JPH0515742U - Idler support structure for pruner - Google Patents
Idler support structure for prunerInfo
- Publication number
- JPH0515742U JPH0515742U JP7385191U JP7385191U JPH0515742U JP H0515742 U JPH0515742 U JP H0515742U JP 7385191 U JP7385191 U JP 7385191U JP 7385191 U JP7385191 U JP 7385191U JP H0515742 U JPH0515742 U JP H0515742U
- Authority
- JP
- Japan
- Prior art keywords
- main frame
- frame
- trunk
- movable
- movable sub
- 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.)
- Pending
Links
Abstract
(57)【要約】 （修正有）
［目的］ 主枠と可動副枠とで樹幹を包囲し、巻付バネ
で可動副枠を主枠がわに引き寄せて、主枠がわに設置す
る駆動輪と、可動副枠がわに設置する遊動輪を樹幹の外
周面に弾接させるように構成された枝打ち機において、
樹幹の径の異なりによる巻付バネの伸びの変化量を可及
的に小さくし、大径樹幹への装備を容易にするととも
に、昇降走行時の幹径変化に円滑に追従して常に適正な
弾接力を付与できるようにする。
［構成］ 可動副枠の中間部を、主枠の一端部に枢支軸
でもって回動自在に取り付けた揺動支持腕の先端部に軸
着するとともに、揺動支持腕の中間部に回動自在に枢着
した連結ステ−の他端を、主枠に固設されているガイド
レ−ルに移動可能に係合させ、その移動可能な係合部に
巻付バネの一方のバネ端を掛止した遊動輪支持構造にし
た。
(57) [Summary] (Modified) [Purpose] A drive that encloses the trunk with a main frame and a movable sub-frame, and draws the movable sub-frame to the main frame with a wrapping spring to set it on the main frame. In the pruning machine configured to elastically contact the outer ring surface of the trunk with the ring and the idler wheel that is installed in the movable subframe,
The amount of change in the elongation of the wrapping spring due to the difference in the diameter of the tree trunk is made as small as possible, making it easy to equip large-diameter tree trunks and smoothly following the trunk diameter changes during up-and-down traveling to ensure proper To be able to give elastic contact force. [Structure] The middle part of the movable sub-frame is pivotally attached to one end of the main frame by a tip end of a rocking support arm that is rotatably attached by a pivot shaft, and is rotated around the middle part of the rocking support arm. The other end of the movably pivotally connected connecting station is movably engaged with a guide rail fixed to the main frame, and one movable end of the winding spring is attached to the movable engaging portion. A floating wheel support structure is used.
Description
【０００１】[0001]
本考案は、枝打ち機における遊動輪支持構造に関するものである。 The present invention relates to an idler wheel support structure for a pruner.
【０００２】[0002]
一般的な枝打ち機は、樹幹の外周に接当する駆動輪群と遊動輪群とを備え、そ れらの車輪群の転動によって昇降走行する機体にチエンソ−を立設し、機体の上 昇走行中に、樹幹の周りの枝をチエンソ−で切断するように構成されている。 そして、この種の枝打ち機においては、樹幹の周りを取り囲む機体を、主枠と それに取り付けられる可動副枠とで形成し、主枠に一端部が止着されている巻付 バネでもって可動副枠を主枠がわに弾性的に引き寄せ、その巻付バネの他端を主 枠の他方端部に掛止することによって樹幹を包囲させて、主枠がわに設置する駆 動輪群と、可動副枠がわに設置する遊動輪群とを樹幹の外周面に弾接させるよう に構成されている（例えば、実公平３−３１１６０号公報参照）。 A typical pruning machine is equipped with a group of drive wheels and a group of idler wheels that are in contact with the outer circumference of a tree trunk, and a chain saw is erected on the machine body that moves up and down by rolling of these wheel groups. During climbing, the branches around the tree trunk are cut with a chain saw. In this type of pruning machine, the body surrounding the trunk is formed by a main frame and a movable sub-frame attached to the main frame, and the movable sub-frame is attached by a winding spring whose one end is fixed to the main frame. The main frame is elastically pulled to the wain, and the other end of the wrapping spring is hooked to the other end of the main frame to enclose the tree trunk and set the main frame to the waving drive wheel group. The movable sub-frame is configured to elastically contact the outer peripheral surface of the tree trunk with a group of idler wheels installed on the crocodile (for example, see Japanese Utility Model Publication No. 3-31160).
