JPH036183Y2 - - Google Patents
Info
- Publication number
- JPH036183Y2 JPH036183Y2 JP2360684U JP2360684U JPH036183Y2 JP H036183 Y2 JPH036183 Y2 JP H036183Y2 JP 2360684 U JP2360684 U JP 2360684U JP 2360684 U JP2360684 U JP 2360684U JP H036183 Y2 JPH036183 Y2 JP H036183Y2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- cam
- engine
- switching lever
- reverse
- 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.)
- Expired
Links
- 238000013138 pruning Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、枝打機におけるエンジンのニードル
操作装置に関する。[Detailed Description of the Invention] The present invention relates to a needle operating device for an engine in a pruning machine.
従来の枝打機は、機枠に搭載したエンジンの気
化器に設けているニードルを手動レバー等にワイ
ヤーで直接連結し、この手動レバーの操作により
ニードルを上下移動してエンジンの回転速度を決
め、このエンジンの回転出力を、木の幹の周囲を
接当抱持した駆動車輪および遊動車輪のうち駆動
車輪に伝達し、幹に対して機体を螺旋上昇させる
他、上方に起立状に装備したチエンソーにも伝達
し、このチエンソーで上昇途中の枝を切断させる
構成となつていた。 In conventional pruning machines, the needle installed in the carburetor of the engine mounted on the machine frame is directly connected to a manual lever etc. with a wire, and the manual lever is operated to move the needle up and down to determine the rotational speed of the engine. The rotational output of this engine is transmitted to the driving wheels of the driving wheels and idle wheels that are held in contact with the periphery of the tree trunk, and in addition to raising the aircraft spirally relative to the tree trunk, it is also installed in an upright position above the tree trunk. The information was also transmitted to the chain saw, which then cut off the branches on the way up.
したがつて、この種枝打機では、走行中に切断
した枝が触れる等によりワイヤー配線が変化し、
これにより、このワイヤーで直接引張つていたニ
ードルの上下調節位置が変化し、エンジンの回転
速度が急に高速に変化し、脱輪、エンスト等を生
じたり、あるいは、低速に変化し、作業能率の低
下を生じる等の不具合があつた。 Therefore, with this type of pruning machine, the wire wiring may change due to contact with cut branches while running, etc.
As a result, the vertical adjustment position of the needle that is directly pulled by this wire changes, and the engine rotational speed suddenly changes to high speed, causing wheel derailment or stalling, or changes to low speed, reducing work efficiency. There were some problems, such as a drop in performance.
そこで、本考案は、正転位置、中立位置および
逆転位置に切換操作できる正逆転切換レバーと連
結した回動カムを介して、ニードルの上下位置を
決定し得る構成とすることで、前記欠点に対処し
たものである。 Therefore, the present invention solves the above-mentioned drawbacks by having a configuration in which the vertical position of the needle can be determined via a rotary cam connected to a forward/reverse switching lever that can be operated to switch between a forward rotation position, a neutral position, and a reverse rotation position. This has been dealt with.
以下本考案の具体的な実施例を図面を参照して
説明する。 Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
本考案を実施する枝打機は、所定上昇リード角
度を付けて駆動車輪2を装着した主枠1に対し
て、同じく遊動車輪4を装着した巻付枠3を片開
閉可能に各上下一端同志を軸着する一方、各上下
遊動他端同志を引張接近させるよう引張バネ5を
係脱可能に取付け、これら車輪2,4で幹6の周
囲を接当抱持するよう構成したものである。そし
て、主枠1には、気化器8に設けたニードル9の
上下移動量によりエンジン回転速度が変化するエ
ンジン7を固設したミツシヨンケース10を取付
け、このケース10に前記駆動車輪2およびチエ
ンソー11を装着している。 The pruning machine implementing the present invention has a main frame 1 on which drive wheels 2 are attached at a predetermined ascending lead angle, and a winding frame 3 on which idle wheels 4 are attached so that they can be opened and closed at one end. A tension spring 5 is removably attached so as to pull the other ends of each vertically movable body toward each other, and the wheels 2 and 4 are configured to abut and hold the stem 6 around the stem 6. A transmission case 10 is attached to the main frame 1, and this case 10 has an engine 7 fixed thereon whose engine speed changes depending on the amount of vertical movement of a needle 9 provided in a carburetor 8. I am wearing 11.
