JP2005291078A - Engine driven working machine - Google Patents

Engine driven working machine Download PDF

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JP2005291078A
JP2005291078A JP2004106476A JP2004106476A JP2005291078A JP 2005291078 A JP2005291078 A JP 2005291078A JP 2004106476 A JP2004106476 A JP 2004106476A JP 2004106476 A JP2004106476 A JP 2004106476A JP 2005291078 A JP2005291078 A JP 2005291078A
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engine
work machine
governor lever
solenoid
driven work
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JP4279187B2 (en
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Katsuyuki Fujie
江 勝 之 藤
Yasuhiro Kobayashi
林 泰 浩 小
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Denyo Co Ltd
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Denyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a engine driven working machine capable of phasedly controlling engine speed according to load amount of the working machine with a simple structure. <P>SOLUTION: In the engine driven working machine driving a working machine 51 by an engine 50 and regulating speed by operating a governor lever 60 of the engine to control an operation condition of the working machine, solenoid type drive mechanisms 10, 20 connected to the governor lever and actuating the governor lever to take at least three positions according to control signal, a detection means 30 detecting load amount of the working machine, and a control means 40 forming the control signal having magnitude corresponding to load amount detected by the detection means and giving the drive mechanism the control signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、エンジンにより作業機を駆動するエンジン駆動作業機に係り、とくに作業機の負荷量に応じてエンジンの運転状態を調整するようにしたエンジン駆動作業機に関する。   The present invention relates to an engine-driven work machine that drives a work machine with an engine, and more particularly to an engine-driven work machine that adjusts the operating state of the engine in accordance with the load amount of the work machine.

エンジン駆動作業機は、エンジンにより発電機、圧縮機、ポンプ等を駆動するものであり、工事現場をはじめとする種々の場所で広く利用されている。このエンジン駆動作業機は、通常、一定回転数で運転されるが、手動で特定回転数に切換できるものがある。また、無負荷になったときにエンジンを低速回転にするスローダウン機能を持つものもある(特許文献１参照)。   The engine-driven work machine drives a generator, a compressor, a pump, and the like by an engine, and is widely used in various places including a construction site. This engine-driven work machine is normally operated at a constant rotation speed, but there is one that can be manually switched to a specific rotation speed. Some have a slow-down function for rotating the engine at a low speed when no load is applied (see Patent Document 1).

さらに、エンジンのガバナレバーと連繋して動作可能なチェンジレバーをガバナレバーの近傍に設け、これらレバーをリニアソレノイドにより操作して低速、中速、高速で回転するものもある(特許文献２参照)。   In addition, there are some change levers that are operable in conjunction with the governor levers of the engine in the vicinity of the governor levers, and these levers are operated by a linear solenoid to rotate at low speed, medium speed, and high speed (see Patent Document 2).

図６は、特許文献２に開示された速度制御装置の構成である。つまり、ガバナに取り付けられた速度制御レバー２０２が、制御軸２０３を中心にして回動可能に支持され、この制御軸２０３の図示上方に戻しばね２０４の一端が掛止され、他端がエンジン側壁に掛止されて速度制御レバー２０２が高速側に引かれるような構成となっている。   FIG. 6 shows the configuration of the speed control device disclosed in Patent Document 2. That is, the speed control lever 202 attached to the governor is supported so as to be rotatable about the control shaft 203, one end of the return spring 204 is hooked above the control shaft 203 in the figure, and the other end is the engine side wall. And the speed control lever 202 is pulled to the high speed side.

制御軸２０３を中心にして、戻しばね２０４の掛止されている位置の反対側には、連結部材２０１により速度制御レバー２０２および第１ソレノイド２００が連結されている。   The speed control lever 202 and the first solenoid 200 are connected by a connecting member 201 on the opposite side of the position where the return spring 204 is hooked with the control shaft 203 as the center.