【０００３】[0003]
可動副枠を巻付バネでもって主枠がわに引き寄せ付勢する機体構造は、機体が 樹木に沿って上昇走行する際に幹径が次第に細くなり、逆に、下降走行の際に幹 径が次第に太くなるように変化することに対応する為のものであるが、従来のも のは、幹径が大きくなると、幹径が小さい場合に比べて巻付バネの引っ張り力が 極端に増大するものであった。 故に、従来のものにおいては、幹径が大きい場合に的確な弾性抱持力を発揮す るように巻付バネのバネ力を設定すれば、幹径が小さい場合の弾性抱持力が不足 することになって機体保持が不確実になり、逆に、幹径が小さい場合に合わせて 巻付バネのバネ力を設定すると、幹径が大きい場合に過剰な引っ張り力が働くこ とになって走行の円滑性が損なわれ、さらに、幹径が大きい樹木にセットすると きには、引っ張り力が極端に増大する巻付バネを人力で引っ張って主枠の係止部 に掛止しなければならないから、大きな力を必要としセット作業に難渋するとい った問題点があった。 本考案は、このような問題点を解消することを目的として実施したもので、幹 径の大なる樹木にも容易にセットすることができ、昇降走行時においては、幹径 の変化に円滑に追従して常に適正な弾性抱持力を発揮するように改良考究した枝 打ち機の遊動輪支持構造を提供するものである。 In the airframe structure in which the movable subframe is urged toward the alligator by the wrapping spring, the trunk diameter gradually becomes smaller when the aircraft travels upward along the trees, and conversely when the aircraft descends. This is to cope with the change in that the diameter gradually becomes thicker, but in the past, when the trunk diameter becomes large, the pulling force of the wrapping spring increases extremely as compared with the case where the trunk diameter is small. It was a thing. Therefore, in the conventional one, if the spring force of the wrapping spring is set so as to exert an appropriate elastic holding force when the stem diameter is large, the elastic holding force when the stem diameter is small is insufficient. As a result, it becomes uncertain to hold the machine, and conversely, if the spring force of the wrapping spring is set according to the case where the stem diameter is small, excessive pulling force will work when the stem diameter is large. When running on a tree with a large trunk diameter, which impairs running smoothness, the wrapping spring, which increases the pulling force extremely, must be manually pulled and hooked on the locking part of the main frame. Therefore, there was a problem that it required a great deal of power and it was difficult to perform the set work. The present invention was carried out for the purpose of solving such a problem, and it can be easily set even on a tree with a large trunk diameter. The idler wheel support structure of the pruning machine has been improved and pursued so as to always exhibit an appropriate elastic holding force.
