捌、新型說明： 【新型所屬之技術領域】 本新型是有關於一種農機底盤，特別是指一種二輪驅 動四輪轉向之農機底盤。 【先前技術】 一般割草車、耕耘機、播種機、或農用搬運車等農機 車體，因使用範圍限制於耕地，且於行駛中需同時進行割 草、耕耘、播種或採收等其他農事作業，因此，一般農機 車體之底盤在設計上所能行駛的速度與動力較低，故其驅 動方式多為前輪轉向、後輪傳動之二輪驅動方式。 然而，二輪驅動之農機車體於轉向時，是藉由二前之 輪擺動而帶動整個車體轉向，而二後輪僅是受該二前輪之 帶動前進並未同時進行擺動，因此，習知二輪驅動之農機 車體之轉f半徑較大。當實際進行農務時，作業人員會駕 驶農機車體於耕地上來回折返行駛，使農機車體行經耕地 的每-角落，且-般耕地幅員有限，農機車體來回行驶的 頻率極高，因而常會留下較大的耕作死角而需多次行經該 處’方能達到確實行遍耕地之目的。 因此，習知二輪驅動之農機車體在實際使用上，因轉 半徑較大、所需行駛的路程較長，相對會提高耗油量而 浪費農作成本、延長農作時間而降低作業效率；且因轉彎 半徑較大，在操作上亦不具便利性。 【新型内容】 本新型二輪驅動四輪轉向之農機底盤，包含一機座、 4 M240783 一设於機座前方之前車輪組、一可間接驅動前車輪組之動 力轉換裝置、一設於機座後方之後車輪組，及一可同時連 動刚、後車輪組之車輪組連動單元。而該車輪組連動單元 具有一方向控制裝置、一受動於該方向控制裝置而可連動 刖車輪組之第一連動組，及一受動於該方向控制裝置而可 連動後車輪組之第二連動組。本新型利用前揭構件之聯結 關係，在操作上可藉由該方向控制裝置控制前車輪組之右 前車輪擺動，同時使該後車輪組之左後車輪進行反向之擺 動，而使農機車體達到以二輪驅動四輪轉向之目的。 本新型之功效是在提供一種以二輪驅動四輪轉向之 農機底盤農機底盤，使農機車體可以較小之轉彎半徑於耕 地進行農務，而能降低耗油量以節省農作成本、縮短農作 時間以提升作業效率，同時達到操作便利等功效。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 參閱圖1，本新型二輪驅動四輪轉向之農機底盤1之 較佳實施例包含··一機座n、一設於該機座u前方之前 車輪組12、一可間接驅動該前車輪組12之動 13、一設於該機座U後方之後車輪組14，及一可同時連 動該前、後車輪組12、14之車輪組連動單元15。 配合圖2所示，該前車輪組12，具有二分設於機座 11前方二側之右前車輪121與左前車輪122、二分設於該 5 M240783 右、左前車輪121、122上之第一萬向接頭123與第二萬 向接頭124，及一連接該第一、第二萬向接頭123、124之 前車輪軸125。 該動力轉換裝置13，設於該前車輪組12之前車輪軸 5 125上而可間接驅動該前車輪軸125旋轉，進而帶動該右、 左前車輪121、122同時旋轉。 該後車輪組14，具有二分設於該機座η後方二側之 左後車輪141與右後車輪142，及一連接該左、右後車輪 141、142之後車輪軸143。 10 該車輪組連動單元15,具有一方向控制裝置15〇、一 第一連動組151，及一第二連動組152。該方向控制裝置 150更具有一設於機座11上方之方向盤15〇1、一設於該 機座11上而受動於方向盤1501旋轉之主動輪1502,及二 分別受動於該主動輪1502而與主動輪1502進行反方向旋 15 轉之第一帶動輪1503與第二帶動輪1504。該第一連動組 151更具有一與第一帶動輪1503固接之前曲柄1511、一 設於該前車輪組12之第一萬向接頭123上的前轉柄 1512，及一樞接於該前曲柄1512與前轉柄間之第一連桿 1513。藉使第一連動組151可受動於該方向控制裝置15〇 20 而連動前車輪組12之右前車輪121進行擺動。 配合圖3所示，該第二連動組丨52更具有一與第二帶 動輪1504固接之後曲柄1521、一設於該後車輪組u之左 後車輪141上的後轉柄1522，及一樞接於該後曲柄1521 與後轉柄1522間之第二連桿1523，藉使第二連動組ι52 6 M240783 可文動於該方向控制裝置15〇而連動該後車輪組14之左 後車輪141進行擺動。 如圖4所示，當本實施例二輪驅動四輪轉向之農機底 盤1組裝於一如割草車車體（圖中未示出該割草車車體； 當然，本實施例亦可組裝於耕耘機、播種機、或農用搬運 車等農機車體），於草地上進行向左轉向時，是向左轉動 該方向控制裝Ϊ 150之方向盤（圖中未示出），此時，該_ 方向盤便會連會主動輪1502同時傳動該第一帶動輪15〇3 與第二帶動輪1504與主動輪1502進行反方向旋轉（如圖鲁 所示，該第一帶動輪1503是朝順時鐘方向旋轉）。當該第 —帶動輪1503旋轉時便會連動該第一連動、組151之前曲 柄1511朝順時鐘方向旋轉，而該前曲柄1511即可依序連 動第一連桿1513、前轉柄1512,及與該前轉柄1512連接 之第一^向接頭123。接續’該第一萬向接頭123便會拉 ^该右前車輪121朝逆時鐘方向旋轉，當該右前車輪121 旋轉時便可藉由前車輪軸125同時連動左前車輪122朝逆 時=方向旋轉，進而使該前車輪組12之右前車輪i2i與# 左刚車輪122達到向左旋轉之目的。 :另—方面，當該主動輪1502朝逆時鐘方向旋轉時， 該第二帶動輪1504會同時朝相反之順時鐘方向旋轉此 1=::連動、组152之後曲柄1521便會受第二帶動輪 連動而朝順時鐘方向旋轉，而依序連動該第二連俨 1523、後轉柄1522,再藉由該後轉柄1522與左後車;^ 相接設’巾可拉引該左後車輪141_時鐘方向旋轉'當 7 4左後車輪141旋轉時，便可藉由後車輪軸]43同時連動 右後車輪142朝順時鐘方向旋轉，進而使該後車輪組14 之j後車輪141與右後車輪142達到向右旋轉之目的。續 5 如别述，當該前車輪組之右前車輪12卜左前車輪122 向左旋轉，而該後車輪組14之左後車輪141、右後車輪 142向右旋轉時’由該動力轉換裝置13傳達到該前車輪組 之動力便會同時驅動該前車輪組12與後車輪組η分別 朝左、右二方向運轉，使得該前車輪組12與後車輪組u 可共同構成一如圖中假想線所示之弧形運行執跡u，並依 1〇 循此運行執跡L1移動，進而使本實施例之二輪驅動四輪 轉向之農機底盤1可連動該割草車車體以極小的轉擎半捏 向左轉彎或進行迴轉。 再如圖5所示，當本實施例二輪驅動四輪轉向之農機 底盤1組裝於一如割草車車體，於草地上進行向右轉向 15 時，是向右轉動該方向控制裝置150之方向盤（圖中未示 出），此時，該方向盤同樣會連會主動輪15〇2同時傳動該 第一帶動輪1503與第二帶動輪1504與主動輪15〇2進行鲁 反方向旋轉（如圖所示，該第一帶動輪15〇3是朝逆時鐘 方向旋轉）。如前所述，當該第一帶動輪15〇3旋轉時同= 20 會連動該第一連動組151之前曲柄1511朝逆時鐘方向旋 轉，而該前曲柄1511即可依序連動第一連桿1513、前轉 柄1512 ’及與該前轉柄1512連接之第一萬向接頭123。 接續’該第一萬向接頭123便會拉引該右前車輪ι21朝順 時鐘方向旋轉，當該右前車輪121旋轉時便可藉由前車_ 8 M240783 軸125同時連動左前車輪122朝順時鐘方向旋轉，進而使 該前車輪組12之右前車輪121與左前車輪122達到向右 旋轉之目的。 另一方面，當該主動輪1502朝順時鐘方向旋轉時， 5 該第二帶動輪1504會同時朝相反之逆時鐘方向旋轉，此 時該第二連動組152之後曲柄1521便會受第二帶動輪 1504之連動而朝逆時鐘方向旋轉，而依序連動該第二連桿 1523、後轉柄I522,再藉由該後轉柄1522與左後車輪141 相接設，而可拉引該左後車輪141朝逆時鐘方向旋轉，當 1〇 該左後車輪141旋轉時，便可藉由後車輪軸143同時連動 右後車輪142朝逆時鐘方向旋轉，進而使該後車輪組14 之左後車輪141與右後車輪142達到向左旋轉之目的。