車輪の回転外周部にラグ付きのタイヤ（チューブ付き、又はチューブなしのゴム製ムク形態のタイヤ）を形成する場合は、タイヤ幅の中央部回転方向に沿ってセンタリング部を形成して、常時接地回転して走行方向性を安定させる形態としているが、このセンタリング部の左右両側部にはタイヤ外周部のラグ部を張出形成するため、このような形態のタイヤを形成した車輪を、単軸車軸上に左右一対相接近させて狭幅間隔部に配置軸装して、作業走行する場合は、各車輪の左右タイヤ間隔部に土壌や、石礫、草わら類が咬込まれて、圧縮堆積され易くなり、この土詰りによって、車輪は重くなり、回転駆動抵抗を増し、車輪回転に上下振動を発生したり、曲進し易くなる等、走行性が低下される。又、車輪間隔部、及び左右のタイヤ、ラグ間隔部等に詰った土壌や、わら屑などの付着運搬が行われ易く、走行路面を汚し易くなる。
When forming tires with lugs on the rotating outer periphery of the wheel (tires with or without rubber tube), a centering part is formed along the rotation direction of the center of the tire width, and is always grounded. It is configured to rotate and stabilize the traveling directionality, but since the lug portion of the tire outer peripheral portion is formed overhanging on both the left and right sides of this centering portion, When working on a wheelchair with a pair of left and right phases close to each other on the axle and working in a narrow space, soil, stones and grass straw are bitten and compressed in the left and right tire space of each wheel. The wheel becomes heavier due to this clogging, and the wheel becomes heavier, the rotational driving resistance is increased, the vertical rotation is generated in the wheel rotation, and the vehicle is liable to bend. In addition, it is easy to adhere and convey soil clogged with the wheel spacing part, the left and right tires, the lug spacing part, and the like, and straw scraps, so that the traveling road surface is easily soiled.
請求項１に記載の発明は、車体１の車軸２に対して、外周部にタイヤ３を形成した左右一対の車輪４を軸方向に接近させて、タイヤ幅を狭幅の間隔部Ａにして軸装すると共に、前記間隔部Ａには、この間隔部Ａに巻込まれる土壌を回転外周部へ掻き出すスクレパー５を介装したことを特徴とする管理作業機の走行車輪の構成とする。
In the first aspect of the present invention, a pair of left and right wheels 4 having tires 3 formed on the outer peripheral portion thereof are approached in the axial direction with respect to the axle 2 of the vehicle body 1 so that the tire width is a narrow interval portion A. In addition to the shaft mounting, the spacing portion A has a configuration of a traveling wheel of a management work machine characterized by interposing a scraper 5 that scrapes the soil caught in the spacing portion A to the rotating outer peripheral portion.
車体１は、車軸２の上側部にエンジンベース等を設け、この後方に作業ハンドル６を突出させて、この作業ハンドル６を歩行操作しながら、前記車体１の後部、又は前部に装着する作業部を駆動して、耕耘や、中耕、除草、薬剤防除等の各種対地作業、管理作業を行うものである。車輪４は、周面にゴム製のタイヤ３を一体的に成形したもので、車輪４のチューブリム１５の外周部に、ゴム製タイヤ３を適宜層厚さに形成している。このタイヤ３は、チューブリム１５の外周面に着脱可能に構成することも可能である。前記タイヤ３の回転外周部には、タイヤ３幅の中央部に沿って常時接地した状態で回転するセンタリング部１６を側面視で略円形状の形態に形成し、このセンタリング部１６の左右両側部には、ラグ部１７，１８一定間隔に配置形成して側方へ突出させている。前記センタリング部１６には、各ラグ部１７，１８との交差連結部において、凹む凹部１９を形成して、車輪４走行時の駆動を円滑に行わせる形態としている。又、前記ラグ１７は横側へ長く、広く突出する形態とし、このラグ部１７と一つ置きに形成のラグ部１８は、前記ラグ１７よりも短かく、狭く突出される。これら各ラグ部１７，１８の回転外周端縁は、前記センタリング部１６の外周端縁部と略同回転径に設定して、接地回転幅、駆動幅を広くするように形成している。
The vehicle body 1 is provided with an engine base or the like on the upper side of the axle 2, a work handle 6 is protruded behind this, and the work handle 6 is walked and attached to the rear or front of the vehicle body 1. The unit is driven to perform various ground work and management work such as tillage, middle tillage, weeding, and chemical control. The wheel 4 is formed by integrally molding a rubber tire 3 on the peripheral surface, and the rubber tire 3 is appropriately formed in a layer thickness on the outer peripheral portion of the tube rim 15 of the wheel 4. The tire 3 can also be configured to be detachable from the outer peripheral surface of the tube rim 15. Centering portions 16 that rotate in a state where they are always grounded along the central portion of the width of the tire 3 are formed in a substantially circular shape in a side view on the outer periphery of the tire 3. The lug portions 17 and 18 are arranged and formed at regular intervals so as to protrude sideways. The centering portion 16 is formed with a recessed portion 19 that is recessed at the cross connection portion with each lug portion 17, 18, so that the driving during the traveling of the wheel 4 is performed smoothly. Further, the lug 17 is long and protrudes to the side, and the lugs 18 formed alternately with the lugs 17 are shorter and narrower than the lugs 17. The rotation outer peripheral edges of the lugs 17 and 18 are set to have substantially the same rotation diameter as the outer peripheral edge of the centering part 16 so as to widen the ground rotation width and the driving width.
前記車体１の作業走行時に、車軸２の駆動回転によって接地回転される車輪４は、走行土壌面に対する踏圧によって、土壌や、泥土、石礫、わら屑等を車輪間隔部Ａに咬込ませて、この車輪４の回転方向へ巻き上げ、乃至掻き上げるようになる。この間隔部Ａに咬込保持されて掻き上げられる土壌等は、車輪４の上昇回転行程途中において、この間隔部Ａに介入しているスクレパー５によって、この回転外周部側へ掻出されて、間隔部Ａに付回り土壌等が残らないように掃除される。このため各車輪４のタイヤ３部、及びこのタイヤ３のセンタリング部１６や、ラグ部１７，１８による接地駆動力を有効に維持して、円滑な走行状態を維持する。
The wheel 4 that is grounded and rotated by driving rotation of the axle 2 causes the soil, mud, stone, gravel, straw, and the like to bite into the wheel interval portion A by the stepping pressure on the traveling soil surface during the traveling of the vehicle body 1. The wheel 4 is wound up or scraped up in the rotational direction. The soil or the like that is bitten and held by the spacing portion A is scraped to the rotation outer peripheral portion side by the scraper 5 intervening in the spacing portion A in the middle of the upward rotation stroke of the wheel 4, It is cleaned so that no soil or the like is attached to the space A. For this reason, the ground driving force by the tire 3 part of each wheel 4 and the centering part 16 and lug parts 17 and 18 of the tire 3 is effectively maintained to maintain a smooth running state.
請求項２に記載の発明は、前記スクレパー５は、車輪４の後方側に配置の作業ハンドル６側に設けて、この車輪４の前進回転時に巻き上げられる土壌を、この車輪４の回転の後側部へ掻出案内する掻出縁７を形成する。
According to a second aspect of the present invention, the scraper 5 is provided on the side of the work handle 6 disposed on the rear side of the wheel 4, and the soil wound up during the forward rotation of the wheel 4 is disposed on the rear side of the rotation of the wheel 4. A scraping edge 7 is formed to guide the scraping to the part.
