JP5998334B2

JP5998334B2 - Soil disinfector

Info

Publication number: JP5998334B2
Application number: JP2012182179A
Authority: JP
Inventors: 恭生高山
Original assignee: Agritecno Yazaki Co Ltd
Current assignee: Agritecno Yazaki Co Ltd
Priority date: 2012-08-21
Filing date: 2012-08-21
Publication date: 2016-09-28
Anticipated expiration: 2032-08-21
Also published as: JP2014039485A

Description

本発明は、管理機やトラクタ等の車両（以下、「走行車両」とする）に装着され、薬液を土壌に注入する複数の薬液注入爪と、該薬液注入爪に薬液を圧送する複数の往復駆動型の薬液ポンプと、該薬液ポンプを駆動する接地輪とを備えた土壌消毒機に関し、特に、走行車両への装着や薬液ポンプからの吐出量調整の単独作業が可能な、手動による機体の姿勢制御構成に関する。 The present invention is attached to a vehicle such as a management machine or a tractor (hereinafter referred to as a “traveling vehicle”), and a plurality of chemical solution injection claws for injecting a chemical solution into soil, and a plurality of reciprocations for pumping the chemical solution to the chemical injection nail. The present invention relates to a soil disinfecting machine having a driving type chemical pump and a grounding wheel for driving the chemical pump, and in particular, a manual body that can be mounted on a traveling vehicle or adjusted independently from the chemical pump. The present invention relates to an attitude control configuration.

従来の土壌消毒機においては、走行車両の後部に設けたヒッチに土壌消毒機のステーを装着すると共に、該土壌消毒機の機体に薬液注入爪をピン等で下方に突出するように固定し、該薬液注入爪を土壌内に差し込むことにより、走行車両で土壌消毒機を牽引しながら、接地輪で駆動されるダイアフラム式の薬液ポンプからの薬液を、薬液注入爪の注入ノズルから土壌中に注入して、土壌の消毒作業を行う技術が公知となっている（例えば、特許文献１参照）。 In a conventional soil disinfector, the stay of the soil disinfector is attached to the hitch provided at the rear of the traveling vehicle, and the liquid injection claw is fixed to the body of the soil disinfector so as to protrude downward with a pin or the like, By inserting the chemical injection nail into the soil, the chemical solution from the diaphragm type chemical pump driven by the ground wheel is injected into the soil from the injection nozzle of the chemical injection nail while pulling the soil disinfecting machine with the traveling vehicle. And the technique which performs the disinfection operation | work of soil is well-known (for example, refer patent document 1).

特開平１１−２８９９５５号公報JP-A-11-289955

しかしながら、前記技術において、走行車両への土壌消毒機の着脱時には、一人が、土壌消毒機を持ち上げたり傾倒させたりして、そのステーを前記走行車両のヒッチとの着脱可能位置まで移動して保持しつつ、もう一人が、そのステーをピンやボルト等によってヒッチに着脱する必要があり、一人単独で着脱を行うには、ステーをヒッチとの着脱可能位置に設定保持するための専用スタンド等の治具が別途必要となり、治具が増えて作業コストが増加すると共に、治具の準備・収納にかかる分だけ着脱作業に時間がかかる、という問題があった。
更に、消毒作業を行う前に、薬液注入爪からの吐出液を計量して単位消毒長さ当たりの吐出量を把握し、所定の吐出量となるように薬液ポンプの往復幅を規制するが、この吐出量調整時には、走行車両に土壌消毒機を装着したままで、一人が、該土壌消毒機ごと接地輪を地面から浮上させてから手回しで回動しつつ、もう一人が、薬液注入爪からの吐出液を採取して吐出量を計量する必要があり、一人単独で吐出量調整を行うのは難しく、共同作業者が別途必要となり、人件費が増えて作業コストが増加すると共に、共同作業のため、二人のタイミングが合わないと計測精度の低下を招く場合がある、という問題があった。 However, in the above technique, when the soil disinfector is attached to or detached from the traveling vehicle, one person lifts or tilts the soil disinfector and moves the stay to a position where the traveling vehicle can be attached to or detached from the hitch. However, the other person needs to attach / detach the stay to / from the hitch with pins, bolts, etc. There is a problem that a jig is separately required, the number of jigs is increased, and the operation cost is increased, and it takes time to attach and detach the jig as much as preparation and storage of the jig.
Furthermore, before performing disinfection work, we measure the discharge liquid from the chemical liquid injection claw to grasp the discharge amount per unit sterilization length, and regulate the reciprocating width of the chemical liquid pump so that it becomes a predetermined discharge amount, At the time of adjusting the discharge amount, while the soil disinfector is attached to the traveling vehicle, one person lifts the grounding wheel together with the soil disinfector and rotates it by hand, while the other person removes it from the chemical injection claw. It is necessary to collect the discharge liquid and measure the discharge amount. It is difficult to adjust the discharge amount by one person, and it is difficult to adjust the discharge amount alone. Therefore, there is a problem that the measurement accuracy may be lowered if the timings of the two people do not match.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。
すなわち、請求項１においては、走行車両に装着され、薬液を土壌に注入する複数の薬液注入爪と、該薬液注入爪に薬液を圧送する複数の往復駆動型の薬液ポンプと、該薬液ポンプを駆動する接地輪とを備えた土壌消毒機において、前記薬液注入爪は、機体に設けた筒状の支持具内を上下摺動し、該支持具の支持孔から前記薬液注入爪の調整孔にかけて固定具を挿通固定することにより、所定の伸縮長さに設定する伸縮機構を有すると共に、前記調整孔は、前記薬液注入爪を土壌中に差し込んで薬液を注入する際の注入深さを設定する第一調整孔群と、薬液注入爪の先端を地面に当接させて機体の姿勢制御を行う第二調整孔群とから成り、該第二調整孔群は、前記第一調整孔群よりも下方にあって、第一調整孔群よりも小径の調整孔で構成したものである。
請求項２においては、前記第二調整孔群は、前記薬液注入爪を下方に突出し、該薬液注入爪と前記接地輪とによって機体を支持することにより、前記走行車両の係止部との着脱可能位置に土壌消毒機の被係止部を設定し、走行車両への土壌消毒機の装着を行う装着調整孔と、該装着後に少なくとも一つの薬液注入爪を下方に突出し、前記走行車両を支点にして接地輪を地面から上昇支持しつつ、該接地輪を回動して他の薬液注入爪からの吐出液の計量を行う吐出量調整孔とを有するものである。
請求項３においては、前記支持具に設けた筒状のガイド部材内を移動し第二調整孔群の各調整孔に挿通可能な第一軸部と、該第一軸部よりも大径で同一軸心上に形成され、前記ガイド部材内を移動して第二調整孔群の各調整孔には挿通不能で第一調整孔群の各調整孔には挿通可能な第二軸部と、前記両軸部を支持孔に向かって常時付勢する付勢体と、前記両軸部を支持孔に向かって押し引き操作する把持部とを備えるものである。
請求項４においては、前記第一軸部の途中部に筒状のパイプ部材を着脱可能に外嵌することにより、該途中部に前記第二軸部を形成するものである。
請求項５においては、前記薬液ポンプは、ダイアフラム式ポンプであって、該ダイアフラム式ポンプを個々に作動させる複数のカムを備え、該カムは、前記接地輪と連動する共通のカム軸に軸支されると共に、円盤状の基礎円の外周にカム凸部を有しており、各カム間でカム凸部の位相をずらせると共に、各カムの隣接するカム凸部間には、全てのカムで下死点が一致する共通下死点を少なくとも一箇所設けるものである。 The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in claim 1, a plurality of chemical solution injection claws that are attached to a traveling vehicle and inject a chemical solution into soil, a plurality of reciprocating type chemical solution pumps that pump the chemical solution to the chemical solution injection nails, and the chemical solution pump In a soil disinfecting machine having a grounding wheel to be driven, the chemical solution injection claw slides up and down in a cylindrical support provided on the machine body and extends from the support hole of the support device to the adjustment hole of the chemical injection nail. It has an expansion / contraction mechanism that sets a predetermined expansion / contraction length by inserting and fixing a fixture, and the adjustment hole sets an injection depth when the chemical liquid injection claw is inserted into the soil to inject the chemical liquid. It consists of a first adjustment hole group and a second adjustment hole group that controls the attitude of the airframe by bringing the tip of the chemical injection nail into contact with the ground, and the second adjustment hole group is more than the first adjustment hole group. The lower adjustment hole is smaller than the first adjustment hole group. It is intended.
According to a second aspect of the present invention, the second adjustment hole group protrudes downward from the chemical solution injection claw, and supports the vehicle body by the chemical solution injection claw and the grounding wheel, so that it can be attached to and detached from the locking portion of the traveling vehicle. Set the locked part of the soil disinfector at a possible position, mount the soil disinfector to the traveling vehicle, and project at least one chemical injection claw downward after the mounting, and support the traveling vehicle In this manner, the grounding wheel is supported so as to be lifted from the ground, and the grounding wheel is rotated and the discharge amount adjusting hole for measuring the amount of discharged liquid from the other liquid injection claw is provided.
In Claim 3, the 1st axial part which can move in the cylindrical guide member provided in the said support tool, and can be inserted in each adjustment hole of a 2nd adjustment hole group, and is larger diameter than this 1st axial part. A second shaft portion that is formed on the same axis, moves in the guide member and cannot be inserted into each adjustment hole of the second adjustment hole group, and can be inserted into each adjustment hole of the first adjustment hole group; An urging body that constantly urges both the shaft portions toward the support hole and a grip portion that pushes and pulls both the shaft portions toward the support hole are provided.
According to a fourth aspect of the present invention, the second shaft portion is formed in the middle portion of the first shaft portion by detachably fitting a cylindrical pipe member to the middle portion.
According to a fifth aspect of the present invention, the chemical pump is a diaphragm pump, and includes a plurality of cams that individually operate the diaphragm pump, and the cams are pivotally supported on a common cam shaft that is linked to the grounding wheel. In addition, cam protrusions are provided on the outer periphery of the disk-shaped base circle, and the cam protrusions are shifted in phase between the cams. At least one common bottom dead center with the same bottom dead center is provided.