相 同地，當該前車輪組12之右前車輪121、左前車輪122向说明 Description of the new model: [Technical field to which the new model belongs] The new model relates to an agricultural machine chassis, particularly an agricultural machine chassis with two-wheel drive and four-wheel steering. [Previous technology] General mowers, cultivators, seeders, or agricultural trucks and other agricultural machinery bodies, due to the limited use of cultivated land, and need to be mowed, cultivated, planted or harvested while driving As a result, the chassis of a general agricultural vehicle body is designed to run at low speed and power, so its driving methods are mostly two-wheel driving methods of front wheel steering and rear wheel driving. However, when the two-wheel-drive agricultural vehicle body is turning, the entire body is steered by the swing of the two front wheels, while the two rear wheels are only driven by the two front wheels and do not swing at the same time. The turning f radius of the two-wheel drive agricultural vehicle body is relatively large. When actually carrying out agricultural work, the operator will drive the agricultural vehicle body back and forth on the cultivated land, so that the agricultural vehicle body passes through every corner of the cultivated land, and the general cultivated land has a limited width. Leaving a large dead corner of the farming and having to walk through it many times can achieve the purpose of actually traveling through the farmland. Therefore, in practice, the conventional two-wheel-drive agricultural vehicle body has a relatively large turning radius and a long driving distance, which will relatively increase fuel consumption and waste farming costs, extend farming time and reduce operating efficiency; and Due to the large turning radius, it is not convenient in operation. [New content] The new two-wheel drive four-wheel steering agricultural machine chassis includes a base, 4 M240783, a front wheel set located in front of the base, a power conversion device that can indirectly drive the front wheel set, and a rear set The next wheel group and a wheel group linkage unit that can simultaneously link the rigid and rear wheel groups. The wheel group linkage unit has a directional control device, a first linkage group that can be linked by the directional control device, and a second linkage group that can be linked by the directional control device, and can be linked with the rear wheel group. . The new type utilizes the connection relationship of the front-opening members, and the right front wheel of the front wheel group can be controlled to swing by the direction control device, while the left rear wheel of the rear wheel group can be swung in the reverse direction, so that the agricultural vehicle body To achieve the purpose of two-wheel drive and four-wheel steering. The function of the new model is to provide a two-wheel-drive four-wheel-steering agricultural machine chassis. The agricultural machine chassis enables the agricultural vehicle body to carry out agricultural work on cultivated land with a small turning radius, and can reduce fuel consumption to save farming costs and shorten farming time. In order to improve the efficiency of operations, while achieving the convenience of operation and other effects. