JPS6325979Y2 - - Google Patents

Description

【考案の詳細な説明】 この考案は、自重で螺旋状に回転しながら下降
する自昇型の枝打機の下降時に、効果的に補助駆
動力を車輪に付与する枝打機の下降補助駆動装置
に関するものである。[Detailed description of the invention] This invention is a descending auxiliary drive for a pruning machine that effectively applies auxiliary driving force to the wheels when the self-elevating type pruning machine descends while rotating in a spiral shape under its own weight. It is related to the device.

従来から、第１図、第２図で示される自昇型の
枝打機は知られている。 BACKGROUND ART A self-elevating pruning machine shown in FIGS. 1 and 2 has been known.

すなわち、木の幹１の外周に接当する駆動輪２
…を装着した弓状の主フレーム３と、同じく遊動
輪４…を装着した副フレーム５を連結支点６枢着
するとともに、連結支点６と反対側において、ス
プリング７等で両フレーム３，５を引張り合うよ
う構成したものである。なお枝打機にはエンジン
８が自装され、この動力はミツシヨン９等で適宜
変速され、主フレーム３側に固設された駆動輪２
…と遊動輪４間に上向して装備されたチエンソー
１０に伝達される他、前記の駆動輪２…にも伝達
され、幹１に対して螺旋状に登るとともに、チエ
ンソー１０で途中の枝１１を切断するものであ
る。またこの枝打機は一定距離登ると、上下行切
換機構１２が働き上下行切換レバー１３を自動的
に切換え、今度は駆動輪２…を逆転させ、同じく
旋状に舞い降りるのである。さらにチエンソー
１０を含むミツシヨン９は揺動支点０を中心に揺
動自在に構成され、かつこの揺動支点０はミツシ
ヨン９等の重心より進行方向前側に設定してある
ので、上行の際、チエンソー１０はその慣性力に
よつて幹１側に吸い寄せられ、チエンソー１０に
装設されたストツパー１４によつて幹１との間の
間隔が決められ、切断すべき枝１１の突出量を一
定に保つのであり、下行の際は同じく慣性力によ
つてチエンソー１０は幹１から離反するのであ
る。 In other words, the drive wheel 2 that comes into contact with the outer periphery of the tree trunk 1
The bow-shaped main frame 3 equipped with ... and the sub-frame 5 equipped with idler wheels 4 are pivoted at a connecting fulcrum 6, and on the opposite side of the connecting fulcrum 6, both frames 3 and 5 are held together by a spring 7 or the like. They are constructed so that they can be pulled together. The pruning machine is equipped with an engine 8, and this power is suitably changed in speed by a transmission 9, etc., and the driving wheel 2 fixedly installed on the main frame 3 side.
In addition to being transmitted to the chain saw 10 installed upward between the idle wheels 4, the transmission is also transmitted to the driving wheels 2, which climbs up the trunk 1 in a spiral manner, and the chain saw 10 moves the branches along the way. 11. Moreover, when this pruning machine climbs a certain distance, the vertical switching mechanism 12 operates and automatically switches the vertical switching lever 13, which in turn reverses the drive wheels 2 and descends in the same spiral shape. Furthermore, the transmission 9 including the chain saw 10 is configured to be able to swing freely around a swing fulcrum 0, and this swing fulcrum 0 is set forward in the direction of travel from the center of gravity of the transmission 9, etc. 10 is attracted to the trunk 1 side by its inertial force, and the distance between it and the trunk 1 is determined by a stopper 14 installed on the chain saw 10, and the amount of protrusion of the branch 11 to be cut is kept constant. When descending, the chain saw 10 separates from the trunk 1 due to the same inertial force.

ところで、このように自昇型の枝打機を自動的
に上昇下降させる上下行切換機構口を装備させる
と構成が複雑になる上高価になることから、下降
時には所定設定距離登るとクラツチ（図示省略）
を自動的に切りエンジン８からの駆動輪２…への
動力伝達を完全に断ち、自重でのみ螺旋状に舞い
降ろす簡単な構成としたものがある。 By the way, equipping a self-elevating type pruning machine with a vertical switching mechanism for automatically raising and lowering it would complicate the configuration and increase the cost. omission)
There is a simple structure that automatically turns off the power transmission from the engine 8 to the drive wheels 2, completely cutting off the transmission of power from the engine 8 to the drive wheels 2, and spirals down only by its own weight.

しかしながら、このような構成にすると下降初
期には大きな駆動力が必要であるので、単に自重
だけでは作動して下降しない不具合があつた。 However, with such a configuration, a large driving force is required at the initial stage of descent, so there was a problem that the robot would not operate and descend simply by its own weight.

