 is an initial state detection circuit, B is a down/up signal output circuit, and C is a stop signal output circuit.

Claims

[Scope of utility model registration request]

In an automatic pruning machine including a prime mover, an endless saw blade chain operated by the power thereof, and a device for raising and lowering the tree trunk while turning around it, a centrifugal clutch transmits the power from the prime mover to the endless saw blade chain. a clutch outer ring rotation sensor that detects the rotation or stoppage of the clutch outer ring and generates a clutch signal; an oscillator that generates a clock pulse; and a clutch outer ring rotation sensor that receives the clutch signal and the clock pulse; A down/up signal output circuit outputs a down signal and an up signal for raising and lowering the branching machine body, respectively, and a down/up signal output circuit receives the clutch signal and the clock pulse and outputs a branching signal from the down/up signal output circuit. An automatic pruning machine characterized by comprising: a prime mover control signal output circuit that outputs a prime mover control signal to reduce the rotational speed of the prime mover to a rotational speed at which the centrifugal clutch is disengaged when the biting that allows the cutting machine body to be raised and lowered cannot be released. Automatic control device.