JP5283523B2

JP5283523B2 - Management machine

Info

Publication number: JP5283523B2
Application number: JP2009016007A
Authority: JP
Inventors: 将憲中野; 秀司西村; 忠義中村
Original assignee: Yanmar Co Ltd
Current assignee: Yanmar Co Ltd
Priority date: 2009-01-27
Filing date: 2009-01-27
Publication date: 2013-09-04
Anticipated expiration: 2029-01-27
Also published as: JP2010172219A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a levee-forming device which can easily be switched into a leveling work or into a levee-forming work and enables both an "outside" levee-forming work and an "inside" levee-forming work. <P>SOLUTION: The tending machine is characterized by having a pair of the right and left first forming plates 52, 52 and a pair of the right and left second forming plates 53R, 53L detachably, upward or downward rotatably, and laterally symmetrically attached to the rear end of a rotary cover 23, wherein the first forming plates 52, 52 and the second forming plates 53R, 53L each has an oblique side on one of the right and left sides; hinge portions are disposed on the oblique sides to freely turnably connect the first forming plates 52, 52 and the second forming plates 53R, 53L to each other so as to enable to switch into a state that the right and left first forming plates 52, 52 are fixed to the rotary cover 23 at the lateral center of the machine frame or into a state that the right and left first forming plates 52, 52 are fixed to the rotary cover 23 on both the right and left sides of the machine frame. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、管理機の後部に装着したローター耕耘装置の、更に後部に設ける畝立装置の技術に関する。 The invention, of the rotor cultivator attached to the rear of the tiller, to a technique of ridges elevation device further provided at the rear.

従来から、圃場における耕耘作業等においては、複数の耕耘爪からなるロータリーを備えたローター耕耘装置を機体後部に装着し、畝立て作業を行う場合には、該ローター耕耘装置の後部に培土板または畝立装置を装着するようにしている。このように畝立て作業を行うためには、培土板または畝立装置を装着する必要があるため、連結部をローター耕耘装置の後部に設け、強固に支持するために大型化が避けられない。そこで、簡単な構成で培土器をローター耕耘装置の後部に設ける技術が公知となっている（例えば、特許文献１を参照。）。 Conventionally, in a tilling work or the like in a farm field, a rotor tilling device having a rotary composed of a plurality of tilling claws is attached to the rear part of the machine body, and when performing a standing work, a cultivating plate or A stand-up device is installed. In order to carry out the uprighting work in this way, it is necessary to mount a soil culturing plate or uprighting device, so that the connecting portion is provided at the rear of the rotor tillage device and is firmly supported to increase the size. Then, the technique which provides a cultivator with the simple structure in the rear part of a rotor tiller is known (for example, refer patent document 1).

特開２００８−１６１１２２号公報JP 2008-161122 A

前記「特許文献１」に示すような管理機の場合、外盛り（機体左右両側に畝を形成する方式）の畝立て作業を行う構成となっており、内盛り（機体左右中央に畝を形成する方式）の畝立て作業はできない構成となっている。そのため、一畝の形成に「外盛り」作業を二度行う必要があることから、作業効率が悪かった。そこで、本発明においては、均平作業と畝立て作業とを容易に切り替えられ、「外盛り」「内盛り」の両畝立て作業が可能な畝立装置の提供を課題とする。 In the case of a management machine as shown in the above-mentioned “Patent Document 1”, it is configured to perform an upright work (a method of forming ridges on both the left and right sides of the machine body), and a ridge is formed in the middle of the machine body (left and right sides). This is a configuration in which the upsetting work cannot be performed. For this reason, the work efficiency was poor because it was necessary to carry out the “outside” work twice to form a glance. Therefore, an object of the present invention is to provide an erecting apparatus that can easily switch between leveling work and erecting work and that can perform both erecting work of “outside” and “inner”.

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。 The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