本発明は、以上のように構成したので、以下に示す効果を奏する。
すなわち、請求項１により、固定具により、第二調整孔群の各調整孔を支持孔の位置に係止して薬液注入爪を伸縮させ、土壌消毒機の機体を所定の姿勢に自在に制御することができ、例えば、走行車両への土壌消毒機の着脱時において、土壌消毒機を持ち上げたり傾倒させたりして、その被係止部を走行車両の係止部との着脱可能位置まで移動して保持しつつ、該被係止部をピンやボルト等によって係止部に着脱させる必要がなくなり、一人単独で着脱を行うのに、被係止部を着脱可能位置に設定保持するための専用スタンド等が不要となる。このため、着脱時に必要な治具が減って作業コストを低減できると共に、治具の準備・収納にかかる分だけ着脱作業の作業時間を短縮できる。更に、吐出量調整時においても、走行車両に土壌消毒機を装着したままで該土壌消毒機ごと接地輪を地面から浮上させてから手回しで回動しつつ、吐出液を採取して吐出量を計量する必要がなくなり、一人単独での吐出量調整が容易となって共同作業者が不要となる。このため、人件費が減って作業コストを低減できると共に、共同作業の場合に比べてタイミング合わせ等が容易となって計測精度が向上する。加えて、このような第二調整孔群の各調整孔の径を小さくするので、該調整孔の周囲部分の部材強度を高く設定することができ、消毒作業中に土壌面下で砕土流から受ける衝撃力により各調整孔を起点にして薬液注入爪が折損するのを、有効に防止できる。
請求項２により、走行車両への土壌消毒機の装着作業と薬液注入爪からの吐出液の吐出量調整作業とを、薬液注入爪の伸縮による機体の姿勢制御だけで行うことができ、消毒作業の前準備にかかる時間や手間を省いて、作業効率の大幅な向上を図ることができる。
請求項３により、単一の固定具によって、両調整孔群の各調整孔を支持孔に固定することができ、部品点数が少なくて済み、部品コストの低減とメンテナンス性の向上を図ることができる。
請求項４により、単一の部材を加工して両軸部を形成する必要がなく、加工コストが低減できると共に、メンテナンス時には損耗した軸部の方だけ交換すれば済み、メンテナンスコストを低減できる。
請求項５により、吐出量調整時に接地輪を手回しする際、他のカムに当接するカムフォロワーからカム軸が受ける変動抵抗を小さくすることができ、大きな変動抵抗のせいで接地輪が動きにくくなったり、逆に、急回転してカムフォロワーがカムとの間でスリップしたりすることを、十分に防止することができ、吐出速度が安定して計量精度が向上する。更に、前記共通下死点に達すると、接地輪を回している手にかかる負荷が小さくなることから、手回し中にカム凸部の位置を正確に把握することができ、１回転の途中で一個のカム凸部を越えたところで回転を止めて吐出液の計量を行うことも可能となり、吐出量調整作業にかかる時間を短縮できる。 Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, according to claim 1, by using the fixture, each adjustment hole of the second adjustment hole group is locked at the position of the support hole, and the chemical injection claw is expanded and contracted to freely control the body of the soil disinfecting machine to a predetermined posture. For example, when the soil disinfector is attached to or detached from the traveling vehicle, the soil disinfector is lifted or tilted to move the locked portion to a position where it can be attached to or detached from the traveling vehicle retaining portion. For holding the locked portion at the detachable position, it is not necessary to attach and detach the locked portion to the locking portion with a pin, bolt or the like. A dedicated stand is not required. For this reason, the number of jigs required for attachment / detachment can be reduced, and the work cost can be reduced, and the work time for the attachment / detachment work can be shortened by the amount required for the preparation / storage of the jig. Furthermore, even when adjusting the discharge amount, the ground vehicle is lifted from the ground with the soil disinfector attached to the traveling vehicle, and then rotated by hand, and the discharge liquid is collected to reduce the discharge amount. There is no need to weigh, and it is easy to adjust the discharge amount by one person, eliminating the need for a collaborator. For this reason, the labor cost can be reduced and the work cost can be reduced, and the timing adjustment can be facilitated and the measurement accuracy can be improved as compared with the case of the joint work. In addition, since the diameter of each adjustment hole of the second adjustment hole group is made small, the strength of the member around the adjustment hole can be set high, and the sterilization flow can be performed under the soil surface under the disinfection operation. It is possible to effectively prevent the chemical injection claw from being broken starting from each adjustment hole due to the impact force received.
According to claim 2, the operation of mounting the soil disinfector on the traveling vehicle and the operation of adjusting the discharge amount of the discharge liquid from the chemical injection claw can be performed only by the attitude control of the airframe by the expansion and contraction of the chemical injection claw. The work efficiency can be greatly improved by eliminating the time and labor required for the preparation.
According to claim 3, each adjustment hole of both adjustment hole groups can be fixed to the support hole by a single fixing tool, the number of parts can be reduced, and the parts cost can be reduced and the maintainability can be improved. it can.
According to the fourth aspect, it is not necessary to form both shaft portions by processing a single member, the processing cost can be reduced, and only the worn shaft portion is replaced at the time of maintenance, so that the maintenance cost can be reduced.
According to claim 5, when the grounding wheel is manually rotated when adjusting the discharge amount, the variable resistance received by the cam shaft from the cam follower contacting another cam can be reduced, and the grounding wheel is difficult to move due to the large variable resistance. Or, conversely, it is possible to sufficiently prevent the cam follower from slipping between the cam and the sudden rotation, and the discharge speed is stabilized and the measurement accuracy is improved. Further, when the common bottom dead center is reached, the load applied to the hand turning the grounding wheel is reduced, so that the position of the cam convex portion can be accurately grasped during the hand turning, and one piece is made during one rotation. It becomes possible to stop the rotation beyond the cam convex portion and measure the discharged liquid, and the time required for the discharge amount adjustment work can be shortened.

歩行型管理機への装着時における、本発明に係わる土壌消毒機の全体構成を示す側面図である。It is a side view which shows the whole structure of the soil disinfection machine concerning this invention at the time of mounting | wearing with a walk type management machine. 土壌消毒機の平面図である。It is a top view of a soil disinfector. 土壌消毒機の背面図である。It is a rear view of a soil disinfector. 薬液注入爪の側面図である。It is a side view of a chemical | medical solution injection nail. 薬液注入爪の伸縮機構を示す支持具の平面一部断面図であって、図５（ａ）は、支持孔間に注入深さ調整孔が位置する場合の支持具の平面一部断面図、図５（ｂ）は、支持孔間に装着調整孔を位置させて固定具を挿通する前の支持具の平面一部断面図、図５（ｃ）は、支持孔間に装着調整孔を位置させて固定具を挿通した後の支持具の平面一部断面図である。FIG. 5 (a) is a partial plan view of a plane of the support when the injection depth adjustment hole is located between the support holes, FIG. FIG. 5B is a partial cross-sectional view of the support tool before the fixing tool is inserted with the mounting adjustment hole positioned between the support holes, and FIG. 5C shows the mounting adjustment hole positioned between the support holes. It is a plane partial cross section figure of the support tool after letting it let it pass a fixing tool. 吐出量調整時における土壌消毒機の側面図である。It is a side view of the soil disinfector at the time of discharge amount adjustment. 支持具に注入深さ調整孔を固定した場合における土壌消毒機の側面図である。It is a side view of the soil disinfector when the injection depth adjustment hole is fixed to the support. 薬液ポンプ、ポンプ駆動機構、吐出量調整機構を示す土壌消毒機後部の側面一部断面図である。It is side surface partial sectional drawing of the soil disinfection machine rear part which shows a chemical | medical solution pump, a pump drive mechanism, and a discharge amount adjustment mechanism.

以下、本発明の実施の形態について詳細に説明する。
なお、図１の矢印Ｆで示す方向を、土壌消毒機１の前進方向とし、以下で述べる各部材の位置や方向等はこの前進方向を基準とするものである。 Hereinafter, embodiments of the present invention will be described in detail.
The direction indicated by the arrow F in FIG. 1 is the forward direction of the soil disinfector 1, and the positions and directions of the members described below are based on this forward direction.

まず、本発明に関わる土壌消毒機１の全体構成について、図１乃至図３により説明する。
該土壌消毒機１とは、歩行型管理機２の後部に装着して牽引されるものであるため、該歩行型管理機２について簡単に説明する。該歩行型管理機２においては、前後にエンジン３とミッションケース４が配置され、該ミッションケース４の前下部に車軸５が回動可能に支持され、該車軸５の左右端に左右一対の駆動輪６・６が固設されており、エンジン３からのエンジン動力がミッションケース４内で変速されて車軸５に伝達され、駆動輪６・６が走行駆動される。 First, the whole structure of the soil disinfector 1 according to the present invention will be described with reference to FIGS. 1 to 3.
Since the soil disinfecting machine 1 is attached to and pulled by the rear part of the walking type management machine 2, the walking type management machine 2 will be briefly described. In the walking type management machine 2, an engine 3 and a mission case 4 are arranged at the front and rear, an axle 5 is rotatably supported at the front lower part of the mission case 4, and a pair of left and right drives are provided at the left and right ends of the axle 5. The wheels 6 and 6 are fixed, and engine power from the engine 3 is shifted in the transmission case 4 and transmitted to the axle 5 so that the drive wheels 6 and 6 are driven to travel.

前記ミッションケース４の後上部には、ハンドルフレーム７を介してハンドル８の前端部が取り付けられ、該ハンドル８は、後上方に向かって左右に分岐して延出され、各分岐後端部にはグリップ９が設けられている。更に、前記ミッションケース４の後端からは、装着ステー１０が後方に突出され、その突出端面に、側面視で後に開いたＵ字状のヒッチ１１が固設されており、該ヒッチ１１を介して土壌消毒機１が歩行型管理機２に装着される。これにより、作業者は後方でハンドル８のグリップ９を把持して圃場を歩きながら、駆動輪６・６によって歩行型管理機２を走行させると共に、土壌消毒機１を牽引して消毒作業が行われる。 A front end portion of a handle 8 is attached to the rear upper portion of the transmission case 4 via a handle frame 7, and the handle 8 is branched to extend left and right toward the rear upper side. Is provided with a grip 9. Furthermore, a mounting stay 10 projects rearward from the rear end of the transmission case 4, and a U-shaped hitch 11 that is opened rearward in a side view is fixed to the projecting end surface. The soil disinfecting machine 1 is attached to the walking-type management machine 2. As a result, the worker grips the grip 9 of the handle 8 at the rear and walks the field while driving the walking type management machine 2 with the drive wheels 6 and 6 and pulling the soil disinfecting machine 1 to perform the disinfection work. Is called.

このようにして牽引される土壌消毒機１において、その前後方向に、メインフレーム１２が延出され、該メインフレーム１２の前部からは、前ステー１３が立設され、該前ステー１３の上部に、前記ヒッチ１１への装着部２２が配置される。 In the soil disinfecting machine 1 towed in this way, a main frame 12 extends in the front-rear direction, a front stay 13 is erected from the front portion of the main frame 12, and an upper portion of the front stay 13 In addition, a mounting portion 22 to the hitch 11 is disposed.