エンジン7の回転は、この出力軸7aを前記ケ
ース10内に突設し、正逆転および中立状態に正
逆転切換クラツチ14により切換可能な正逆転切
換機構13を組込んだギヤ等からなる動力伝達経
路12を介して、前記駆動車輪2に伝達される
他、同じくこのケース10内で適宜減速されチエ
ンソー11にも伝達される。一方、動力伝達経路
12中途から動力を取出して駆動車輪2の回転と
関連回転して計測する所望上昇枝打高さに応じて
任意の高さ設定できる機械式タイマー15により
自動的に、正逆転切換レバー16を取付軸17周
りに回動して正転F位置から逆転R位置に切換え
るとともに、前記クラツチ14を、フオーク18
を介して正転から逆転状態に切換え、駆動車輪2
を正転から逆転駆動に切換えれるよう構成してい
る。なお、この切換レバー16は、正転F位置、
中立N位置および逆転R位置に手動操作も可能
で、特に、この切換レバー16をN位置に係止す
るには、バネ19力で収納姿勢にある係止板20
を切換レバー方向に起こし、この切換レバー係止
板20切欠部に係止すればでき、これに連動して
クラツチ14はフオーク18を介して中立状態に
なり、そして、切換レバー16をこの係止位置
(N位置)からF位置方向に手動切換操作すると、
この係止は離脱してバネ19力で係止板20は自
動的に収納される。 The rotation of the engine 7 is transmitted through a power transmission system such as a gear having an output shaft 7a protruding into the case 10 and incorporating a forward/reverse switching mechanism 13 that can be switched between forward/reverse and neutral states by a forward/reverse switching clutch 14. In addition to being transmitted to the driving wheels 2 via the path 12, the speed is also appropriately decelerated within the case 10 and transmitted to the chain saw 11. On the other hand, a mechanical timer 15 that can set any height according to the desired height of pruning, which is measured by extracting power from the middle of the power transmission path 12 and rotating in relation to the rotation of the drive wheel 2, automatically controls the forward and reverse rotation. The switching lever 16 is rotated around the mounting shaft 17 to switch from the forward rotation F position to the reverse rotation R position, and the clutch 14 is moved to the fork 18.
The driving wheel 2 is switched from normal rotation to reverse rotation via
It is configured so that the drive can be switched from forward rotation to reverse rotation. Note that this switching lever 16 is in the forward rotation F position,
Manual operation is also possible in the neutral N position and the reverse R position, and in particular, in order to lock the switching lever 16 in the N position, the locking plate 20 in the retracted position is activated by the force of the spring 19.
This can be done by raising the switch lever toward the switching lever and locking it in the notch part of the switching lever locking plate 20. In conjunction with this, the clutch 14 enters the neutral state via the fork 18, and then the switching lever 16 is moved to this locking position. When you manually switch from position (N position) to F position,
This locking is released and the locking plate 20 is automatically retracted by the force of the spring 19.
ところで、本考案に係るエンジンのニードル操
作装置Aは、上方にバネ21で付勢しているニー
ドル9の上端部を気化器8のケース8a内から突
出し、この上端部の近傍位置に、回動軸23周り
に回動可能な回動カム22を設け、このカム適所
に立設した取付ピン24周りに回動自在に嵌合し
たワイヤー取付体25と切換レバー16間をアウ
ターおよびインナーからなるワイヤー26で連結
するとともに、この取付体25とこの近傍のワイ
ヤー26のアウター側取付部間に圧縮バネ27を
介装し、切換レバー16に連動してカム22が回
動可能に構成している。 By the way, in the engine needle operating device A according to the present invention, the upper end of the needle 9, which is biased upward by the spring 21, protrudes from the case 8a of the carburetor 8, and is rotated to a position near the upper end. A rotating cam 22 that is rotatable around a shaft 23 is provided, and a wire consisting of an outer and an inner wire is connected between a wire attachment body 25 that is rotatably fitted around a mounting pin 24 that is set upright at a proper position on the cam, and the switching lever 16. 26, and a compression spring 27 is interposed between the attachment body 25 and the outer attachment portion of the wire 26 in the vicinity, so that the cam 22 can rotate in conjunction with the switching lever 16.