前記スクレパー５は、車輪４の回転外周部であって、車体１の後方部に配置の作業ハンドル６の側に位置して構成し、この車輪４の後側上部のブラケット９に取付けて、スクレパー５先端部を前側の車輪４間隔部Ａに突出させて介入させる。従って、作業者が後方の作業ハンドル６を把持操作して前進走行しながら作業を行うとき、車輪４の間隔部Ａに咬込まれた土壌等が、後方上部へ巻き上げられると、前記スクレパー５の掻出縁７によって、この間隔部Ａの後側へ掻き出されて、走行踏圧跡の土壌面に排出される。
The scraper 5 is a rotating outer peripheral portion of the wheel 4 and is located on the side of the work handle 6 disposed in the rear portion of the vehicle body 1. The scraper 5 is attached to a bracket 9 on the rear upper side of the wheel 4, and is attached to the scraper. 5. The front end part protrudes into the front wheel 4 interval part A and intervenes. Therefore, when the worker performs the operation while gripping the rear work handle 6 and traveling forward, when the soil or the like bitten by the spacing portion A of the wheel 4 is rolled up to the rear upper part, the scraper 5 It is scraped out to the rear side of the space A by the scraping edge 7 and discharged to the soil surface of the running treading pressure trace.
請求項３に記載の発明は、前記スクレパー５は、車輪４の前側部Ｆと後側部Ｒとに配置して、車輪４の前進回転時に間隔部Ａを巻き上げられる土壌を、後側のスクレパー５で車輪４の後側部へ掻き出し、後進回転時に間隔部Ａを巻き上げられる土壌を、前側のスクレパー５で車輪４の前側部へ掻き出す。
According to a third aspect of the present invention, the scraper 5 is disposed on the front side portion F and the rear side portion R of the wheel 4 so that the soil that can wind up the spacing portion A during forward rotation of the wheel 4 is used as the rear scraper. 5 is scraped to the rear side of the wheel 4, and the soil that can wind up the gap A during reverse rotation is scraped to the front side of the wheel 4 by the front scraper 5.
前記スクレパ−５は、前輪４の前側部Ｆに配置のスクレパー５と、前側４の後側部Ｒに配置のスクレパー５とから構成して、車体１が前進するときは、この車輪４の前進回転によって後側へ巻き上げられる咬込土壌等を、後側のスクレパー５によって、間隔部Ａから後側へ掻き出すことができる。又、車体１が後進するときは、この車輪４の後進回転によって前側へ巻き上げられる咬込土壌等を、前側のスクレパー５によって、間隔部Ａから前側へ掻き出すことができる。
The scraper 5 is composed of a scraper 5 disposed on the front side F of the front wheel 4 and a scraper 5 disposed on the rear side R of the front side 4. When the vehicle body 1 moves forward, the scraper 5 moves forward. The biting soil or the like wound up to the rear side by the rotation can be scraped out from the interval portion A to the rear side by the rear scraper 5. Further, when the vehicle body 1 moves backward, biting soil or the like that is wound forward by the backward rotation of the wheel 4 can be scraped forward from the space A by the front scraper 5.
請求項４に記載の発明は、前記スクレパー５は、車輪４の前進回転時に巻き上げられる土壌を、後部側へ掻出案内する掻出縁７を形成すると共に、後進回転時に巻き上げられた土壌を前記タイヤ３内周部のリム部Ｂ側へ向けて掻込案内する掻込縁８を形成する。
The invention according to claim 4 is characterized in that the scraper 5 forms a scraped edge 7 that guides the soil wound up during forward rotation of the wheel 4 to the rear side, and the soil wound up during backward rotation. A scrambling edge 8 for scrambling and guiding toward the rim portion B side of the inner peripheral portion of the tire 3 is formed.
前記車輪４間隔部Ａの回転外周側に介入するスクレパー５には、前進回転時に巻き上げられる土壌を後部側へ掻き出す掻出縁７と、後進回転時に巻き上げられる土壌をタイヤ３内周部のリム部Ｂ側へ、即ち車輪４の回転中心側へ向けて掻込案内する掻込縁８を形成して、前進、後進いずれの走行方向の車輪４回転においても、スクレパー５の前、後両側縁部に形成される掻出縁７、又は掻込縁８によって、巻上土壌のタイヤ３の回転外周部への掻出排除、乃至はタイヤ３の回転内周部への掻込排除を行うことができる。
The scraper 5 that intervenes on the rotating outer periphery side of the wheel 4 spacing portion A includes a scraping edge 7 that scrapes the soil that is wound up at the time of forward rotation to the rear side, and the soil that is wound up at the time of backward rotation is the rim portion of the inner peripheral portion of the tire 3 By forming a scraping edge 8 for scrambling and guiding toward the B side, i.e., toward the center of rotation of the wheel 4, both front and rear edge portions of the scraper 5 in both forward and reverse traveling directions of the wheel 4 The scraped edge 7 or the scraped edge 8 formed on the outer periphery of the tire 3 can be removed from the outer periphery of the tire 3 or can be excluded from the inner periphery of the tire 3. it can.
請求項５に記載の発明は、車輪４回転の上側部の車体１側ブラケット９から、下方の車輪４間隔部Ａに亘って突出するスクレパー５の先端部には、前記タイヤ３の回転内周縁部Ｃ１から回転外周縁部Ｃ２に亘って掻出角（後退角）θ有した掻出縁７を形成する。
According to the fifth aspect of the present invention, the rotation inner peripheral edge of the tire 3 is provided at the tip end portion of the scraper 5 that protrudes from the vehicle body 1 side bracket 9 at the upper portion of the wheel 4 rotation to the lower wheel 4 interval portion A. A scraping edge 7 having a scraping angle (receding angle) θ is formed from the portion C1 to the rotation outer peripheral edge portion C2.
前記スクレパー５の掻出縁７は、車輪４の外周部のタイヤ３の回転域に対向して形成される。このタイヤ３の厚さ域の間隔部Ａが最も狭く、しかもこのタイヤ３の回転域に対向してラグ部１７，１８が突出形成されるため、土壌の巻き上げ作用が行なわれ易い。このため、このタイヤ３部の厚さ域として、回転内周縁Ｃ１から回転外周縁Ｃ２に亘るように掻出角（後退角）θを有した掻出縁７が、前記スクレパー５に形成される。この掻出縁７に沿って外周側へ掻出案内された土壌等は、間隔部Ａのタイヤ３側面等の摩擦、保持抵抗等が解放されて、スクレパー５の外周側へ排出される。
The scraping edge 7 of the scraper 5 is formed to face the rotation area of the tire 3 on the outer peripheral portion of the wheel 4. Since the gap portion A in the thickness region of the tire 3 is the narrowest and the lug portions 17 and 18 are formed so as to face the rotation region of the tire 3, the soil winding action is easily performed. Therefore, a scraping edge 7 having a scraping angle (receding angle) θ is formed in the scraper 5 so as to extend from the rotating inner peripheral edge C1 to the rotating outer peripheral edge C2 as a thickness region of the tire 3 part. . The soil and the like that are scraped and guided to the outer peripheral side along the scraping edge 7 are discharged to the outer peripheral side of the scraper 5 by releasing friction, holding resistance, and the like on the side surface of the tire 3 in the interval portion A.
請求項６に記載の発明は、スクレパー５は、弾器３９の付勢力に抗して、車輪４間隔部Ａ内所定域を揺動Ｄ可能に設ける。
In the invention according to claim 6, the scraper 5 is provided with a predetermined region in the wheel 4 interval portion A so as to be swingable D against the urging force of the ammunition 39.
