JP2019059471A - Mobile vehicle - Google Patents

Mobile vehicle Download PDF

Info

Publication number
JP2019059471A
JP2019059471A JP2018218723A JP2018218723A JP2019059471A JP 2019059471 A JP2019059471 A JP 2019059471A JP 2018218723 A JP2018218723 A JP 2018218723A JP 2018218723 A JP2018218723 A JP 2018218723A JP 2019059471 A JP2019059471 A JP 2019059471A
Authority
JP
Japan
Prior art keywords
steering
cylinder
steering cylinder
angle sensor
wheels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2018218723A
Other languages
Japanese (ja)
Inventor
永井 真人
Masato Nagai
真人 永井
上島 徳弘
Norihiro Uejima
徳弘 上島
二宮 浩二
Koji Ninomiya
浩二 二宮
宮内 康弘
Yasuhiro Miyauchi
康弘 宮内
赤松 克利
Katsutoshi Akamatsu
克利 赤松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP2018218723A priority Critical patent/JP2019059471A/en
Publication of JP2019059471A publication Critical patent/JP2019059471A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Catching Or Destruction (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

To provide a chemical liquid dispersion mobile vehicle, in which a four wheel steering device is arranged in a well-balanced manner.SOLUTION: A front steering angle sensor (33F) for detecting a rotation angle of a front steering cylinder (28F) and a right knuckle arm (24R) is arranged at a right front wheel (3R) side, a rear steering angle sensor (33R) for detecting a rotation angle of a rear steering cylinder (28R) and a left knuckle arm (24L) is arranged at a left rear wheel (4L) side, the front steering cylinder (28F) and the rear steering cylinder (28R) are at diagonal positions to a center of a machine body. The front steering angle sensor (33F) is provided on a top part of a front axle housing (30F), and the rear steering angle sensor (33R) is provided on a top part of a rear axle housing (30R) in a chemical liquid dispersion mobile vehicle.SELECTED DRAWING: Figure 6

Description

本発明は、薬液散布作業車に関する。   The present invention relates to a chemical solution spraying work vehicle.

乗用管理機の操舵装置が、特開2014−12464号公報に記載されている。この操舵装置は、前後左右の四輪が操向可能に構成され、前輪操舵や四輪操舵等の操舵方法を変更出来るようにしている。その構成は、左右車輪のナックルアームを連結するタイロッドが車台の左右中央に設ける複動型の操舵シリンダーで分割連結され、該操舵シリンダーのシリンダーハウジングの左右中央がアクスルハウジングに回動可能に連結されて、操舵シリンダーのロッドが左右へ移動することで分割タイロッドとナックルアームを介して車輪を操向する。   A steering device for a passenger management machine is described in Japanese Patent Laid-Open No. 2014-12464. In this steering device, four front and rear wheels can be steered, and steering methods such as front wheel steering and four wheel steering can be changed. In the configuration, tie rods connecting knuckle arms of left and right wheels are divided and connected by a double-acting steering cylinder provided at the left and right center of the chassis, and the left and right centers of the cylinder housing of the steering cylinder are rotatably connected to the axle housing The steering cylinder rod steers the wheel via the split tie rod and the knuckle arm by moving to the left and right.

特開2014−12464号公報JP, 2014-12464, A

前記乗用管理機の操舵装置は、操舵シリンダーのシリンダーハウジングに車台への回動支持部を設ける特殊な複動シリンダーを用いるために製造コストが高価になる。   The steering device of the passenger management machine is expensive to manufacture because it uses a special double-acting cylinder that provides a pivot support to the chassis in the cylinder housing of the steering cylinder.

また、操舵シリンダーの両ロッド端部を左右車輪のナックルアームと屈曲可能に分割タイロッドで連結しているために、回動連結部が多くて遊びが生じやすい。   Further, since the rod ends of the steering cylinder are connected to the knuckle arms of the left and right wheels by the split tie rods so as to be bendable, there are a lot of rotational connection parts and play easily occurs.

さらに、左右車輪の間隔(トレッド)を変更するためには、操舵シリンダーに連結する左右の分割タイロッドやアクスルハウジングに組み込むスペーサ等の多くの部品を取り換えなければならない。   Furthermore, in order to change the distance between the left and right wheels (tread), it is necessary to replace many parts such as the left and right split tie rods connected to the steering cylinder and the spacers incorporated in the axle housing.

本発明は、一般的な複動シリンダーを用いて前後四輪を操舵する四輪操舵装置を重量バランスよく廉価に構成した作業車の操舵装置とすることを課題とする。   An object of the present invention is to provide a steering apparatus for a working vehicle in which a four-wheel steering apparatus for steering four front and rear wheels using a general double-acting cylinder is configured at low cost with a good weight balance.

上記本発明の課題は、次の技術手段により解決される。   The object of the present invention is solved by the following technical means.