また、カム22とニードル9間にカム22の周
面にバネ28を介して弾性摺接するとともに、ニ
ードル9上端半球面がバネ21を介して弾性摺接
するよう軸30周りに回動可能な正面視L字形の
従動レバー29が介装され、これによりカム22
との弾性摺接軌跡をニードル9に伝達し、ニード
ル9の上下位置を変更し得るようにしている。 Further, the cam 22 and the needle 9 are in elastic sliding contact with the circumferential surface of the cam 22 via a spring 28, and the upper hemispherical surface of the needle 9 is in elastic sliding contact via the spring 21 when viewed from the front. An L-shaped driven lever 29 is interposed, whereby the cam 22
The locus of elastic sliding contact with the needle 9 is transmitted to the needle 9, so that the vertical position of the needle 9 can be changed.
カム22の形状は、切換レバー16が各F,
N,R位置にあるときの従動レバー29と弾性摺
接するカム22の弾性摺接上死点がカム中心より
適宜距離となるよう漸次滑らかに凸凹形成され、
そして、このように形成されたカム22と弾性摺
接する従動レバー29を介して、ニードル9の上
下位置が切換レバー16の各F,N,R位置に対
応して決定されるのである。この場合、切換レバ
ー16の各F,N,R位置への切換えにより回動
するカム22の回動角のバラツキに対しても、前
述のカム形状により、各F,N,R位置に対する
ニードル9の上下位置への影響は極めて少ないも
のとなる。本実施例では、自重作用、下降時には
チエンソー11は枝切断しないこと、等を考慮し
て、カム中心より前述の各上死点位置までの距離
を、切換レバー16がF位置にあるときを最大に
し、N位置にあるときを最小、R位置にあるとき
をその中間となるよう凸凹波状にカム形状を形成
しているので、ニードルの上下位置は、切換レバ
ーがF,R,N位置にあるときこの順序で下方に
下がることになり、これにより、エンジン7の回
転速度は順次下がることになる。 The shape of the cam 22 is such that the switching lever 16 is
The cam 22 is gradually and smoothly formed with concavities and convexities so that the top dead center of the elastic sliding contact of the cam 22 in elastic sliding contact with the driven lever 29 when in the N and R positions is at an appropriate distance from the center of the cam.
The vertical position of the needle 9 is determined corresponding to each of the F, N, and R positions of the switching lever 16 via the driven lever 29 that is in elastic sliding contact with the cam 22 formed in this manner. In this case, even with variations in the rotation angle of the cam 22 that rotates when the switching lever 16 is switched to each of the F, N, and R positions, the needle 9 for each of the F, N, and R positions is The effect on the vertical position of is extremely small. In this embodiment, taking into consideration the effect of its own weight and the fact that the chain saw 11 does not cut branches when descending, etc., the distance from the cam center to each of the above-mentioned top dead center positions is set to the maximum when the switching lever 16 is in the F position. The cam shape is shaped like a convex and concave wave so that when it is in the N position, it is at its minimum, and when it is in the R position, it is in the middle.The needle's up and down positions are the same as when the switching lever is in the F, R, and N positions. In this order, the rotational speed of the engine 7 decreases in sequence.
なお、カム22には、ストツパー31により回
動規制される安全性向上、組付調整等に便利な切
欠部が形成されている。また、本装置Aは、従動
レバー29を介在することなく、ニードル9上端
部に水平円板を取付け、この上面をカム周面に弾
性摺接させる構成にしてもよい。 The cam 22 has a notch formed therein, which is convenient for improving safety and adjusting the assembly by restricting rotation by the stopper 31. Further, the device A may have a configuration in which a horizontal disk is attached to the upper end of the needle 9 and the upper surface of the horizontal disk is brought into elastic sliding contact with the circumferential surface of the cam, without intervening the driven lever 29.