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Referring to FIG. 1, a preferred embodiment of the novel two-wheel-drive four-wheel-steering agricultural machine chassis 1 includes a base n, a front wheel set 12 provided in front of the base u, and a front wheel set 12 that can indirectly drive the front wheel set 12. Movement 13, a wheel set 14 arranged behind the base U, and a wheel set interlocking unit 15 that can simultaneously link the front and rear wheel sets 12, 14. As shown in FIG. 2, the front wheel group 12 has two right front wheels 121 and two left front wheels 122, which are two points on the front two sides of the base 11, and two first universal wheels that are two points on the 5 M240783 right and left front wheels 121, 122. The joint 123 and the second universal joint 124 and a front wheel axle 125 connected to the first and second universal joints 123 and 124. The power conversion device 13 is disposed on the front wheel axle 5 125 of the front wheel set 12 and can indirectly drive the front wheel axle 125 to rotate, thereby driving the right and left front wheels 121 and 122 to rotate at the same time. The rear wheel set 14 has a left rear wheel 141 and a right rear wheel 142, which are bisected on the two sides behind the base n, and a rear axle 143 connecting the left and right rear wheels 141 and 142. 10 The wheel group linkage unit 15 has a directional control device 15, a first linkage group 151, and a second linkage group 152. The steering control device 150 further has a steering wheel 1501 located above the base 11, a driving wheel 1502 provided on the base 11 and driven by the steering wheel 1501 to rotate, and two driven wheels 1502 and The driving wheel 1502 performs a first driving wheel 1503 and a second driving wheel 1504 which are rotated 15 times in opposite directions. The first linkage group 151 further has a front crank 1511 fixedly connected to the first driving wheel 1503, a front handle 1512 provided on the first universal joint 123 of the front wheel group 12, and a pivot connected to the front. A first link 1513 between the crank 1512 and the front handle. If the first linkage group 151 can be actuated by the direction control device 1520, the right front wheel 121 of the front wheel group 12 can be swung. As shown in FIG. 3, the second linkage group 52 also has a crank 1521 after being fixedly connected with the second driving wheel 1504, a rear handle 1522 provided on the left rear wheel 141 of the rear wheel group u, and a A second link 1523 pivotally connected between the rear crank 1521 and the rear handle 1522, so that the second linkage group 52 6 M240783 can be moved to the direction control device 15 to link the left rear wheel of the rear wheel group 14 141 swings. As shown in FIG. 4, when the two-wheel-drive four-wheel-steering agricultural machine chassis 1 of this embodiment is assembled on the body of a lawnmower vehicle (the lawnmower vehicle body is not shown in the figure; of course, this embodiment can also be assembled on When turning to the left on a grass field, the steering wheel (not shown in the figure) of the control device 