前記車輪４間隔部Ａの巻き上げ土壌をスクレパー５によって回転外周部側へ掻き出すとき、この掻出抵抗によって弾器３９に抗して横方向へ揺動させたり、又、この弾器３９の弾発力によって戻し揺動して、車輪４間隔部Ａに巻上保持されている土壌を崩して脱落、乃至掻出し易くする。又、このようなスクレパー５は、車輪４のタイヤ３側面との抵抗力を受けても揺動Ｄされるため、タイヤ３の回転走行を円滑に行わせる。
When the rolled-up soil of the wheel 4 spacing portion A is scraped by the scraper 5 toward the rotating outer peripheral side, the scraping resistance causes it to swing laterally against the ammunition 39. By swinging back by force, the soil wound on the wheel 4 spacing portion A is crushed to make it easy to fall off or scrape. Further, since the scraper 5 is swung even when it receives a resistance force against the side surface of the tire 3 of the wheel 4, the tire 3 smoothly rotates.
請求項７に記載の発明は、スクレパー５の上端部を、車体１側ブラケット９に対して支持ピン１０周りに前後回動可能に枢支し、このスクレパー５の上端部とブラケット９部とに形成のピン穴１１，１２にロックピン１３を差し込むことによって、前記スクレパー５を掻出姿勢にしたり、非掻出姿勢にして切替可能な構成とする。
According to the seventh aspect of the present invention, the upper end of the scraper 5 is pivotally supported around the support pin 10 with respect to the vehicle body 1 side bracket 9 so as to be pivotable back and forth. By inserting the lock pin 13 into the formed pin holes 11 and 12, the scraper 5 can be switched to a scraped posture or a non-scraped posture.
前記スクレパー５の上端部は、ブラケット９に対して、前後２ヶ所の支持ピン１０とロックピン１３とによって固定される。スクレパー５を掻出姿勢にするときは、ロックピン１３をブラケット９のピン穴１１から抜き外して、スクレパー５を支持ピン１０の周りに回動して、このスクレパー５の下端部を車輪４間隔部Ａに介入させる。この掻出姿勢でロックピン１３をブラケット９のピン穴１２に差し込むことによって、この掻出姿勢位置を固定することができる。又、スクレパー５を前記掻出姿勢位置から非掻出姿勢に切替えるときは、前記ロックピン１３をピン穴１２から外して、スクレパー５を支持ピン１０の周りに回動して、車輪４間隔部Ａの外周部に回動させて、前記ロックピン１３をピン穴１１に挿し込むことによって行われる。
The upper end of the scraper 5 is fixed to the bracket 9 by support pins 10 and lock pins 13 at two front and rear positions. When the scraper 5 is in the scraping posture, the lock pin 13 is removed from the pin hole 11 of the bracket 9, the scraper 5 is rotated around the support pin 10, and the lower end portion of the scraper 5 is spaced from the wheel 4. Intervene in part A. By inserting the lock pin 13 into the pin hole 12 of the bracket 9 in this scraping posture, the scraping posture position can be fixed. Further, when the scraper 5 is switched from the scraping posture position to the non-scraping posture, the lock pin 13 is removed from the pin hole 12, and the scraper 5 is rotated around the support pin 10 so that the wheel 4 spacing portion is It is performed by rotating the outer periphery of A and inserting the lock pin 13 into the pin hole 11.
請求項８に記載の発明は、スクレパー５は、車輪４の上周部の車輪間隔部Ａに前後方向に亘って設け、この内縁１４をタイヤ３の回転内周縁Ｃ１に沿って湾曲形成すると共に、このスクレパー５の前、後端縁部には、車輪間隔部Ａを巻き上げられる土壌を車輪４の後側部へ掻き出す掻出縁７を形成する。
In the invention according to claim 8, the scraper 5 is provided in the wheel interval portion A of the upper peripheral portion of the wheel 4 in the front-rear direction, and the inner edge 14 is curved along the rotation inner peripheral edge C <b> 1 of the tire 3. The scraping edge 7 is formed on the front and rear edge portions of the scraper 5 to scrape the soil from which the wheel spacing portion A is wound up to the rear side portion of the wheel 4.
前記スクレパー５は、車輪４間隔部Ａの上半周部に沿って湾曲形態に形成されて、このスクレパー５の前端部、又は後端部に形成される掻出縁７を形成する。掻出縁７で掻き出された土壌等は、この掻出縁７の外周側へ掻出排出されて、スクレパー５湾曲形態の回転内周縁Ｃ１部によって、上半周部の間隔部Ａへの巻き上げ土壌の巻込みは阻止される。この間隔部Ａに巻込土壌があっても回転内周縁Ｃ１によって案内されて、車輪４の回転中心側の幅広いリム部Ｂに落下案内されて、土壌等の掻き回し、付き回り等を少くすることができる。
The scraper 5 is formed in a curved shape along the upper half periphery of the wheel 4 spacing portion A, and forms a scraped edge 7 formed at the front end portion or the rear end portion of the scraper 5. The soil or the like scraped by the scraping edge 7 is scraped and discharged to the outer peripheral side of the scraping edge 7, and is wound up to the interval portion A of the upper half peripheral portion by the rotating inner peripheral edge C1 portion of the curved shape of the scraper 5. Soil entrainment is prevented. Even if there is an entrained soil in the gap portion A, it is guided by the rotation inner peripheral edge C1, and is guided to fall to the wide rim portion B on the rotation center side of the wheel 4, so that the soil etc. is raked, and the amount of attachment is reduced. Can do.
請求項１に記載の発明は、前記にように車輪間隔部Ａを狭幅にした状態で作業走行する場合は、この間隔部Ａにスクレパー５を設けることにより、車輪４のタイヤ３間隔部Ａに咬込まれて掻き上げられる土壌等を、スクレパー５で回転外周部へ掻き出すようにして、車輪４回転の外周側へ排除して、間隔部Ａ内部を常時掃除、清掃するものであるから、構成はスクレパー５を設けるだけの簡単な構成であり、安価に製造することができ、管理作業時は、タイヤ３の走行状態を、的確な走行地面保持力、乃至駆動推進力を維持して、円滑で、軽快な車輪走行状態を維持できる。
In the first aspect of the invention, when the vehicle travels in a state where the wheel spacing portion A is narrow as described above, the scraper 5 is provided in the spacing portion A, so that the tire 3 spacing portion A of the wheel 4 is provided. Since the scraper 5 is scraped and scraped to the outer periphery of the rotation by the scraper 5 and excluded to the outer periphery of the rotation of the wheel 4, the inside of the space A is constantly cleaned and cleaned. The configuration is a simple configuration simply by providing the scraper 5 and can be manufactured at a low cost. During the management work, the traveling state of the tire 3 is maintained with an accurate traveling ground holding force or driving propulsion force, Smooth and light wheel running conditions can be maintained.
請求項２に記載の発明は、前記車輪４間隔部Ａに介入するスクレパー５を、車輪４の後側部に設けて、このスクレパー５の前端部を前側の間隔部Ａに介入させるものであるから、スクレパー５の構成、及び取付構成を簡単にして、生産コストを安価にすることができる。又、車体１の前進走行によって巻き上げられる土壌は、この走行車輪４の後側部の走行跡土壌面に掻出排出されるため、車輪４の回転される走行地面を荒らすことなく、又、掻き出された土壌等を再度巻き上げることもなく、円滑な走行状態を維持することができる。
According to the second aspect of the present invention, the scraper 5 that intervenes in the wheel 4 spacing portion A is provided in the rear side portion of the wheel 4, and the front end portion of the scraper 5 intervenes in the front spacing portion A. Thus, the configuration of the scraper 5 and the mounting configuration can be simplified, and the production cost can be reduced. Further, since the soil wound up by the forward traveling of the vehicle body 1 is scraped and discharged to the traveling trace soil surface of the rear side portion of the traveling wheel 4, the traveling ground on which the wheel 4 is rotated can be scraped and scraped. It is possible to maintain a smooth running state without rewinding the discharged soil or the like.
