JPH0618822Y2 - Four-wheel drive work vehicle - Google Patents

Description

【考案の詳細な説明】 （イ）産業上の利用分野 この考案は、耕うん作業機等の各種駆動作業機を装備し
て作業する常時体勢と、荷台を装備して作業する運搬体
勢とに仕様変更できる作業車輌に関するものである。[Detailed description of the device] (b) Industrial field of application This device has two specifications: one is always equipped with various driving machines such as tilling machines, and the other is a carrier body equipped with a loading platform. It relates to a work vehicle that can be changed.

（ロ）従来の技術 耕うん作業機等を装備して作業する体勢と、荷台を装備
して運搬作業する体勢とに仕様変更できるように構成さ
れた作業車輌は、例えば実公昭４８−１０３４９号公報
などで既に知られるところであるが、従来のものは前輪
が非駆動の操向輪になり後輪のみが駆動される二輪駆動
型で、しかもアーティキュレイト型（胴体屈折型）には
なっていないものであった。(B) Conventional Technology A working vehicle configured so that the specifications can be changed between a posture for working with a tillage implement and the like and a posture for carrying work with a loading platform is disclosed, for example, in Japanese Utility Model Publication No. 48-10349. Although it is already known as such, the conventional one is a two-wheel drive type in which the front wheels are non-driven steering wheels and only the rear wheels are driven, and not the articulate type (body refraction type). It was a thing.

（ハ）考案が解決しようとする問題点 従来の作業車輌は、上記のような構成になっているの
で、耕うん作業体勢と運搬作業体勢との仕様変更は可能
であるけれども、運搬作業体勢の場合にはホイールベー
スが長じられるだけでなく車輌全体の前後方向の重量配
分が極端に後方に偏ることとなるので車体前部が立ち上
がり気味になって走行性と操向性がともに悪くなり、ま
た回行半径が著しく増大して小回りがきかなくなるとい
った難点があり、さらに二輪駆動型であるので運搬作業
体勢、耕うん作業体勢のいずれの場合にも強力な牽引力
は望めないといった難点があった。(C) Problems to be solved by the invention Since the conventional work vehicle has the above-described configuration, the specifications of the tilling work posture and the transport work posture can be changed, but in the case of the transport work posture Not only is the wheelbase lengthened, but the weight distribution in the front-rear direction of the entire vehicle is extremely biased rearward, so the front part of the vehicle body tends to rise, which deteriorates both drivability and steerability. There is a problem that the turning radius is significantly increased and a tight turn is not possible. Furthermore, since it is a two-wheel drive type, there is a problem that a strong traction force cannot be expected in any of a transporting work posture and a tilling work posture.

本考案は、上記難点の解消を目的として実施したもの
で、耕うん、運搬のいずれの作業体勢の場合にも強力な
牽引力でもって走行し、優れた操向性を発揮するように
改良した作業車輌を提供するものである。The present invention was carried out for the purpose of solving the above-mentioned difficulties, and a working vehicle improved so as to exhibit excellent steerability by traveling with a strong traction force in any of the working postures of plowing and transportation. Is provided.

（ニ）問題点を解決するための手段 すなわち、本考案は、前車体(A)と後車体(B)を縦方向の
屈折中心(P)で水平方向に屈折する関節部(C)によって連
結し、該関節部(C)を前車体(A)側に装設された搭乗運転
部(1)のステアリング機構(2)で屈折作動できるように連
動させ、前車体(A)側の前輪駆動ミッション(3)から後延
する伝動軸(4)を前記屈折中心(P)と同心で屈折する伝動
接手(5)を介して後車体(B)側の後輪駆動ミッション(6)
に連動連結し、前記関節部(C)の屈折中心(P)から後方に
外れた部位には関節部(C)と伝動軸(2)の全体長を変える
変更部を設け、この変更部の調節により後車体(A)を運
搬作業体勢位置に移動できるようにしてあることを特徴
とする四輪駆動型作業車輌にして提供するものである。(D) Means for Solving Problems That is, the present invention connects the front vehicle body (A) and the rear vehicle body (B) by the joint portion (C) that bends horizontally at the center of refraction (P) in the vertical direction. Then, the joint section (C) is interlocked with the steering mechanism (2) of the boarding operation section (1) mounted on the front vehicle body (A) side so that the joint mechanism (C) can be flexibly operated, and the front wheel drive on the front vehicle body (A) side. The rear wheel drive mission (6) on the rear vehicle body (B) side via the transmission joint (5) that bends the transmission shaft (4) extending backward from the mission (3) concentrically with the refraction center (P).
The joint part (C) and the transmission shaft (2) are provided with a change part for changing the entire length of the joint part (C) and the transmission shaft (2) at a position deviated rearward from the center of refraction (P) of the joint part (C). The present invention provides a four-wheel drive type working vehicle, characterized in that the rear vehicle body (A) can be moved to a carrying work posture position by adjustment.