【０００４】[0004]
上記の目的を達成するため、本考案における枝打ち機の遊動輪支持構造は、樹 幹(Ｔ)の周りの略半部を取り囲む主枠(１)に、主枠(１)とは向きが反対になった 円弧状の可動副枠(２)を枢着し、該可動副枠(２)を前記主枠(１)に一端部が止着 されている巻付バネ(３)で主枠(１)がわに弾性的に引き寄せ、その巻付バネ(３) の他端を主枠(１)の他方端部に掛止することによって樹幹(Ｔ)を包囲させて、主 枠(１)がわに設置される駆動輪(４)群と、可動副枠(２)がわに設けられる遊動輪 (５)群とを樹幹(Ｔ)の外周面に弾接させるようになった枝打ち機において、前記 可動副枠(２)を、その中間部に一端が軸着(６)され且つ他方端部が主枠(１)の一 端部に枢支軸(７)で可回動に取付けられた揺動支持腕(８)によって支持させると ともに、揺動支持腕(８)の中間部に回動自在に枢着(９)した連結ステ−(１０)の 他端を主枠(１)に固設されているガイドレ−ル(１１)に移動可能に係合させ、そ の移動可能な係合部に、前記巻付バネ(３)の一端部を止着して構成したことを特 徴とするものである。 In order to achieve the above object, the idler wheel support structure of the pruning machine according to the present invention has a main frame (1) that surrounds a substantially half part of the trunk (T) and has a direction opposite to that of the main frame (1). The movable sub-frame (2) in the shape of a circular arc is pivotally attached, and the movable sub-frame (2) is attached to the main frame (1) by a winding spring (3) whose one end is fastened to the main frame ( 1) Elastically pulling the crocodile, and enclosing the trunk (T) by hooking the other end of the wrapping spring (3) to the other end of the main frame (1), and the main frame (1) A pruning machine adapted to elastically contact the drive wheel (4) group installed on the gutter and the idle wheel (5) group provided with the movable subframe (2) on the gutter to the outer peripheral surface of the trunk (T). In the above, the movable sub-frame (2) is rotatably attached at one end to the middle part of the movable sub-frame (2) and at the other end to one end of the main frame (1) by a pivot shaft (7). It is supported by the rocking support arm (8), and the middle of the rocking support arm (8) The other end of the connecting steer (10) pivotally attached (9) to the main frame (1) is movably engaged with the other end of the connecting rail (11) so that the guide rail (11) is movable. It is characterized in that one end portion of the wrapping spring (3) is fixed to the engaging portion.
【０００５】[0005]
本考案による遊動輪支持構造を備えた枝打ち機にあっては、巻付バネ(３)の主 枠他端への掛止を解いて、可動副枠(２)に主枠(１)から離間する方向の外力を加 えると、揺動支持腕(８)が枢支軸(７)を支点にして回動するとともに、連結ステ −(１０)の他端がガイドレ−ル(１１)に沿って枢支軸(７)に近づく方に移動して 可動副枠(２)と主枠(１)の端部間に大きな開口部ができる。 In the pruning machine having the idler wheel support structure according to the present invention, the winding spring (3) is unlocked from the other end of the main frame, and the movable sub-frame (2) is separated from the main frame (1). When an external force in the direction of rotation is applied, the swing support arm (8) rotates about the pivot shaft (7) as a fulcrum, and the other end of the connecting station (10) follows the guide rail (11). By moving toward the pivot axis (7), a large opening is formed between the ends of the movable sub-frame (2) and the main frame (1).
【０００６】 そうしておいて、開口部から樹木を内部に受け入れながら主枠(１)と可動副枠 (２)とで樹幹(Ｔ)の周りを取り囲むように装し、巻付バネ(３)を可動副枠(２)の 外側に巻き付けつつ係引し、そのバネ端を主枠(１)の他方端部に掛止すれば、駆 動輪(４)群及び遊動輪(５)群が樹幹(Ｔ)の外周面に弾接されるのであるが、この 場合に、樹幹(Ｔ)が細ければ、遊動輪(５)を備えた可動副枠(２)が巻付バネ(３) の働きで主枠(１)に近づく方向に動かされるに際し、揺動支持腕(８)により押圧 される支持ステ−(１０)の他端部が、ガイドレ−ル(１１)に沿って移動され、こ れと共に巻付バネ(３)の主枠がわにおけるバネ端も移動されて、それらが枢支軸 (７)から離れた位置に保持される。 したがって、幹径が小なる場合には、枢支軸(７)から離れた位置に移動したバ ネ端から延出して可動副枠(２)の外側に巻きかけられ、他方のバネ端が主枠の他 方端部に掛止される巻付バネ(３)のバネ力でもって車輪群が樹幹の外周面に弾接 される。Then, while receiving the tree from the opening, the main frame (1) and the movable sub-frame (2) are attached so as to surround the trunk (T), and the winding spring (3 ) Is wound around the outer side of the movable sub-frame (2), and its spring end is hooked on the other end of the main frame (1), the drive wheel (4) group and the idle wheel (5) group are formed. It is elastically contacted with the outer peripheral surface of the trunk (T). In this case, if the trunk (T) is thin, the movable sub-frame (2) equipped with the idler wheel (5) is wound around the spring (3). The other end of the support stay (10), which is pressed by the swing support arm (8) when it is moved toward the main frame (1) by the action of, moves along the guide rail (11). Along with this, the spring ends of the main frame of the wrapping spring (3) are also moved so that they are held at a position away from the pivot shaft (7). Therefore, when the trunk diameter is small, it extends from the end of the bar moved to a position away from the pivot shaft (7) and is wound around the outside of the movable sub-frame (2), while the other spring end is The wheel group is elastically contacted with the outer peripheral surface of the tree trunk by the spring force of the wrapping spring (3) hooked on the other end of the frame.