更に、前記メインフレーム１２の前後途中部には、その下面から左右方向に第一サブフレーム１４が延設される。該第一サブフレーム１４には、その左右端に、伸縮機構１５Ｌ・１５Ｒを介して、左右の薬液注入爪１６Ｌ・１６Ｒが所定の伸縮長さに設定可能に配置されると共に、左右端近傍の背面には、正面視門型形状のタンク保持フレーム１７の左右下端が固設されている。そして、該タンク保持フレーム１７の前面と、その上下途中部から前方に張り出した固定バンド１９とにより、前記薬液タンク１８がメインフレーム１２の前半部の上面に載置支持される。 Further, a first sub-frame 14 extends in the left-right direction from the lower surface of the main frame 12 in the middle of the front and rear. In the first sub-frame 14, left and right chemical solution injection claws 16L and 16R are disposed on the left and right ends via extension mechanisms 15L and 15R so as to be set to a predetermined extension / contraction length, and in the vicinity of the left and right ends. The left and right lower ends of a tank holding frame 17 having a front view portal shape are fixed on the rear surface. The chemical liquid tank 18 is placed and supported on the upper surface of the front half of the main frame 12 by the front surface of the tank holding frame 17 and the fixing band 19 projecting forward from the middle part of the tank.

加えて、前記メインフレーム１２の後端部からは、後ステー２０が立設され、該後ステー２０の上端から左右方向に、第二サブフレーム２３が延設されている。該第二サブフレーム２３においては、その左右略中央付近に、往復駆動型のダイアフラム式の第一薬液ポンプ２１Ｌと第二薬液ポンプ２１Ｒが左右に配置され、該薬液ポンプ２１Ｌ・２１Ｒの下方に、それぞれ、ポンプ駆動機構２４Ｌ・２４Ｒが設けられている。そして、該ポンプ駆動機構２４Ｌ・２４Ｒは、共通の接地輪軸２７に連動連結され、該接地輪軸２７の両端部には、左右の接地輪２８Ｌ・２８Ｒが固設されており、接地輪２８Ｌ・２８Ｒが回転すると、その回転動力が共通の接地輪軸２７を介してポンプ駆動機構２４Ｌ・２４Ｒに入力される。 In addition, a rear stay 20 is erected from the rear end portion of the main frame 12, and a second subframe 23 extends from the upper end of the rear stay 20 in the left-right direction. In the second sub-frame 23, a reciprocating diaphragm type first chemical liquid pump 21L and a second chemical liquid pump 21R are arranged on the left and right in the vicinity of the center of the left and right, below the chemical liquid pumps 21L and 21R, Pump drive mechanisms 24L and 24R are respectively provided. The pump drive mechanisms 24L and 24R are linked to a common grounding wheel shaft 27. Left and right grounding wheels 28L and 28R are fixed to both ends of the grounding wheel shaft 27, and the grounding wheels 28L and 28R are fixed. Is rotated, the rotational power is input to the pump drive mechanisms 24L and 24R via the common grounding wheel shaft 27.

前記第二サブフレーム２３の右端部には、その上面に支柱３０が締結固設され、該支柱３０の右側には、保持リング３１により、洗浄用のボトル３２が転倒不能に保持された状態で、前記第二サブフレーム２３の右端部の上面に載置されている。そして、第二サブフレーム２３上で、前記薬液ポンプ２１Ｌ・２１Ｒの外側近傍からは、取付プレート３４・３４が立設され、該取付プレート３４・３４上端には、薬液ポンプ２１Ｌ・２１Ｒからの吐出液の流れの有無を確認するための薬液流確認計３３・３３が、その吐出側が前斜め上方を向くようにして傾斜配置される。 At the right end of the second sub-frame 23, a support column 30 is fastened and fixed on the upper surface, and on the right side of the support column 30, a holding ring 31 holds the cleaning bottle 32 so that it cannot be overturned. The second sub-frame 23 is placed on the upper surface of the right end portion. On the second subframe 23, mounting plates 34 and 34 are erected from the vicinity of the outside of the chemical pumps 21L and 21R. Discharges from the chemical pumps 21L and 21R are provided at the upper ends of the mounting plates 34 and 34, respectively. The chemical flow confirmation meters 33 and 33 for confirming the presence / absence of the liquid flow are inclined so that the discharge side faces obliquely upward in the front direction.

更に、前記メインフレーム１２の後端面には、取付板２９が固設され、該取付板２９には、前記薬液ポンプ２１Ｌ・２１Ｒの吐出量を自在に変更可能な吐出量調整機構２６が設けられている。 Furthermore, a mounting plate 29 is fixed to the rear end surface of the main frame 12, and the mounting plate 29 is provided with a discharge amount adjusting mechanism 26 that can freely change the discharge amount of the chemical pumps 21L and 21R. ing.

加えて、前記薬液タンク１８と薬液ポンプ２１Ｌ・２１Ｒとの間は、入切コック３８を介し、吸入ホース３５・３５によって接続され、該薬液ポンプ２１Ｌ・２１Ｒと前記薬液流確認計３３・３３との間は、吐出ホース３６・３６によって接続され、該薬液流確認計３３・３３と前記薬液注入爪１６Ｌ・１６Ｒとの間は、注入ホース３７・３７によって接続されている。 In addition, the chemical liquid tank 18 and the chemical liquid pumps 21L and 21R are connected by suction hoses 35 and 35 via an on / off cock 38, and the chemical liquid pumps 21L and 21R and the chemical liquid flow checkers 33 and 33 are connected to each other. Are connected by discharge hoses 36 and 36, and the chemical liquid flow confirmation meters 33 and 33 and the chemical liquid injection claws 16L and 16R are connected by injection hoses 37 and 37.

以上のような構成において、土壌消毒機１が歩行型管理機２によって牽引されると、接地輪２８Ｌ・２８Ｒが回転してポンプ駆動機構２４Ｌ・２４Ｒが作動し、薬液ポンプ２１Ｌ・２１Ｒが駆動されて薬液タンク１８内の薬液が吸引される。すると、この薬液が、吸入ホース３５・３５、入切コック３８・３８、薬液ポンプ２１Ｌ・２１Ｒ、吐出ホース３６・３６、薬液流確認計３３・３３、及び注入ホース３７・３７を介して、土壌中に差し込まれている薬液注入爪１６Ｌ・１６Ｒまで圧送される。 In the configuration as described above, when the soil disinfecting machine 1 is pulled by the walking type management machine 2, the grounding wheels 28L and 28R rotate, the pump drive mechanisms 24L and 24R are operated, and the chemical liquid pumps 21L and 21R are driven. Then, the chemical solution in the chemical solution tank 18 is sucked. Then, this chemical solution is supplied to the soil through the suction hoses 35 and 35, the on / off cocks 38 and 38, the chemical pumps 21L and 21R, the discharge hoses 36 and 36, the chemical flow confirmation meters 33 and 33, and the injection hoses 37 and 37. It is pumped to the chemical injection claws 16L and 16R inserted therein.

次に、前記薬液注入爪１６Ｌ・１６Ｒと、その伸縮機構１５Ｌ・１５Ｒについて、図１、図２、図４、図５により説明する。
薬液注入爪１６Ｌにおいては、板状の爪本体３９が前進方向Ｆに向かって前斜め下方に傾斜した姿勢に保持されると共に、該爪本体３９の上下略中央部から下端にかけて、その前面には、先端が凸状の刃部３９ａが形成されており、土壌をかき分けて前進する薬液注入爪１６Ｌが土壌面下で砕土流から受ける抵抗を減少させ、爪本体３９の受ける衝撃力を小さくするようにしている。 Next, the said chemical | medical solution injection | pouring nail | claw 16L * 16R and its expansion-contraction mechanism 15L * 15R are demonstrated using FIG.1, FIG.2, FIG.4 and FIG.
In the liquid injection claw 16L, the plate-like claw body 39 is held in a posture inclined obliquely forward and downward in the forward direction F, and from the substantially vertical center to the lower end of the claw body 39, The tip 39a is formed with a convex blade part 39a, so that the chemical injection claw 16L that advances by dividing the soil is reduced the resistance received from the crushed soil flow under the soil surface, and the impact force received by the claw body 39 is reduced. I have to.

一方、爪本体３９の後面部には、下端に薬液ノズル４１を設けたホースガイド４０が固設され、該ホースガイド４０内に前記注入ホース３７が挿通保持され、該注入ホース３７の下端は、前記薬液ノズル４１に連通連結されており、前記薬液流確認計３３からの薬液を、注入ホース３７を介して薬液ノズル４１から土壌中に注入できるようにしている。 On the other hand, a hose guide 40 provided with a chemical nozzle 41 at the lower end is fixed to the rear surface portion of the claw body 39, and the injection hose 37 is inserted and held in the hose guide 40. The lower end of the injection hose 37 is The chemical solution nozzle 41 is connected to the chemical solution nozzle 41 so that the chemical solution from the chemical solution flow confirmation meter 33 can be injected into the soil from the chemical solution nozzle 41 via the injection hose 37.

そして、この薬液ノズル４１の吐出口４１ａの土壌面からの注入深さを設定するために、注入深さ調整孔５１ａ・５１ｂ・５１ｃ・５１ｄが、上から順に略等間隔で、爪本体３９を左右に貫通して設けられており、いずれの注入深さ調整孔５１ａ・５１ｂ・５１ｃ・５１ｄも、前記刃部３９ａよりも上方にあって、土壌面下には潜り込まない位置に設定されている。 In order to set the injection depth from the soil surface of the discharge port 41a of the chemical nozzle 41, the injection depth adjustment holes 51a, 51b, 51c, 51d are arranged at substantially equal intervals in order from the top. The injection depth adjusting holes 51a, 51b, 51c and 51d are set above the blade portion 39a so as not to sink under the soil surface. .

更に、刃部３９ａの後方の爪本体３９には、後で詳述するような、吐出量調整時に使用する吐出量調整孔５２ａと、歩行型管理機２への土壌消毒機１の装着時に使用する装着調整孔５２ｂとが、上から順に、爪本体３９を左右に貫通して設けられており、該吐出量調整孔５２ａ・装着調整孔５２ｂのいずれも、前記刃部３９ａの直後方にあって、土壌面下に潜り込み可能な位置に設定されている。 Further, the nail body 39 behind the blade portion 39a is used when the soil disinfection device 1 is mounted on the walking type management machine 2 and the discharge amount adjustment hole 52a used when adjusting the discharge amount as will be described in detail later. A mounting adjustment hole 52b is formed so as to penetrate the claw body 39 from left to right in order from the top, and both the discharge amount adjustment hole 52a and the mounting adjustment hole 52b are located immediately after the blade portion 39a. Therefore, it is set at a position where it can sink under the soil surface.

そして、このような吐出量調整孔５２ａ・装着調整孔５２ｂから成る第二調整孔群５２は、前記注入深さ調整孔５１ａ・５１ｂ・５１ｃ・５１ｄから成る第一調整孔群５１と比べ、各調整孔の大きさが小さく設定されており、第二調整孔群５２における各調整孔５２ａ・５２ｂの周囲部分の部材強度を、第一調整孔群５１の各注入深さ調整孔５１ａ・５１ｂ・５１ｃ・５１ｄよりも高く設定できるようにしている。 Further, the second adjustment hole group 52 including the discharge amount adjustment hole 52a and the mounting adjustment hole 52b is different from the first adjustment hole group 51 including the injection depth adjustment holes 51a, 51b, 51c, and 51d. The size of the adjustment hole is set to be small, and the strength of the members around the adjustment holes 52a and 52b in the second adjustment hole group 52 is set to the injection depth adjustment holes 51a and 51b of the first adjustment hole group 51. It can be set higher than 51c and 51d.