150 is turned to the left when turning left on the grass. At this time, the _ The steering wheel will drive the first driving wheel 1502 and the second driving wheel 1504 and the driving wheel 1502 to rotate in the opposite direction at the same time with the driving wheel 1502 (as shown in Figure Lu, the first driving wheel 1503 is clockwise) Direction rotation). When the first driving wheel 1503 rotates, the first linkage, the front crank 1511 of the group 151 rotates in the clockwise direction, and the front crank 1511 can sequentially link the first link 1513, the front handle 1512, and A first directional connector 123 connected to the front rotating handle 1512. Continued 'The first universal joint 123 will pull the right front wheel 121 to rotate in the counterclockwise direction. When the right front wheel 121 rotates, the left front wheel 122 can be simultaneously rotated in the counterclockwise direction through the front wheel axle 125. Further, the right front wheels i2i and the #left rigid wheels 122 of the front wheel group 12 are rotated to the left. : In another aspect, when the driving wheel 1502 rotates in the counterclockwise direction, the second driving wheel 1504 will also rotate in the opposite clockwise direction at the same time. 1 = :: Linkage, the group 152 and the crank 1521 will be driven by the second The wheels rotate in a clockwise direction, and the second flail 1523, the rear turning handle 1522 are sequentially linked, and then the rear turning handle 1522 is connected to the left rear car; ^ is connected to the left side of the car to draw the left rear Wheel 141_clockwise rotation 'When 7 4 left rear wheel 141 rotates, the right rear wheel 142 can be simultaneously rotated in the clockwise direction through the rear wheel axle] 43, so that the rear wheel group 141 of the rear wheel 141 And the right rear wheel 142 achieves the purpose of rotating to the right. Continued 5 As stated, when the right front wheel 12 of the front wheel group and the left front wheel 122 rotate to the left, and the left rear wheel 141 and the right rear wheel 142 of the rear wheel group 14 rotate to the right, the power conversion device 13 The power transmitted to the front wheel group will simultaneously drive the front wheel group 12 and the rear wheel group η to move in the left and right directions, respectively, so that the front wheel group 12 and the rear wheel group u can jointly constitute an imaginary as shown in the figure. The arc-shaped running track u shown by the line moves in accordance with the running track L1 according to 10, so that the two-wheel drive four-wheel steering agricultural machine chassis 1 of this embodiment can interlock the mowing car body with a minimum rotation Press halfway to turn left or turn. As shown in FIG. 5 again, when the two-wheel-drive four-wheel-steering agricultural machine chassis 1 of this embodiment is assembled on the body of a lawn mower and turns 15 on the grass to the right, the direction control device 150 is turned to the right. The steering wheel (not shown in the figure), at this time, the steering wheel will also drive the first driving wheel 1503 and the second driving wheel 1504 and the driving wheel 1502 to rotate in the opposite