使用に際しては、本機を幹6に装着して係止板
20を起こし切換レバー16をN位置にセツト
し、これに連動作動するカム22、従動レバー2
9を介してニードル9を下方に下げてエンジン7
を始動し、機械式タイマー15の所望枝打設定ダ
イヤル15aを所望する枝打高さにセツトした
後、切換レバー16をF位置に切換操作すると、
これに連動するカム22を介してニードル9は上
方に移動しエンジン回転速度を上げるとともに、
同じくこれに連動するフオーク18を介してクラ
ツチ14を中立から正転側に切換え、このエンジ
ンの回転動力を動力伝達経路12を経て駆動車輪
2に伝達し正転駆動し、幹6に対して所望枝打設
定高さまで螺旋上昇させる一方、チエンソー11
にも伝達され、これにより上昇途中の枝が切断さ
れる。そして、所望枝打設定高さまで上昇する
と、機械式タイマー15が作動し、切換レバー1
6を自動的にR位置に切換え、これに連動するカ
ム22を介してニードル9をやや下げ、エンジン
回転速度をこの分下げるとともに、これに連動す
るフオーク18を介してクラツチ14を逆転側に
切換え、これにより駆動車輪2は逆転に切換わ
り、機体は自重作用と相まつて下降してくるので
ある。 When in use, the machine is attached to the trunk 6, the locking plate 20 is raised, the switching lever 16 is set to the N position, and the cam 22 and the driven lever 2, which operate in conjunction with this, are
9, lower the needle 9 downward and connect the engine 7.
After starting the machine and setting the desired pruning setting dial 15a of the mechanical timer 15 to the desired pruning height, when the switching lever 16 is switched to the F position,
The needle 9 moves upward via the cam 22 interlocked with this, increasing the engine speed, and
The clutch 14 is switched from neutral to forward rotation via the fork 18 that is also linked to this, and the rotational power of the engine is transmitted to the drive wheels 2 through the power transmission path 12 to drive the drive wheels 2 in the normal rotation, thereby causing the trunk 6 to rotate as desired. While spirally rising to the pruning setting height, the chain saw 11
This is also transmitted to the tree, which causes the branch that is on its way to rise to be cut off. When the desired pruning setting height is reached, the mechanical timer 15 is activated and the switching lever 1 is activated.
6 is automatically switched to the R position, the needle 9 is slightly lowered via the cam 22 that is linked to this, the engine speed is reduced by this amount, and the clutch 14 is switched to the reverse side via the fork 18 that is linked to this. As a result, the driving wheels 2 are switched to reverse rotation, and the aircraft body descends together with the action of its own weight.
以上の説明からも明らかなように本考案による
と、切換レバー16とワイヤー26で連結したカ
ム22を介してニードル9の上下位置を決定する
ことから、従来のように、ニードルをワイヤーで
直接引張つていたものに比し、枝打作業時、チエ
ンソー11で切断した枝がワイヤー配線に触れる
等してワイヤー配線が変化しても、カムの上死点
を使うため、これによるニードルの上下変化量は
極めて微少で、エンジン回転速度も切換レバー位
置により設定した速度を確保できる。また、切換
レバーの各F,N,R位置への切換操作に連動し
て回動するカム22の回動角のバラツキに対して
も、ニードルの上下変化量は極めて微少で、常
時、切換レバーの各F,N,R位置に対応するニ
ードルの上下位置へカムを介して設定ができ、各
作業状態に好適なエンジン回転速度を得ることが
できる。 As is clear from the above description, according to the present invention, the vertical position of the needle 9 is determined via the cam 22 connected to the switching lever 16 and the wire 26. During pruning work, even if the wire wiring changes due to a branch cut with the chain saw 11 touching the wire wiring, the top dead center of the cam is used, so the needle changes vertically due to this. The amount is extremely small, and the engine speed can be maintained at the set speed depending on the switching lever position. In addition, even with variations in the rotation angle of the cam 22 that rotates in conjunction with the switching operation of the switching lever to the F, N, and R positions, the amount of vertical change of the needle is extremely small, and the switching lever is always The upper and lower positions of the needle corresponding to the F, N, and R positions can be set via a cam, and an engine rotation speed suitable for each working condition can be obtained.