請求項1に記載の発明は、左右前輪3L,3Rに動力を伝動する前アクスルハウジング30Fの前側で、左右前輪3L,3Rのナックルアーム24L,24Rを前タイロッド25Fで連結すると共に、右側のナックルアーム24Rと走行車体2の左右中央に設ける操向シリンダー取付ブラケット27を前操向シリンダー28Fで連結し、左右後輪4L,4Rに動力を伝動する後アクスルハウジング30Rの後側で、左右後輪4L,4Rのナックルアーム24L,24Rを後タイロッド25Rで連結すると共に、左側のナックルアーム24Lと走行車体2の左右中央に設けるシリンダー座29を後操向シリンダー28Rで連結し、
右前輪3R側に前操向シリンダー28Fと右ナックルアーム24Rの回動角度を検出する前操向角度センサ33Fを配置し、左後輪4L側に後操向シリンダー28Rと左ナックルアーム24Lの回動角度を検出する後操向角度センサ33Rを配置する構成とし、
前操向シリンダー28Fと後操向シリンダー28Rは機体の中心に対して対角位置であり、前アクスルハウジング30Fの上部に前操向角度センサ33Fを設け、後アクスルハウジング30Rの上部に後操向角度センサ33Rを設けたことを特徴とする薬液散布作業車とする。
According to the first aspect of the invention, knuckle arms 24L and 24R of left and right front wheels 3L and 3R are connected by front tie rods 25F on the front side of front axle housing 30F transmitting power to left and right front wheels 3L and 3R. The steering cylinder mounting bracket 27 provided at the left and right center of the arm 24R and the traveling vehicle body 2 is connected by the front steering cylinder 28F, and power is transmitted to the left and right rear wheels 4L, 4R. As well as connecting the 4L, 4R knuckle arms 24L, 24R with the rear tie rods 25R, the left knuckle arm 24L and the cylinder seat 29 provided at the center of the left and right of the traveling vehicle body 2 are connected with the rear steering cylinder 28R,
A front steering angle sensor 33F for detecting a turning angle of the front steering cylinder 28F and the right knuckle arm 24R is disposed on the right front wheel 3R side, and the rear steering cylinder 28R and the left knuckle arm 24L are turned on the left rear wheel 4L side. Rear steering angle sensor 33R for detecting the movement angle is arranged,
The front steering cylinder 28F and the rear steering cylinder 28R are diagonally located with respect to the center of the airframe, and a front steering angle sensor 33F is provided at the top of the front axle housing 30F, and the rear steering at the top of the rear axle housing 30R. An angle sensor 33R is provided to provide a chemical solution dispersion work vehicle.

請求項2に記載の発明は、薬液を散布する左右サイド散布ブーム11L,11Rを設け、前記左右サイド散布ブーム11L,11Rを収納する左右サイド散布ブーム受け部11La,11Raは、左右サイド散布ブーム支持アーム11Lb,11Rbで支持する構成とし、前記左サイド散布ブーム支持アーム11Lbにブーム昇降ボタン13を設け、前記ブーム昇降ボタン13を操作すると、エンジンが停止した状態で左右サイド散布ブーム11L,11Rが昇降する構成としたことを特徴とする請求項1に記載の薬液散布作業車とする。
削除
The invention according to claim 2 is provided with left and right side dispersion booms 11L and 11R for dispersing a chemical solution, and the left and right side dispersion boom receivers 11La and 11Ra for storing the left and right side dispersion booms 11L and 11R support the left and right side dispersion booms. Arm 11Lb and 11Rb are configured to be supported, the boom raising and lowering button 13 is provided on the left side dispersion boom supporting arm 11Lb, and when the boom raising and lowering button 13 is operated, the left and right side dispersion booms 11L and 11R are raised and lowered with the engine stopped. The chemical liquid dispersion work vehicle according to claim 1, characterized in that:
Delete

請求項1に記載の発明で、左右前輪3L,3Rはそのナックルアーム24L,24Rが前タイロッド25Fで連結されて連動し、右側のナックルアーム24Rを前操向シリンダー28Fで操向することで左右前輪3L,3Rが同方向に操向され、左右後輪4L,4Rはそのナックルアーム24L,24Rが後タイロッド25Rで連結されて連動し、左側のナックルアーム24Lを後操向シリンダー28Rで操向することで左右後輪4L,4Rが同方向に操向されるが、前操向シリンダー28Fと後操向シリンダー28Rが通常の複動シリンダーで構成出来るために製造コストが低減される。   In the invention according to claim 1, the left and right front wheels 3L, 3R are interlocked by the knuckle arms 24L, 24R connected by the front tie rods 25F and interlocked, and the right knuckle arm 24R is steered by the front steering cylinder 28F The front wheels 3L and 3R are steered in the same direction, and the left and right rear wheels 4L and 4R are interlocked by the knuckle arms 24L and 24R being connected by the rear tie rods 25R and steering the left knuckle arm 24L with the rear steering cylinder 28R By doing so, the left and right rear wheels 4L, 4R are steered in the same direction, but the manufacturing cost is reduced because the front steering cylinder 28F and the rear steering cylinder 28R can be configured by ordinary double acting cylinders.