請求項１においては、走行部（４）の後部にローター耕耘装置（５）を配設し、該ローター耕耘装置（５）のロータリー（２１）の上方を覆うロータリーカバー（２３）を備える管理機（１）において、前記ロータリーカバー（２３）の後端部に、着脱可能、かつ、上下回動自在に取り付けられ、左右対称に構成される左右一対の第一成形板（５２）と第二成形板（５３）とを備え、該第一成形板（５２）と第二成形板（５３）は、それぞれ左右一側に斜辺を有し、該斜辺にヒンジ部をそれぞれ設けて第一成形板（５２）と第二成形板（５３）を回動自在に連結し、前記左右の第一成形板（５２・５２）を、機体左右中央でロータリーカバー（２３）に固定し、左右の第二成形板（５３Ｌ・５３Ｒ）を、第一成形板（５２・５２）に対してヒンジにより回動自在に支持した外盛作業時における成形板の折曲状態と、前記左右の第一成形板（５２・５２）を機体左右両側でロータリーカバー（２３）に固定し、左右の第二成形板（５３Ｌ・５３Ｒ）を第一成形板（５２・５２）に対してヒンジにより回動自在に支持した内盛作業時における成形板の折曲状態とに付け替え可能に構成し、前記第一成形板（５２）、及び第二成形板（５３）の左右他側の側辺は、上方に折り曲げて縁部（５２ｄ・５３ｄ）を形成し、該縁部（５２ｄ・５３ｄ）には固定孔（５２ｅ・５３ｅ）を複数開口し、左右の第一成形板（５２・５２）の縁部（５２ｄ・５２ｄ）同士、または、左右の第二成形板（５３Ｌ・５３Ｒ）の縁部（５３ｄ・５３ｄ））同士を当接させて固定可能に構成し、前記内盛作業時には、左右外側の第一成形板（５２・５２）の縁部（５２ｄ・５２ｄ）と、前記ロータリーカバー（２３）の左右両側板に掛止した固定部材（５８・５８）の両端を掛止して、前記第一成形板（５２・５２）を固定保持するものである。 In Claim 1, the rotor tiller (5) is arrange | positioned in the rear part of a traveling part (4), and the management machine provided with the rotary cover (23) which covers the upper part of the rotary (21) of this rotor tiller (5). In (1), a pair of left and right first molding plates (52) and second molding that are detachably attached to the rear end portion of the rotary cover (23) and are pivotable up and down and configured symmetrically. Plate (53), each of the first molding plate (52) and the second molding plate (53) has a hypotenuse on one side of the left and right sides, and a hinge portion is provided on the hypotenuse side, respectively. 52) and the second molding plate (53) are rotatably connected, and the left and right first molding plates (52, 52) are fixed to the rotary cover (23) at the center of the left and right sides of the machine body, and the left and right second molding plates are formed. The plate (53L / 53R) against the first molded plate (52/52) A folding state of the molded plate in freely supported by the time the outer Sheng working pivoted by di, and the fixed first mold plate of the left and right (52, 52) to the rotary cover (23) in the machine body left and right sides, the left and right first The second molded plate (53L / 53R) is configured to be able to be replaced with the bent state of the molded plate during the internal work in which the first molded plate (52/52) is rotatably supported by a hinge . The left and right other sides of the one molded plate (52) and the second molded plate (53) are bent upward to form edges (52d, 53d) and fixed to the edges (52d, 53d). A plurality of holes (52e, 53e) are opened, and the edges (52d, 52d) of the left and right first molded plates (52, 52) or the edges (53d) of the left and right second molded plates (53L, 53R) are formed. -53d)) It can be fixed by bringing them into contact with each other, The both ends of the edge portions (52d, 52d) of the left and right outer first molded plates (52, 52) and the fixing members (58, 58) hooked to the left and right side plates of the rotary cover (23) are hooked. The first molded plate (52/52) is fixedly held .

本発明の効果として、以下に示すような効果を奏する。 As effects of the present invention, the following effects can be obtained.

請求項１においては、耕耘作業に用いる成形板を用いて、畝立て作業を行うことが可能となる。よって、畝立装置等を別途設ける必要がなく、工具を用いた脱着作業の煩わしさが解消されるばかりか、管理機全体の重量軽減も図られ、作業者が管理機を操作するうえで、操作性が向上する。
また、畝立て作業の際には左右に配置される成形板の取付位置を互いに入れ替えることで、容易に「外盛り」から「内盛り」への切換えを行うことが可能となる。よって一畝ごとの形成が可能となり、畝立て作業時間の短縮化が図られ効率的である。 According to the first aspect, it is possible to perform the uprighting work by using the forming plate used for the tilling work. Therefore, it is not necessary to provide a stand-up device or the like separately, and not only the trouble of detaching work using tools is eliminated, but also the weight of the entire management machine is reduced, so that the operator can operate the management machine. Operability is improved.
In addition, during the uprighting operation, it is possible to easily switch from “external pitch” to “internal pitch” by exchanging the mounting positions of the molding plates arranged on the left and right with each other. Therefore, it is possible to form every kite, and it is efficient because it shortens the erection work time.

また、「外盛り」仕様であっても「内盛り」仕様であっても縁部同士を連結固定することにより、左右の成形板を一枚の板状に一体化して、均平作業が容易にできるようになる。また、連結を解除することにより容易に「外盛り」仕様と「内盛り」仕様に変更可能となる。 In addition, it is easy to perform leveling work by integrating the left and right molded plates into a single plate by connecting and fixing the edges to each other, regardless of the “outside” or “inside” specifications. To be able to. In addition, it is possible to easily change to the “externally-filled” specification and “internally-filled” specification by releasing the connection.