また、このような薬液注入爪１６Ｌは、前記第一サブフレーム１４の左右端に固設した支持具４４内に、前述の如く前斜め下方への傾斜姿勢で、上下摺動可能に保持されている。 Further, such a chemical solution injection claw 16L is held in a support 44 fixed to the left and right ends of the first sub-frame 14 so as to be vertically slidable in an obliquely downwardly inclined posture as described above. Yes.

該支持具４４は、前記第一サブフレーム１４の左右端に固設された垂直板状の内板４２と、該内板４２の外面に前後内端が固設される左右内側開放の平面視Ｕ字状の外枠４３とから成り、このうちの内板４２には内支持孔４２ａが穿孔される。そして、前記外枠４３には、筒状のガイド部材４５の基部が嵌挿し固定され、該ガイド部材４５の内端開口に外支持孔４５ａが形成されており、これらの内支持孔４２ａ・外支持孔４５ａは、左右方向に延びる同一の軸心５６上に配置されている。 The support 44 includes a vertical plate-like inner plate 42 fixed to the left and right ends of the first sub-frame 14, and a left and right inner side open plan view in which front and rear inner ends are fixed to the outer surface of the inner plate 42. The inner plate 42 is formed with an inner support hole 42a. A base portion of a cylindrical guide member 45 is fitted and fixed to the outer frame 43, and an outer support hole 45a is formed in an inner end opening of the guide member 45. The inner support hole 42a and the outer The support hole 45a is disposed on the same axis 56 extending in the left-right direction.

このような構成の支持具４４において、前記内板４２と外枠４３の間に、前記薬液注入爪１６Ｌを上下摺動させ、前記支持孔４２ａ・４５ａ間に、前述した調整孔５１ａ・５１ｂ・５１ｃ・５１ｄ・５２ａ・５２ｂのうちのいずれか一つを配置した上で、固定具５４の軸部５５の少なくとも一部を挿通することにより、特定の調整孔を係止して薬液注入爪１６Ｌを所定の伸縮長さＬに設定するようにしている。 In the support tool 44 having such a configuration, the chemical solution injection claw 16L is slid vertically between the inner plate 42 and the outer frame 43, and the adjustment holes 51a, 51b,. After placing any one of 51c, 51d, 52a, and 52b, by inserting at least a part of the shaft portion 55 of the fixture 54, the specific adjustment hole is locked and the chemical solution injection claw 16L Is set to a predetermined expansion / contraction length L.

該固定具５４には、前記ガイド部材４５内で軸心５６上に配置される第一軸部４６と、該第一軸部４６の途中部にパイプ部材５３を着脱可能に外嵌して形成される第二軸部４７とが備えられ、該第二軸部４７より外側の第一軸部４６には、第二軸部４７の軸方向位置を調整する調整ナット５０が螺嵌されている。 The fixing member 54 is formed by a first shaft portion 46 disposed on the shaft center 56 in the guide member 45 and a pipe member 53 detachably fitted on the middle portion of the first shaft portion 46. And an adjustment nut 50 for adjusting the axial position of the second shaft portion 47 is screwed into the first shaft portion 46 outside the second shaft portion 47. .

そして、該調整ナット５０と、前記ガイド部材４５の外端開口を閉塞するリング状の蓋体５８との間には、前記第一軸部４６に軸方向圧縮状態で巻回されたバネ４８が介設されており、前記第二軸部４７と、該第二軸部４７よりも内側で突出する第一軸部４６の部分（以下、「軸先部」とする）４６ａとが、前記支持孔４２ａ・４５ａに向かって常時付勢されている。前記蓋体５８のリング中央からは、第一軸部４６が外方に突出され、該第一軸部４６の外端には、略球状のノブ４９が外嵌固定されている。 A spring 48 wound around the first shaft portion 46 in an axially compressed state is interposed between the adjustment nut 50 and a ring-shaped lid body 58 that closes the outer end opening of the guide member 45. The second shaft portion 47 and the portion 46a of the first shaft portion 46 (hereinafter referred to as “shaft tip portion”) 46a projecting inward from the second shaft portion 47 are interposed between the second shaft portion 47 and the support shaft 46a. It is always biased toward the holes 42a and 45a. A first shaft portion 46 protrudes outward from the center of the ring of the lid body 58, and a substantially spherical knob 49 is fitted and fixed to the outer end of the first shaft portion 46.

更に、前記第一軸部４６は、前記第二調整孔群５２の各調整孔５２ａ・５２ｂよりも小径であって挿通可能に形成されると共に、第二軸部４７は、前記第一軸部４６よりも大径であって第二調整孔群５２の各調整孔５２ａ・５２ｂには挿通不能であるが、第一調整孔群５１の各注入深さ調整孔５１ａ・５１ｂ・５１ｃ・５１ｄよりも小径であって挿通可能に形成されている。 Further, the first shaft portion 46 has a smaller diameter than each of the adjustment holes 52a and 52b of the second adjustment hole group 52 and can be inserted, and the second shaft portion 47 has the first shaft portion. 46, and cannot be inserted into the adjustment holes 52a and 52b of the second adjustment hole group 52, but from the injection depth adjustment holes 51a, 51b, 51c, and 51d of the first adjustment hole group 51. The small diameter is also formed so that it can be inserted.

以上のようにして構成される伸縮機構１５Ｌにおいて、前記伸縮長さＬを変更する際は、例えば、支持具４４に固定する薬液注入爪１６Ｌの調整孔を、第一調整孔群５１の注入深さ調整孔５１ｄから第二調整孔群５２の装着調整孔５２ｂに移動して伸縮長さＬを短くする際は、その作業は次のようにして行われる。 In the expansion / contraction mechanism 15 L configured as described above, when changing the expansion / contraction length L, for example, the adjustment hole of the chemical solution injection claw 16 L fixed to the support tool 44 is used as the injection depth of the first adjustment hole group 51. When moving from the height adjusting hole 51d to the mounting adjusting hole 52b of the second adjusting hole group 52 to shorten the expansion / contraction length L, the operation is performed as follows.

図５（ａ）に示すように、支持孔４２ａ・４５ａ間に注入深さ調整孔５１ｄが位置する場合は、バネ４８の付勢力によって第二軸部４７が内方に付勢され、該第二軸部４７が外支持孔４５ａから注入深さ調整孔５１ａ、内支持孔４２ａにかけて挿通されることにより、固定具５４によって注入深さ調整孔５１ｄが支持孔４２ａ・４５ａの位置に係止される。なお、第二軸部４７の内方への移動量は、ノブ４９の内端が蓋体５８に当接することによって規制され、固定具５４の抜け落ちを防止している。 As shown in FIG. 5A, when the injection depth adjustment hole 51d is positioned between the support holes 42a and 45a, the second shaft portion 47 is urged inward by the urging force of the spring 48, and the first The biaxial portion 47 is inserted from the outer support hole 45a through the injection depth adjustment hole 51a and the inner support hole 42a, whereby the injection depth adjustment hole 51d is locked at the position of the support holes 42a and 45a by the fixture 54. The Note that the amount of inward movement of the second shaft portion 47 is regulated by the inner end of the knob 49 coming into contact with the lid body 58 to prevent the fixture 54 from falling off.

そして、図５（ｂ）に示すように、前記ノブ４９を把持し、バネ４８の付勢力に抗して、両軸部４６・４７をガイド部材４５内に引き出した状態で、装着調整孔５２ｂが支持孔４２ａ・４５ａ間に位置するまで、薬液注入爪１６Ｌを上方に引き上げる。 Then, as shown in FIG. 5B, the mounting adjustment hole 52b is held in a state where the knob 49 is gripped and both shaft portions 46 and 47 are pulled out into the guide member 45 against the biasing force of the spring 48. Until the position between the support holes 42a and 45a is raised.

その後、図５（ｃ）に示すように、前記ノブ４９を離すと、バネ４８の付勢力によって軸部５５が支持孔４２ａ・４５ａに向かって押動されるが、第二軸部４７が装着調整孔５２ｂに挿通不能であるため、前記軸先部４６ａのみが装着調整孔５２ｂに挿通され、伸縮長さＬが短い状態で、固定具５４によって装着調整孔５２ｂが外支持孔４５ａの位置に係止される。以上の構成は、右の伸縮機構１５Ｒについても同様である。 Thereafter, as shown in FIG. 5C, when the knob 49 is released, the shaft portion 55 is pushed toward the support holes 42a and 45a by the biasing force of the spring 48, but the second shaft portion 47 is attached. Since the adjustment hole 52b cannot be inserted, only the shaft tip portion 46a is inserted into the attachment adjustment hole 52b, and the attachment adjustment hole 52b is moved to the position of the outer support hole 45a by the fixture 54 in a state where the length L is short. Locked. The above configuration is the same for the right telescopic mechanism 15R.

次に、この伸縮機構１５Ｌ・１５Ｒを使って、歩行型管理機２への土壌消毒機１の装着を行う場合について、図１、図２、図４により説明する。
前述のようにして、装着調整孔５２ｂを支持具４４の外支持孔４５ａの位置に係止すると、支持具４４から下方に突出した薬液注入爪１６Ｌ・１６Ｒの先部と接地輪２８Ｌ・２８Ｒとによって、土壌消毒機１の機体が前後で安定支持されると共に、前記前ステー１３が地面５７に対して垂直となり、かつ該前ステー１３上部に設けた装着部２２が歩行型管理機２のヒッチ１１と略同じ高さとなるように、装着調整孔５２ｂの位置が設定されている。 Next, the case where the soil disinfection machine 1 is attached to the walking type management machine 2 using the expansion / contraction mechanisms 15L and 15R will be described with reference to FIGS.
As described above, when the mounting adjustment hole 52b is locked to the position of the outer support hole 45a of the support tool 44, the tip portions of the chemical solution injection claws 16L and 16R projecting downward from the support tool 44 and the grounding rings 28L and 28R Thus, the body of the soil disinfecting machine 1 is stably supported in the front and rear, the front stay 13 is perpendicular to the ground 57, and the mounting portion 22 provided on the front stay 13 is a hitch of the walking type management machine 2. The position of the mounting adjustment hole 52 b is set so as to be substantially the same height as 11.

ここで、前記装着部２２は、前記前ステー１３の上部前面にボルト６０によって締結した矩形状の基板６１と、該基板６１の左右略中央部の前面より前方に突出すると共に前ステー１３に平行な軸心を有するボス部６２ａを設けた係止体６２と、前記基板６１の左右端部より前方に突出する左右の位置決めボルト６３・６３とから構成されると共に、該位置決めボルト６３・６３は、その基部に設けた調整ナット６４・６４により伸縮長さを調整可能としている。このため、前ステー１３を地面５７に対し垂直に設定すると、前記ボス部６２ａの軸心上に設けたピン孔６２ｂも地面５７に対して垂直に設定することができる。 Here, the mounting portion 22 is a rectangular substrate 61 fastened to the upper front surface of the front stay 13 by a bolt 60, and protrudes forward from the front surface of a substantially central portion on the left and right sides of the substrate 61 and is parallel to the front stay 13. The locking body 62 is provided with a boss portion 62a having a central axis, and left and right positioning bolts 63 and 63 projecting forward from the left and right end portions of the substrate 61. The extension / contraction length can be adjusted by adjusting nuts 64 and 64 provided at the base. For this reason, when the front stay 13 is set perpendicular to the ground 57, the pin hole 62 b provided on the axial center of the boss portion 62 a can also be set perpendicular to the ground 57.