また、前アクスルハウジング30Fの前側に前タイロッド25Fと前操向シリンダー28Fが設けられ、後アクスルハウジング30Rの後側に後タイロッド25Rと後操向シリンダー28Rが設けられるので、メンテナンス作業が機体の前側と後側から容易に行える。   The front tie rod 25F and the front steering cylinder 28F are provided on the front side of the front axle housing 30F, and the rear tie rod 25R and the rear steering cylinder 28R are provided on the rear side of the rear axle housing 30R. And can be done easily from the back side.

また、右前輪3R側に前操向シリンダー28Fと前操向角度センサ33Fを配置し、左後輪4L側に後操向シリンダー28Rと後操向角度センサ33Rを配置する。   Further, the front steering cylinder 28F and the front steering angle sensor 33F are disposed on the right front wheel 3R side, and the rear steering cylinder 28R and the rear steering angle sensor 33R are disposed on the left rear wheel 4L side.

重量物である前操向シリンダー28Fと後操向シリンダー28Rが機体の中心に対して対角位置に配置されることで、機体の左右バランスが良くなり操向が安定して行える。
また、前アクスルハウジング30Fの上部に前操向角度センサ33Fを設け、後アクスルハウジング30Rの上部に後操向角度センサ33Rを設ける。
Since the front steering cylinder 28F and the rear steering cylinder 28R, which are heavy objects, are disposed at diagonal positions with respect to the center of the airframe, the left-right balance of the airframe is improved and steering can be performed stably.
Further, a front steering angle sensor 33F is provided on the top of the front axle housing 30F, and a rear steering angle sensor 33R is provided on the top of the rear axle housing 30R.

請求項2に記載の発明で、請求項1の効果に加えて、左サイド散布ブーム受け部11Laを支持する左サイド散布ブーム支持アーム11Lbにブーム昇降ボタン13を設ける。このブーム昇降ボタン13を操作すると、エンジンが停止した状態で左右サイド散布ブーム11L,11Rが昇降するので、薬液散布作業車への乗り降りがし易くなる。
削除
In the invention according to claim 2, in addition to the effect of claim 1, the boom raising and lowering button 13 is provided on the left side spread boom supporting arm 11Lb supporting the left side spread boom receiving portion 11La. When the boom lift button 13 is operated, the left and right side spray booms 11L and 11R move up and down with the engine stopped, so it is easy to get on and off the chemical solution spraying work vehicle.
Delete

薬液散布作業車の全体右側面図Overall right side view of the chemical spraying work vehicle 薬液散布作業車の全体正面図General front view of chemical sprayer 薬液散布作業車の全体平面図Overall plan view of the chemical sprayer 薬液散布作業車の薬剤散布作業状態の平面図Top view of chemical spray work state of chemical spray work vehicle フロントパネルの平面図Top view of the front panel 直進状態の走行車台の平面図Top view of the traveling chassis in straight ahead 右旋回状態の走行車台の平面図Top view of the traveling chassis with right turn 一部拡大正面図Partially enlarged front view 前後操舵シリンダー油圧駆動回路図Front and rear steering cylinder hydraulic drive circuit diagram 一部斜視図Partial perspective view

以下に、図面を参照しながら本発明の作業車の実施例である薬液散布作業車を説明する。なお、本明細書において薬液散布作業車の前進方向に向かって左右方向をそれぞれ左、右といい、前進方向を前、後進方向を後という。左右一対の構成部材がある場合、符号Lは左側、符号Rは右側を指す。   Hereinafter, a chemical solution dispersion work vehicle which is an embodiment of a work vehicle of the present invention will be described with reference to the drawings. In the present specification, the left and right directions are referred to as the left and right, respectively, in the forward direction of the chemical solution dispersion work vehicle, and the forward and backward directions are referred to as the forward and backward directions, respectively. When there is a pair of left and right components, the symbol L indicates the left side, and the symbol R indicates the right side.

図1は薬液を散布する薬液散布作業車の側面図、図2は薬液散布作業車の正面図、図3は平面図である。尚、これら図1〜図3は、後述する左右散布ブームを走行車体の左右両側面に収納した状態を示す。一方、図4は、薬液散布作業車が圃場で薬液を散布している状態を示す正面図である。   FIG. 1 is a side view of a chemical solution dispersion work vehicle for dispersing a chemical solution, FIG. 2 is a front view of the chemical solution dispersion work vehicle, and FIG. 3 is a plan view. Incidentally, FIGS. 1 to 3 show a state in which left and right scatter booms described later are accommodated in the left and right side surfaces of the traveling vehicle body. On the other hand, FIG. 4 is a front view which shows the state which the chemical | medical solution dispersion work vehicle is scattering the chemical | medical solution in the field.