そこで、この考案は、駆動輪および遊動輪の少
なくとも一車輪以上に下降補助駆動装置を装着
し、上昇時にこの装置に蓄積したエネルギーによ
つて下降時に当該車輪に補助駆動力を付与し自重
と相俟つて確実に下降でき得る枝打機の下降補助
駆動装置を提供し、前記欠点に対処したものであ
る。 Therefore, this idea is to install a descending auxiliary drive device on at least one of the driving wheels and idler wheels, and use the energy accumulated in this device when ascending to apply an auxiliary driving force to the wheel when descending, thereby compensating with its own weight. The present invention addresses the above-mentioned drawbacks by providing a lowering auxiliary drive device for a pruning machine that can lower the pruning machine reliably.

以下この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 this invention will be described with reference to the drawings.

第３図はこの考案に係る枝打機の下降補助駆動
装置を装着した駆動輪を示す一部破断要部拡大
図、第４図は第３図のＢ−Ｂ線における断面図で
あるが、この下降補助駆動装置Ａとしては、例え
ば、渦巻状ゼンマイ１５を、駆動輪２の車軸２ａ
の外周壁に形成したラチエツト２ｃと、車軸ケー
ス２ｂ内周壁に形成した山形波状制動歯２ｄ間に
装着したものが考えられる。 FIG. 3 is a partially cutaway enlarged view of the main part showing a drive wheel equipped with a lowering auxiliary drive device for a pruning machine according to this invention, and FIG. 4 is a sectional view taken along line B-B in FIG. 3. As this lowering auxiliary drive device A, for example, the spiral spring 15 is connected to the axle 2a of the drive wheel 2.
One conceivable example is a ratchet 2c formed on the outer circumferential wall of the axle case 2b, and a chevron-shaped wave-shaped brake tooth 2d formed on the inner circumferential wall of the axle case 2b.

すなわち、このゼンマイ１５の内側一端には係
止部１５ａを、また、外側他端にはＶ字屈曲部１
５ｂを形形成する。 That is, the mainspring 15 has a locking part 15a at one end on the inside, and a V-shaped bent part 1 at the other end on the outside.
5b.

そして、この係止部１５ａを、駆動輪２の車軸
２ａに形成したラチエツト２ｃによつて、車軸が
正転方向（矢示イ方向）に回転するときは、これ
が係止され、また、車軸２ａが逆転方向（矢示ロ
方向）に回転するときは、これが係止しないよう
に構成し、屈曲部１５ｂがバネ力により押し付け
噛合され、ある程度までブレーキとして作用する
よう前記制動歯２ｄを山形波状に形成したもので
ある。 This locking portion 15a is locked by a ratchet 2c formed on the axle 2a of the drive wheel 2 when the axle rotates in the normal rotation direction (direction of arrow A). When rotating in the reverse direction (arrow B direction), the brake teeth 2d are arranged in a chevron-shaped wave shape so that the bent portions 15b are pressed against each other by the spring force and are engaged with each other to act as a brake to some extent. It was formed.

したがつて、エンジン８からの動力伝達により
駆動輪２が正転駆動する上昇時には、まず屈曲部
１５ｂは前記制動歯２ｄと固定状態となるようバ
ネ力により押し付られ噛合し、ブレーキとなる一
方、係止部１５ａはラチエツト２ｃに係止してい
るので、駆動輪２の駆動力によつてゼンマイ１５
は順次巻かれていきエネルギーは蓄積されてい
く。そして、所定巻数まで巻かれゼンンマイ１５
に所定エネルギーが蓄積されると、屈曲部１５ｂ
は、もはやその固定状態を維持することができな
くなり、上記蓄積されたエネルギーを減少させる
ことなく、制動歯２ｄ上を滑動することとなり、
一方、機体は、この状態で所定設定高さまで進行
することとなる。 Therefore, when the drive wheels 2 are raised to rotate in the normal direction by power transmission from the engine 8, the bent portions 15b are first pressed by the spring force and engaged with the brake teeth 2d so as to be in a fixed state, and act as a brake. Since the locking portion 15a is locked to the ratchet 2c, the mainspring 15 is moved by the driving force of the drive wheel 2.
is wound one after another, and energy is accumulated. Then, the mainspring 15 is wound to a predetermined number of turns.
When a predetermined energy is accumulated in the bent portion 15b
is no longer able to maintain its fixed state and slides on the brake tooth 2d without reducing the stored energy,
On the other hand, the aircraft will advance to a predetermined set height in this state.