図面は本考案の実施例を示すもので、第1図は
本考案を実施した枝打機の正面図、第2図は同平
面図、第3図はニードル操作装置の説明図であ
る。
符号、2……駆動車輪、4……遊動車輪、6…
…幹、7……エンジン、9……ニードル、12…
…動力伝達経路、13……正逆転切換機構、15
……機械式タイマー、16……正逆転切換レバ
ー、22……回動カム。
The drawings show an embodiment of the present invention; FIG. 1 is a front view of a pruning machine implementing the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an explanatory diagram of a needle operating device. Code, 2...driving wheel, 4...idling wheel, 6...
...Trunk, 7...Engine, 9...Needle, 12...
...Power transmission path, 13...Forward/reverse switching mechanism, 15
... Mechanical timer, 16... Forward/reverse switching lever, 22... Rotating cam.
Claims (1)
車輪2および遊動車輪4を装備し、所望上昇枝打
高さに応じて任意の高さに設定できる機械式タイ
マー15等により自動的に、かつ、手動的に正転
F位置中立N位置および逆転R位置に切換操作で
きる正逆転切換レバー16の切換操作に連動して
切換可能な正逆転切換機構13を組込んだ動力伝
達経路12を介して、ニードル9の上下移動量に
よりエンジン7回転速度が変化するエンジンの回
転動力を、前記駆動車輪2に伝達し、駆動車輪2
の正逆転駆動により、前記幹6に対して上昇下降
走行する枝打機において、前記ニードル9近傍位
置に回動カム22を設けるとともに、前記カム2
2と前記切換レバー16とを連結し、前記切換レ
バー16の各F,N,R位置への切換操作に連動
して回動する前記カム22により前記F,N,R
位置の夫々に対応する前記ニードル9の上下位置
を決定し得る構成としたことを特徴とする枝打機
におけるエンジンのニードル操作装置。 Equipped with an appropriate number of drive wheels 2 and idle wheels 4 that can touch and hold the circumference of the tree trunk 6, automatic pruning is performed using a mechanical timer 15 etc. that can be set to any height according to the desired height of pruning. A power transmission path incorporating a forward/reverse switching mechanism 13 that can be switched automatically and manually in conjunction with the switching operation of a forward/reverse switching lever 16 that can be switched between a forward F position, a neutral N position, and a reverse R position. 12, the rotational power of the engine whose rotational speed of the engine 7 changes depending on the amount of vertical movement of the needle 9 is transmitted to the driving wheel 2.
In this pruning machine, which moves up and down with respect to the trunk 6 by forward and reverse driving, a rotary cam 22 is provided near the needle 9, and the cam 2
2 and the switching lever 16, and the cam 22 rotates in conjunction with the switching operation of the switching lever 16 to each of the F, N, and R positions.
A needle operation device for an engine in a pruning machine, characterized in that it is configured to be able to determine the upper and lower positions of the needle 9 corresponding to each position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2360684U JPS60136660U (en) | 1984-02-20 | 1984-02-20 | Engine needle operating device for pruning machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2360684U JPS60136660U (en) | 1984-02-20 | 1984-02-20 | Engine needle operating device for pruning machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60136660U JPS60136660U (en) | 1985-09-10 |
JPH036183Y2 true JPH036183Y2 (en) | 1991-02-18 |
Family
ID=30516989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2360684U Granted JPS60136660U (en) | 1984-02-20 | 1984-02-20 | Engine needle operating device for pruning machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60136660U (en) |
-
1984
- 1984-02-20 JP JP2360684U patent/JPS60136660U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60136660U (en) | 1985-09-10 |
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