請求項３に記載の発明は、スクレパー５を車輪４の前側部Ｆと後側部Ｒとに配置して、車輪間隔部Ａにのぞませて、車輪４の前進走行時と後進走行時のいずれの走行においても、両スクレパー５，５を作用させて、間隔部Ａの巻き上げ土壌を排除するものであるから、前進、後進走行方向を問わず常時軽快な車輪４の回転、乃至走行状態を維持する。
In the invention according to claim 3, the scraper 5 is disposed on the front side portion F and the rear side portion R of the wheel 4, and is passed through the wheel interval portion A so that the wheel 4 can be moved forward and backward. In any travel, both scrapers 5 and 5 are acted to eliminate the winding soil of the interval portion A, so that the rotation of the wheel 4 or the travel state is always light regardless of the forward or reverse travel direction. maintain.
請求項４に記載の発明は、スクレパー５は、この前、後両側縁部に掻出縁７と掻込縁８を形成することができるため、スクレパー５を単一形態とすることができ、構成を簡単、コスト低減を図ることができる。車輪４の回転方向が切替えられて、スクレパー５の掻込縁８が働いて、タイヤ３間隔部Ａの巻上土壌が、スクレパー５の掻込縁８から車輪４の回転内周部側へ掻落すように案内されても、この回転内周部は、車輪４のリム部の間に比較的広く形成されるリム間隔部Ｂを形成し、前記掻込縁８によって掻込まれる土壌等は、このリム間隔部Ｂに掻込案内されるものであるから、掻込土壌の排出を円滑に行わせて、タイヤ３間隔部Ａにおける土詰り現象を少くすることができる。
In the invention according to claim 4, since the scraper 5 can form the scraping edge 7 and the scooping edge 8 on both front and rear side edges, the scraper 5 can be made into a single form, The configuration is simple and the cost can be reduced. The rotation direction of the wheel 4 is switched, and the scraping edge 8 of the scraper 5 works, so that the hoisting soil of the tire 3 spacing portion A is scraped from the scraping edge 8 of the scraper 5 toward the rotation inner peripheral side of the wheel 4. Even if guided so, the rotating inner peripheral portion forms a rim interval portion B that is formed relatively widely between the rim portions of the wheels 4, and the soil or the like that is scraped by the scraping edge 8 is Since the rim spacing portion B is guided to be scraped, the scraped soil can be discharged smoothly and the clogging phenomenon in the tire 3 spacing portion A can be reduced.
請求項５に記載の発明は、車輪４間隔部Ａに介入されるスクレパー５は、この車輪４のタイヤ３厚さに対向する回転領域に亘って掻出角θを形成の掻出縁７を形成するものであるから、スクレパー５の突出長さを必要最少限に短かく、細くして、掻出抵抗を小さくして、簡単、軽量、安価な構成とすることができる。
According to the fifth aspect of the present invention, the scraper 5 intervened in the wheel 4 spacing portion A has a scraping edge 7 that forms a scraping angle θ over a rotation region facing the tire 3 thickness of the wheel 4. Since it is formed, the protruding length of the scraper 5 can be made as short and thin as possible, and the scraping resistance can be reduced, so that a simple, lightweight and inexpensive configuration can be obtained.
請求項６に記載の発明は、車輪４間隔部Ａではスクレパー５が弾器３９に抗して揺動Ｄすることができるため、このスクレパー５の揺動Ｄによって、間隔部Ａを、巻上げられる土壌が崩れ易く、土壌が外周部側へ掻き出され易くなる。しかも、このスクレパー５と車輪４との間の巻上土壌を介在させた抵抗力が大きくなると揺動Ｄして、抵抗を逃すことができ、車輪４の駆動回転を円滑に、安定した状態に行わせることができる。
According to the sixth aspect of the present invention, since the scraper 5 can swing D against the ammunition 39 in the wheel 4 spacing portion A, the spacing portion A can be wound up by the swing D of the scraper 5. The soil is liable to collapse and the soil is easily scraped to the outer peripheral side. Moreover, when the resistance force with the winding soil between the scraper 5 and the wheel 4 is increased, the resistance is released by swinging D, and the driving rotation of the wheel 4 is smoothly and stably performed. Can be done.
請求項７に記載の発明は、前記スクレパー５は、ロックピン１３の差し替えによって、支持ピン１０周りに前後揺動させて、掻出姿勢と非掻出姿勢とに切替えることができ、スクレパー５は、常時支持ピン１０によって車体１側のブラケット９に保持された状態にあるから、これらスクレパー５や、支持ピン１０等の脱落等を少くすることができ、姿勢位置の切替を簡単、迅速に行うことができる。
According to the seventh aspect of the present invention, the scraper 5 can be switched back and forth between the scraping posture and the non-scraping posture by swinging back and forth around the support pin 10 by replacing the lock pin 13. Since the support pin 10 is always held by the bracket 9 on the vehicle body 1 side, the scraper 5, the support pin 10 and the like can be reduced and the posture position can be switched easily and quickly. be able to.
請求項８に記載の発明は、車輪４間隔部Ａ上周部のスクレパー５は、この前端縁、又は後端縁部に掻出縁７を形成して、間隔部Ａに巻きげられる土壌等を外周方向へ排除するが、この上半周部に形成の回転内周縁Ｃ１部によって、上方の土壌等の掻込、飛散等を阻止して、回転中心の車軸２部側へ落下案内させて、土壌等の掻き回し、付き回り等を少くすることができる。又、前記掻出縁７をスクレパー５の前、後端縁に形成するときは、これら掻出縁７を車輪４の前進回転ｆと後進回転ｒの双方で働かせることができ、円滑な走行状態を維持させることができる。又は、スクレパー５は、円弧状形態の一枚板によって形成して、構成を簡潔化することができ、わら屑等の巻込、巻付を少くすることができる。
In the invention according to claim 8, the scraper 5 in the upper peripheral part of the wheel 4 spacing part A forms a scraping edge 7 on the front edge or the rear edge, and is wound around the spacing part A, etc. The outer peripheral edge C1 formed on this upper half periphery prevents the upper soil from being scratched, scattered, etc., and guided to drop toward the axle 2 part of the center of rotation. It is possible to reduce the amount of scratching and attachment of the soil. Further, when the scraping edge 7 is formed at the front and rear end edges of the scraper 5, the scraping edge 7 can be operated by both the forward rotation f and the reverse rotation r of the wheel 4 so that the running state is smooth. Can be maintained. Alternatively, the scraper 5 can be formed by a single plate having an arc shape to simplify the configuration, and the winding and winding of straw scraps can be reduced.
図面に基づいて、作業機は後部に作業ハンドル６を有した車体１の下側に車輪４を車軸２に軸装し、この車輪４の後側部にロータリ形態の耕耘装置２０を装着したもので、車体１上側に搭載のエンジン２１によって、伝動カバー２２内のベルト、ミッションケース２３内の伝動ギヤ、車輪伝動ケース２４内のチエン等を介して、この車輪伝動ケース２４の下端部に軸装の車軸２、及びこの車軸２の車輪４を伝動回転して、前、後進走行できる形態としている。又、前記ミッションケース２３の後部に装着の耕耘装置２０は、ミッションケース２３の伝動ギヤから、このミッションケース２３に連結の耕耘伝動ケース２５内のチエン等を介して、この耕耘伝動ケース２５の下端部に軸装の耕耘軸２６を伝動回転して、この耕耘軸２６周りに配置の耕耘爪２７を回転することによって、走行圃場の土壌面Ｅを耕耘したり、除草することができる。
Based on the drawings, the working machine has a wheel 4 mounted on the axle 2 below the vehicle body 1 having a work handle 6 at the rear, and a rotary-type tilling device 20 is mounted on the rear side of the wheel 4. Thus, the engine 21 mounted on the upper side of the vehicle body 1 is attached to the lower end portion of the wheel transmission case 24 via a belt in the transmission cover 22, a transmission gear in the transmission case 23, a chain in the wheel transmission case 24, and the like. The axle 2 and the wheel 4 of the axle 2 are transmitted and rotated so that they can travel forward and backward. Further, the tilling device 20 attached to the rear part of the transmission case 23 is connected to the lower end of the transmission case 25 from the transmission gear of the transmission case 23 through a chain or the like in the transmission case 25 connected to the transmission case 23. The soil surface E of the traveling field can be cultivated or weeded by rotating the cultivating shaft 26 mounted on the shaft and rotating the cultivating claws 27 arranged around the cultivating shaft 26.