（ホ）作用 本考案による作業車輌にあっては、関節部(C)と伝動軸
(4)の全体長を変える変更部を調節する比較的簡単な所
作によって、通常ホイルベースの耕うん作業体勢と、耕
うん作業体勢より長いホイルベースの運搬作業体勢の二
仕様の作業車輌にすることができるので製作手数、コス
ト面が有利になる。そして、何れの作業体勢にした場合
にも車輌は四輪駆動型で且つ胴体屈折により操向される
ものとなるので走行性、操向性に優れたものとなり、殊
に運搬作業体勢の場合、重量バランスが極端に後方に偏
る状態になる度合いが小さくなって走行性がよく安全性
の高い運搬作業が行えるのである。(E) Action In the work vehicle according to the present invention, the joint (C) and the transmission shaft are
By using a relatively simple operation to adjust the change part that changes the overall length of (4), it is possible to make a working vehicle with two specifications, a normal wheel-based tilling work posture and a wheel-based transporting work posture longer than the tilling work posture. It is advantageous in terms of manufacturing labor and cost. And in any working posture, the vehicle is a four-wheel drive type and is steered by refraction of the body, so that the running performance and steering ability are excellent, especially in the case of a transporting working posture, The degree of weight balance being extremely biased to the rear is reduced, and transporting work with good traveling performance and high safety can be performed.

（ヘ）実施例 以下、本考案の実施例を図面によって説明する。(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

第１図は耕うん作業体勢における本考案作業車輌の全体
側面図、第２図は同じく全体平面図、第３図は第１図の
要部を拡大して示した断面側面図、第４図は運搬作業体
勢における本考案作業車輌の全体側面図、第５図はその
要部を拡大して示した断面側面図である。FIG. 1 is an overall side view of the work vehicle of the present invention in a tilling work position, FIG. 2 is an overall plan view of the same, FIG. 3 is a cross-sectional side view showing an enlarged main part of FIG. 1, and FIG. FIG. 5 is an overall side view of the work vehicle of the present invention in a transporting work posture, and FIG. 5 is a cross-sectional side view showing an enlarged main part thereof.

作業車輌の車体は、前後に分割形成された前車体(A)と
後車体(B)を、両者の間に介装する関節部(C)によって互
いに水平方向に屈折するように連結して構成される。The vehicle body of the work vehicle is configured by connecting a front vehicle body (A) and a rear vehicle body (B), which are divided into front and rear, so as to be bent in a horizontal direction by a joint portion (C) interposed between the two. To be done.

前車体(A)は耕うん作業体勢、運搬作業体勢の何れの場
合にも同じ構成になるもので、搭載エンジン(7)の出力
部にクラッチハウジング(8)を介して直結される前輪駆
動ミッション(3)の下部から左右に突出する駆動前車軸
(9)(9)に前車輪(10)(10)を嵌着し、さらに前輪駆動ミッ
ション(3)の後側斜め上方部位に搭乗運転部(1)を配設し
て構成され、搭乗運転部(1)はステアリング機構(2)とそ
れに対設される座席(11)とから構成されている。The front vehicle body (A) has the same configuration in both the tilling work posture and the transporting work posture, and the front wheel drive mission (directly connected to the output part of the mounted engine (7) via the clutch housing (8) ( Drive front axle protruding left and right from the bottom of 3)
(9) The front wheels (10) and (10) are fitted to (9), and the boarding operation unit (1) is arranged in the diagonally upper rear part of the front wheel drive mission (3). The part (1) is composed of a steering mechanism (2) and a seat (11) opposite to the steering mechanism (2).