一方、歩行型管理機２のヒッチ１１の上下板部１１ａ・１１ｂには、上下方向に貫通するヒッチ孔１１ａ１、１１ｂ１がそれぞれ穿孔され、該ヒッチ孔１１ａ１、１１ｂ１の間に、前記ピン孔６２ｂが配置されるようにしている。 On the other hand, hitch holes 11a1 and 11b1 penetrating in the vertical direction are formed in the upper and lower plate portions 11a and 11b of the hitch 11 of the walking type management machine 2, and the pin hole 62b is formed between the hitch holes 11a1 and 11b1. It is arranged.

これにより、装着調整孔５２ｂを外支持孔４５ａの位置に係止して薬液注入爪１６Ｌ・１６Ｒを下方に突出させ、薬液注入爪１６Ｌ・１６Ｒと接地輪２８Ｌ・２８Ｒとによって土壌消毒機１の機体を支持した状態で、該土壌消毒機１に向かって、前方の歩行型管理機２を後進させると、該歩行型管理機２のヒッチ１１の前板部１１ｃ後面に、装着部２２の位置決めボルト６３・６３の先端が当接し、該当接位置において、前記ヒッチ孔１１ａ１、１１ｂ１の間に装着部２２のピン孔６２ｂを位置させることができる。そして、ヒッチ孔１１ａ１からピン孔６２ｂ、ヒッチ孔１１ｂ１にかけて、連結ピン６５を上から下方に挿通し、その下端を係止ピン６６で抜け止めすることにより、歩行型管理機２に土壌消毒機１を着脱可能に装着することができる。 As a result, the mounting adjustment hole 52b is locked at the position of the outer support hole 45a, and the chemical solution injection claws 16L and 16R are protruded downward. When the front walking type management machine 2 is moved backward toward the soil disinfecting machine 1 with the body supported, the mounting part 22 is positioned on the rear surface of the front plate part 11c of the hitch 11 of the walking type management machine 2. The tips of the bolts 63 and 63 abut, and the pin hole 62b of the mounting portion 22 can be positioned between the hitch holes 11a1 and 11b1 at the corresponding contact position. Then, the connecting pin 65 is inserted from the top to the bottom through the hitch hole 11a1 to the pin hole 62b and the hitch hole 11b1, and the lower end thereof is prevented from being detached by the locking pin 66, so that the walking disinfection machine 1 is connected to the walking disinfection machine 1. Can be detachably mounted.

次に、前記伸縮機構１５Ｌ・１５Ｒを使って、薬液注入爪１６Ｌ・１６Ｒからの吐出液の計量を行う場合について、図２、図４乃至図７により説明する。
図２、図４乃至図６に示すように、前述のようにして土壌消毒機１を歩行型管理機２に装着した後、右の薬液注入爪１６Ｒはそのままで、左の薬液注入爪１６Ｌの吐出量調整孔５２ａを外支持孔４５ａの位置に係止すると、薬液注入爪１６Ｌが支持具４４から更に下方に突出し、その先部により、歩行型管理機２の駆動輪６を支点にして接地輪２８Ｌ・２８Ｒが前方に回動し、地面５７から上昇して所定の高さＨに設定保持される。 Next, the case of measuring the amount of liquid discharged from the chemical liquid injection claws 16L and 16R using the expansion and contraction mechanisms 15L and 15R will be described with reference to FIGS.
As shown in FIG. 2 and FIG. 4 to FIG. 6, after the soil disinfecting machine 1 is mounted on the walking type management machine 2 as described above, the right chemical solution injection claw 16R is left as it is, and the left chemical solution injection claw 16L When the discharge amount adjusting hole 52a is locked at the position of the outer support hole 45a, the chemical solution injection claw 16L protrudes further downward from the support tool 44, and the tip part thereof makes contact with the drive wheel 6 of the walking type management machine 2 as a fulcrum. The wheels 28L and 28R rotate forward, and are lifted from the ground 57 and set and held at a predetermined height H.

これにより、作業者は、一方の手で、薬液注入爪１６Ｒにおける薬液ノズル４１の吐出口４１ａの下にメスシリンダ等の計量容器６７を保持したまま、もう一方の手で、接地輪２８Ｌ・２８Ｒを回動させてポンプ駆動機構２４Ｒを作動させ、第二薬液ポンプ２１Ｒを駆動して吐出口４１ａから液を吐出させ、前記計量容器６７内に吐出液を受けて計量を行うことができる。 Thereby, the operator holds the measuring container 67 such as a graduated cylinder under the discharge port 41a of the chemical liquid nozzle 41 in the chemical liquid injection claw 16R with one hand, and the grounding rings 28L and 28R with the other hand. Is rotated to operate the pump drive mechanism 24R, the second chemical liquid pump 21R is driven to discharge the liquid from the discharge port 41a, and the discharge liquid is received in the measuring container 67 for measurement.

続いて、第一薬液ポンプ２１Ｌからの吐出液を計量するには、右の薬液注入爪１６Ｒの吐出量調整孔５２ａを外支持孔４５ａの位置に係止して、薬液注入爪１６Ｒを支持具４４から更に下方に突出させた後、左の薬液注入爪１６Ｌは、逆に、上方に引き上げて装着調整孔５２ｂを外支持孔４５ａの位置に係止する。 Subsequently, in order to measure the discharge liquid from the first chemical liquid pump 21L, the discharge amount adjustment hole 52a of the right chemical liquid injection claw 16R is locked at the position of the outer support hole 45a, and the chemical liquid injection claw 16R is supported by the support tool. After projecting further downward from 44, the left liquid medicine injection claw 16L, conversely, pulls upward to lock the mounting adjustment hole 52b at the position of the outer support hole 45a.

これにより、作業者は、薬液注入爪１６Ｌの吐出口４１ａの下に、計量容器６７を一方の手で保持したまま、もう一方の手で接地輪２８Ｌ・２８Ｒを回動させてポンプ駆動機構２４Ｌを作動させ、第一薬液ポンプ２１Ｌを駆動して計量を行うことができる。 As a result, the operator rotates the grounding rings 28L and 28R with the other hand while holding the measuring container 67 under the discharge port 41a of the liquid injection claw 16L with the other hand, thereby driving the pump drive mechanism 24L. And the first chemical pump 21L can be driven to perform measurement.

なお、図４、図７に示すように、前記第一調整孔群５１の注入深さ調整孔５１ｄを支持孔４２ａ・４５ａの位置に係止した場合には、薬液注入爪１６Ｌ・１６Ｒが支持具４４から著しく下方に突出し、その先部により、歩行型管理機２の駆動輪６を支点にして接地輪２８Ｌ・２８Ｒが大きく前方に回動することとなる。このため、フロートタイプの薬液流確認計３３の流路が水平に近づいて該流路が閉塞されたり、歩行型管理機２の前端に固設した重し７０によって土壌消毒機１が前方に転倒する可能性が生じる。 4 and 7, when the injection depth adjustment hole 51d of the first adjustment hole group 51 is locked at the positions of the support holes 42a and 45a, the chemical solution injection claws 16L and 16R are supported. The grounding wheels 28L and 28R are largely rotated forward by using the driving wheel 6 of the walking type management machine 2 as a fulcrum. For this reason, the flow path of the float type chemical flow confirmation meter 33 approaches the horizontal and the flow path is blocked, or the soil disinfecting machine 1 falls forward by the weight 70 fixed to the front end of the walking type management machine 2. The possibility to do.