図に示す通り、薬液散布作業車1の走行車体2には左右一対の前輪3L,3R、と左右一対の後輪4L,4Rが設けられていて、走行車体2の前側部には防除散布装置11が取り付けられている。   As shown in the figure, the traveling vehicle body 2 of the chemical solution dispersing work vehicle 1 is provided with a pair of left and right front wheels 3L, 3R and a pair of left and right rear wheels 4L, 4R. 11 is attached.

尚、図2に示す通り、本実施の薬液散布作業車1では、最低地上高さHが高く、輪間距離(トレッド)Wが広く構成されていて、作物を跨いで走行する。   In addition, as shown in FIG. 2, in the chemical solution dispersion work vehicle 1 of the present embodiment, the minimum ground height H is high, and the inter-wheel distance (tread) W is wide, and travels across crops.

走行車体2の左右一対の前輪3L,3R間の上方には、ボンネット5で覆われたエンジンが搭載されている。左右一対の前輪3L,3Rと左右一対の後輪4L,4Rの間の上方には操縦席6を設け、操縦席6の前方にハンドル7が設けられている。   Above the pair of left and right front wheels 3L, 3R of the traveling vehicle body 2, an engine covered with a bonnet 5 is mounted. A pilot seat 6 is provided above the pair of left and right front wheels 3L, 3R and the left and right pair of rear wheels 4L, 4R, and a steering wheel 7 is provided in front of the pilot seat 6.

ハンドル7を左右に操舵すると、後述の操舵設定によって、四輪操舵では左右一対の前輪3L,3R及び左右一対の後輪4L,4Rが同時に連動して逆位相に操舵され、前輪操舵では前輪3L,3Rのみが操向方向に操舵され、後輪操舵では後輪4L,4Rのみが操向方向に操舵されて、操舵方法を変更出来る操舵構成としている。   When the steering wheel 7 is steered to the left or right, the left / right pair of front wheels 3L, 3R and the left / right pair of rear wheels 4L, 4R are simultaneously interlocked and steered in opposite phase in four-wheel steering by steering setting described later. , 3R are steered in the steering direction, and in rear wheel steering, only the rear wheels 4L, 4R are steered in the steering direction, and the steering configuration can be changed.

また、操縦席6の回りを取り囲むように薬液タンク9を着脱自在に設け、薬液タンク9の下方に防除ポンプ10が設けられている。   Further, the chemical solution tank 9 is detachably provided so as to surround the driver's seat 6, and the control pump 10 is provided below the chemical solution tank 9.

また、防除散布装置11は機体前方に位置するセンター散布ブーム11Cと、センター散布ブーム11Cの左右両側に設けられた左・右サイド散布ブーム11L,11Rとで構成されている。   Further, the control and spread apparatus 11 is configured by a center spread boom 11C located in front of the machine body, and left and right side spread booms 11L and 11R provided on both left and right sides of the center spread boom 11C.

そして、防除散布装置11を昇降シリンダー15(図1参照)により昇降し、開閉レバー17L,17Rにより左・右サイド散布ブーム11L,11Rを夫々単独で左右に突出した散布作業状態(図4参照)と、走行車体2の両側方に沿わせた状態に収容する(図1〜図3参照)ように構成している。   Then, the control and spraying device 11 is moved up and down by the lifting and lowering cylinder 15 (see FIG. 1), and the left and right side spreading booms 11L and 11R are independently projected left and right by the opening and closing levers 17L and 17R (see FIG. 4) And, it is configured to be accommodated in a state along both sides of the traveling vehicle body 2 (see FIGS. 1 to 3).

そして、薬液タンク9の薬液は防除ポンプ10により防除散布装置11に送られ、センター散布ブーム11C及び左・右サイド散布ブーム11L,11Rに複数設けられた散布ノズル14,14…から、薬液が散布される。   The chemical solution in the chemical solution tank 9 is sent to the control and spraying apparatus 11 by the control pump 10, and the chemical solution is sprayed from the plurality of spraying nozzles 14, 14 ... provided in the center spraying boom 11C and the left and right side spraying booms 11L, 11R. Be done.

ハンドル7を立設するフロントパネル18には、図5に示す如く、ハンドル軸7aを中心に前側のエンジン監視パネル19には回転計19aとバッテリやオイルの状態を示すエンジン情報表示部19bが設け、右側前部には操舵方法を設定する直進ボタン21aと前輪操舵ボタン21bと後輪操舵ボタン21cと全輪操舵ボタン21dを設け、その下部にエンジン起動スイッチ20を設け、左側前部には防除散布装置11の散布装置制御ボタン22を設けている。   As shown in FIG. 5, the engine monitoring panel 19 on the front side with the handle shaft 7a provided with a tachometer 19a and an engine information display portion 19b indicating the state of the battery or oil, as shown in FIG. On the right front, there are provided the straight drive button 21a, the front wheel steering button 21b, the rear wheel steering button 21c and the all-wheel steering button 21d for setting the steering method. A spreader control button 22 of the spreader 11 is provided.