direction at the same time. As shown in the figure, the first driving wheel 1503 is rotated in the counterclockwise direction). As mentioned before, when the first driving wheel 1503 rotates, the same = 20 will interlock the first crank 1511 of the first linkage group 151 to rotate counterclockwise, and the front crank 1511 can sequentially link the first link 1513. A front handle 1512 'and a first universal joint 123 connected to the front handle 1512. Continue 'The first universal joint 123 will pull the right front wheel ι21 to rotate clockwise. When the right front wheel 121 rotates, you can use the front car _ 8 M240783 shaft 125 to simultaneously link the left front wheel 122 to clockwise By rotating, the right front wheel 121 and the left front wheel 122 of the front wheel group 12 can be rotated to the right. On the other hand, when the driving wheel 1502 rotates in the clockwise direction, 5 the second driving wheel 1504 will rotate in the opposite counterclockwise direction at the same time, at this time, the crank 1521 after the second linkage group 152 will be driven by the second The wheels 1504 are linked to rotate counterclockwise, and the second link 1523 and the rear handle I522 are sequentially connected, and the rear handle 1522 is connected to the left rear wheel 141 to pull the left. The rear wheel 141 rotates in the counterclockwise direction. When the left rear wheel 141 rotates, the right rear wheel 142 can be rotated in the counterclockwise direction through the rear wheel axle 143 at the same time, thereby making the rear left of the rear wheel group 14 The wheels 141 and the right rear wheels 142 achieve the purpose of rotating to the left. Similarly, when the right front wheel 121 and the left front wheel 122 of the front wheel group 12
右旋轉，而該後車輪組14之左後車輪14卜右後車輪HZ 15 向左旋轉時，由該動力轉換裝置13傳達到該前車輪組12 之動力便會同時驅動該前車輪組12與後車輪組14分別朝 右、左二方向運轉，使得該前車輪組12與後車輪組14可 共同構成一如圖中假想線所示之弧形運行執跡L2，並依循 此運仃軌跡L2移動，進而使本實施例之二輪驅動四輪轉 2〇 肖之農機底盤1可連動該割草車車體以極小的轉f半徑向 右轉聲或進行迴轉。因此，本實施例二輪驅動四輪轉向二 t機底盤1在實際操作上，㈣能達到便捷、高效率之使 用目的，順暢地完成如割草、耕耗、播種，或農用搬 各項農事作業。 9 m述’本新型二輪驅動四輪轉向之農機底盤i利 則揭構件之聯結關係，當組裝於―農機車體而進行轉向 知作即可藉由該方向控制裝置15〇控制前車輪组12 5 之右則車輪121擺動，同時使該後車輪組14之左後車輪 141進行反向之職，而使農機車體達㈣二輪驅動四輪 轉向之目的。因此，本新型在實際使用上，可使各種農機 車，以較小之轉f半徑於耕地進行農事作業，而能降低耗 油量以節省農作成本、縮短農作時間以提升作業效率，同 時達到操作便利等功效，故確實能達到創作之目的。 1〇 惟以上所述者，僅為說明本新型之較佳實施例而已， 當不能以此限定本新型實施之範圍，即大凡依本新型申請 專利範圍及新型說明書内容所作之簡單的等效變化與修 飾’皆應仍屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 15 圖1是本新型二輪驅動四輪轉向之農機底盤一較佳實 施例之俯視圖，說明該車輪組連動單元之構造； 圖2是該較佳實施例之前視圖，說明該前車輪組之構 造； 圖3是該較佳實施例之後視圖，說明該後車輪組之構 20 造； 圖4是該較佳實施例朝左轉向之作動示意圖；及 圖5是該較佳實施例朝右轉向之作動示意圖。 10 M240783 【圖式之主要元件代表符號說明】 1 二輪驅動四輪轉向之 150 方向控制裝置 農機底盤 151 第一連動組 11 機座 152 第二連動組 12 前車輪組 1501 方向盤 13 動力轉換裝置 1502 主動輪 14 後車輪組 1503 第一帶動輪 15 車輪組連動單元 1504 第二帶動輪 121 右前車輪 1511 前曲柄 122 左前車輪 1512 前轉柄 123 第一萬向接頭 1513 第一連桿 124 第二萬向接頭 1521 後曲柄 125 前車輪軸 1522 1523 後轉柄 第二連桿 141 左後車輪 142 右後車輪 143 後車輪軸 11When the right wheel is rotated and the left rear wheel 14 and the right rear wheel HZ 15 of the rear wheel group 14 are rotated to the left, the power transmitted from the power conversion device 13 to the front wheel group 12 will simultaneously drive the front wheel group 12 and The rear wheel group 14 runs in the right and left directions respectively, so that the front wheel