また、速度制御レバー２０２の回動角度を規制するチェンジレバー２２２の枢軸２２３が速度制御レバー２０２の近傍に配され、チェンジレバー２２２の枢軸２２３よりも図上左側に戻しばね２２４の一端が掛止され、他端がエンジン側壁(図示せず)に掛止されて、中間回転数を決定するストッパ２２５に当接するように構成されている。枢軸２２３を中心として、戻しばね２２４が掛止されている位置の反対側には、連結部材２２１により第２ソレノイド２２０が連結されている。   Further, the pivot 223 of the change lever 222 that regulates the rotation angle of the speed control lever 202 is arranged in the vicinity of the speed control lever 202, and one end of the return spring 224 is latched on the left side in the drawing from the pivot 223 of the change lever 222. The other end is hooked to the engine side wall (not shown) and is configured to come into contact with a stopper 225 that determines the intermediate rotational speed. A second solenoid 220 is connected by a connecting member 221 to the opposite side of the position where the return spring 224 is hooked around the pivot 223.

チェンジレバー２２２は、第２ソレノイド２２０がオフのときにストッパ２２５に当接しており、この状態で第１ソレノイド２００をオンにすると連結部材２０１および第１ソレノイド２００の軸のストロークにより所定の最低回転数を実現できる速度制御レバーの位置２０２ｂとなる。また、第１ソレノイド２００をオフにすると、速度制御レバー２０２はチェンジレバー２２２に当接し、中間回転数が実現できる。   The change lever 222 is in contact with the stopper 225 when the second solenoid 220 is off. When the first solenoid 200 is turned on in this state, the change lever 222 rotates at a predetermined minimum by the stroke of the shaft of the connecting member 201 and the first solenoid 200. The position 202b of the speed control lever can be realized. When the first solenoid 200 is turned off, the speed control lever 202 comes into contact with the change lever 222, and an intermediate rotational speed can be realized.

次に、この状態で第２ソレノイド２２０をオンにすると、チェンジレバー２２２は、時計方向に位置２２２ａまで回動し、それに伴って速度制御レバー２０２が位置２０２ａとなって制御軸２０３を反時計方向に回動し所定の最高回転数を実現する。
特開2000-184795号公報 特開平11-6447号公報 Next, when the second solenoid 220 is turned on in this state, the change lever 222 rotates clockwise to the position 222a, and accordingly, the speed control lever 202 becomes the position 202a and the control shaft 203 is counterclockwise. To achieve a predetermined maximum rotational speed.
Japanese Unexamined Patent Publication No. 2000-184795 Japanese Unexamined Patent Publication No. 11-6447

特許文献１に示されたスローダウン装置では、作業機の負荷があるかないかのみの回転制御であり、負荷量に応じた回転制御はできないため、燃料消費率の低下および騒音低下が不十分である。   In the slow down device shown in Patent Document 1, rotation control is performed only on whether there is a load on the work machine, and rotation control according to the load amount cannot be performed. Therefore, the fuel consumption rate and the noise are not sufficiently reduced. is there.

また、特許文献２に開示されているエンジン回転数を３段階に制御するものは、そのように設計されたエンジンにのみ適用されるもので、汎用エンジンには適用できない。また、４段階の回転数制御を行おうとすると、速度制御レバー近傍のスペースが問題になる場合もあり、実現できないこともある。さらに、油圧シリンダ装置を用いてチェンジレバーを任意位置に回動させることにより４段階以上のエンジン回転数を実現するとの開示もあるが、エンジン近傍の温度変化により油圧シリンダ内のオイルが膨張、収縮を起こしてチェンジレバーの位置を変動させるから所定の回転数が得られない場合もある。   Moreover, what controls the engine speed disclosed in Patent Document 2 in three stages is applicable only to an engine designed as such, and cannot be applied to a general-purpose engine. In addition, when performing four-stage rotation speed control, the space near the speed control lever may be a problem and may not be realized. Furthermore, although there is a disclosure that the change lever is rotated to an arbitrary position by using a hydraulic cylinder device, the engine speed of four or more stages is realized, but the oil in the hydraulic cylinder expands and contracts due to a temperature change in the vicinity of the engine. In some cases, the predetermined rotation speed cannot be obtained because the position of the change lever is changed.