なお、前輪操舵ボタン21bと後輪操舵ボタン21cと全輪操舵ボタン21dでの制御は、全て一旦直進走行に戻した後に設定操舵になるようにする。   The control with the front wheel steering button 21b, the rear wheel steering button 21c, and the all wheel steering button 21d is such that setting steering is performed after once returning to straight running.

ボンネット5の側面にブーム昇降ボタン13を設けている。具体的には、図10に示すように、左サイド散布ブーム11Lを収納時に受ける左サイド散布ブーム受け部11Laを支持する左サイド散布ブーム支持アーム11Lbにブーム昇降ボタン13を取り付ける構成としている。エンジンが回転していない状態で作業者が操縦席6に乗り込む際に、前記ブーム昇降ボタン13を上側に上げる操作をすると、昇降シリンダー15を作動させて左・右サイド散布ブーム11L,11Rが上昇し(左右サイド散布ブーム受け部11La,11Raから離れて上昇)、作業者が左・右サイド散布ブーム11L,11Rの下方を通過して乗降し易くなる。また、作業者が操縦席6から降りる際に、左・右サイド散布ブーム11L,11Rを上昇させた状態でエンジンを停止させ、作業者が左・右サイド散布ブーム11L,11Rの下方を通過して降りやすくなる。そして、前記ブーム昇降ボタン13を下側に下げる操作をすると、左・右サイド散布ブーム11L,11Rは、左右サイド散布ブーム受け部11La,11Raに収納される。なお、符号Bはバッテリー収納受けである。   A boom raising and lowering button 13 is provided on the side of the hood 5. Specifically, as shown in FIG. 10, the boom raising and lowering button 13 is attached to the left side spread boom supporting arm 11Lb that supports the left side spread boom receiving portion 11La that receives the left side spread boom 11L when stored. When the operator gets into the cockpit 6 while the engine is not rotating, if the boom raising and lowering button 13 is moved upward, the raising and lowering cylinder 15 is operated to raise the left and right side scattering booms 11L and 11R. (Apart from the left and right side spray boom receiving portions 11La and 11Ra and rise), the worker passes below the left and right side spray booms 11L and 11R and gets on and off easily. In addition, when the operator gets off from the cockpit 6, the engine is stopped with the left and right side spray booms 11L and 11R raised, and the worker passes below the left and right side spray booms 11L and 11R. Be easy to get off. When the boom raising and lowering button 13 is lowered, the left and right side dispersion booms 11L and 11R are stored in the left and right side dispersion boom receivers 11La and 11Ra. In addition, the code | symbol B is a battery storage receptacle.

次に、走行車体2に対する前輪3L,3Rと後輪4L,4Rの取付を示す平面図である図6〜図8を用いて、操舵機構について説明する。   Next, the steering mechanism will be described with reference to FIGS. 6 to 8 which are plan views showing the attachment of the front wheels 3L, 3R and the rear wheels 4L, 4R to the traveling vehicle body 2. FIG.

伝動軸を内装した前アクスルハウジング30Fの左右端部に左右支脚ケース31L,31Rを設け、この左右支脚ケース31L,31Rの下端伝動ケース38L、38Rで側方に設けるフランジ32L,32Rに前輪3L,3Rを取り付け、同様に伝動軸を内装した後アクスルハウジング30Rの左右端部に左右支脚ケース31L,31Rを設け、この左右支脚ケース31L,31Rの下端伝動ケース38L、38Rで側方に設けるフランジ32L,32Rに後輪4L,4Rを取り付けている。   Left and right leg cases 31L and 31R are provided at left and right ends of the front axle housing 30F in which the transmission shaft is installed, and lower end transmission cases 38L and 38R of the left and right leg cases 31L and 31R are provided with flanges 32L and 32R on the front wheels 3L, 3R is attached, and the transmission shaft is similarly installed, and left and right leg cases 31L and 31R are provided at the left and right ends of the axle housing 30R, and flanges 32L provided laterally on lower end transmission cases 38L and 38R of the left and right leg cases 31L and 31R. , 32R have the rear wheels 4L, 4R attached.

なお、下端伝動ケース38L、38Rは、前後に4個の伝動ケースを使用するが、全て同一構成とすると共用性が高まって製造コストを低減できる。   In the lower end transmission cases 38L and 38R, four transmission cases are used in front and rear. However, if all of the lower transmission cases 38L and 38R have the same configuration, commonality is enhanced and manufacturing cost can be reduced.

左右支脚ケース31L,31Rの上端でフランジ32L,32Rの向きを変更するナックルアーム24L,24Rを前タイロッド25Fで連結して前輪3L,3Rを同一方向に操向し、同様に、左右支脚ケース31L,31Rの上端でフランジ32L,32Rの向きを変更するナックルアーム24L,24Rを後タイロッド25Rで連結して後輪4L,4Rを同一方向に操向する。   The knuckle arms 24L and 24R that change the direction of the flanges 32L and 32R at the upper end of the left and right leg cases 31L and 31R are connected by the front tie rods 25F to steer the front wheels 3L and 3R in the same direction. The knuckle arms 24L and 24R that change the direction of the flanges 32L and 32R at the upper end of the rear wheel 31R are connected by the rear tie rods 25R to steer the rear wheels 4L and 4R in the same direction.