【０００７】 また、幹径が太い場合には、その幹径に対応して遊動輪(５)が移動されるに際 して、前述とは逆に、巻付バネ(３)の主枠がわにおけるバネ端が、ガイドレ−ル (１１)に沿って枢支軸(７)に近づく方向に移動される。 故に、幹径が太ければ、上記のようにバネ端が移行することによってバネ圧が 過度にならないように調整される巻付バネ(３)でもって車輪群が樹幹の外周面に 弾接されることとなるのである。When the trunk diameter is large, the main frame of the wrapping spring (3) is reversed when the idler wheel (5) is moved corresponding to the trunk diameter, contrary to the above. The spring end of the arm is moved along the guide rail (11) toward the pivot shaft (7). Therefore, if the trunk diameter is large, the wheel group is elastically contacted with the outer peripheral surface of the tree trunk by the wrapping spring (3) that is adjusted so that the spring pressure does not become excessive due to the transition of the spring end as described above. It will happen.
【０００８】[0008]
次に、本考案の実施例について図面を参照して説明する。 図１は本考案が実施された枝打ち機の斜視全体図、図２は幹径の大きい樹木に 取り付けた状態での本考案構造の説明図、図３は幹径の小さい樹木に取り付けた 状態での本考案構造の説明図、図４は図２におけるＡ−Ａ断面図である。 Next, an embodiment of the present invention will be described with reference to the drawings. 1 is an overall perspective view of a pruning machine in which the present invention is implemented, FIG. 2 is an explanatory view of the structure of the present invention when attached to a tree with a large trunk diameter, and FIG. 3 is a state in which it is attached to a tree with a small trunk diameter. 2 is an explanatory view of the structure of the present invention, and FIG. 4 is a sectional view taken along line AA in FIG.
【０００９】 図１において、(１)は主枠、(１２)は主枠に装備した原動機、(１３)は原動機 に連動する伝動機構を備えたミッションケ−ス、(４)は前記伝動機構の走行伝動 系の出力軸に取付けられた駆動輪群、(１４)は前記伝動機構の作業機伝動系によ って駆動できるように装設されたチエンソ−、(１５)はチエンソ−の先端部に装 備された枝噛み防止用センサ−である。 また、(２)は前記主枠に対向して設けられる可動副枠、(５)は可動副枠に遊転 状態に枢支された遊動輪群である。In FIG. 1, (1) is a main frame, (12) is a prime mover mounted on the main frame, (13) is a transmission case equipped with a transmission mechanism interlocking with the prime mover, and (4) is the transmission mechanism. Drive wheel group attached to the output shaft of the traveling transmission system of (1), (14) is a chain saw installed so that it can be driven by the work machine transmission system of the transmission mechanism, and (15) is the tip of the chain drive. It is a branch bite prevention sensor mounted on the part. Further, (2) is a movable sub-frame provided to face the main frame, and (5) is a group of idle wheels pivotally supported by the movable sub-frame in an idle state.