後車体(B)は耕うん作業体勢（常時体勢）の場合と運搬
作業体勢の場合ではやや構成が異なり、耕うん作業体勢
の場合には第1,2図と第３図にみられるような構成にな
る。つまり、枠体(12)に後輪駆動ミッション(6)と、Ｐ
ＴＯケース(13)や作業機装着部(14)や油圧シリンダ(15)
などを配設し、前記後輪駆動ミッション(6)の下部から
左右に突出する駆動後車軸(16)(16)には後車輪(17)(17)
を嵌着するとともに、作業機装着部(14)には耕うん作業
機(18)を着脱自在に装して、その入力部を前記ＰＴＯケ
ース(13)に連動連結し、且つ作業機(18)を昇降調節する
ために作業機(18)と油圧シリンダ(15)を連結できるよう
に構成されている。The rear vehicle body (B) has a slightly different configuration between the tilling work posture (constant posture) and the transporting work posture, and in the case of the tilling work posture, the configuration shown in Figs. 1, 2 and 3 is used. Become. That is, the rear wheel drive mission (6) and P
TO case (13), work equipment mounting part (14), hydraulic cylinder (15)
Rear wheels (17) (17) are mounted on the drive rear axles (16) (16) that are arranged from the lower part of the rear wheel drive mission (6) to the left and right.
And the work implement mounting portion (14) is detachably equipped with a tilling work implement (18), the input portion of which is interlockingly connected to the PTO case (13), and the work implement (18) The working machine (18) and the hydraulic cylinder (15) can be connected to adjust the vertical movement of the work machine (18).

また、運搬作業体勢の場合には第４図と第５図にみられ
るような構成になる。つまり、枠体(12)の一部を少し組
み替えることによって荷台装着部(19)を具備させ、その
荷台装着部(19)に荷台(20)を傾動可能に取付け、前述の
油圧シリンダ(15)を作業機装着部(14)と荷台(20)間に付
替装着することによって荷台(20)をダンプ作動させ得る
ように構成されるのである。Further, in the case of the transporting work posture, the configuration is as shown in FIGS. 4 and 5. That is, a part of the frame body (12) is slightly rearranged to provide the loading platform mounting portion (19), and the loading platform (20) is tiltably attached to the loading platform mounting portion (19), and the aforementioned hydraulic cylinder (15) is attached. It is configured so that the loading platform (20) can be dump-operated by replacing and mounting between the working machine mounting portion (14) and the loading platform (20).

なお、運搬作業体勢の場合、ＰＴＯケース(13)は取り外
してもよく、その儘にして活用できるようにしてもよい
のであり、さらに、荷台(20)をダンプ作動させる油圧シ
リンダには作業機昇降用とは別のものを用いてもよい
し、また、荷台(20)をダンプ作動しない構造で設ける場
合には油圧シリンダ(15)を用いないでもよいものであ
る。In the case of a transportation work posture, the PTO case (13) may be removed and may be used as it is. Further, the hydraulic cylinder for dumping the loading platform (20) may be lifted by the working machine. Other than the above, a hydraulic cylinder (15) may not be used when the loading platform (20) is provided with a structure that does not perform a dumping operation.

関節部(C)は、前部連結体(21)と後部連結体(22)の重合
部を縦方向軸心のキングピン(23)で水平方向に回動自在
に連結し、両連結体(21)(22)が前記キングピン(23)の軸
心を屈折中心(P)として互いに屈折するようにして構成
される。The joint part (C) connects the overlapping part of the front connecting body (21) and the rear connecting body (22) by a kingpin (23) having a longitudinal axis so as to be rotatable in the horizontal direction. ) (22) are configured to be bent with each other with the axis of the kingpin (23) as the center of refraction (P).

そして、前部連結体(21)の前端部を前車体(A)の前輪駆
動ミッション(3)の後背部に固着し、後部連結体(22)の
後端部を後車体(B)の前部に固定することによって前車
体(A)と後車体(B)を連結し、前記ステアリング機構(2)
のピットマンアーム(24)に連動する連結具を後部連結体
(22)に結合して、ステアリング機構(2)の操作により前
車体(A)と後車体(B)とが互いに屈折するように構成され
る。Then, the front end portion of the front coupling body (21) is fixed to the rear portion of the front wheel drive mission (3) of the front vehicle body (A), and the rear end portion of the rear coupling body (22) is located in front of the rear vehicle body (B). The front vehicle body (A) and the rear vehicle body (B) are connected to each other by fixing them to the steering section (2).
A connecting tool that interlocks with the pitman arm (24) of the rear
The front vehicle body (A) and the rear vehicle body (B) are coupled to each other (22) so that the front vehicle body (A) and the rear vehicle body (B) are bent by operation of the steering mechanism (2).