前アクスルハウジング30Fの前側では走行車体2の左右メインフレームを連結する部材の中央部にボルトで前に向けて取り付ける操向シリンダー取付ブラケット27と右ナックルアーム24Rと一体のシリンダアーム26を前タイロッド25Fの上で複動型油圧シリンダーである前操向シリンダー28Fで連結し、同様に後アクスルハウジング30Rの後側では走行車体2の左右メインフレームを繋ぐプレート部材に取り付けたシリンダー座29と左ナックルアーム24Lと一体のシリンダアーム26を後タイロッド25Rの上で複動型油圧シリンダーである後操向シリンダー28Rで連結する。操向シリンダー取付ブラケット27は取り外して位置調整可能である。また、シリンダー座29も取り外して位置調整可能な部材としても良い。   At the front side of the front axle housing 30F, the steering cylinder mounting bracket 27 attached to the center of the member connecting the left and right main frames of the traveling vehicle body 2 with a bolt forward and the cylinder arm 26 integral with the right knuckle arm 24R is a front tie rod 25F The cylinder seat 29 and the left knuckle arm attached to the plate member which connects with the front steering cylinder 28F which is a double acting type hydraulic cylinder on the rear and similarly connects the left and right main frames of the traveling vehicle 2 on the rear side of the rear axle housing 30R. A cylinder arm 26 integral with 24L is connected on a rear tie rod 25R by a rear steering cylinder 28R which is a double acting hydraulic cylinder. The steering cylinder mounting bracket 27 is removable and position adjustable. Also, the cylinder seat 29 may be removed to be a position adjustable member.

操向シリンダー取付ブラケット27の前操向シリンダー28F取付部が左右前輪3L,3Rの操向中心近傍であり、シリンダー座29の後操向シリンダー28R取付部が左右後輪4L,4Rの操向中心近傍であることで、前操向シリンダー28Fと後操向シリンダー28Rのロッドスライドが効率的に作用する。   The front steering cylinder 28F mounting portion of the steering cylinder mounting bracket 27 is near the steering center of the left and right front wheels 3L, 3R, and the rear steering cylinder 28R mounting portion of the cylinder seat 29 is the steering center of the left rear wheel 4L, 4R Being in the vicinity, the rod slides of the front steering cylinder 28F and the rear steering cylinder 28R work efficiently.

また、前操向シリンダー28Fは前アクスルハウジング30Fと、後操向シリンダー28Rは後アクスルハウジング30Rと同じ高さに設けることで、走行車体2下部の地上高さHを高く確保できている。   Further, by providing the front steering cylinder 28F at the same height as the front axle housing 30F and the rear steering cylinder 28R at the same height as the rear axle housing 30R, the ground height H at the lower part of the traveling vehicle body 2 can be secured high.

前アクスルハウジング30Fの右端部近くの上部に右ナックルアーム24Rの回動角度を検出する前操向角度センサ33Fを設け、後アクスルハウジング30Rの左端部近くの上部に左ナックルアーム24Lの回動角度を検出する後操向角度センサ33Rを設ける。   A front steering angle sensor 33F for detecting the rotation angle of the right knuckle arm 24R is provided at the top near the right end of the front axle housing 30F, and the rotation angle of the left knuckle arm 24L is near the top end of the rear axle housing 30R A rear steering angle sensor 33R for detecting

前輪3L,3Rを操向する構成と後輪4L,4Rを操向する構成はほぼ同一で、前操向シリンダー28Fを走行車体2に取り付ける部材が操向シリンダー取付ブラケット27で後操向シリンダー28Rを走行車体2に取り付ける部材がシリンダー座29であって、部品の共用化で製造コストを低減できる。   The configuration for steering the front wheels 3L and 3R and the configuration for steering the rear wheels 4L and 4R are almost the same, and the member for attaching the front steering cylinder 28F to the traveling vehicle body 2 is the steering cylinder mounting bracket 27 and the rear steering cylinder 28R The member attached to the traveling vehicle body 2 is the cylinder seat 29, and the manufacturing cost can be reduced by sharing parts.

また、走行車体2に対して前操向シリンダー28Fが右側で後操向シリンダー28Rが左側であること、すなわち機体の中心に対して対角位置であることによって重い操向シリンダーが左右に分散されて全体の左右バランスを良くする。前操向シリンダー28Fと後操向シリンダー28Rは左右逆に配置しても良い。   Also, with the front steering cylinder 28F on the right side and the rear steering cylinder 28R on the left side with respect to the traveling vehicle body 2, the heavy steering cylinders are dispersed left and right by being diagonal to the center of the vehicle. Improve the overall left-right balance. The front steering cylinder 28F and the rear steering cylinder 28R may be disposed in the opposite directions.