本発明は、上述の点を考慮してなされたもので、簡単な構成であってエンジンの回転数を作業機の負荷量に応じて段階的に制御し得るエンジン駆動作業機を提供することを目的とする。   The present invention has been made in consideration of the above-described points, and provides an engine-driven work machine having a simple configuration and capable of controlling the rotational speed of the engine in stages according to the load amount of the work machine. Objective.

上記目的達成のため、本発明では、
エンジンにより作業機を駆動するエンジン駆動作業機であって、前記エンジンのガバナレバーを操作して回転数を調整し、前記作業機の運転状態を制御するようにしたエンジン駆動作業機において、前記ガバナレバーに連結され、制御信号に応じて前記ガバナレバーを少なくとも３位置を採るように作動させるソレノイド式駆動機構と、前記作業機の負荷量を検出する検出手段と、前記検出手段が検出した負荷量に応じた大きさを持つ前記制御信号を形成し、該制御信号を前記駆動機構に与える制御手段とをそなえることを特徴とするエンジン駆動作業機、
を提供するものである。 In order to achieve the above object, in the present invention,
An engine-driven work machine that drives a work machine with an engine, wherein an engine governor lever is operated to adjust a rotation speed to control an operating state of the work machine. A solenoid-type drive mechanism that is connected and operates the governor lever to take at least three positions in accordance with a control signal, a detection unit that detects a load amount of the work implement, and a load amount detected by the detection unit An engine-driven work machine comprising: control means for forming the control signal having a magnitude and providing the control signal to the drive mechanism;
Is to provide.

本発明は上述のように、負荷量に応じて形成された制御信号をソレノイド式駆動機構に与え、ガバナレバーを少なくとも３位置を採るように作動させるようにしたため、負荷量減少時にはエンジン回転数を下げ、負荷量が増したときは回転数を増して負荷量に応じた運転を行うことができる。   As described above, according to the present invention, the control signal formed according to the load amount is applied to the solenoid-type drive mechanism, and the governor lever is operated so as to take at least three positions. When the load amount increases, the number of rotations can be increased and operation according to the load amount can be performed.

以下、図１ないし図５を参照して本発明の実施例を説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS.

図１は、本発明の一実施例の構成を示す概念的説明図である。この実施例は、２つのロータリーソレノイド１０，２０を用いたソレノイド式駆動機構によりエンジン５０のガバナレバー６０を作動させ、エンジン５０の出力調整を行うものである。   FIG. 1 is a conceptual explanatory diagram showing the configuration of an embodiment of the present invention. In this embodiment, the governor lever 60 of the engine 50 is operated by a solenoid-type drive mechanism using two rotary solenoids 10 and 20, and the output of the engine 50 is adjusted.

このために、例えば発電機である作業機５１から出力線５５に供給される負荷量を検出手段３０によって検出し、検出信号を制御手段４０に与えると、制御手段４０が制御信号を形成して２つのロータリーソレノイド１０，２０に与えてその回動を行わせ、連結部材８０を介してガバナレバー６０に伝達する。   For this purpose, for example, when the detection means 30 detects the amount of load supplied to the output line 55 from the work machine 51, which is a generator, and supplies the detection signal to the control means 40, the control means 40 forms a control signal. The two rotary solenoids 10 and 20 are given rotation to transmit to the governor lever 60 via the connecting member 80.

２つのロータリーソレノイド１０，２０は、連結部材８０によってガバナレバー６０に連結され、かつ相互が連結されている。連結部材８０は、２つのロッド８０ａ，８０ｂが結合部材８０ｄにより結合されたもので、ロッド８０ａの端部はガバナレバー６０に結合され、もう一つのロッド８０ｂの端部は第１ソレノイド１０の回動レバー１１に結合されている。   The two rotary solenoids 10 and 20 are connected to the governor lever 60 by a connecting member 80 and are connected to each other. The connecting member 80 includes two rods 80a and 80b coupled by a coupling member 80d. The end of the rod 80a is coupled to the governor lever 60, and the other rod 80b is pivoted by the first solenoid 10. The lever 11 is coupled.

