JP2007006739A - Walking type working machine - Google Patents

Walking type working machine Download PDF

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JP2007006739A
JP2007006739A JP2005189558A JP2005189558A JP2007006739A JP 2007006739 A JP2007006739 A JP 2007006739A JP 2005189558 A JP2005189558 A JP 2005189558A JP 2005189558 A JP2005189558 A JP 2005189558A JP 2007006739 A JP2007006739 A JP 2007006739A
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handle
clutch lever
turning
clutch
gripped
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JP4527014B2 (en
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Ryoichi Tetsuo
良一 鉄尾
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Mitsubishi Agricultural Machinery Co Ltd
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Mitsubishi Agricultural Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the operation abilities of a clutch lever disposed on the handle of a walking type working machine in a usual operation and in a turning operation, and to prevent the deformation of the clutch lever due to the shortage in strength. <P>SOLUTION: This walking type working machine 1 which comprises a working portion 5 disposed in the front portion of the machine frame, the handle 9 having a U-shape on the plan view and extended from the machine frame in the rear upper direction, and a clutch lever 11 having a U-shape on the plan view and disposed on the handle 9 and whose handle 9 is pushed down to raise the working portion 5, when turned, is characterized in that the handle 9 and the clutch lever 11 are disposed close to each other and can together be gripped with hands, and have usual time grip portions 9b, 11b to be gripped in usual time and turning time grip portions 9a, 11b to be gripped, when turned; and the cross-sectional shapes of the usual time grip portion 11b and the turning time grip portion 11a in the clutch lever 11 are flat and circular, respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、機体前部に作業部を備える歩行型作業機に関する。   The present invention relates to a walking-type working machine having a working unit at the front of the machine body.

ロータリなどの作業部を機体前部に備える歩行型作業機が知られている（例えば、特許文献１参照）。この種の歩行型作業機は、機体から後上方に延出するハンドルを備えると共に、ハンドルには、主クラッチを入切操作するためのクラッチレバーが設けられる。ハンドルとクラッチレバーは、通常、クラッチ入り操作時に近接するようになっており、走行時には一緒に握ることができる。特許文献１では、クラッチレバーの断面形状を扁平状とし、ハンドルとクラッチレバーを一緒に握りやすくしている。
特開平１０−２２５２０５号公報 2. Description of the Related Art A walking type work machine having a work part such as a rotary at the front part of the body is known (for example, see Patent Document 1). This type of walking type work machine includes a handle that extends rearward and upward from the machine body, and the handle is provided with a clutch lever for turning on and off the main clutch. The handle and the clutch lever are usually close to each other when the clutch is engaged, and can be held together during traveling. In patent document 1, the cross-sectional shape of a clutch lever is made flat, and it is easy to grip a handle and a clutch lever together.
JP-A-10-225205

ところで、この種の歩行型作業機を旋回させる場合には、ハンドル（及びクラッチレバー）の押し下げ操作によって作業部を上昇させる必要がある。しかしながら、特許文献１に記載されるクラッチレバーのように、断面形状を扁平状にすると、押し下げ操作時に力が入りにくくなったり、強度不足により変形する可能性がある。   By the way, when turning this kind of walking type working machine, it is necessary to raise the working part by pushing down the handle (and the clutch lever). However, if the cross-sectional shape is made flat like the clutch lever described in Patent Document 1, it is difficult for force to be applied during the push-down operation, or there is a possibility of deformation due to insufficient strength.