また、前車体(A)の前輪駆動ミッション(3)からは二本の
伝動軸(4)(4)が後方に突設され、それらの伝動軸(4)(4)
が関節部(C)に内包される状態で後方に延出されて、前
記屈折中心(P)と同心で屈折する伝動接手(5)(5)を中途
部に介装しながら更に後方に延出される。そして、一方
の伝動軸(4)の後端部にはＰＴＯケース(13)の入力軸(2
5)に結合するクラッチ継手(26)が設けられ、また、他方
の伝動軸(4)の後端部には後輪駆動ミッション(6)の入力
部に連結するためのクラッチ継手(27)が設けられてい
る。In addition, two transmission shafts (4) (4) are projected rearward from the front wheel drive mission (3) of the front vehicle body (A), and these transmission shafts (4) (4)
Is extended in the state of being enclosed in the joint part (C), and further extends rearward while interposing transmission joints (5) and (5) that are concentric with the refraction center (P) in the middle part. Will be issued. Then, at the rear end of one of the transmission shafts (4), the input shaft (2
A clutch joint (26) to be coupled to 5) is provided, and a clutch joint (27) for connecting to the input portion of the rear wheel drive mission (6) is provided at the rear end of the other transmission shaft (4). It is provided.

なお、関節部(C)の後部連結体(22)は、関節部(C)全体の
前後長さと、伝動軸(4)全体の前後長さを変えることが
できるようにするために変更部が備えられた構造になっ
ている。つまり、後部連結体(22)の後端面はフランジ継
手(28)になっていて、耕うん作業体勢（常時体勢）の場
合には、そのフランジ継手(28)を後車体(B)に直接結合
するとともに、伝動軸(4)(4)のクラッチ継手(26)(27)を
入力軸(25)と後輪駆動ミッション(6)の入力部に直接結
合し、また、運搬作業体勢の場合には、フランジ継手(2
8)と後車体(B)との間に延長体(29)を介装するととも
に、伝動軸(4)と後輪駆動ミッション(6)の入力部との間
は、延長軸(30)を介装して連動連結するようになってい
るのである。The rear connecting body (22) of the joint part (C) has a change part so that the front-rear length of the whole joint part (C) and the front-rear length of the entire transmission shaft (4) can be changed. It has a built-in structure. That is, the rear end face of the rear connecting body (22) is a flange joint (28), and in the case of a tilling work posture (always posture), the flange joint (28) is directly connected to the rear vehicle body (B). At the same time, directly connect the clutch joints (26) (27) of the transmission shafts (4) (4) to the input shaft (25) and the input part of the rear wheel drive mission (6), and in the case of a transport work posture, , Flange fittings (2
The extension body (29) is installed between the rear body (B) and the rear body (B), and the extension shaft (30) is installed between the transmission shaft (4) and the input part of the rear wheel drive mission (6). It is designed to interlock and interlock.

実施例の作業車輌が耕うん作業体勢になっている場合に
は、第１図と第２図と第３図に示している短いホイール
ベース状態になり、後車体(B)の作業機装着部(14)に作
業機(18)を装着してＰＴＯケース(13)の動力により駆動
できるようにするとともに、油圧シリンダ(15)で作業機
(18)を昇降調節できるようになっている。When the working vehicle of the embodiment is in the tilling work posture, the short wheelbase state shown in FIGS. 1, 2, and 3 is established, and the working machine mounting portion (of the rear vehicle body (B) ( The work machine (18) is attached to the (14) so that it can be driven by the power of the PTO case (13), and the work machine can be driven by the hydraulic cylinder (15).
(18) can be adjusted up and down.

しかして、エンジン(7)の動力が前輪駆動ミッション(3)
に伝えられると、その前輪駆動ミッション(3)によって
前車輪(10)(10)が駆動されるとともに、伝動軸(4)(4)を
経て後輪駆動ミッション(6)とＰＴＯケース(13)にも伝
動されて後車輪(17)(17)と作業機(18)が駆動され、車輌
全体は四輪駆動状態で進行しながら作業機(18)によって
耕うん作業することができるのであり、車輌の進行中に
操向が必要な場合には、搭乗運転部(1)に居るオペレー
タがステアリング機構(2)を右又は左に適宜回動操作す
れば、前車体(A)と後車体(B)が関節部(C)の屈折中心(P)
を中心にして互いに水平方向に屈折することとなって、
前車輪(10)(10)と後車輪(17)(17)に前記の屈折量に応じ
た操向角ができて車輌の進路変更や回行が図れるのであ
る。Then, the power of the engine (7) is driven by the front-wheel drive mission (3).
The front wheel drive mission (3) drives the front wheels (10) (10) and the rear wheel drive mission (6) and PTO case (13) via the transmission shafts (4) (4). Is also transmitted to the rear wheels (17) (17) and the working machine (18), the entire vehicle can be cultivated by the working machine (18) while traveling in the four-wheel drive state. If steering is required while the vehicle is in progress, the operator in the boarding operation unit (1) can turn the steering mechanism (2) to the right or left as appropriate, and the front vehicle body (A) and the rear vehicle body (B) can be rotated. ) Is the center of refraction (P) of the joint (C)
Will be refracted horizontally with respect to each other,
The front wheels (10) (10) and the rear wheels (17) (17) can be steered according to the refraction amount to change the course of the vehicle or turn around.