結合部材８０ｄは、両端部に長さ調整用の雌ネジを有し、例えば右端が右ネジとしたら左端は左ネジで形成されており、結合部材８０ｄを回転することにより左右のロッド８０ａや８０ｂが結合部材８０ｄに出入して長さ調整が行われ、ナット８０ｅの締付けで結合部材８０ｄとロッド８０ｂの回転が阻止される。そして、ロッド８０ｂのほぼ中央部に当接部材８０ｃが設けられており、この当接部材８０ｃに第２ソレノイド２０の回動レバー２１が当接する。   The coupling member 80d has female screws for length adjustment at both ends. For example, if the right end is a right thread, the left end is a left thread. By rotating the coupling member 80d, the left and right rods 80a and 80b are formed. Enters and exits the coupling member 80d and the length is adjusted, and the rotation of the coupling member 80d and the rod 80b is prevented by tightening the nut 80e. A contact member 80c is provided at substantially the center of the rod 80b, and the rotating lever 21 of the second solenoid 20 contacts the contact member 80c.

第１ソレノイド１０および第２ソレノイド２０は、通電つまり制御信号が与えられることにより所定角度回動するもので、図示の場合反時計方向に所定角度回動する。   The first solenoid 10 and the second solenoid 20 are rotated by a predetermined angle when energized, that is, given a control signal, and are rotated counterclockwise by a predetermined angle in the illustrated case.

連結部材８０の図示右端が結合されているガバナレバー６０は、ストッパ６１,６２により規制される範囲で回動可能であり、コイルばね６３により時計方向の回動付勢がされており、ロータリーソレノイド１０，２０は、この回動付勢力に抗してガバナレバー６０を反時計方向に回動させる。   The governor lever 60 to which the illustrated right end of the connecting member 80 is coupled is rotatable within a range regulated by the stoppers 61 and 62, and is urged clockwise by the coil spring 63. The rotary solenoid 10 , 20 rotate the governor lever 60 counterclockwise against this rotational biasing force.

図２(a),(b),(c)は、第１ソレノイド１０、第２ソレノイド２０のオン、オフによるガバナレバー６０の回動状態を示したものである。これら第１および第２のソレノイド１０，２０は、アクチュエータ取付台１２０上に取り付けられている。   FIGS. 2A, 2B, and 2C show the rotating state of the governor lever 60 when the first solenoid 10 and the second solenoid 20 are turned on and off. These first and second solenoids 10 and 20 are mounted on an actuator mounting base 120.

図２(a)に示す状態では、第１ソレノイド１０、第２ソレノイド２０がともにオフであり、ガバナレバー６０は、コイルばね６３によりストッパ６１に当接するまで時計方向に引かれて「低速」位置となる。   In the state shown in FIG. 2A, both the first solenoid 10 and the second solenoid 20 are off, and the governor lever 60 is pulled clockwise until it abuts against the stopper 61 by the coil spring 63 to reach the “low speed” position. Become.

図２(b)に示す状態では、第２ソレノイド２０の回動レバー２１の図示上方端が当接部材８０ｃに当接して連結部材８０を図示左方に引くが、ある程度回動すると回動レバー２１の図示下端がストッパ１２１に当接して回動停止する。   In the state shown in FIG. 2 (b), the upper end of the rotating lever 21 of the second solenoid 20 in contact with the contact member 80c pulls the connecting member 80 to the left in the drawing. The lower end of the figure 21 comes into contact with the stopper 121 and stops rotating.

この停止位置が、連結部材８０の停止位置、つまりガバナレバー６０の中間停止位置であり、エンジンの中間回転数「中速」の運転位置である。   This stop position is the stop position of the connecting member 80, that is, the intermediate stop position of the governor lever 60, and is the operating position of the engine at the intermediate speed “medium speed”.

そして、図２(c)に示す状態では、第１ソレノイド１０がオンになり、ガバナレバー６０は、ストッパ６２により規制される「高速」位置まで反時計方向に回動し、また第１ソレノイド１０がオフで第２ソレノイド２０のみがオンであると、ストッパ１２１により規制される中間位置を採る。   In the state shown in FIG. 2C, the first solenoid 10 is turned on, the governor lever 60 is rotated counterclockwise to the “high speed” position regulated by the stopper 62, and the first solenoid 10 is turned on. When it is off and only the second solenoid 20 is on, an intermediate position regulated by the stopper 121 is taken.