本発明は、上記の如き実情に鑑みこれらの課題を解決することを目的として創作されたものであって、機体の左右両側方に設けられる車輪と、機体の前部に設けられる作業部と、機体から後上方に延出する平面視凵字状のハンドルと、ハンドルに設けられる平面視凵字状のクラッチレバーとを備え、旋回時には、ハンドルの押し下げ操作によって作業部を上昇させる歩行型作業機において、前記ハンドル及びクラッチレバーは、クラッチ入り操作時に近接して一緒に握ることができるように構成されると共に、通常時に握られる通常時握り部と、旋回時に握られる旋回時握り部とを有し、更に、クラッチレバーにおける通常時握り部の断面形状は扁平状とし、かつ、クラッチレバーにおける旋回時握り部の断面形状は円形状としたことを特徴とする。
このようにすると、クラッチレバーにおいては、通常時に握られる部分の断面形状が扁平状となっているので、ハンドルと一緒に握りやすくなり、また、旋回時に握られる部分の断面形状が円形状となっているので、押し下げ操作時に力が入り易くなるだけでなく、強度不足による変形を防止できる。 The present invention was created for the purpose of solving these problems in view of the above circumstances, wheels provided on the left and right sides of the aircraft, a working unit provided on the front of the aircraft, A walking-type work machine having a handle in the shape of a plane in plan view that extends rearward and upward from the machine body and a clutch lever in the shape of a plane in plan view provided on the handle, and that raises the working unit by a push-down operation of the handle when turning The handle and the clutch lever are configured so that they can be gripped close together when the clutch is engaged, and have a normal grip portion that is gripped in a normal state and a grip portion in a swing portion that is gripped during a turn. In addition, the cross-sectional shape of the grip part during normal operation in the clutch lever is flat, and the cross-sectional shape of the grip part during turning in the clutch lever is circular. To.
In this way, in the clutch lever, the cross-sectional shape of the portion that is normally gripped is flat, so that it is easy to grip with the handle, and the cross-sectional shape of the portion that is gripped when turning is circular. Therefore, not only the force is easily applied during the push-down operation, but also deformation due to insufficient strength can be prevented.

次に、本発明の実施形態について、図面に基づいて説明する。図１において、１は歩行型作業機（歩行型耕耘機）であって、該歩行型作業機１は、機体フレームに兼用される側面視略への字状のミッションケース２を備えている。ミッションケース２の後端部左右両側には、車軸３を介して車輪４が軸支され、また、ミッションケース２の前端部には、左右外側方に延出するロータリ耕耘軸（図示せず）によって、ロータリ耕耘式の作業部５が構成されている。   Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a walking type working machine (walking type tiller), and the walking type working machine 1 includes a mission case 2 that is substantially in a side view and also serves as a body frame. Wheels 4 are pivotally supported on the left and right sides of the rear end portion of the mission case 2 via axles 3, and a rotary tillage shaft (not shown) is extended to the left and right outer sides at the front end portion of the mission case 2. Thus, a rotary tillage working unit 5 is configured.

ミッションケース２の上部には、エンジン６が搭載されている。エンジン６は、テンションクラッチからなるメインクラッチ７を介して、ミッションケース２に動力を入力している。ミッションケース２には、走行動力を変速する走行変速機構と、耕耘動力を変速する耕耘変速機構とを含むトランスミッションが内装されている。これにより、本実施形態のミッションケース２は、エンジン６から車輪４に駆動力を伝動する走行伝動ケースと、エンジン６から作業部５に駆動力を伝動する耕転伝動ケースとに兼用されている。   An engine 6 is mounted on the top of the mission case 2. The engine 6 inputs power to the transmission case 2 via a main clutch 7 that is a tension clutch. The transmission 2 includes a transmission including a traveling transmission mechanism that shifts traveling power and a tillage transmission mechanism that varies tilling power. Thereby, the mission case 2 of the present embodiment is used both as a traveling transmission case that transmits driving force from the engine 6 to the wheels 4 and a tillage transmission case that transmits driving force from the engine 6 to the working unit 5. .

ミッションケース２の後部には、斜め上方に向かって突出する左右一対のハンドルブラケット８がボルト固定されている。図２に示すように、両ハンドルブラケット８の後端部同士は、後方持ち手に兼用されるパイプ８ａを介して一体的に連結されている。パイプ８ａの左右両端部には、平面視凵字状に形成されるハンドル９の基端部がノブ付きボルト１０を介して取り付けられている。ノブ付きボルト１０を締めると、ハンドル９がパイプ８ａに対して固定される一方、ノブ付きボルト１０を緩めると、ノブ付きボルト１０を回動支点とするハンドル９の前後回動が許容され、ハンドル９の折畳みが可能になる。   A pair of left and right handle brackets 8 projecting obliquely upward are bolted to the rear part of the mission case 2. As shown in FIG. 2, the rear end portions of the handle brackets 8 are integrally connected via a pipe 8a that is also used as a rear handle. A base end portion of a handle 9 formed in a square shape in plan view is attached to both left and right end portions of the pipe 8a via bolts 10 with knobs. When the knob-equipped bolt 10 is tightened, the handle 9 is fixed to the pipe 8a. On the other hand, when the knob-equipped bolt 10 is loosened, the handle 9 is allowed to rotate back and forth with the knob-equipped bolt 10 as a rotation fulcrum. 9 folds are possible.