また、車輌が運搬作業体勢になされている場合には、第
４図と第５図に図示されるような長いホイルベース状態
になり、後車体(B)には荷台(20)がダンプ作動可能に装
され、その荷台(20)に荷物を積み込んで運搬することが
できるようになっている。そして、この運搬作業体勢の
ときにも前車輪(10)(10)と後車輪(17)(17)は耕うん作業
体勢のときと同様に四輪駆動されて進行させることとな
り、車体の操向も前車体(A)と後車体(B)が屈折中心(P)
で屈折することによって行われることとなるのである。Also, when the vehicle is in the transportation work posture, the long wheel base state as shown in FIGS. 4 and 5 is set, and the loading platform (20) can be dumped to the rear vehicle body (B). It is mounted so that the luggage (20) can be loaded and transported. Even in this transporting work posture, the front wheels (10) (10) and the rear wheels (17) (17) are driven by four wheels in the same manner as in the cultivating work posture, and the vehicle is steered. Also the front body (A) and the rear body (B) are the centers of refraction (P)
It is done by refracting at.

（ト）考案の効果 以上に説明したように本考案では、前車体(A)と後車体
(B)を縦方向の屈折中心(P)で水平方向に屈折する関節部
(C)によって連結し、該関節部(C)を前車体(A)側に装設
された搭乗運転部(1)のステアリング機構(2)で屈折作動
できるように連動させ、前車体(A)側の前輪駆動ミッシ
ョン(3)から後延する伝動軸(4)を前記屈折中心(P)と同
心で屈折する伝動接手(5)を介して後車体(B)側の後輪駆
動ミッション(6)に連動連結し、前記関節部(C)の屈折中
心(P)から後方に外れた部位には関節部(C)と伝動軸(4)
の全体長さを変える変更部を設け、この変更部の調節に
より後車体(B)を運搬作業体勢位置に移動できるように
した四輪駆動型作業車輌にしているので、つぎのような
利点がある。(G) Effect of the invention As described above, in the present invention, the front vehicle body (A) and the rear vehicle body are
A joint part that bends (B) horizontally at the vertical center of refraction (P)
(C), and the joint section (C) is interlocked so that the steering mechanism (2) of the boarding operation section (1) mounted on the front vehicle body (A) side can be flexibly operated. ) Side front wheel drive mission (3) rearward drive shaft (4) rear wheel drive side (B) side rear wheel drive mission (5) concentric with the refraction center (P) via a transmission joint (5). 6) interlockingly connected, the joint part (C) and the transmission shaft (4) at the part deviated rearward from the center of refraction (P) of the joint part (C).
Since a four-wheel drive type working vehicle is provided in which a changing portion for changing the entire length of the vehicle is provided and the rear body (B) can be moved to the transporting work posture position by adjusting the changing portion, the following advantages are provided. is there.

．耕うん作業体勢と運搬作業体勢に仕様変更できる作
業車輌でありながら、何れの作業体勢の場合にも四輪駆
動で推進され且つ車体が中間部で屈折して操向されるの
で、強力な牽引力が発揮されるとともに操向性が向上す
る。． Although it is a work vehicle whose specifications can be changed to a tilling work posture and a transport work posture, in any work posture, it is propelled by four-wheel drive and the car body is bent and steered in the middle part, so a strong traction force is provided. It is demonstrated and the steerability is improved.