前記車輪４は、中心部のボス２８の周りに放射方向にチューブ（パイプ材形態）スポーク２９を形成し、この先端部に円形のチューブリム１５を形成して、このチューブリム１５の周りにゴム製タイヤ３を接着して、一体的構成とする。このチューブリム１５の外周を覆うように形成するタイヤ３の外周部には、センタリング部１６を突出させて、先端面を接地させて回転することができ、このセンタリング部１６には一定間隔位置に凹部１９を形成し、各凹部１９の前端縁、又は後端縁部にラグ１７、又は１８を一体的に形成している。これらセンタリング部１６、及びラグ１７，１８の外周端縁は、この車輪４の回転外周縁部Ｃ２位置と略同一位置に設定して、地面、土壌面Ｅに対する接地支持力を得るように構成している。車輪４は、間隔部Ａを介して左右両側部に対向するように、ボス２８と車軸２との間のピン穴にセットピン３０を挿通して、車輪間隔部Ａに設定する。
The wheel 4 is formed with a tube (pipe material form) spoke 29 around a boss 28 in a central portion in a radial direction, a circular tube rim 15 is formed at the tip, and a rubber is formed around the tube rim 15. The tire 3 is bonded to form an integral structure. A centering portion 16 protrudes from the outer periphery of the tire 3 formed so as to cover the outer periphery of the tube rim 15 and can be rotated with the front end surface being grounded. A recess 19 is formed, and lugs 17 or 18 are integrally formed at the front end edge or rear end edge of each recess 19. The outer peripheral edges of the centering portion 16 and the lugs 17 and 18 are set at substantially the same position as the rotational outer peripheral edge portion C2 of the wheel 4 so as to obtain a grounding support force for the ground and the soil surface E. ing. The wheel 4 is set to the wheel interval portion A by inserting the set pin 30 into the pin hole between the boss 28 and the axle 2 so as to face both the left and right sides via the interval portion A.
このような車輪４は、車軸２の左右両側部に対向する一対の形態に設定されて、左側の車輪４Ｌと右側の車輪４Ｒとの間を広幅Ｌ２適宜間隔Ａ１に、又は左側の車輪４Ｌと右側の車輪４Ｒとの間を狭幅間隔Ａ２に設定している。この対向する車輪４Ｌ，４Ｒのタイヤ３は、ラグ１７，１８を内側、又は外側へ広く、長く突出させて形成し、間隔Ａ１が広い形態（図４）では、前記ラグ１７，１８部を内側へ対向させ、間隔Ａ２が狭い形態（図３）では、前記ラグ１７，１８部を外側へ対向させている。前記スクレパー５は、厚手の板金材から形成して、上端部を車体１の底部に形成のブラケット９に取付けて、下端部の掻出縁７部を前記車輪間隔部Ａの前部、又は、後部にのぞませるように介装する。
Such a wheel 4 is set in a pair of configurations facing the left and right side portions of the axle 2, and the width L2 between the left wheel 4L and the right wheel 4R is set at an appropriate distance A1, or the left wheel 4L. A narrow space A2 is set between the right wheel 4R and the right wheel 4R. The tires 3 of the opposing wheels 4L and 4R are formed by projecting the lugs 17 and 18 wide and long inwardly or outwardly, and in the form where the gap A1 is wide (FIG. 4), the lugs 17 and 18 are disposed on the inner side. In the form where the interval A2 is narrow (FIG. 3), the lugs 17 and 18 are opposed to the outside. The scraper 5 is formed of a thick sheet metal material, and an upper end portion is attached to a bracket 9 formed on the bottom portion of the vehicle body 1, and a scraping edge 7 portion of the lower end portion is a front portion of the wheel interval portion A, or Interpose it so that it looks into the back.
又、図３，図４における車軸２に対する車輪３の配置は、車輪伝動ケース２４が車体１の左、右一側部に偏倚して構成された形態であり、車輪４を車体１幅の中央部に配置するために、車軸２を車輪伝動ケース２４の右側に片持ち形態に突出させて、この車軸２に車輪４を軸装している。又、車輪伝動ケース２４と車軸アームとを車体１の左右両側部側から下方へ突出させて、これらの下端部間に亘って車軸の左右両端部を左右両持ち形態に軸受けして、この車軸の車体幅中央部に車輪を軸装する形態とすることもできる。
3 and 4 is arranged such that the wheel transmission case 24 is configured such that the wheel transmission case 24 is biased to the left and right side portions of the vehicle body 1, and the wheel 4 is arranged at the center of the vehicle body 1 width. Therefore, the axle 2 is protruded in a cantilever form on the right side of the wheel transmission case 24, and the wheel 4 is mounted on the axle 2. Further, the wheel transmission case 24 and the axle arm are protruded downward from the left and right side portions of the vehicle body 1, and the left and right ends of the axle are supported in a left and right supported form across these lower ends. It can also be set as the form which mounts a wheel in the vehicle body width center part.
ミッションケース２３の後端部に、作業機として耕耘装置２０の耕耘フレーム５０を取付けて、この耕耘伝動ケース２５の耕耘軸２６を連動回転する。耕耘爪２７の回転上周部には耕耘カバー３１、リヤカバー３２を設け、耕耘フレーム５０の後端には耕耘幅の中央部に培土溝を形成する培土板３３を設けている。作業ハンドル６は、この耕耘装置２０の後側上方部にあって、ハンドルフレーム３６の基部は、車体１の後上端部に対して水平方向へ旋回可能に支持させてある。３８は車体１の前端下部に設けたスタンドで、前後に回動させて、地面に支持させる支持姿勢と、後方上部へ回動させて、収納姿勢とに切替回動させることができる。
A tilling frame 50 of the tilling device 20 is attached to the rear end portion of the mission case 23 as a working machine, and the tilling shaft 26 of the tilling transmission case 25 rotates in conjunction with the tilling frame. A tilling cover 31 and a rear cover 32 are provided on the rotation upper peripheral portion of the tilling claw 27, and a cultivating plate 33 is provided at the rear end of the cultivating frame 50 to form a cultivating groove in the central portion of the tilling width. The work handle 6 is in the rear upper part of the tilling device 20, and the base of the handle frame 36 is supported so as to be turnable in the horizontal direction with respect to the rear upper end of the vehicle body 1. Reference numeral 38 denotes a stand provided at the lower front end of the vehicle body 1, which can be rotated back and forth to be supported on the ground and rotated to the upper rear to be switched between a storage posture.