すなわち、以上のように、走行車両である歩行型管理機２に装着され、薬液を土壌に注入する複数の薬液注入爪１６Ｌ・１６Ｒと、該薬液注入爪１６Ｌ・１６Ｒに薬液を圧送する複数の往復駆動型の薬液ポンプ２１Ｌ・２１Ｒと、該薬液ポンプ２１Ｌ・２１Ｒを駆動する接地輪２８Ｌ・２８Ｒとを備えた土壌消毒機１において、前記薬液注入爪１６Ｌ・１６Ｒは、機体に設けた筒状の支持具４４内を上下摺動し、該支持具４４の支持孔４２ａ・４５ａから前記薬液注入爪１６Ｌ・１６Ｒの調整孔５１ａ・５１ｂ・５１ｃ・５１ｄ・５２ａ・５２ｂにかけて固定具５４を挿通固定することにより、所定の伸縮長さＬに設定する伸縮機構１５Ｌ・１５Ｒを有すると共に、前記調整孔５１ａ・５１ｂ・５１ｃ・５１ｄ・５２ａ・５２ｂは、前記薬液注入爪１６Ｌ・１６Ｒを土壌中に差し込んで薬液を注入する際の注入深さを設定する第一調整孔群５１と、薬液注入爪１６Ｌ・１６Ｒの先端を地面５７に当接させて機体の姿勢制御を行う第二調整孔群５２とから成り、該第二調整孔群５２は、前記第一調整孔群５１よりも下方にあって、第一調整孔群５１よりも小径の調整孔５２ａ・５２ｂで構成したので、固定具５４により、第二調整孔群５２の調整孔５２ａ・５２ｂを外支持孔４５ａの位置に係止して薬液注入爪１６Ｌ・１６Ｒを伸縮させ、土壌消毒機１の機体を所定の姿勢に自在に制御することができ、例えば、歩行型管理機２への土壌消毒機１の着脱時において、土壌消毒機１を持ち上げたり傾倒させたりして、その被係止部である装着部２２を歩行型管理機２の係止部であるヒッチ１１との着脱可能位置まで移動して保持しつつ、該装着部２２を連結ピン６５やボルト６０等によってヒッチ１１に着脱させる必要がなくなり、一人単独で着脱を行うのに、装着部２２を着脱可能位置に設定保持するための専用スタンド等が不要となる。このため、着脱時に必要な治具が減って作業コストを低減できると共に、治具の準備・収納にかかる分だけ着脱作業の作業時間を短縮できる。更に、吐出量調整時においても、歩行型管理機２に土壌消毒機１を装着したままで該土壌消毒機１ごと接地輪２８Ｌ・２８Ｒを地面５７から浮上させてから手回しで回動しつつ、吐出液を採取して吐出量を計量する必要がなくなり、一人単独での吐出量調整が容易となって共同作業者が不要となる。このため、人件費が減って作業コストを低減できると共に、共同作業の場合に比べてタイミング合わせ等が容易となって計測精度が向上する。加えて、このような第二調整孔群５２の各調整孔５２ａ・５２ｂの径を小さくするので、該調整孔５２ａ・５２ｂの周囲部分の部材強度を高く設定することができ、消毒作業中に土壌面下で砕土流から受ける衝撃力により各調整孔５２ａ・５２ｂを起点に薬液注入爪１６Ｌ・１６Ｒが折損するのを、有効に防止できる。 That is, as described above, the plurality of chemical solution injection claws 16L and 16R that are attached to the walking type management machine 2 that is a traveling vehicle and injects the chemical solution into the soil, and the plurality of chemical solutions that are pumped to the chemical solution injection claws 16L and 16R In the soil disinfecting machine 1 having reciprocating drive type chemical liquid pumps 21L and 21R and grounding wheels 28L and 28R for driving the chemical liquid pumps 21L and 21R, the chemical liquid injection claws 16L and 16R are formed in a cylindrical shape provided in the machine body. The support tool 44 is slid up and down, and the fixing tool 54 is inserted and fixed from the support holes 42a and 45a of the support tool 44 to the adjustment holes 51a, 51b, 51c, 51d, 52a, and 52b of the drug solution injection claws 16L and 16R. Thus, the expansion / contraction mechanism 15L / 15R is set to a predetermined expansion / contraction length L, and the adjustment holes 51a / 51b / 51c / 51d / 52a / 52b The first adjustment hole group 51 for setting the injection depth when the nail 16L, 16R is inserted into the soil and injecting the chemical solution, and the tip of the chemical injection nail 16L, 16R are brought into contact with the ground 57 and the attitude of the aircraft A second adjustment hole group 52 that performs control, and the second adjustment hole group 52 is located below the first adjustment hole group 51 and has an adjustment hole 52a that is smaller in diameter than the first adjustment hole group 51. 52b, the fixture 54 is used to lock the adjustment holes 52a and 52b of the second adjustment hole group 52 to the position of the outer support hole 45a to expand and contract the chemical injection claws 16L and 16R. The airframe can be freely controlled to a predetermined posture. For example, when the soil disinfecting machine 1 is attached to or detached from the walking management machine 2, the soil disinfecting machine 1 is lifted or tilted, and its locked portion The mounting portion 22 is a hit portion that is a locking portion of the walking-type management machine 2. It is no longer necessary to attach / detach the mounting part 22 to / from the hitch 11 with the connecting pin 65, the bolt 60, etc. A dedicated stand or the like for setting and holding at a possible position becomes unnecessary. For this reason, the number of jigs required for attachment / detachment can be reduced, and the work cost can be reduced, and the work time for the attachment / detachment work can be shortened by the amount required for the preparation / storage of the jig. Further, even when the discharge amount is adjusted, the grounding wheel 28L / 28R is lifted from the ground 57 together with the soil disinfecting machine 1 while the soil disinfecting machine 1 is attached to the walking type management machine 2, and is rotated by hand. It is no longer necessary to collect the discharge liquid and measure the discharge amount, making it easy to adjust the discharge amount by one person and eliminating the need for a collaborator. For this reason, the labor cost can be reduced and the work cost can be reduced, and the timing adjustment can be facilitated and the measurement accuracy can be improved as compared with the case of the joint work. In addition, since the diameters of the respective adjustment holes 52a and 52b of the second adjustment hole group 52 are reduced, the member strength around the adjustment holes 52a and 52b can be set high, so that the disinfection operation can be performed. It is possible to effectively prevent the chemical liquid injection claws 16L and 16R from breaking from the adjustment holes 52a and 52b due to the impact force received from the crushed soil flow under the soil surface.

更に、前記第二調整孔群５２は、前記薬液注入爪１６Ｌ・１６Ｒを下方に突出し、該薬液注入爪１６Ｌ・１６Ｒと前記接地輪２８Ｌ・２８Ｒとによって機体を支持することにより、前記歩行型管理機２のヒッチ１１との着脱可能位置に土壌消毒機１の装着部２２を設定し、歩行型管理機２への土壌消毒機１の装着を行う装着調整孔５２ｂと、該装着後に少なくとも一つの薬液注入爪１６Ｌ（または１６Ｒ）を下方に突出し、前記歩行型管理機２を支点にして接地輪２８Ｌ・２８Ｒを地面５７から浮上支持しつつ、該接地輪２８Ｌ・２８Ｒを回動して他の薬液注入爪１６Ｒ（または１６Ｌ）からの吐出液の計量を行う吐出量調整孔５２ａとを有するので、歩行型管理機２への土壌消毒機１の装着作業と薬液注入爪１６Ｌ・１６Ｒからの吐出液の吐出量調整作業とを、薬液注入爪１６Ｌ・１６Ｒの伸縮による機体の姿勢制御だけで行うことができ、消毒作業の前準備にかかる時間や手間を省いて、作業効率の大幅な向上を図ることができる。 Further, the second adjustment hole group 52 projects the medicinal solution injection claws 16L and 16R downward, and supports the aircraft by the medicinal solution injection claws 16L and 16R and the grounding wheels 28L and 28R. The mounting part 22 of the soil disinfecting machine 1 is set at a position where it can be attached to and detached from the hitch 11 of the machine 2, and the mounting adjusting hole 52b for mounting the soil disinfecting machine 1 to the walking management machine 2 is provided, and at least one after the mounting The medicinal solution injection claw 16L (or 16R) protrudes downward, and the grounding wheels 28L and 28R are lifted and supported from the ground 57 with the walking type management machine 2 as a fulcrum, while the grounding wheels 28L and 28R are rotated to other Since there is a discharge amount adjusting hole 52a for measuring the discharge liquid from the chemical liquid injection claw 16R (or 16L), the work of mounting the soil disinfecting machine 1 on the walking type management machine 2 and the discharge from the chemical liquid injection claws 16L and 16R Liquid The amount adjustment work can be performed only by controlling the attitude of the aircraft by extending and retracting the chemical injection claws 16L and 16R, and the work efficiency can be greatly improved by eliminating the time and effort required for preparation before disinfection work. Can do.

加えて、前記固定具５４は、前記支持具４４に設けた筒状のガイド部材４５内を移動し第二調整孔群５２の各調整孔５２ａ・５２ｂに挿通可能な第一軸部４６と、該第一軸部４６よりも大径で同一軸心上に形成され、前記ガイド部材４５内を移動して第二調整孔群５２の各調整孔５２ａ・５２ｂには挿通不能で第一調整孔群５１の各調整孔５１ａ・５１ｂ・５１ｃ・５１ｄには挿通可能な第二軸部４７と、前記両軸部４６・４７を支持孔４２ａ・４５ａに向かって常時付勢する付勢体であるバネ４８と、前記両軸部４６・４７を支持孔４２ａ・４５ａに向かって押し引き操作する把持部であるノブ４９とを備えるので、単一の固定具５４によって、両調整孔群５１・５２の各調整孔５１ａ・５１ｂ・５１ｃ・５１ｄ・５２ａ・５２ｂを支持孔４２ａ・４５ａに固定することができ、部品点数が少なくて済み、部品コストの低減とメンテナンス性の向上を図ることができる。 In addition, the fixing tool 54 moves in a cylindrical guide member 45 provided in the support tool 44 and can be inserted into the adjustment holes 52a and 52b of the second adjustment hole group 52; The first adjustment hole is larger in diameter than the first shaft portion 46 and is formed on the same axis. The first adjustment hole cannot move through the guide member 45 and cannot be inserted into the adjustment holes 52a and 52b of the second adjustment hole group 52. A second shaft portion 47 that can be inserted into each of the adjustment holes 51a, 51b, 51c, and 51d of the group 51, and a biasing body that constantly biases the shaft portions 46 and 47 toward the support holes 42a and 45a. Since the spring 48 and the knob 49, which is a gripping part that pushes and pulls the shafts 46 and 47 toward the support holes 42a and 45a, are provided, both the adjustment hole groups 51 and 52 are formed by a single fixture 54. Each adjustment hole 51a, 51b, 51c, 51d, 52a, 52b 2a · 45a to be fixed, requires less parts, it is possible to improve the component cost and maintainability.

更に、前記第一軸部４６の途中部に筒状のパイプ部材５３を着脱可能に外嵌することにより、該途中部に前記第二軸部４７を形成するので、単一の部材を加工して両軸部４６・４７を形成する必要がなく、加工コストが低減できると共に、メンテナンス時には損耗した軸部の方だけ交換すれば済み、メンテナンスコストを低減できる。 Furthermore, since the second shaft portion 47 is formed in the middle portion of the first shaft portion 46 by detachably fitting the cylindrical pipe member 53 to the middle portion, a single member is processed. Thus, it is not necessary to form both shaft portions 46 and 47, so that the machining cost can be reduced, and only the worn shaft portion is replaced at the time of maintenance, so that the maintenance cost can be reduced.

次に、薬液注入爪１６Ｌ・１６Ｒからの吐出液の計量を行う際に動作する前記薬液ポンプ２１Ｌ・２１Ｒ、ポンプ駆動機構２４Ｌ・２４Ｒ、及び吐出量調整機構２６について、図２乃至図４、図８により説明する。 Next, the chemical pumps 21L and 21R, the pump drive mechanisms 24L and 24R, and the discharge amount adjusting mechanism 26 that operate when measuring the discharge liquid from the chemical liquid injection claws 16L and 16R will be described with reference to FIGS. 8 will be described.

前記第一薬液ポンプ２１Ｌにおいては、ダイアフラム７１Ｌが、弁取付部材７２とダイアフラム取付部材７３とによって上下から挟持固定され、このうちの弁取付部材７２からは、ダイアフラム７１Ｌ内に連通する吸入ポート７４と吐出ポート７５とが上方に突設され、該吸入ポート７４と吐出ポート７５とは、それぞれ前記吸入ホース３５と吐出ホース３６とに接続されている。第二薬液ポンプ２１Ｒにおいても同様である。なお、該薬液ポンプ２１Ｌ・２１Ｒは、本実施例では、往復駆動型のダイアフラム式ポンプであるが、ダイアフラム式ではなくプランジャ式でもよく、往復駆動型であれば特には限定されない。 In the first chemical pump 21L, a diaphragm 71L is sandwiched and fixed from above and below by a valve mounting member 72 and a diaphragm mounting member 73, and the valve mounting member 72 includes a suction port 74 communicating with the diaphragm 71L. A discharge port 75 projects upward, and the suction port 74 and the discharge port 75 are connected to the suction hose 35 and the discharge hose 36, respectively. The same applies to the second chemical pump 21R. In this embodiment, the chemical liquid pumps 21L and 21R are reciprocating diaphragm type pumps, but they may be plunger type instead of diaphragm type, and are not particularly limited as long as they are reciprocating type.