したがって、制御手段４０は、検出手段３０からの検出信号が負荷量「大」を示していれば第１ソレノイド１０のみをオンにすることで足りるが、外部の負荷変動による回転変動を極力少なくするために第２ソレノイド２０もオンとし、負荷量「中」であれば第２ソレノイド２０のみをオンにし、負荷ゼロであれば両ソレノイド１０，２０をオフにする。   Therefore, the control means 40 only needs to turn on the first solenoid 10 if the detection signal from the detection means 30 indicates the load amount “high”. However, the control means 40 minimizes rotational fluctuations due to external load fluctuations. Therefore, the second solenoid 20 is also turned on. If the load amount is “medium”, only the second solenoid 20 is turned on. If the load is zero, both solenoids 10 and 20 are turned off.

図３は、本発明の他の実施例を示したものである。この実施例は、作業機５１が発電機であり、この発電機５１の出力をインバータ５２を介して負荷に供給する構成である場合に好適である。   FIG. 3 shows another embodiment of the present invention. This embodiment is suitable when the working machine 51 is a generator and the output of the generator 51 is supplied to a load via an inverter 52.

この場合、発電機の出力は、所定周波数である必要がなく、負荷量に応じて運転周波数を大幅に変更することができる。そこで、検出手段３０により検出した負荷量の検出信号を制御手段４０に与え、制御手段は適宜数設けられたロータリーソレノイド１０，２０，…２０ｎをオン、オフさせてガバナレバー６０(図１、図２)を多段位置取りするように動作させ、エンジンを多段速度制御する。   In this case, the output of the generator does not need to be a predetermined frequency, and the operation frequency can be changed greatly according to the load amount. Therefore, a detection signal of the load amount detected by the detection means 30 is given to the control means 40, and the control means turns on and off the appropriate number of rotary solenoids 10, 20,... 20n to turn the governor lever 60 (FIGS. 1 and 2). ) Is operated so as to be positioned in multiple stages, and the engine is controlled in multiple stages.

図４は、エンジンの速度を、停止を含めて４段階(０，Ｎ０，Ｎ１，Ｎ２)に速度制御する場合のエンジン速度の時間的変化の様子を示したタイムチャートであり、説明の都合上発電機出力も併せて示している。   FIG. 4 is a time chart showing the temporal change of the engine speed when the engine speed is controlled in four stages (0, N0, N1, N2) including the stop, for convenience of explanation. The generator output is also shown.

運転操作により、当初停止していたエンジン駆動作業機を始動させて速度Ｎ０まで昇速させる。以後、発電機負荷が投入され負荷が増え続けると発電機出力が上昇していき中負荷ＰＭに達する。この段階で、エンジン速度をさらに速度Ｎ１まで上昇させる指示が制御手段４０により出力される。   By the driving operation, the engine-driven work machine that was initially stopped is started and increased to the speed N0. Thereafter, when the generator load is turned on and the load continues to increase, the generator output increases and reaches the medium load PM. At this stage, the control means 40 outputs an instruction to further increase the engine speed to the speed N1.

さらに負荷が増え続けて発電機出力がＰＨを超えると、エンジン速度を最高速度Ｎ２まで上昇させる指示が制御手段４０により出力される。発電機出力ＰＭ，ＰＨをどのように設定してもよいが、仮にＰＨを発電機の定格出力とした場合には、定格出力を超過した運転であるから限られた時間だけの運転とする必要がある。   If the load continues to increase and the generator output exceeds PH, the control means 40 outputs an instruction to increase the engine speed to the maximum speed N2. The generator outputs PM and PH may be set in any way. However, if PH is set as the rated output of the generator, it is necessary to operate only for a limited time because the operation exceeds the rated output. There is.

そして、負荷の減少に伴いエンジン運転速度をＮ１，Ｎ０と低下させていき、負荷遮断後に停止させる。   As the load decreases, the engine operating speed is decreased to N1 and N0 and stopped after the load is interrupted.