ハンドル９には、メインクラッチ７の入り切りを操作するクラッチレバー１１が設けられており、このクラッチレバー１１の回動操作によって、車輪４及び作業部５の駆動を入り切りすることが可能になる。具体的に説明すると、クラッチレバー１１は、平面視凵字状に形成されており、その両端部が回動支軸１２を介してハンドル９に支持されている。また、クラッチレバー１１の一端部には、アーム１３が一体的に設けられている。このアーム１３は、ワイヤ１４を介してメインクラッチ７に連結されており、クラッチレバー１１の操作に応じたワイヤ１４の押し引きにより、メインクラッチ７を入り切り動作させる。   The handle 9 is provided with a clutch lever 11 for operating the main clutch 7 to be turned on and off. By rotating the clutch lever 11, the driving of the wheels 4 and the working unit 5 can be turned on and off. More specifically, the clutch lever 11 is formed in a square shape in a plan view, and both ends thereof are supported by the handle 9 via the rotation support shaft 12. An arm 13 is integrally provided at one end of the clutch lever 11. The arm 13 is connected to the main clutch 7 via a wire 14, and the main clutch 7 is turned on and off by pushing and pulling the wire 14 according to the operation of the clutch lever 11.

図３は、クラッチ切り時におけるクラッチレバー１１のポジションを示し、図４は、クラッチ入り時におけるクラッチレバー１１のポジションを示している。これらの図に示すように、ハンドル９とクラッチレバー１１は、クラッチ入り操作時に近接するようになっており、メインクラッチ７を入りとした走行時においては、一緒に握ることができる。また、歩行型作業機１を旋回させる場合においても、ハンドル９とクラッチレバー１１は一緒に握られているが、フロント作業方式の本機では、作業部５を上昇させるために、ハンドル９及びクラッチレバー１１を押し下げ操作することが求められる。   FIG. 3 shows the position of the clutch lever 11 when the clutch is disengaged, and FIG. 4 shows the position of the clutch lever 11 when the clutch is engaged. As shown in these drawings, the handle 9 and the clutch lever 11 are close to each other when the clutch is engaged, and can be held together when traveling with the main clutch 7 engaged. Further, when the walking type work machine 1 is turned, the handle 9 and the clutch lever 11 are held together. However, in the front work type machine, the handle 9 and the clutch It is required to push down the lever 11.

本実施形態では、この押し下げ操作を容易にするために、ハンドル９及びクラッチレバー１１の左右中央部に旋回時握り部９ａ、１１ａを形成している。旋回時握り部９ａ、１１ａは、その左右両側に形成される通常時握り部９ｂ、１１ｂよりも高い位置に形成されており、旋回時におけるハンドル９及びクラッチレバー１１の押し下げ操作を容易にする。尚、本実施形態のハンドル９では、別体形成された旋回時握り部９ａを一体的に溶着しているが、ハンドル９の曲げ加工により、旋回時握り部９ａを一体形成してもよい。また、本実施形態のクラッチレバー１１では、旋回時握り部１１ａを曲げ加工により一体形成しているが、別体形成された旋回時握り部１１ａを一体的に溶着するようにしてもよい。   In the present embodiment, in order to facilitate the push-down operation, the turning grips 9 a and 11 a are formed at the left and right central portions of the handle 9 and the clutch lever 11. The turning grips 9a and 11a are formed at positions higher than the normal grips 9b and 11b formed on the left and right sides of the turning handle 9a and 11a, and facilitate the push-down operation of the handle 9 and the clutch lever 11 during turning. In the handle 9 of the present embodiment, the turning grip 9a formed separately is integrally welded. However, the turning grip 9a may be integrally formed by bending the handle 9. In the clutch lever 11 of this embodiment, the turning grip portion 11a is integrally formed by bending, but the turning grip portion 11a formed separately may be integrally welded.