このような第一薬液ポンプ２１Ｌの下方に、前記ポンプ駆動機構２４Ｌが設けられている。
該ポンプ駆動機構２４Ｌにおいては、前記ダイアフラム７１Ｌの中央下部から、往復移動体である連結ロッド７６Ｌが垂設され、該連結ロッド７６Ｌの下部が、ポンプ駆動ケース７７内に挿入される。該連結ロッド７６Ｌの下端は、ピン７８によりポンプレバー７９Ｌの中途部に回動自在に連結されると共に、該ピン７８には、カムフォロワー８０Ｌも設けられている。 The pump drive mechanism 24L is provided below the first chemical pump 21L.
In the pump drive mechanism 24L, a connecting rod 76L that is a reciprocating body is suspended from the lower center of the diaphragm 71L, and the lower portion of the connecting rod 76L is inserted into the pump drive case 77. The lower end of the connecting rod 76L is pivotally connected to a midway part of the pump lever 79L by a pin 78, and the pin 78 is also provided with a cam follower 80L.

そして、前記ポンプレバー７９Ｌの前部は、ポンプ駆動ケース７７内の両側に横架されたレバー軸８１に軸支されており、該レバー軸８１を支点としてポンプレバー７９Ｌを上下回動可能としている。一方、ポンプレバー７９Ｌの後部は、ポンプ駆動ケース７７の後面に設けた開口部から後方に突出されている。更に、前記第二サブフレーム２３より下方の連結ロッド７６Ｌの外周には、バネ９５が軸方向圧縮状態で巻回されており、該バネ９５の付勢力により、前記接地輪軸２７に中心を固設した第一カム９２に対して、カムフォロワー８０Ｌを付勢状態で当接できるようにしている。ポンプ駆動機構２４Ｒにおいても同様である。 The front portion of the pump lever 79L is pivotally supported by a lever shaft 81 horizontally mounted on both sides in the pump drive case 77, and the pump lever 79L can be turned up and down with the lever shaft 81 as a fulcrum. . On the other hand, the rear portion of the pump lever 79L protrudes rearward from an opening provided on the rear surface of the pump drive case 77. Further, a spring 95 is wound around the outer periphery of the connecting rod 76L below the second subframe 23 in an axially compressed state, and the center of the grounding wheel shaft 27 is fixed by the biasing force of the spring 95. The cam follower 80L can be brought into contact with the first cam 92 in the biased state. The same applies to the pump drive mechanism 24R.

これにより、接地輪２８Ｌ・２８Ｒを手動で回動すると、接地輪軸２７を介して、第一薬液ポンプ２１Ｌの第一カム９２と、第二薬液ポンプ２１Ｒの第二カム９３が回転駆動され、該カム９２・９３の外周に当接したカムフォロワー８０Ｌ・８０Ｒが上下動し、連結ロッド７６Ｌ・７６Ｒを介してダイアフラム７１Ｌ・７１Ｒを上下動させることができ、この往復駆動によって、液を給排して前記薬液ノズル４１・４１の吐出口４１ａ・４１ａまで圧送できるようにしている。 Accordingly, when the grounding wheels 28L and 28R are manually rotated, the first cam 92 of the first chemical liquid pump 21L and the second cam 93 of the second chemical liquid pump 21R are rotationally driven via the grounding wheel shaft 27, The cam followers 80L and 80R that are in contact with the outer periphery of the cams 92 and 93 move up and down, and the diaphragms 71L and 71R can be moved up and down via the connecting rods 76L and 76R. Thus, it can be pumped to the discharge ports 41a and 41a of the chemical nozzles 41 and 41.

また、該ポンプ駆動機構２４Ｌ・２４Ｒの後方に、前記吐出量調整機構２６が設けられている。
該吐出量調整機構２６においては、前記ポンプレバー７９Ｌの後端に、レバーハンドル８２Ｌが形成され、該レバーハンドル８２Ｌを上下方向に回動させることにより、第一薬液ポンプ２１Ｌを手動で駆動し、作業前の手動によるエア抜きを可能としている。 Further, the discharge amount adjusting mechanism 26 is provided behind the pump drive mechanisms 24L and 24R.
In the discharge amount adjusting mechanism 26, a lever handle 82L is formed at the rear end of the pump lever 79L, and the first chemical pump 21L is manually driven by rotating the lever handle 82L in the vertical direction. Allows manual air venting before work.

更に、ポンプレバー７９Ｌの後方には、制限板８３が横設され、該制限板８３の左右方向略中央部には、調節ロッド８４が上下方向に螺挿され、該調節ロッド８４は、前記ポンプ駆動ケース７７の後方に設けた側面視コ字状の制限板取付部材８５の上下面を貫通するように設けられている。 Further, a restriction plate 83 is provided laterally behind the pump lever 79L, and an adjustment rod 84 is screwed up and down at a substantially central portion in the left-right direction of the restriction plate 83. The adjustment rod 84 is connected to the pump lever 79L. It is provided so as to penetrate the upper and lower surfaces of the restriction plate mounting member 85 having a U-shape in side view provided behind the drive case 77.

そして、該調節ロッド８４の下部には、ロックナット８６と締付ナット８７が上下に螺嵌される。一方、該調節ロッド８４の上部は、制限板取付部材８５の上面に係止されると共に、調節ロッド８４の上端には、把手８８が設けられ、該把手８８と前記制限板取付部材８５の上面との間の調節ロッド８４の外周には、バネ８９が軸方向圧縮状態で巻回されており、該バネ８９の付勢力により、調節ロッド８４は常に上方へ付勢されている。 A lock nut 86 and a tightening nut 87 are screwed up and down at the lower part of the adjustment rod 84. On the other hand, the upper portion of the adjustment rod 84 is locked to the upper surface of the restriction plate mounting member 85, and a handle 88 is provided at the upper end of the adjustment rod 84, and the upper surface of the handle 88 and the restriction plate mounting member 85 is provided. A spring 89 is wound around the outer periphery of the adjustment rod 84 in a compressed state in the axial direction, and the adjustment rod 84 is always urged upward by the urging force of the spring 89.

更に、前記制限板８３の左右両側には、左右の調整ボルト９０Ｌ・９０Ｒが螺挿され、両調整ボルト９０Ｌ・９０Ｒの上面に、それぞれ、前記ポンプ駆動機構２４Ｌ・２４Ｒの各レバーハンドル８２Ｌ・８２Ｒに形成された左右の突起部９１Ｌ・９１Ｒが当接されている。 Furthermore, left and right adjustment bolts 90L and 90R are screwed into the left and right sides of the limiting plate 83, and the lever handles 82L and 82R of the pump drive mechanisms 24L and 24R are respectively mounted on the upper surfaces of the adjustment bolts 90L and 90R. The left and right projecting portions 91L and 91R formed in contact with each other are in contact with each other.

これにより、把手８８を握って調節ロッド８４を所定方向に回転させて制限板８３を上方に移動させると、左右のポンプレバー７９Ｌ・７９Ｒが、レバー軸８１・８１を支点とし、それぞれ調整ボルト９０Ｌ・９０Ｒを介して上方に回動され、薬液ポンプ２１Ｌ・２１Ｒの下死点も上方に移動する。これにより、ストロークが短くなって、薬液ポンプ２１Ｌ・２１Ｒの吐出量を低減させることができる。逆に、把手８８を前記所定方向とは反対方向に回転させて制限板８３を下方に移動させると、吐出量を増加させることができ、制限板８３の上下位置を調節することによって、吐出量を自在に調整することができる。 As a result, when the grip 88 is gripped and the adjusting rod 84 is rotated in a predetermined direction to move the restricting plate 83 upward, the left and right pump levers 79L and 79R use the lever shafts 81 and 81 as fulcrums and the adjustment bolts 90L. -It is rotated upward via 90R, and the bottom dead center of the chemical pumps 21L and 21R also moves upward. Thereby, a stroke becomes short and the discharge amount of chemical | medical solution pump 21L * 21R can be reduced. Conversely, when the handle 88 is rotated in the direction opposite to the predetermined direction and the restriction plate 83 is moved downward, the discharge amount can be increased. By adjusting the vertical position of the restriction plate 83, the discharge amount is increased. Can be adjusted freely.

更に、本発明のように、第一薬液ポンプ２１Ｌからの吐出量と第二薬液ポンプ２１Ｒからの吐出量を別々に計量して調整可能な場合には、このような吐出量調整機構２６において、前記把手８８による大まかな調整の後、前記調整ボルト９０Ｌ・９０Ｒを別々に回転させることにより、吐出量を個々に微調整することができ、左右のダイアフラム７１Ｌ・７１Ｒの個々の特性等に起因する第一薬液ポンプ２１Ｌと第二薬液ポンプ２１Ｒからの吐出量の差違をなくすことができる。 Further, when the discharge amount from the first chemical pump 21L and the discharge amount from the second chemical pump 21R can be separately measured and adjusted as in the present invention, in such a discharge amount adjusting mechanism 26, After the rough adjustment by the handle 88, the adjusting bolts 90L and 90R are separately rotated to finely adjust the discharge amount individually, resulting from the individual characteristics of the left and right diaphragms 71L and 71R. A difference in discharge amount from the first chemical pump 21L and the second chemical pump 21R can be eliminated.

また、前記第一カム９２と第二カム９３とは同一形状に形成されると共に、このうちの第一カム９２は、基礎円９２ｂの外周に、４つの第一カム凸部９２ａが等間隔で形成され、同様にして、第二カム９３も、基礎円９３ｂの外周に、４つの第二カム凸部９３ａが等間隔で形成される。 The first cam 92 and the second cam 93 are formed in the same shape, and the first cam 92 includes four first cam projections 92a at equal intervals on the outer periphery of the basic circle 92b. Similarly, in the second cam 93, four second cam projections 93a are formed at equal intervals on the outer periphery of the base circle 93b.

そして、両カム９２・９３の中心を、前記接地輪軸２７の軸心に一致させると共に、前記基礎円９２ｂ・９３ｂを、軸心方向視で重複させる。一方、前記４つの第一カム凸部９２ａと４つの第二カム凸部９３ａとは、軸心方向視で重複しないよう、回転角度で略４５度ずらして配設する。 The centers of the cams 92 and 93 are made coincident with the axis of the grounding wheel shaft 27, and the basic circles 92b and 93b are overlapped when viewed in the axial direction. On the other hand, the four first cam protrusions 92a and the four second cam protrusions 93a are arranged with a rotation angle shifted by approximately 45 degrees so as not to overlap in the axial direction view.

この際、第一カム９２で隣接する第一カム凸部９２ａ・９２ａ間において、第一カム９２の基礎円９２ｂにカムフォロワー８０Ｌが接すると同時に、第二カム９３の基礎円９３ｂにカムフォロワー８０Ｒが接する、共通下死点９４が形成されるように、カム凸部９２ａ・９３ａやカムフォロワー８０Ｌ・８０Ｒの大きさ・形状が設定されている。第二カム９３においても同様である。 At this time, the cam follower 80L is in contact with the basic circle 92b of the first cam 92 between the first cam convex portions 92a and 92a adjacent by the first cam 92, and at the same time, the cam follower 80R is contacted with the basic circle 93b of the second cam 93. The size and shape of the cam protrusions 92a and 93a and the cam followers 80L and 80R are set so that a common bottom dead center 94 is formed. The same applies to the second cam 93.