図５は、連結部材８０を、連結器８４およびフレキシブル連結部材８５を介してガバナレバー６０に結合した実施例を示している。この実施例は、エンジン駆動作業機を小型化する際に、アクチュエータをエンジンから離して設置するようにしたものである。   FIG. 5 shows an embodiment in which the connecting member 80 is coupled to the governor lever 60 via the connector 84 and the flexible connecting member 85. In this embodiment, when the engine-driven work machine is reduced in size, the actuator is installed away from the engine.

エンジン駆動作業機は、経済性が良好であるため、種々の用途に利用されているが、小型化が課題となる場合が多い。そこで、アクチュエータをエンジンから離して別置きとするために、ガバナレバー６０と連結部材８０とを、連結部材８４およびフレキシブル連結部材８５により結合する。連結部材８０の図示右端寄り部分をアクチュエータ取付台１２０の支持部１２０ａによって支持する。これにより、エンジンおよび作業機のみの本体と、エンジン制御用要素とを別置きにしても何等問題を生じないエンジン駆動作業機を提供することができる。   Engine-driven work machines are used for various purposes because of their good economic efficiency, but downsizing is often a problem. Therefore, in order to separate the actuator from the engine, the governor lever 60 and the connecting member 80 are connected by the connecting member 84 and the flexible connecting member 85. A portion closer to the right end in the figure of the connecting member 80 is supported by the support portion 120 a of the actuator mounting base 120. As a result, it is possible to provide an engine-driven work machine that does not cause any problems even if the main body of only the engine and the work machine and the engine control element are separately provided.

本発明の一実施例の構成を示す説明図。Explanatory drawing which shows the structure of one Example of this invention. 図２(a),(b),(c)は、第１ソレノイド１０および第２ソレノイド２０のオン、オフによるガバナレバー６０の回動状態を示した動作説明図。FIGS. 2A, 2B, and 2C are operation explanatory views showing the rotating state of the governor lever 60 when the first solenoid 10 and the second solenoid 20 are turned on and off. 図３は、本発明の他の実施例を示す要部説明図。FIG. 3 is an explanatory view of a main part showing another embodiment of the present invention. 図３の実施例により、エンジンの速度を、停止を含めて４段階に速度制御する場合のエンジン速度および作業機である発電機出力の時間的変化の様子を示したタイムチャート。The time chart which showed the mode of the time change of the engine speed and the generator output which is a working machine at the time of carrying out speed control of the engine speed in four steps including a stop by the Example of FIG. 図５は、連結部材８０を、連結器８４およびフレキシブル連結部材８５を介してガバナレバー６０に結合した本発明の他の実施例を示す説明図。FIG. 5 is an explanatory view showing another embodiment of the present invention in which the connecting member 80 is coupled to the governor lever 60 via the coupler 84 and the flexible connecting member 85. 従来の速度制御装置に用いた機構を示す説明図。Explanatory drawing which shows the mechanism used for the conventional speed control apparatus.

符号の説明Explanation of symbols

１０ 第１ソレノイド、２０ 第２ソレノイド、３０ 検出手段、
４０ 制御手段、５０ エンジン、５１ 作業機(発電機)、５５ 出力線、
６０ ガバナレバー、６１，６２，１２１ ストッパ、６３ 戻しばね、
８０ 連結部材、８０ａ，８０ｂ ロッド、８０ｃ 当接部材、
８０ｄ 結合部材、８０ｅ ナット、８４ 連結器、
１２０ アクチュエータ取付台、１２０ａ 支持部。 10 1st solenoid, 20 2nd solenoid, 30 detection means,
40 control means, 50 engine, 51 working machine (generator), 55 output line,
60 governor lever, 61, 62, 121 stopper, 63 return spring,
80 connecting member, 80a, 80b rod, 80c contact member,
80d coupling member, 80e nut, 84 coupler,
120 Actuator mount, 120a Support part.