従来のクラッチレバー１１としては、パイプ材を曲げ加工して形成され、その断面形状が略全域で円形状のものと、パイプ材を曲げ加工した後、全体を潰し加工し、その断面形状が略全域で扁平状のものとがある。本発明のクラッチレバー１１は、通常時及び旋回時において良好な操作性を発揮すると共に、旋回時の押し下げ操作で変形しない強度を確保するために、断面形状が円形状の部分と、扁平状の部分とを有する。具体的には、クラッチレバー１１における通常時握り部１１ｂの断面形状は扁平状とし、クラッチレバー１１における旋回時握り部１１ａの断面形状は円形状としている。このようにすると、クラッチレバー１１においては、通常時に握られる部分の断面形状が扁平状となっているので、ハンドル９と一緒に握りやすくなり、また、旋回時に握られる部分の断面形状が円形状となっているので、押し下げ操作時に力が入り易くなると共に、強度不足による変形を防止できる。特に、本実施形態のハンドル９及びクラッチレバー１１は、クラッチ入操作時に旋回時握り部９ａ、１１ａ同士が前後に並ぶので、両者の断面形状を円形にすると、押し下げ操作時に力が入り易くなる。   The conventional clutch lever 11 is formed by bending a pipe material, and the cross-sectional shape thereof is a circular shape in almost the entire region, and after bending the pipe material, the whole is crushed and the cross-sectional shape is substantially the same. Some are flat. The clutch lever 11 of the present invention exhibits good operability during normal times and during turning, and in order to ensure strength that does not deform due to a pressing operation during turning, a section having a circular shape and a flat shape. And having a part. Specifically, the cross-sectional shape of the normal grip part 11b in the clutch lever 11 is flat, and the cross-sectional shape of the turning grip part 11a in the clutch lever 11 is circular. In this way, in the clutch lever 11, the cross-sectional shape of the portion that is normally gripped is flat, so that it is easy to grip with the handle 9, and the cross-sectional shape of the portion that is gripped when turning is circular. Therefore, it is easy to apply force during the push-down operation, and deformation due to insufficient strength can be prevented. In particular, the handle 9 and the clutch lever 11 of the present embodiment have the turning grips 9a and 11a lined up forward and backward when the clutch is engaged, so that if the cross-sectional shapes of both are circular, a force is easily applied during the push-down operation.

叙述の如く構成された本実施形態の歩行型作業機１は、機体の左右両側方に設けられる車輪４と、機体の前部に設けられる作業部５と、機体から後上方に延出する平面視凵字状のハンドル９と、ハンドル９に設けられる平面視凵字状のクラッチレバー１１とを備え、旋回時には、ハンドル９の押し下げ操作によって作業部５を上昇させる歩行型作業機１であり、ハンドル９及びクラッチレバー１１は、クラッチ入り操作時に近接して一緒に握ることができるように構成されると共に、通常時に握られる通常時握り部９ｂ、１１ｂと、旋回時に握られる旋回時握り部９ａ、１１ａとを有し、更に、クラッチレバー１１における通常時握り部１１ｂの断面形状は扁平状とし、かつ、クラッチレバー１１における旋回時握り部１１ａの断面形状は円形状としたので、通常時及び旋回時において良好な操作性を発揮すると共に、旋回時の押し下げ操作で変形しない強度を確保できる。つまり、クラッチレバー１１においては、通常時に握られる部分の断面形状が扁平状となっているので、ハンドル９と一緒に握りやすくなり、また、旋回時に握られる部分の断面形状が円形状となっているので、押し下げ操作時に力が入り易くなるだけでなく、強度不足による変形を防止できる。   The walking type work machine 1 according to the present embodiment configured as described above includes a wheel 4 provided on both left and right sides of the machine body, a work part 5 provided on the front part of the machine body, and a plane extending rearward and upward from the machine body. A walking-type work machine 1 that includes a handle 9 having a cross-sectional shape and a clutch lever 11 having a cross-sectional shape provided on the handle 9, and lifts the working unit 5 by a push-down operation of the handle 9 when turning. The handle 9 and the clutch lever 11 are configured so as to be able to be grasped together in close proximity during clutch engagement operation, and the normal grip portions 9b and 11b that are gripped at the normal time, and the swing grip portion 9a that is gripped during the swing. 11a, and the cross-sectional shape of the normal grip portion 11b of the clutch lever 11 is flat, and the cross-sectional shape of the swivel grip portion 11a of the clutch lever 11 is circular. Since the Jo, exhibit normal and good operability at the time of turning, it can ensure the strength is not deformed by the depressing operation during turning. That is, in the clutch lever 11, since the cross-sectional shape of the portion gripped at the normal time is flat, it is easy to grip with the handle 9, and the cross-sectional shape of the portion gripped at the time of turning is circular. Therefore, not only can the force be easily applied during the push-down operation, but also deformation due to insufficient strength can be prevented.