【００１０】 なお、駆動輪(４)および遊動輪(５)は、定められた上昇リ−ド角をもって設け られ、樹幹(Ｔ)の外周面に接当して転動し得るようになっており、これらのうち の駆動輪(４)群は、前記走行伝動系中の正逆転切換機構が切り換え制御されるこ とによって正転駆動あるいは逆転駆動されるようになっている。The driving wheel (4) and the idler wheel (5) are provided with a predetermined rising lead angle so that they can come into contact with the outer peripheral surface of the tree trunk (T) and roll. The drive wheel group (4) among them is driven to rotate in the forward direction or the reverse direction by the switching control of the forward / reverse rotation switching mechanism in the traveling transmission system.
【００１１】 主枠(１)は、樹幹(Ｔ)の周りのほぼ半部を取り囲む略々半円状の上下２段の横 フレ−ムを縦フレ−ムで連結して構成され、また、主枠(１)に対応する可動副枠 (２)は、主枠(１)とは反対向きに屈曲する円弧状体に形成されている。 そして、主枠(１)の一端部に枢支軸(７)でもって回動自在に取付けた揺動支持 腕(８)の先端部に可動副枠(２)の中間部を軸着(６)すると共に、揺動支持腕(８) の中間部に回動自在に枢着(９)した連結ステ−(１０)の他端を、主枠(１)に固設 されているガイドレ−ル(１１)に移動可能に係合させ、その移動可能な係合部に 巻付バネ(３)のバネ端を掛止している。The main frame (1) is constituted by vertically connecting two upper and lower substantially horizontal semi-circular frames that surround a substantially half portion around the trunk (T), and The movable sub-frame (2) corresponding to the main frame (1) is formed in an arcuate body that is bent in the opposite direction to the main frame (1). Then, the intermediate portion of the movable sub-frame (2) is pivotally attached (6) to the tip of the swing support arm (8) rotatably attached to one end of the main frame (1) by the pivot shaft (7). In addition, the other end of the connecting station (10) pivotally attached (9) to the intermediate portion of the swing support arm (8) is fixed to the main frame (1) at the other end. It is movably engaged with (11), and the spring end of the winding spring (3) is hooked on the movable engaging portion.
【００１２】 連結ステ−(１０)とガイドレ−ル(１１)との係合は、図４のような具体構造で 行われている。つまり、連結ステ−(１０)の先端部に設けた軸(１６)に回動可能 に装したガイドロ−ラ(１７)を、主枠(１)に添設固定されたガイドレ−ル(１１) に転動可能に嵌入させ、前記軸(１６)に巻付バネ(３)のバネ端を掛止するものと なっている。 また、巻付バネ(３)は、軸(１６)に掛止されたバネ端から延出して、可動副枠 (２)の外側に巻きかけられ、反対側のバネ端が、主枠(１)の他方端部に設けられ ている掛止部に係脱可能に掛止されるものとなっている。The engagement between the connecting station (10) and the guide rail (11) is performed by a concrete structure as shown in FIG. That is, the guide roller (17) rotatably mounted on the shaft (16) provided at the tip of the connecting stage (10) is fixedly attached to the main frame (1). The spring end of the wrapping spring (3) is hooked on the shaft (16) so that it can be rolled. The wrapping spring (3) extends from the spring end hooked on the shaft (16) and is wound around the outer side of the movable sub-frame (2), and the opposite spring end of the main spring (1) ), Which is removably engaged with a retaining part provided at the other end.