Claims (4)

エンジンにより作業機を駆動するエンジン駆動作業機であって、前記エンジンのガバナレバーを操作して回転数を調整し、前記作業機の運転状態を制御するようにしたエンジン駆動作業機において、
前記ガバナレバーに連結され、制御信号に応じて前記ガバナレバーを少なくとも３位置を採るように作動させるソレノイド式駆動機構と、
前記作業機の負荷量を検出する検出手段と、
前記検出手段が検出した負荷量に応じた大きさを持つ前記制御信号を形成し、該制御信号を前記ソレノイド式駆動機構に与える制御手段と
をそなえることを特徴とするエンジン駆動作業機。 An engine-driven work machine that drives a work machine with an engine, wherein an engine governor lever is operated to adjust a rotation speed, and an operation state of the work machine is controlled.
A solenoid type drive mechanism coupled to the governor lever and actuating the governor lever to take at least three positions in response to a control signal;
Detecting means for detecting a load amount of the work implement;
An engine-driven work machine comprising: control means for forming the control signal having a magnitude corresponding to the load detected by the detecting means and supplying the control signal to the solenoid-type drive mechanism. 請求項1記載のエンジン駆動作業機において、
前記ガバナレバーは、ばねにより一方向に回動付勢されており、
前記ソレノイド式駆動機構は、制御信号が与えられることによりそれぞれ所定角度回転する、少なくとも第１および第２のロータリーソレノイドが連結されて構成されたものであり、
前記第１のロータリーソレノイドにより前記ばねによる回動付勢に抗して前記ガバナレバーを所要角度回動させ、前記第２のロータリーソレノイドにより前記ガバナレバーをさらに所要角度回動させるようにしたエンジン駆動作業機。 In the engine-driven work machine according to claim 1,
The governor lever is urged to rotate in one direction by a spring,
The solenoid-type drive mechanism is configured by connecting at least first and second rotary solenoids, each of which rotates by a predetermined angle when a control signal is given,
An engine-driven work machine in which the governor lever is rotated by a required angle against the biasing force of the spring by the first rotary solenoid, and the governor lever is further rotated by the required angle by the second rotary solenoid. . 請求項２記載のエンジン駆動作業機において、
前記ガバナレバーは、第１および第２のストッパにより最小回動角および最大回動角が規制されており、
前記第１のロータリーソレノイドは、第３のストッパにより前記最小回動角と前記最大回動角との中間の回動角で回動が規制されるエンジン駆動作業機。 The engine-driven work machine according to claim 2,
The governor lever has a minimum rotation angle and a maximum rotation angle regulated by the first and second stoppers,
The first rotary solenoid is an engine-driven work machine whose rotation is regulated by a third stopper at an intermediate rotation angle between the minimum rotation angle and the maximum rotation angle. 請求項1記載のエンジン駆動作業機において、
前記ガバナレバーと前記駆動機構とは、フレキシブル連結部材を含む連結部材により連結されたエンジン駆動作業機。 In the engine-driven work machine according to claim 1,
The governor lever and the drive mechanism are engine-driven work machines connected by a connecting member including a flexible connecting member.
JP2004106476A 2004-03-31 2004-03-31 Engine driven work machine Expired - Lifetime JP4279187B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198245A (en) * 2006-01-26 2007-08-09 Honda Motor Co Ltd Engine driven work machine
JP2007224897A (en) * 2006-01-26 2007-09-06 Honda Motor Co Ltd Engine-driven work machine
WO2012029462A1 (en) * 2010-08-31 2012-03-08 株式会社小松製作所 Forklift engine control device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198245A (en) * 2006-01-26 2007-08-09 Honda Motor Co Ltd Engine driven work machine
JP2007224897A (en) * 2006-01-26 2007-09-06 Honda Motor Co Ltd Engine-driven work machine
JP4673823B2 (en) * 2006-01-26 2011-04-20 本田技研工業株式会社 Engine-driven work machine
JP4685645B2 (en) * 2006-01-26 2011-05-18 本田技研工業株式会社 Engine-driven work machine
WO2012029462A1 (en) * 2010-08-31 2012-03-08 株式会社小松製作所 Forklift engine control device
JP2012052457A (en) * 2010-08-31 2012-03-15 Komatsu Ltd Forklift engine control device
CN102859155A (en) * 2010-08-31 2013-01-02 株式会社小松制作所 Forklift engine control device
US8996259B2 (en) 2010-08-31 2015-03-31 Komatsu Ltd. Forklift engine control device

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