歩行型耕耘機の側面図である。It is a side view of a walking type tiller. ハンドル部分の平面図である。It is a top view of a handle part. クラッチ切り状態を示すハンドル部分の側面図である。It is a side view of the handle | steering-wheel part which shows a clutch cut state. クラッチ入り状態を示すハンドル部分の側面図である。It is a side view of the handle | steering-wheel part which shows a clutch engagement state.

符号の説明Explanation of symbols

１ 歩行型作業機
２ ミッションケース
４ 車輪
５ 作業部
６ エンジン
７ メインクラッチ
９ ハンドル
９ａ 旋回時握り部
９ｂ 通常時握り部
１１ クラッチレバー
１１ａ 旋回時握り部
１１ｂ 通常時握り部 DESCRIPTION OF SYMBOLS 1 Walking type work machine 2 Mission case 4 Wheel 5 Working part 6 Engine 7 Main clutch 9 Handle 9a Gripping part 9b at the time of normal grip 11 Clutch lever 11a Gripping part at the time of turning 11b Gripping part at normal time

Claims (1)

機体の左右両側方に設けられる車輪と、機体の前部に設けられる作業部と、機体から後上方に延出する平面視凵字状のハンドルと、ハンドルに設けられる平面視凵字状のクラッチレバーとを備え、旋回時には、ハンドルの押し下げ操作によって作業部を上昇させる歩行型作業機において、
前記ハンドル及びクラッチレバーは、クラッチ入り操作時に近接して一緒に握ることができるように構成されると共に、通常時に握られる通常時握り部と、旋回時に握られる旋回時握り部とを有し、更に、クラッチレバーにおける通常時握り部の断面形状は扁平状とし、かつ、クラッチレバーにおける旋回時握り部の断面形状は円形状としたことを特徴とする歩行型作業機。 Wheels provided on the left and right sides of the airframe, a working part provided at the front of the airframe, a handle in a letter-like shape in plan view extending rearward and upward from the fuselage, and a clutch in a letter-like shape in plan view provided on the handle In the walking type work machine that has a lever and raises the working part by pushing down the handle when turning,
The handle and the clutch lever are configured so as to be able to be grasped together in close proximity when the clutch is engaged, and have a normal grip portion gripped at a normal time and a grip grip portion at a swing gripped at the time of turning, Furthermore, the cross-sectional shape of the grip part during normal operation in the clutch lever is flat, and the cross-sectional shape of the grip part during turning in the clutch lever is circular.
JP2005189558A 2005-06-29 2005-06-29 Walking type work machine Expired - Fee Related JP4527014B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008193970A (en) * 2007-02-14 2008-08-28 Kubota Corp Walking-type working machine
WO2010070722A1 (en) * 2008-12-15 2010-06-24 ヤマハモーターパワープロダクツ株式会社 Handle apparatus for operation machine and operation machine equipped with the same

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