．前後車体(A)(B)の間に装設する関節部(C)と伝動軸
(4)の長さを変更するだけで他の部分の殆どを共用して
耕うん作業仕様と運搬作業仕様の二仕様の車輌を得られ
るので、コストが著しく低減されて仕様変更も容易であ
る。． Joint (C) and transmission shaft installed between front and rear bodies (A) and (B)
By simply changing the length of (4), most of the other parts can be shared and a vehicle with two specifications of tilling work specification and transportation work specification can be obtained, so the cost is significantly reduced and specification changes are easy.

．前車体(A)側に前輪駆動ミッション(3)などの駆動系
と搭乗運転部(1)と関節部(C)の屈折部分が常設されるの
で、後車体(B)を運搬作業体勢位置に移行してそれに荷
台を取付けて作業する場合にも車輌全体として前後バラ
ンスが極端に後方に偏ることがなくなって走行の安全性
が向上する。． Since the drive system such as the front wheel drive mission (3) and the bending section of the boarding operation section (1) and the joint section (C) are permanently installed on the front vehicle body (A) side, the rear vehicle body (B) is set to the transport work posture position. Even when the vehicle is transferred and a luggage carrier is attached to it, the front-rear balance of the vehicle as a whole is prevented from being extremely biased to the rear, and traveling safety is improved.

また、運搬作業体勢の場合にはホイルベースが長くなる
けれども車体操向の時には前後方向中間の関節部(C)で
胴体屈折して転向するので、従来のものに比すと回行半
径が小さくなり回行性が著しく良好になる。In addition, the wheel base becomes long in the case of the transport work posture, but when steering the car body, it bends and turns at the joint part (C) in the front-rear direction, so the turning radius becomes smaller than the conventional one. Circularity is significantly improved.

【図面の簡単な説明】[Brief description of drawings]

第１図は耕うん作業体勢における本考案作業車輌の全体
側面図、第２図は同じく全体平面図、第３図は第１図の
要部を拡大して示した断面側面図、第４図は運搬作業体
勢における本考案作業車輌の全体側面図、第５図はその
要部を拡大して示した断面側面図である。 (A)……前車体、(B)……後車体 (C)……関節部、(P)……屈折中心 (1)……搭乗運転部、(2)……ステアリング機構 (3)……前輪駆動ミッション、(4)……伝動軸 (5)……伝動接手、(6)……後輪駆動ミッションFIG. 1 is an overall side view of the work vehicle of the present invention in a tilling work position, FIG. 2 is an overall plan view of the same, FIG. 3 is a cross-sectional side view showing an enlarged main part of FIG. 1, and FIG. FIG. 5 is an overall side view of the work vehicle of the present invention in a transporting work posture, and FIG. 5 is a cross-sectional side view showing an enlarged main part thereof. (A) …… Front car, (B) …… Rear car (C) …… Joint part, (P) …… Refraction center (1) …… Boarding operation part, (2) …… Steering mechanism (3)… … Front wheel drive mission, (4) …… Transmission shaft (5) …… Transmission joint, (6) …… Rear wheel drive mission

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】前車体(A)と後車体(B)を縦方向の屈折中心
(P)で水平方向に屈折する関節部(C)によって連結し、該
関節部(C)を前車体(A)側に装設された搭乗運転部(1)の
ステアリング機構(2)で屈折作動できるように連動さ
せ、前車体(A)側の前輪駆動ミッション(3)から後延する
伝動軸(4)を前記屈折中心(P)と同心で屈折する伝動接手
(5)を介して後車体(B)側の後輪駆動ミッション(6)に連
動連結し、前記関節部(C)の屈折中心(P)から後方に外れ
た部位には関節部(C)と伝動軸(4)の全体長を変える変更
部を設け、この変更部の調節により後車体(B)を運搬作
業体勢位置に移動できるようにしてあることを特徴とす
る四輪駆動型作業車輌。1. A front vehicle body (A) and a rear vehicle body (B) are provided with vertical refraction centers.
(P) is connected by a joint part (C) that bends in the horizontal direction, and the joint part (C) is bent by the steering mechanism (2) of the boarding operation part (1) mounted on the front vehicle body (A) side. A transmission joint that is operatively linked and refracts the transmission shaft (4) extending backward from the front wheel drive mission (3) on the front vehicle body (A) side concentrically with the refraction center (P).
The rear wheel drive mission (6) on the rear vehicle body (B) side is interlockingly connected via (5), and the joint portion (C) is located at a portion deviated rearward from the refraction center (P) of the joint portion (C). And a change portion for changing the entire length of the transmission shaft (4), and by adjusting the change portion, the rear vehicle body (B) can be moved to the transport work posture position. .