【００１３】 このように構成される枝打ち機を樹木に装す場合は、可動副枠(２)を外方に開 放回動して生ずる開口部から、主枠(１)と可動副枠(２)とが形成する包囲空間に 樹木を入れる。 そして、巻付バネ(３)を可動副枠(２)の外側に巻き掛けて引っ張って、他方の バネ端を主枠(１)の他方端部に掛止すれば、可動副枠(２)が主枠(１)がわに弾性 的に引き寄せられて、主枠(１)がわに設置されている駆動輪(４)群と、可動副枠 (２)がわに設けられている遊動輪(５)群とが樹幹(Ｔ)の外周面に弾接される。When the pruning machine configured as described above is mounted on a tree, the main frame (1) and the movable sub frame (1) and the movable sub frame ((2)) are opened from the opening formed by pivoting the movable sub frame (2) outward. 2) Put trees in the enclosed space formed by and. Then, the winding spring (3) is wound around the outer side of the movable sub-frame (2) and pulled, and the other spring end is hooked on the other end of the main frame (1). The main frame (1) is elastically attracted to the crocodile, the drive wheel (4) group in which the main frame (1) is installed in the crocodile, and the movable sub-frame (2) provided in the crocodile The ring (5) group is elastically contacted with the outer peripheral surface of the trunk (T).
【００１４】 上記のようにして機体を樹木に装した後、原動機(１２)を始動して、作業機伝 動系によりチエンソ−(１４)を駆動するとともに、正転状態になっている走行伝 動系で駆動輪(４)を稼働させれば、駆動輪(４)群の駆動力により機体が樹幹(Ｔ) の周りを螺旋状に上昇走行し、その上昇走行中に、駆動されつつ樹幹(Ｔ)の周囲 を螺旋状に上昇移行するチエンソ−(１４)が、樹幹(Ｔ)の周りの枝を切断する。After mounting the machine body on the tree as described above, the prime mover (12) is started, and the chain drive (14) is driven by the work machine transmission system, and at the same time, the traveling transmission in the normal rotation state is started. If the drive wheels (4) are operated by the dynamic system, the aircraft will spirally ascend around the trunk (T) due to the driving force of the drive wheels (4) group, and the trunk will be driven while it is being driven upward. Thienso- (14), which moves spirally around (T), cuts the branches around the trunk (T).
【００１５】 機体の上昇が進むつれて、樹木の幹径が次第に細くなるように変化するが、こ の幹径の変化に対しては、可動副枠(２)が巻付バネ(３)の働きで主枠(１)に近づ く方向に動かされることで対応し、駆動輪(４)群と遊動輪(５)群が常に樹幹の外 周面に適正に弾接する状態が保たれるのである（図２および図３参照）。 また、遊動輪(５)群は、揺動支持腕(８)への軸着(６)部を中心にして独立に揺 動する可動副枠(２)に設けられているから、樹幹外周の凹凸部に遭遇することが あっても、それに対して独立懸架状に対応して、機体を安定状態に保持するので ある。As the airframe rises, the trunk diameter of the tree changes so that it gradually narrows. However, with respect to this trunk diameter change, the movable subframe (2) of the winding spring (3) It responds by being moved toward the main frame (1) by working, and the state in which the drive wheels (4) group and idle wheel (5) group are always properly elastically contacting the outer peripheral surface of the tree trunk is maintained. (See FIGS. 2 and 3). Further, since the group of idler wheels (5) is provided on the movable sub-frame (2) which independently swings around the pivotally attached (6) part to the swing support arm (8), it is possible to Even if an irregular surface is encountered, it responds to an independent suspension to maintain the aircraft in a stable state.
【００１６】 しかして、設定された距離を登り終われば、駆動輪(４)に動力伝達する走行伝 動系が逆転状態に切り換えられて、機体が螺旋状に下降走行するのであり、この 際には、上昇走行のときと逆に次第に幹径が太くなるように変化することに対し て、図３の状態から図２の状態に変化して対応するのである。However, when the climbing of the set distance is completed, the traveling transmission system for transmitting the power to the driving wheels (4) is switched to the reverse rotation state, and the aircraft descends spirally. At this time, In contrast to the ascending traveling, the trunk diameter gradually changes to become thicker, which corresponds to the state shown in FIG. 3 changing to the state shown in FIG.