ここにおいて、車体１の車軸２に対して、外周部にタイヤ３を形成した左右一対の車輪４を軸方向に接近させて、タイヤ幅を狭幅の間隔部Ａにして軸装すると共に、前記間隔部Ａには、この間隔部Ａに巻込まれる土壌を回転外周部へ掻き出すスクレパー５を介装したことを特徴とする管理作業機の走行車輪の構成とする。
Here, with respect to the axle 2 of the vehicle body 1, a pair of left and right wheels 4 having tires 3 formed on the outer peripheral portion thereof are approached in the axial direction, and the tire width is axially mounted with a narrow interval portion A. The spacing portion A has a configuration of a traveling wheel of a management work machine characterized by interposing a scraper 5 that scrapes the soil that is caught in the spacing portion A to the rotating outer peripheral portion.
車体１は、車軸２の上側部にエンジンベース等を設け、この後方に作業ハンドル６を突出させて、この作業ハンドル６を歩行操作しながら、前記車体１の後部、又は前部に装着する作業部を駆動して、耕耘や、中耕、除草、薬剤防除等の各種対地作業、管理作業を行うものである。車輪４は、周面にゴム製のタイヤ３を一体的に成形したもので、車輪４のチューブリム１５の外周部に、ゴム製タイヤ３を適宜層厚さに形成している。このタイヤ３は、チューブリム１５の外周面に着脱可能に構成することも可能である。前記タイヤ３の回転外周部には、タイヤ３幅の中央部に沿って常時接地した状態で回転するセンタリング部１６を側面視で略円形状の形態に形成し、このセンタリング部１６の左右両側部には、ラグ部１７，１８一定間隔に配置形成して側方へ突出させている。前記センタリング部１６には、各ラグ部１７，１８との交差連結部において、凹む凹部１９を形成して、車輪４走行時の駆動を円滑に行わせる形態としている。又、前記ラグ１７は横側へ長く、広く突出する形態とし、このラグ部１７と一つ置きに形成のラグ部１８は、前記ラグ１７よりも短かく、狭く突出される。これら各ラグ部１７，１８の回転外周端縁は、前記センタリング部１６の外周端縁部と略同回転径に設定して、接地回転幅、駆動幅を広くするように形成している。
The vehicle body 1 is provided with an engine base or the like on the upper side of the axle 2, a work handle 6 is protruded behind this, and the work handle 6 is walked and attached to the rear or front of the vehicle body 1. The unit is driven to perform various ground work and management work such as tillage, middle tillage, weeding, and chemical control. The wheel 4 is formed by integrally molding a rubber tire 3 on the peripheral surface, and the rubber tire 3 is appropriately formed in a layer thickness on the outer peripheral portion of the tube rim 15 of the wheel 4. The tire 3 can also be configured to be detachable from the outer peripheral surface of the tube rim 15. Centering portions 16 that rotate in a state where they are always grounded along the central portion of the width of the tire 3 are formed in a substantially circular shape in a side view on the outer periphery of the tire 3. The lug portions 17 and 18 are arranged and formed at regular intervals so as to protrude sideways. The centering portion 16 is formed with a recessed portion 19 that is recessed at the cross connection portion with each lug portion 17, 18, so that the driving during the traveling of the wheel 4 is performed smoothly. Further, the lug 17 is long and protrudes to the side, and the lugs 18 formed alternately with the lugs 17 are shorter and narrower than the lugs 17. The rotation outer peripheral edges of the lugs 17 and 18 are set to have substantially the same rotation diameter as the outer peripheral edge of the centering part 16 so as to widen the ground rotation width and the driving width.
前記車体１の作業走行時に、車軸２の駆動回転によって接地回転される車輪４は、走行土壌面に対する踏圧によって、土壌や、泥土、石礫、わら屑等を車輪間隔部Ａに咬込ませて、この車輪４の回転方向へ巻き上げ、乃至掻き上げるようになる。この間隔部Ａに咬込保持されて掻き上げられる土壌等は、車輪４の上昇回転行程途中において、この間隔部Ａに介入しているスクレパー５によって、この回転外周部側へ掻出されて、間隔部Ａに付回り土壌等が残らないように掃除される。このため各車輪４のタイヤ３部、及びこのタイヤ３のセンタリング部１６や、ラグ部１７，１８による接地駆動力を有効に維持して、円滑な走行状態を維持する。
The wheel 4 that is grounded and rotated by driving rotation of the axle 2 causes the soil, mud, stone, gravel, straw, and the like to bite into the wheel interval portion A by the stepping pressure on the traveling soil surface during the traveling of the vehicle body 1. The wheel 4 is wound up or scraped up in the rotational direction. The soil or the like that is bitten and held by the spacing portion A is scraped to the rotation outer peripheral portion side by the scraper 5 intervening in the spacing portion A in the middle of the upward rotation stroke of the wheel 4, It is cleaned so that no soil or the like is attached to the space A. For this reason, the ground driving force by the tire 3 part of each wheel 4 and the centering part 16 and lug parts 17 and 18 of the tire 3 is effectively maintained to maintain a smooth running state.
又、前記スクレパー５は、車輪４の後方側に配置の作業ハンドル６側に設けて、この車輪４の前進回転ｆ時に巻き上げられる土壌を、この車輪４の回転の後側部へ掻出案内する掻出縁７を形成する。
The scraper 5 is provided on the side of the work handle 6 disposed on the rear side of the wheel 4 and guides the soil wound up during the forward rotation f of the wheel 4 to the rear side of the rotation of the wheel 4. A scraped edge 7 is formed.
前記スクレパー５は、車輪４の回転外周部であって、車体１の後方部に配置の作業ハンドル６の側に位置して構成し、この車輪４の後側上部のブラケット９に取付けて、スクレパー５先端部を前側の車輪４間隔部Ａに突出させて介入させる。従って、作業者が後方の作業ハンドル６を把持操作して前進走行しながら作業を行うとき、車輪４の間隔部Ａに咬込まれた土壌等が、後方上部へ巻き上げられると、前記スクレパー５の掻出縁７によって、この間隔部Ａの後側へ掻き出されて、走行踏圧跡の土壌面に排出される。
The scraper 5 is a rotating outer peripheral portion of the wheel 4 and is located on the side of the work handle 6 disposed in the rear portion of the vehicle body 1. The scraper 5 is attached to a bracket 9 on the rear upper side of the wheel 4, and is attached to the scraper. 5. The front end part protrudes into the front wheel 4 interval part A and intervenes. Therefore, when the worker performs the operation while gripping the rear work handle 6 and traveling forward, when the soil or the like bitten by the spacing portion A of the wheel 4 is rolled up to the rear upper part, the scraper 5 It is scraped out to the rear side of the space A by the scraping edge 7 and discharged to the soil surface of the running treading pressure trace.
又、前記スクレパー５は、車輪４の前側部Ｆと後側部Ｒとに配置して、車輪４の前進回転ｆ時に間隔部Ａを巻き上げられる土壌を、後側のスクレパー５で車輪４の後側部へ掻き出し、後進回転ｒ時に間隔部Ａを巻き上げられる土壌を、前側のスクレパー５で車輪４の前側部へ掻き出す。
The scraper 5 is disposed on the front side portion F and the rear side portion R of the wheel 4 so that the soil that can wind up the gap portion A during the forward rotation f of the wheel 4 is rearranged by the rear scraper 5. Soil is scraped out to the side, and the soil that can wind up the gap A during reverse rotation r is scraped out to the front side of the wheel 4 by the front scraper 5.