図9は、前操向シリンダー28Fと後操向シリンダー28Rの油圧制御回路図で、エンジンEで駆動される油圧ポンプ34でオイルタンク37から吸い上げられたオイルがハンドル7で制御される分流器35を介して前バルブ36Fを通って前操向シリンダー28Fに送られ、また、後バルブ36Rを通って後操向シリンダー28Rに送られる。また、分流器35は、前記直進ボタン21aや前輪操舵ボタン21bや後輪操舵ボタン21cや全輪操舵ボタン21dで制御され、前操向シリンダー28Fと後操向シリンダー28Rを適宜に作動する。   FIG. 9 is a hydraulic control circuit diagram of the front steering cylinder 28F and the rear steering cylinder 28R, wherein the oil shunted from the oil tank 37 by the hydraulic pump 34 driven by the engine E is controlled by the handle 7 Through the front valve 36F to the front steering cylinder 28F and through the rear valve 36R to the rear steering cylinder 28R. Further, the flow divider 35 is controlled by the straight movement button 21a, the front wheel steering button 21b, the rear wheel steering button 21c, and the all wheel steering button 21d, and appropriately operates the front steering cylinder 28F and the rear steering cylinder 28R.

油圧配管は、図7に示す如く、走行車体2のフレームに沿って配策する。   The hydraulic piping is routed along the frame of the traveling vehicle body 2 as shown in FIG.

なお、前輪3L,3Rと後輪4L,4Rは、直進時にデフロックとし、操向するとデフロックを解除するようにしても良い。   The front wheels 3L and 3R and the rear wheels 4L and 4R may be diff lock when going straight and may be released when steering.

3L 左前輪
3R 右前輪
4L 左後輪
4R 右後輪
11L 左サイド散布ブーム
11R 右サイド散布ブーム
11La 左右サイド散布ブーム受け部
11Ra 左右サイド散布ブーム受け部
11Lb 左サイド散布ブーム支持アーム
11Rb 右サイド散布ブーム支持アーム
13 ブーム昇降ボタン
24L 左ナックルアーム
24R 右ナックルアーム
25F 前タイロッド
25R 後タイロッド
27 操向シリンダー取付ブラケット
28F 前操向シリンダー
28R 後操向シリンダー
29 シリンダー座
30F 前アクスルハウジング
30R 後アクスルハウジング
33F 前操向角度センサ
33R 後操向角度センサ
3L left front wheel 3R right front wheel 4L left rear wheel 4R right rear wheel 11L left side scattering boom 11R right side scattering boom 11La left and right side scattering boom receiving portion 11Ra left and right side scattering boom receiving portion 11Lb left side scattering boom support arm 11Rb right side scattering boom Support arm 13 Boom lift button 24L Left knuckle arm 24R Right knuckle arm 25F Front tie rod 25R Rear tie rod 27 Steering cylinder mounting bracket 28F Front steering cylinder 28R Rear steering cylinder 29 Cylinder seat 30F Front axle housing 30R Rear axle housing 33F Front steering Direction sensor 33R Rear steering angle sensor

Claims (2)