【００１７】[0017]
以上に説明したように、本考案における遊動輪支持構造は、樹幹(Ｔ)の周りの 略半部を取り囲む主枠(１)に、主枠(１)とは向きが反対になった円弧状の可動副 枠(２)を枢着し、この可動副枠(２)を前記主枠(１)に一端部が止着されている巻 付バネ(３)で主枠(１)がわに弾性的に引き寄せ、その巻付バネ(３)の他端を主枠 (１)の他方端部に掛止することによって樹幹(Ｔ)を包囲させて、主枠(１)がわに 設置される駆動輪(４)群と、可動副枠(２)がわに設けられる遊動輪(５)群とを樹 幹(Ｔ)の外周面に弾接させるようになった枝打ち機において、前記可動副枠(２) を、その中間部に一端が軸着(６)され且つ他方端部が主枠(１)の一端部に枢支軸 (７)で可回動に取付けられた揺動支持腕(８)によって支持させると共に、揺動支 持腕(８)の中間部に回動自在に枢着(９)する連結ステ−(１０)の他端を主枠(１) に固設されているガイドレ−ル(１１)に移動可能に係合させ、その移動可能な係 合部に、前記巻付バネ(３)の一端部を止着して構成したから、樹幹(Ｔ)の径の異 なりによる巻付バネ(３)の伸びの変化量が減少されることになって、幹径の大な る樹木にも容易にセットすることができ、昇降走行時においては、幹径の変化に 円滑に追従して常に適正な弾性抱持力を発揮し機体を安定状態に保持できる利点 がある。 As described above, the idler wheel support structure according to the present invention has a main frame (1) that surrounds a substantially half part of the trunk (T) and has an arcuate shape whose direction is opposite to that of the main frame (1). The movable sub-frame (2) is pivotally mounted, and the movable sub-frame (2) is fastened to the main frame (1) by a winding spring (3) whose one end is fastened to the main frame (1). The main frame (1) is installed on the crocodile by elastically pulling it and surrounding the tree trunk (T) by hooking the other end of the wrapping spring (3) to the other end of the main frame (1). In the pruning machine, the drive wheels (4) and the idler wheels (5) provided with the movable sub-frame (2) are elastically contacted to the outer peripheral surface of the trunk (T). Swiveling support of the sub-frame (2), one end of which is pivotally attached (6) to the middle part and the other end of which is rotatably attached to one end of the main frame (1) by a pivot shaft (7). It is supported by the arm (8) and can be pivoted to the middle part of the swing support arm (8). The other end of the connecting station (10) to be worn (9) is movably engaged with a guide rail (11) fixedly mounted on the main frame (1), and the movable engaging portion is provided with Since one end of the wrapping spring (3) is fixed, the amount of change in the elongation of the wrapping spring (3) due to the difference in the diameter of the trunk (T) is reduced. It can be easily set even on large trees, and has the advantage that it can smoothly follow the change in the trunk diameter and always exert an appropriate elastic holding force while keeping the aircraft in a stable state when traveling up and down. is there.
【図１】本考案が実施された枝打ち機の斜視全体図であ
る。FIG. 1 is an overall perspective view of a pruning machine in which the present invention is implemented.
【図２】幹径の大きい樹木に取り付けた状態での本考案
構造の説明図である。FIG. 2 is an explanatory view of the structure of the present invention attached to a tree having a large trunk diameter.
【図３】幹径の小さい樹木に取り付けた状態での本考案
構造の説明図である。FIG. 3 is an explanatory view of the structure of the present invention attached to a tree having a small trunk diameter.
【図４】図２におけるＡ−Ａ断面図である。4 is a sectional view taken along line AA in FIG.