group 12 and the rear wheel group 14 can jointly form an arc-shaped running track L2 as shown by the imaginary line in the figure, and follow this running track L2 By moving, the two-wheel-drive, four-wheel-drive 20-inch agricultural machine chassis 1 of this embodiment can interlock the lawnmower body with a small turning radius to the right or turn. Therefore, in this embodiment, the two-wheel-drive four-wheel-steering two-t chassis of the machine 1 can achieve convenient and efficient use in practice, and can smoothly complete various agricultural operations such as mowing, cultivating, sowing, or agricultural use. . 9 m described 'The new two-wheel-drive four-wheel steering agricultural machinery chassis i Lizie exposes the connection relationship between the components, when assembled in the _ agricultural machinery body and steering known, you can control the front wheel set by this direction control device 15 5 To the right, the wheel 121 swings, and at the same time, the left rear wheel 141 of the rear wheel group 14 performs the reverse function, so that the agricultural vehicle body can achieve the purpose of two-wheel drive and four-wheel steering. Therefore, in practical use, the new model can enable various agricultural locomotives to perform agricultural operations on cultivated land with a small turning radius, and can reduce fuel consumption to save agricultural costs, shorten agricultural time, and improve operating efficiency. Convenient operation and other effects, so it can indeed achieve the purpose of creation. 10 However, the above is only to explain the preferred embodiment of the new model. When the scope of the implementation of the new model cannot be limited by this, that is, the simple equivalent changes made according to the scope of the patent application of the new model and the content of the new specification And modification 'should still fall within the scope of this new patent. [Brief description of the drawings] 15 FIG. 1 is a top view of a preferred embodiment of the new two-wheel drive four-wheel steering agricultural machine chassis, illustrating the structure of the wheel unit linkage unit; FIG. 2 is a front view of the preferred embodiment, illustrating the The structure of the front wheel set; Figure 3 is a rear view of the preferred embodiment, illustrating the structure of the rear wheel set 20; Figure 4 is a schematic diagram of the operation of the preferred embodiment turning to the left; and Figure 5 is the preferred embodiment The schematic diagram of the embodiment turning to the right. 10 M240783 [Description of the main components of the diagram] 1 Two-wheel drive four-wheel steering 150 Steering control device Agricultural machine chassis 151 First linkage group 11 Base 152 Second linkage group 12 Front wheel group 1501 Steering wheel 13 Power conversion device 1502 Active Wheel 14 Rear wheel set 1503 First driving wheel 15 Wheel set interlocking unit 1504 Second driving wheel 121 Right front wheel 1511 Front crank 122 Left front wheel 1512 Front swivel 123 First universal joint 1513 First link 124 Second universal joint 1521 Rear crank 125 Front wheel axle 1522 1523 Rear crank second link 141 Left rear wheel 142 Right rear wheel 143 Rear wheel axle 11