左右前輪(3L,3R)に動力を伝動する前アクスルハウジング(30F)の前側で、左右前輪(3L,3R)のナックルアーム(24L,24R)を前タイロッド(25F)で連結すると共に、右側のナックルアーム(24R)と走行車体(2)の左右中央に設ける操向シリンダー取付ブラケット(27)を前操向シリンダー(28F)で連結し、左右後輪(4L,4R)に動力を伝動する後アクスルハウジング(30R)の後側で、左右後輪(4L,4R)のナックルアーム(24L,24R)を後タイロッド(25R)で連結すると共に、左側のナックルアーム(24L)と走行車体(2)の左右中央に設けるシリンダー座(29)を後操向シリンダー(28R)で連結し、
右前輪(3R)側に前操向シリンダー(28F)と右ナックルアーム(24R)の回動角度を検出する前操向角度センサ(33F)を配置し、左後輪(4L)側に後操向シリンダー(28R)と左ナックルアーム(24L)の回動角度を検出する後操向角度センサ(33R)を配置する構成とし、
前操向シリンダー(28F)と後操向シリンダー(28R)は機体の中心に対して対角位置であり、前アクスルハウジング(30F)の上部に前操向角度センサ(33F)を設け、後アクスルハウジング(30R)の上部に後操向角度センサ(33R)を設けたことを特徴とする薬液散布作業車。
The knuckle arms (24L, 24R) of the left and right front wheels (3L, 3R) are connected by the front tie rods (25F) on the front side of the front axle housing (30F) transmitting power to the left and right front wheels (3L, 3R) After connecting the knuckle arm (24R) and the steering cylinder mounting bracket (27) provided at the left and right center of the traveling vehicle body (2) with the front steering cylinder (28F) and transmitting power to the left and right rear wheels (4L, 4R) On the rear side of the axle housing (30R), the left and right rear wheels (4L, 4R) knuckle arms (24L, 24R) are connected by a rear tie rod (25R), and the left knuckle arm (24L) and the traveling vehicle (2) The cylinder seat (29) provided in the center of the left and right of the is connected with the rear steering cylinder (28R),
A front steering angle sensor (33F) for detecting the turning angle of the front steering cylinder (28F) and the right knuckle arm (24R) is disposed on the right front wheel (3R) side, and rear steering on the left rear wheel (4L) side Rear steering angle sensor (33R) for detecting the rotation angle of the facing cylinder (28R) and the left knuckle arm (24L),
The front steering cylinder (28F) and the rear steering cylinder (28R) are diagonally located with respect to the center of the airframe, and a front steering angle sensor (33F) is provided at the top of the front axle housing (30F). A chemical solution dispersion work vehicle characterized by providing a rear steering angle sensor (33R) on the upper part of a housing (30R).
薬液を散布する左右サイド散布ブーム(11L,11R)を設け、前記左右サイド散布ブーム(11L,11R)を収納する左右サイド散布ブーム受け部(11La,11Ra)は、左右サイド散布ブーム支持アーム(11Lb,11Rb)で支持する構成とし、前記左サイド散布ブーム支持アーム(11Lb)にブーム昇降ボタン(13)を設け、前記ブーム昇降ボタン(13)を操作すると、エンジンが停止した状態で左右サイド散布ブーム(11L,11R)が昇降する構成としたことを特徴とする請求項1に記載の薬液散布作業車。 A left and right side spray boom support arm (11 Lb) is provided with left and right side spray booms (11L, 11R) for spraying a chemical solution, and the left and right side spray boom receivers (11La, 11Ra) for storing the left and right side spray booms (11L, 11R). , 11Rb), the left and right side spreading boom support arm (11Lb) is provided with a boom raising and lowering button (13) and the boom raising and lowering button (13) is operated to stop the engine. The chemical liquid dispersion work vehicle according to claim 1, wherein (11L, 11R) is configured to move up and down.
JP2018218723A 2018-11-21 2018-11-21 Mobile vehicle Pending JP2019059471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018218723A JP2019059471A (en) 2018-11-21 2018-11-21 Mobile vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018218723A JP2019059471A (en) 2018-11-21 2018-11-21 Mobile vehicle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2015115971A Division JP2017001475A (en) 2015-06-08 2015-06-08 Work vehicle

Publications (1)

Publication Number Publication Date
JP2019059471A true JP2019059471A (en) 2019-04-18

Family

ID=66176153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018218723A Pending JP2019059471A (en) 2018-11-21 2018-11-21 Mobile vehicle

Country Status (1)

Country Link
JP (1) JP2019059471A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110155170A (en) * 2019-05-22 2019-08-23 常熟华东汽车有限公司 The all-wheel steering device of vehicle
CN115447667A (en) * 2022-09-19 2022-12-09 江苏徐工工程机械研究院有限公司 Steering system of loader-digger and control method
KR102501638B1 (en) * 2022-09-30 2023-02-21 호산엔지니어링(주) Telescopic mast type aerial platform

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110155170A (en) * 2019-05-22 2019-08-23 常熟华东汽车有限公司 The all-wheel steering device of vehicle
CN110155170B (en) * 2019-05-22 2024-02-13 常熟华东汽车有限公司 All-wheel steering device for vehicle
CN115447667A (en) * 2022-09-19 2022-12-09 江苏徐工工程机械研究院有限公司 Steering system of loader-digger and control method
CN115447667B (en) * 2022-09-19 2023-07-28 江苏徐工工程机械研究院有限公司 Steering system of backhoe loader and control method
KR102501638B1 (en) * 2022-09-30 2023-02-21 호산엔지니어링(주) Telescopic mast type aerial platform

Similar Documents

Publication Publication Date Title
JP2019059471A (en) Mobile vehicle
EP3263371B1 (en) Axle device
JP2005061050A5 (en)
US20240043073A1 (en) All-terrain utility vehicle and methods thereof
US6997641B2 (en) Road milling machine with steering gear
US4126198A (en) Three-wheeled farm vehicle
JP2019017310A (en) Self-travel type pest control machine
US3123222A (en) Mobile cranes
JP2017001475A (en) Work vehicle
JP2017001476A (en) Work vehicle
JP4414033B2 (en) Agricultural chemical spray vehicle
JP2021029215A (en) Self-propelled pest control machine
CN210793342U (en) Agricultural machinery vehicle frame with front and back steering function
CN104853976B (en) Working vehicle
CN103523075B (en) Working truck
JPH081603Y2 (en) Management work vehicle
JP6645343B2 (en) Work vehicle
JP2020199791A (en) Work vehicle
US20240100931A1 (en) Work Vehicle
JP2021171016A (en) Self-propelled pest control machine
JP2021171015A (en) Self-propelled pest control machine
JP3221432B2 (en) Scattering vehicle
JP3503039B2 (en) Passenger management work vehicle
JP2503734Y2 (en) Walk-behind rice transplanter
JPH08318750A (en) Manned management working vehicle