Ｔ 樹幹 １ 主枠 ２ 可動副枠 ３ 巻付バネ ４ 駆動輪 ５ 遊動輪 ６ 軸着 ７ 枢支軸 ８ 揺動支持腕 ９ 枢着 １０ 連結ステ− １１ ガイドレ−ル T Tree 1 Main frame 2 Movable sub frame 3 Winding spring 4 Drive wheel 5 Idler wheel 6 Shaft attachment 7 Pivot support shaft 8 Swing support arm 9 Pivot attachment 10 Connecting rail 11 Guide rail
Claims (1)
(１)に、主枠(１)とは向きが反対になった円弧状の可動
副枠(２)を枢着し、該可動副枠(２)を前記主枠(１)に一
端部が止着されている巻付バネ(３)で主枠(１)がわに弾
性的に引き寄せ、その巻付バネ(３)の他端を主枠(１)の
他方端部に掛止することによって樹幹(Ｔ)を包囲させ
て、主枠(１)がわに設置される駆動輪(４)群と、可動副
枠(２)がわに設けられる遊動輪(５)群とを樹幹(Ｔ)の外
周面に弾接させるようになった枝打ち機において、前記
可動副枠(２)を、その中間部に一端が軸着(６)され且つ
他方端部が主枠(１)の一端部に枢支軸(７)で可回動に取
付けられた揺動支持腕(８)によって支持させると共に、
揺動支持腕(８)の中間部に回動自在に枢着(９)する連結
ステ−(１０)の他端を主枠(１)に固設されているガイド
レ−ル(１１)に移動可能に係合させ、その移動可能な係
合部に、前記巻付バネ(３)の一端部を止着して構成した
ことを特徴とする枝打ち機の遊動輪支持構造。1. A main frame which surrounds a substantially half part around a trunk (T).
An arcuate movable sub-frame (2) whose direction is opposite to that of the main frame (1) is pivotally attached to (1), and one end of the movable sub-frame (2) is attached to the main frame (1). The main frame (1) is elastically drawn to the crocodile by the wrapping spring (3) fixed, and the other end of the wrapping spring (3) is hooked on the other end of the main frame (1). By enclosing the trunk (T) with the main frame (1) on the alligator drive wheel (4) group, and the movable sub-frame (2) provided on the alligator idler wheel (5) group In the pruning machine adapted to elastically contact the outer peripheral surface of (T), one end of the movable sub-frame (2) is axially attached (6) to the middle part of the movable sub-frame (2) and the other end is one end of the main frame (1). Supported by a swinging support arm (8) rotatably attached to the section by a pivot shaft (7),
The other end of the connecting steer (10) pivotably attached (9) to the middle part of the swing support arm (8) is moved to the guide rail (11) fixed to the main frame (1). An idler wheel support structure for a pruning machine, characterized in that one end of the wrapping spring (3) is fixedly attached to the movable engaging portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7385191U JPH0515742U (en) | 1991-08-20 | 1991-08-20 | Idler support structure for pruner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7385191U JPH0515742U (en) | 1991-08-20 | 1991-08-20 | Idler support structure for pruner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0515742U true JPH0515742U (en) | 1993-03-02 |
Family
ID=13530069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7385191U Pending JPH0515742U (en) | 1991-08-20 | 1991-08-20 | Idler support structure for pruner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0515742U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0573862U (en) * | 1992-03-09 | 1993-10-08 | 古河電気工業株式会社 | Flexible flat cable connector |
| JP2007159488A (en) * | 2005-12-14 | 2007-06-28 | Masanori Sugisaka | Apparatus for lifting and lowering columnar material |
-
1991
- 1991-08-20 JP JP7385191U patent/JPH0515742U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0573862U (en) * | 1992-03-09 | 1993-10-08 | 古河電気工業株式会社 | Flexible flat cable connector |
| JP2007159488A (en) * | 2005-12-14 | 2007-06-28 | Masanori Sugisaka | Apparatus for lifting and lowering columnar material |
| JP4496161B2 (en) * | 2005-12-14 | 2010-07-07 | 政典 杉坂 | Elevating device for columnar objects |
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