前記スクレパ−５は、前輪４の前側部Ｆに配置のスクレパー５と、前側４の後側部Ｒに配置のスクレパー５とから構成して、車体１が前進するときは、この車輪４の前進回転ｆによって後側へ巻き上げられる咬込土壌等を、後側のスクレパー５によって、間隔部Ａから後側へ掻き出すことができる。又、車体１が後進するときは、この車輪４の後進回転ｒによって前側へ巻き上げられる咬込土壌等を、前側のスクレパー５によって、間隔部Ａから前側へ掻き出すことができる。
The scraper 5 is composed of a scraper 5 disposed on the front side F of the front wheel 4 and a scraper 5 disposed on the rear side R of the front side 4. When the vehicle body 1 moves forward, the scraper 5 moves forward. The biting soil or the like wound up to the rear side by the rotation f can be scraped out from the gap portion A to the rear side by the rear scraper 5. Further, when the vehicle body 1 moves backward, the biting soil or the like wound up forward by the backward rotation r of the wheel 4 can be scraped forward from the interval portion A by the front scraper 5.
又、前記スクレパー５は、車輪４の前進回転時に巻き上げられる土壌を、後部側へ掻出案内する掻出縁７を形成すると共に、後進回転時に巻き上げられた土壌を前記タイヤ３内周部リム部Ｂ側へ向けて掻込案内する掻込縁８を形成する。
The scraper 5 forms a scraping edge 7 that guides the soil wound up during the forward rotation of the wheel 4 to the rear side, and the soil wound up during the backward rotation is used to remove the soil wound up during the backward rotation. A scribing edge 8 is formed to guide the scoring toward the B side.
前記車輪４間隔部Ａの回転外周側に介入するスクレパー５には、前進回転ｆ時に巻き上げられる土壌を後部側へ掻き出す掻出縁７と、後進回転ｒ時に巻き上げられる土壌をタイヤ３内周部のリム部Ｂ側へ、即ち車輪４の回転中心側へ向けて掻込案内する掻込縁８を形成して、前進、後進いずれの走行方向の車輪４回転においても、スクレパー５の前、後両側縁部に形成される掻出縁７、又は掻込縁８によって、巻上土壌のタイヤ３の回転外周部への掻出排除、乃至はタイヤ３の回転内周部への掻込排除を行うことができる。
The scraper 5 that intervenes on the rotation outer periphery side of the wheel 4 interval portion A has a scraping edge 7 that scrapes the soil wound up at the time of forward rotation f to the rear side, and the soil wound up at the time of reverse rotation r at the inner peripheral portion of the tire 3. By forming a scraping edge 8 for scrambling and guiding toward the rim B side, that is, toward the center of rotation of the wheel 4, both front and rear sides of the scraper 5 in both forward and reverse traveling directions of the wheel 4 The scraped edge 7 or the scraped edge 8 formed on the edge portion eliminates scraping of the winding soil to the rotating outer peripheral portion of the tire 3 or scraping to the rotating inner peripheral portion of the tire 3. be able to.
又、車輪４回転の上側部の車体１側ブラケット９から、下方の車輪４間隔部Ａに亘って突出するスクレパー５の先端部には、前記タイヤ３の回転内周縁部Ｃ１から回転外周縁部Ｃ２に亘って後退角θを有した掻出縁７を形成する。
Further, from the vehicle body 1 side bracket 9 on the upper side of the rotation of the wheel 4 to the tip of the scraper 5 protruding across the lower wheel 4 interval portion A, the rotation outer peripheral edge portion from the rotation inner peripheral edge portion C1 of the tire 3 is provided. A scraping edge 7 having a receding angle θ is formed over C2.
前記スクレパー５の掻出縁７は、車輪４の外周部のタイヤ３の回転域に対向して形成される。このタイヤ３の厚さ域の間隔部Ａが最も狭く、しかもこのタイヤ３の回転域に対向してラグ部１７，１８が突出形成されるため、土壌の巻き上げ作用が行なわれ易い。このため、このタイヤ３部の厚さ域として、回転内周縁Ｃ１から回転外周縁Ｃ２に亘るように掻出角θを有した掻出縁７が、前記スクレパー５に形成される。この掻出縁７に沿って外周側へ掻出案内された土壌等は、間隔部Ａのタイヤ３側面等の摩擦、保持抵抗等が解放されて、スクレパー５の外周側へ排出される。
The scraping edge 7 of the scraper 5 is formed to face the rotation area of the tire 3 on the outer peripheral portion of the wheel 4. Since the gap portion A in the thickness region of the tire 3 is the narrowest and the lug portions 17 and 18 are formed so as to face the rotation region of the tire 3, the soil winding action is easily performed. For this reason, a scraping edge 7 having a scraping angle θ is formed on the scraper 5 so as to extend from the rotation inner peripheral edge C1 to the rotation outer peripheral edge C2 as a thickness region of the tire 3 part. The soil and the like that are scraped and guided to the outer peripheral side along the scraping edge 7 are discharged to the outer peripheral side of the scraper 5 by releasing friction, holding resistance, and the like on the side surface of the tire 3 in the interval portion A.
又、スクレパー５は、弾器３９の付勢力に抗して、車輪４間隔部Ａ内所定域を揺動Ｄ可能に設ける。
Further, the scraper 5 resists the urging force of the ammunition 39 and provides a predetermined area in the wheel 4 spacing portion A so as to be swingable D.
前記車輪４間隔部Ａの巻上土壌をスクレパー５によって回転外周部側へ掻き出すとき、この掻出抵抗によって弾器３９に抗して横方向へ揺動させたり、又、この弾器３９の弾発力によって戻し揺動して、車輪４間隔部Ａに巻上保持されている土壌を崩して脱落、乃至掻出し易くする。又、このようなスクレパー５は、車輪４のタイヤ３側面との抵抗力を受けても揺動Ｄされるため、タイヤ３の回転走行を円滑に行わせる。
When the scraped soil is scraped out to the rotating outer peripheral portion by the scraper 5, the wheel 4 spacing portion A is swung laterally against the bullet 39 by the scraping resistance. It swings back by the generated force, and the soil wound up on the wheel 4 spacing portion A is broken to make it easy to fall off or scrape. Further, since the scraper 5 is swung even when it receives a resistance force against the side surface of the tire 3 of the wheel 4, the tire 3 smoothly rotates.
又、スクレパー５の上端部を、車体１側ブラケット９に対して支持ピン１０周りに前後回動可能に枢支し、このスクレパー５の上端部とブラケット９部とに形成のピン穴１１，１２にロックピン１３を差し込むことによって、前記スクレパー５を掻出姿勢にしたり、非掻出姿勢にして切替可能な構成とする。
Further, the upper end portion of the scraper 5 is pivotally supported around the support pin 10 with respect to the bracket 1 on the vehicle body 1 so as to be pivotable back and forth, and pin holes 11 and 12 formed in the upper end portion of the scraper 5 and the bracket 9 portion. By inserting the lock pin 13 into the scraper 5, the scraper 5 can be changed to a scraped posture or a non-scraped posture.
前記スクレパー５の上端部は、ブラケット９に対して、前後２ヶ所の支持ピン１０とロックピン１３とによって固定される。スクレパー５を掻出姿勢にするときは、ロックピン１３をブラケット９のピン穴１１から抜き外して、スクレパー５を支持ピン１０の周りに回動して、このスクレパー５の下端部を車輪４間隔部Ａに介入させる。この掻出姿勢でロックピン１３をブラケット９のピン穴１２に差し込むことによって、この掻出姿勢位置を固定することができる。又、スクレパー５を前記掻出姿勢位置から非掻出姿勢に切替えるときは、前記ロックピン１３をピン穴１２から外して、スクレパー５を支持ピン１０の周りに回動して、車輪４間隔部Ａの外周部に回動させて、前記ロックピン１３をピン穴１１に挿し込むことによって行われる。
The upper end of the scraper 5 is fixed to the bracket 9 by support pins 10 and lock pins 13 at two front and rear positions. When the scraper 5 is in the scraping posture, the lock pin 13 is removed from the pin hole 11 of the bracket 9, the scraper 5 is rotated around the support pin 10, and the lower end portion of the scraper 5 is spaced from the wheel 4. Intervene in part A. By inserting the lock pin 13 into the pin hole 12 of the bracket 9 in this scraping posture, the scraping posture position can be fixed. Further, when the scraper 5 is switched from the scraping posture position to the non-scraping posture, the lock pin 13 is removed from the pin hole 12, and the scraper 5 is rotated around the support pin 10 so that the wheel 4 spacing portion is It is performed by rotating the outer periphery of A and inserting the lock pin 13 into the pin hole 11.