ここで、第二カム９３において、カムフォロワー８０Ｒが第二カム凸部９３ａ上ある場合は、第二カム９３がカムフォロワー８０Ｒから受ける付勢力は、カムフォロワー８０Ｒが基礎円９３ｂ上にある場合よりも大きく、しかも第二カム９３の回転によって大きく変動する。このため、カムフォロワー８０Ｒが第二カム凸部９３ａ上にある場合は、第二カム９３に連動連結する接地輪２８Ｌ・２８Ｒに対して、第二カム９３から大きな変動抵抗が作用する。 Here, in the second cam 93, when the cam follower 80R is on the second cam convex portion 93a, the urging force that the second cam 93 receives from the cam follower 80R is greater than that when the cam follower 80R is on the basic circle 93b. And also fluctuates greatly with the rotation of the second cam 93. For this reason, when the cam follower 80 R is on the second cam convex portion 93 a, a large variation resistance acts from the second cam 93 on the grounding wheels 28 L and 28 R interlockingly connected to the second cam 93.

従って、第一カム９２で隣接する第一カム凸部９２ａ・９２ａ間に、前記共通下死点９４が全くない場合には、カムフォロワー８０Ｌが、隣接する第一カム凸部９２ａ・９２ａを移動する間、常に、第二カム９３からの変動抵抗が接地輪２８Ｌ・２８Ｒに作用されることとなり、接地輪２８Ｌ・２８Ｒを一定速度で滑らかに手回しすることが困難となる。 Therefore, when there is no common bottom dead center 94 between the first cam protrusions 92a and 92a adjacent to each other by the first cam 92, the cam follower 80L moves the adjacent first cam protrusions 92a and 92a. In the meantime, the variable resistance from the second cam 93 is always applied to the grounding wheels 28L and 28R, and it becomes difficult to manually rotate the grounding wheels 28L and 28R at a constant speed.

これに対し、共通下死点９４が一つでもあれば、第一カム凸部９２ａ・９２ａ間で接地輪２８Ｌ・２８Ｒが受ける変動抵抗を減らせる。しかも、接地輪２８Ｌ・２８Ｒの受ける変動抵抗が共通下死点９４で最小となることから、手にかかる負荷によって、手回し中でも各第一カム凸部９２ａの位置を正確に把握することができる。 On the other hand, if there is only one common bottom dead center 94, the variable resistance received by the grounding wheels 28L and 28R between the first cam protrusions 92a and 92a can be reduced. In addition, since the variable resistance received by the grounding wheels 28L and 28R is minimized at the common bottom dead center 94, the position of each first cam projection 92a can be accurately grasped by hand load even during manual rotation.

すなわち、前記薬液ポンプ２１Ｌ・２１Ｒは、ダイアフラム式ポンプであって、該薬液ポンプ２１Ｌ・２１Ｒを個々に作動させる複数のカム９２・９３を備え、該カム９２・９３は、前記接地輪２８Ｌ・２８Ｒと連動する共通のカム軸である接地輪軸２７に軸支されると共に、円盤状の基礎円９２ｂ・９３ｂの外周にカム凸部９２ａ・９３ａを有しており、各カム９２・９３間でカム凸部９２ａ・９３ａの位相をずらせると共に、各カム９２・９３の隣接するカム凸部９２ａ・９２ａ間、またはカム凸部９３ａ・９３ａ間には、全てのカム９２・９３で下死点が一致する共通下死点９４を少なくとも一箇所設けるので、吐出量調整時に接地輪２８Ｌ・２８Ｒを手回しする際、他のカム９３（または９２）に当接するカムフォロワー８０Ｒ（または８０Ｌ）から接地輪軸２７が受ける変動抵抗を小さくすることができ、大きな変動抵抗のせいで接地輪２８Ｌ・２８Ｒが動きにくくなったり、逆に、急回転してカムフォロワー８０Ｌ（または８０Ｒ）がカム９２（または９３）との間でスリップしたりすることを、十分に防止することができ、吐出速度が安定して計量精度が向上する。更に、前記共通下死点９４に達すると、接地輪を回している手にかかる負荷が小さくなることから、手回し中にカム凸部９２ａ・９３ａの位置を正確に把握することができ、１回転の途中で一個のカム凸部９２ａ・９３ａを越えたところで回転を止めて吐出液の計量を行うことも可能となり、吐出量調整作業にかかる時間を短縮できる。 That is, the chemical liquid pumps 21L and 21R are diaphragm pumps, and include a plurality of cams 92 and 93 for individually operating the chemical liquid pumps 21L and 21R, and the cams 92 and 93 include the grounding wheels 28L and 28R. Is supported by a grounding wheel shaft 27 that is a common camshaft that is linked to the camshaft, and has cam convex portions 92a and 93a on the outer periphery of disc-shaped basic circles 92b and 93b. The phase of the projections 92a and 93a is shifted, and the bottom dead center is set between all the cams 92 and 93 between the cam projections 92a and 92a adjacent to each cam 92 and 93 or between the cam projections 93a and 93a. Since at least one common bottom dead center 94 is provided, the cam follower 80R that contacts the other cam 93 (or 92) when the grounding wheels 28L and 28R are manually rotated during the adjustment of the discharge amount. 80L), the variation resistance received by the grounding wheel shaft 27 can be reduced. The large variation resistance makes the grounding wheels 28L and 28R difficult to move, or conversely, the cam follower 80L (or 80R) rotates suddenly. Slip between the cam 92 (or 93) can be sufficiently prevented, the discharge speed is stabilized, and the measurement accuracy is improved. Further, when the common bottom dead center 94 is reached, the load applied to the hand turning the grounding wheel is reduced, so that the positions of the cam projections 92a and 93a can be accurately grasped during the hand turning. In the middle of this, it is possible to stop the rotation at the point where one of the cam projections 92a and 93a is exceeded, and to measure the discharge liquid, thereby reducing the time required for the discharge amount adjustment work.

本発明は、走行車両に装着され、薬液を土壌に注入する複数の薬液注入爪と、該薬液注入爪に薬液を圧送する複数の往復駆動型の薬液ポンプと、該薬液ポンプを駆動する接地輪とを備える、全ての土壌消毒機に適用することができる。 The present invention includes a plurality of chemical solution injection claws that are attached to a traveling vehicle and inject chemical solution into soil, a plurality of reciprocating drive chemical pumps that pump the chemical solution to the chemical solution injection nails, and a grounding wheel that drives the chemical pump And can be applied to all soil disinfectors.

１土壌消毒機
２歩行型管理機（走行車両）
１１ヒッチ
１５Ｌ・１５Ｒ伸縮機構
１６Ｌ・１６Ｒ薬液注入爪
２１Ｌ・２１Ｒ薬液ポンプ
２２装着部
２７接地輪軸（カム軸）
２８Ｌ・２８Ｒ接地輪
４２ａ・４５ａ支持孔
４４支持具
４５ガイド部材
４６第一軸部
４７第二軸部
４８バネ（付勢体）
４９ノブ（把持部）
５１第一調整孔群
５１ａ・５１ｂ・５１ｃ・５１ｄ調整孔
５２第二調整孔群
５２ｂ装着調整孔
５２ａ吐出量調整孔
５３パイプ部材
５４固定具
５７地面
９２・９３カム
９２ａ・９３ａカム凸部
９２ｂ・９３ｂ基礎円
９４共通下死点
Ｌ伸縮長さ 1 Soil disinfector 2 Walking-type management machine (traveling vehicle)
11 Hitch 15L / 15R Telescopic mechanism 16L / 16R Chemical liquid injection claw 21L / 21R Chemical liquid pump 22 Mounting part 27 Grounding wheel shaft (cam shaft)
28L / 28R Grounding wheel 42a / 45a Support hole 44 Support tool 45 Guide member 46 First shaft portion 47 Second shaft portion 48 Spring (biasing member)
49 Knob (gripping part)
51 First adjustment hole group 51a / 51b / 51c / 51d Adjustment hole 52 Second adjustment hole group 52b Mounting adjustment hole 52a Discharge amount adjustment hole 53 Pipe member 54 Fixing tool 57 Ground 92/93 Cam 92a / 93a Cam projection 92b / 93b Base circle 94 Common bottom dead center L Stretching length

Claims

A plurality of chemical solution injection claws that are attached to a traveling vehicle and inject the chemical solution into the soil, a plurality of reciprocating drive chemical pumps that pump the chemical solution to the chemical injection nail, and a grounding wheel that drives the chemical pump In the soil disinfecting machine, the chemical solution injection claw slides up and down in a cylindrical support provided in the machine body, and the fixing tool is inserted and fixed from the support hole of the support device to the adjustment hole of the chemical solution injection claw. And a first adjusting hole group for setting an injection depth when the chemical liquid is injected by inserting the chemical liquid injection claw into the soil. It consists of a second adjustment hole group that controls the attitude of the fuselage by bringing the tip of the injection claw into contact with the ground, and the second adjustment hole group is below the first adjustment hole group, and the first adjustment hole group A soil disinfector characterized in that it is composed of an adjustment hole having a smaller diameter than the hole group.

The second adjustment hole group projects the chemical solution injection claw downward, and supports the machine body by the chemical solution injection claw and the grounding wheel, thereby disposing the soil disinfecting machine at a position where it can be attached to and detached from the locking portion of the traveling vehicle. A mounting adjustment hole for mounting the soil disinfecting machine on the traveling vehicle, and at least one chemical injection claw projecting downward after the mounting, and the grounding wheel is grounded with the traveling vehicle as a fulcrum. The soil disinfecting machine according to claim 1, further comprising: a discharge amount adjusting hole for rotating the grounding wheel and measuring a discharge liquid from another chemical liquid injection claw while supporting the ascending state.

The fixing tool has a larger diameter than the first shaft portion and the same diameter as the first shaft portion that can move through a cylindrical guide member provided in the support tool and can be inserted into each adjustment hole of the second adjustment hole group. A second shaft portion that is formed on an axis, moves in the guide member and cannot be inserted into each adjustment hole of the second adjustment hole group and can be inserted into each adjustment hole of the first adjustment hole group; and The urging body that constantly urges both shaft portions toward the support hole, and a gripping portion that pushes and pulls the both shaft portions toward the support hole are provided. The soil disinfector described.

The soil disinfector according to claim 3, wherein the second shaft portion is formed in the middle portion of the first shaft portion by detachably fitting a cylindrical pipe member to the middle portion of the first shaft portion. .

The chemical pump is a diaphragm pump, and includes a plurality of cams for individually operating the diaphragm pumps. The cams are supported by a common cam shaft that is linked to the grounding wheel, and are disk-shaped. Has a cam projection on the outer circumference of the base circle, and the cam projection phase is shifted between the cams, and the bottom dead center of all cams matches between adjacent cam projections of each cam. The soil disinfector according to any one of claims 1 to 4, wherein at least one common bottom dead center is provided.