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.