又、スクレパー５は、車輪４の上周部の車輪間隔部Ａに前後方向に亘って設け、この内縁１４をタイヤ３の回転内周縁Ｃ１に沿って湾曲形成すると共に、このスクレパー５の前、後端縁部には、車輪間隔部Ａを巻き上げられる土壌を車輪４の後側部へ掻き出す掻出縁７を形成する。
In addition, the scraper 5 is provided in the wheel interval portion A on the upper peripheral portion of the wheel 4 in the front-rear direction, and the inner edge 14 is curved along the rotation inner peripheral edge C1 of the tire 3, and in front of the scraper 5, On the rear edge, a scraping edge 7 is formed to scrape the soil from which the wheel interval A is wound up to the rear side of the wheel 4.
前記スクレパー５は、車輪４間隔部Ａの上半周部に沿って湾曲形態に形成されて、このスクレパー５の前端部、又は後端部に形成される掻出縁７を形成する。掻出縁７で掻き出された土壌等は、この掻出縁７の外周側へ掻出排出されて、スクレパー５湾曲形態の回転内周縁Ｃ１部によって、上半周部の間隔部Ａへの巻上土壌の巻込みは阻止される。この間隔部Ａに巻込土壌があっても回転内周縁Ｃ１によって案内されて、車輪４の回転中心側の幅広いリム部Ｂに落下案内されて、土壌等の掻き回し、付き回り等を少くすることができる。
The scraper 5 is formed in a curved shape along the upper half periphery of the wheel 4 spacing portion A, and forms a scraped edge 7 formed at the front end portion or the rear end portion of the scraper 5. The soil or the like scraped by the scraping edge 7 is scraped and discharged to the outer peripheral side of the scraping edge 7, and is wound around the spacing portion A in the upper half peripheral portion by the rotating inner peripheral edge C1 portion of the curved shape of the scraper 5. Involvement of upper soil is prevented. Even if there is an entrained soil in the gap portion A, it is guided by the rotation inner peripheral edge C1, and is guided to fall to the wide rim portion B on the rotation center side of the wheel 4, so that the soil etc. is raked, and the amount of attachment is reduced. Can do.
前記車輪４のタイヤ３部は、チューブリム１５部や、チューブスポーク２９等の幅よりも広く左右両側へ張出形成されているため、左右一対の車輪４のボス部２８位置を一定位置とすれば、左右一対の車輪４間の間隔部Ａは、この車輪４の外周タイヤ３部でのタイヤ間隔部Ａは狭く、チューブリム１５やスポーク２９等におけるリム部Ｂは広く形成される。又、図３、図４のように、タイヤ３ラグ部１７，１８の張出幅を側と右側で異にする形態では、このタイヤ３ラグ部１７，１８の向きを内側に対向させたり（図４）、外側に対向させる（図３）ことによって、車輪間隔部Ａを変更することができ、左右車輪４の絶対車輪幅Ｌを狭幅Ｌ１、又は広幅Ｌ２に変えることができる。この車輪幅Ｌは、作業条の条間幅や、畝間溝幅等に応じて作業走行に適応するように設定する。
Since the tire 3 part of the wheel 4 is formed so as to project to the left and right sides wider than the width of the tube rim 15 part, the tube spoke 29, etc., the position of the boss part 28 of the pair of left and right wheels 4 is set to a fixed position. For example, the distance A between the pair of left and right wheels 4 is narrow in the tire distance A in the outer peripheral tire 3 of the wheel 4 and the rim B in the tube rim 15, the spoke 29, and the like is formed wide. Further, as shown in FIGS. 3 and 4, in the form in which the protruding widths of the tire 3 lug portions 17 and 18 are different between the right side and the right side, the directions of the tire 3 lug portions 17 and 18 are opposed to the inside ( 4), by facing the outside (FIG. 3), the wheel spacing portion A can be changed, and the absolute wheel width L of the left and right wheels 4 can be changed to the narrow width L1 or the wide width L2. The wheel width L is set so as to be adapted to work travel according to the width of the work stripe, the groove width of the ribs, and the like.
前記車輪４の間隔部Ａに介入するスクレパー５は、図１、図７のように、車輪４の後側部に取ける形態としているが、図２のように車輪４の前側部と後側部とに配置するもよく、又、スクレパー５を前後に長く円弧状形態にして、（図６）、間隔部Ａの上半部に設け、この前後両端部に掻出縁７を形成する形態とすることも可能である。
The scraper 5 intervening in the spacing portion A of the wheel 4 is configured to be taken at the rear side portion of the wheel 4 as shown in FIGS. 1 and 7, but the front side portion and the rear side of the wheel 4 as shown in FIG. In addition, the scraper 5 may be formed in an arc shape that is long in the front-rear direction (FIG. 6), provided in the upper half portion of the spacing portion A, and the scraping edge 7 is formed at both front and rear end portions. It is also possible.
前記スクレパー５を左右方向へ揺動Ｄ可能に構成（図５）場合は、前記上端部の支持ピン１０、及びロックピン１３による取付嵌合部を、大きめのピン穴４０に形成して、前記支持ピン１０やロックピン１３に対して左右横方向へ揺動Ｄ自在に設け、このスクレパー５の途中位置には、ブラケット９に設けたガイドピン４１にピン穴４２を嵌合させて、左右摺動自在に案内させる。このガイドピン４１の調節ナット４３を前記スクレパー５との間につる巻きスプリングからなる弾器３９を介装して、このスクレパー５をブラケット９の側面に適宜圧力で弾発させている。スクレパー５に対する左側から圧力が大きくなると、前記弾器３９を圧縮して、右側へ揺動Ｄし、この圧力が小さくなると弾器３９の弾発力で左側へ揺り戻される。
When the scraper 5 is configured to be swingable in the left-right direction (FIG. 5), the fitting pinion portion by the support pin 10 and the lock pin 13 at the upper end portion is formed in a large pin hole 40, and The support pin 10 and the lock pin 13 are provided so as to be swingable in the left and right lateral directions. A pin hole 42 is fitted to a guide pin 41 provided in the bracket 9 at a midway position of the scraper 5 to slide left and right. Let them move freely. The adjusting nut 43 of the guide pin 41 is interposed between the scraper 5 and an elastic device 39 made of a winding spring, and the scraper 5 is repelled on the side surface of the bracket 9 with appropriate pressure. When the pressure increases from the left side with respect to the scraper 5, the ammunition 39 is compressed and swung D to the right, and when this pressure decreases, it is swung back to the left by the resilience of the ammunition 39.
即ち、スクレパー５に作用する左側のタイヤ３側から押圧される押圧力と、右側にタイヤ３側から押圧される押圧力との差によって右側、又は左側へ揺動Ｄされる。従って、揺動される側のタイヤ３側面に強く接当するのを防止して、過負荷駆動回転を軽減する。
That is, it swings D rightward or leftward depending on the difference between the pressing force pressed from the left tire 3 acting on the scraper 5 and the pressing force pressed from the tire 3 side to the right. Accordingly, it is possible to prevent strong contact with the side surface of the tire 3 to be swung, thereby reducing overload drive rotation.