次に、機が所定設定高さ登り、適宜クラツチ
（図示省略）が自動的に切られ、これによつてエ
ンジン８からの駆動輪２への動力伝達が完全に断
たれ、駆動輪２が逆転する下降時には、当初、こ
のゼンマイ１５の係止部１５ａとラチエツト２ｃ
との係止状態はゼンマイ１５が巻かれていること
から維持され、上昇時に蓄積されたエネルギーに
よつて補助駆動力が駆動軸２に付与され、自重と
相俟つて下降し、蓄積エネルギーがなくなると、
この係止部１５ａはラチエツト２ｃに対し滑動す
るようになり、したがつて車軸２ａは空転し機は
自重で舞い降りることになる。この下降時にはゼ
ンマイ１５の屈曲部１５ｂは前記制動歯２ｄへ噛
合固定され、ブレーキとして作用することにな
る。 Next, the aircraft climbs to a predetermined height, and the clutch (not shown) is automatically disengaged as appropriate, thereby completely cutting off the power transmission from the engine 8 to the drive wheels 2, and the drive wheels 2 are rotated in reverse. When descending, the locking portion 15a of the mainspring 15 and the ratchet 2c initially
The locked state with the mainspring 15 is maintained because the mainspring 15 is wound, and the energy accumulated during the rise applies auxiliary driving force to the drive shaft 2, which together with its own weight descends, and the accumulated energy disappears. and,
This locking portion 15a comes to slide with respect to the ratchet 2c, so that the axle 2a will idle and the machine will descend under its own weight. During this downward movement, the bent portion 15b of the mainspring 15 is engaged and fixed to the brake tooth 2d, and acts as a brake.

なお、実施例においては下降補助駆動装置Ａを
駆動輪２に装着したものを示したが、遊動輪４に
装着する場合も同様であり、またこの装置Ａを駆
動輪２…および遊動輪４…の適当数の車輪に装着
しても良いものである。 In the embodiment, the lowering auxiliary drive device A is shown attached to the drive wheels 2, but the same applies when attached to the idler wheels 4, and this device A is attached to the drive wheels 2... and the idler wheels 4... It may be attached to an appropriate number of wheels.

この考案は以上の構成からなるので、所定設定
高さまでの上昇時から下降に移行する下降初期に
は下降補助駆動装置Ａにエネルギーが順次蓄積さ
れ最大となつているので、これによつて大きな駆
動力を必要とする下降初期の下降を十分補助でき
る補助駆動力が付与でき、自重と相まつて、従来
のように自重だけによつて下降を開始する場合に
比較し確実に下降が開始できる。 Since this device has the above-mentioned configuration, energy is sequentially accumulated in the descending auxiliary drive device A and reaches its maximum level at the beginning of the descent when moving from the ascent to a predetermined height to the descent. It is possible to provide an auxiliary driving force that can sufficiently assist the initial descent which requires force, and in combination with the vehicle's own weight, the descent can be started more reliably than in the conventional case where the descent is started only by the vehicle's own weight.

また、下降途中においても、下降補助駆動装置
Ａに蓄積されているエネルギーを順次使用し、補
助駆動力が付与できるので途中で止まることもな
く迅速かつ確実に下降ができる。 Furthermore, even during the descent, the energy stored in the descent auxiliary drive device A can be sequentially used to provide auxiliary driving force, so that the descent can be done quickly and reliably without stopping midway.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は枝打機の正面図、第２図は同平面図、
第３図はこの考案に係る枝打機の下降補助装置を
装着した駆動輪を示す一部破断要部拡大図、第４
図は第３図のＢ−Ｂ線における断面図である。 符号、１……幹、２……駆動輪、４……遊動
輪、１５……渦巻状ゼンマイ、Ａ……下降補助駆
動装置。 Figure 1 is a front view of the pruning machine, Figure 2 is a plan view of the same,
Figure 3 is a partially cutaway enlarged view of the main part showing the drive wheel equipped with the lowering assist device of the pruning machine according to this invention;
The figure is a sectional view taken along the line BB in FIG. 3. Code: 1... Stem, 2... Driving wheel, 4... Idle wheel, 15... Spiral mainspring, A... Lowering auxiliary drive device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 駆動輪２…および遊動輪４…によつて木の幹１
を周囲から抱持し、上昇時には前記駆動輪２…を
駆動して螺旋状に登り、下降時には自重で螺旋状
に回転しながら下降する自昇型の枝打機の、前記
駆動輪２…および遊動輪に対し、これらの少なく
とも一車輪以上に、上昇時にエネルギーを蓄積
し、下降時にこのエネルギーによつて当該車輪を
逆転方向に補助駆動して下降を補助する渦巻状ゼ
ンマイ１５を、当該車輪の車軸２ａの外周壁に形
成したラチエツト２ｃと、車軸ケース２ｂの内周
壁に形成した制動歯２ｄ間に装着したことを特徴
とする枝打機の下降補助駆動装置。 The trunk 1 of the tree is driven by the driving wheel 2... and the idler wheel 4...
The drive wheels 2... of a self-lifting pruning machine that holds the pruning machine from its surroundings, drives the drive wheels 2... to climb spirally when ascending, and descends while rotating spirally due to its own weight when descending. A spiral mainspring 15 is installed in at least one of the idle wheels, which accumulates energy when ascending, and uses this energy to assist the wheel in the reverse direction when descending to assist in its descent. A lowering auxiliary drive device for a pruning machine, characterized in that it is installed between a ratchet 2c formed on the outer peripheral wall of an axle 2a and a brake tooth 2d formed on the inner peripheral wall of an axle case 2b.