また、前記内盛作業時には、左右外側の第一成形板（５２・５２）の縁部（５２ｄ・５２ｄ）と、前記ロータリーカバー（２３）の左右両側板に掛止した固定部材（５８・５８）の両端を掛止して、前記第一成形板（５２・５２）を固定保持することにより、内盛作業時時において壌に押されて、該第一成形板（５２・５２）が、後上方へと浮上るのを阻止する構成とすることが出来るのである。
また、他に別途掛止機構や掛止部を設けることもなく簡単な構造によって、畝立装置５１を固定保持することができ経済的である。 Further, at the time of the inner work, the fixing members (58, 58) hooked on the edges (52d, 52d) of the left and right first molded plates (52, 52) and the left and right side plates of the rotary cover (23). ), And the first molded plate (52, 52) is fixedly held by the first molding plate (52, 52). It can be configured to prevent it from rising upward.
In addition, it is economical that the upright device 51 can be fixed and held with a simple structure without providing a separate latching mechanism or latching portion.

本発明の一実施例に係る管理機の全体的な構成を示した側面図。The side view which showed the whole structure of the management machine which concerns on one Example of this invention. 成形板の全体的な構成を示した背面図。The rear view which showed the whole structure of the shaping | molding board. 成形板の左側部の構成を示した背面図。The rear view which showed the structure of the left side part of a shaping | molding board. 成形板上部の支点軸近傍の断面を示した図であり（ａ）は図３における矢視Ａ−Ａ’から見た断面側面図、（ｂ）は同じく矢視Ｂ−Ｂ’から見た断面側面図、（ｃ）は同じく矢視Ｃ−Ｃ’から見た断面側面図、（ｄ）は同じく矢視Ｄ−Ｄ’から見た断面側面図、（ｅ）は同じく矢視Ｅ−Ｅ’から見た断面側面図、（ｆ）は同じく矢視Ｆ−Ｆ’から見た断面側面図。It is the figure which showed the cross section near the fulcrum axis | shaft of a shaping | molding board upper part, (a) is a cross-sectional side view seen from arrow AA 'in FIG. 3, (b) is the cross section seen similarly from arrow BB'. Side view, (c) is also a sectional side view as seen from the arrow CC ', (d) is a sectional side view as seen from the arrow DD', (e) is also seen from the arrow EE '. The cross-sectional side view seen from FIG. 1, (f) is the cross-sectional side view seen similarly from arrow FF '. 同じく支点軸の摺動状態を示した背面図。The rear view which similarly showed the sliding state of the fulcrum shaft. 外盛作業時における成形板の折曲状態を示した背面図。The rear view which showed the bending state of the shaping | molding board at the time of an external work. 左右両成形板の配置を交換した場合の全体的な構成を示した背面図。The rear view which showed the whole structure at the time of replacing | exchanging arrangement | positioning of a right-and-left both molding board. 内盛作業時における成形板の折曲状態を示した背面図。The rear view which showed the bending state of the shaping | molding board at the time of internal lining work. 外盛作業時における耕耘作業部近傍を示した側面図。The side view which showed the cultivation work part vicinity at the time of an outlay work. 内盛作業時における耕耘作業部近傍を示した側面図。The side view which showed the cultivation work part vicinity at the time of internal work.

次に、発明の実施の形態を説明する。
［管理機１の全体構成］
まず、本実施例に係る管理機１の全体構成について、図１を用いて説明する。管理機１は前後中央にミッション部２、その前部に原動機部３、その後部にローター耕耘装置５を配設している。該ミッション部２は側面視略へ字状に形成され、該ミッション部２の前側下部を走行部４とし、該ミッション部２の前後中央上部からハンドル２６が後部上方へ延設されて、該ハンドル２６後部を操作部６としている。 Next, embodiments of the invention will be described.
[Overall configuration of management machine 1]
First, the overall configuration of the management machine 1 according to the present embodiment will be described with reference to FIG. The management machine 1 has a mission unit 2 at the front and rear center, a motor unit 3 at the front, and a rotor tiller 5 at the rear. The mission unit 2 is formed in a generally square shape when viewed from the side. A lower portion on the front side of the mission unit 2 is a traveling unit 4, and a handle 26 extends from the front and rear center upper part of the mission unit 2 to the upper rear portion. The rear part 26 is the operation unit 6.

前記ミッション部２の左側面には入力軸１１が突設され、前記ミッション部２内部には変速機構が収納され、原動機部３の駆動力が前記入力軸１１に伝えられ、変速機構を介して走行部４やローター耕耘装置５に伝達されるようになっている。 An input shaft 11 projects from the left side surface of the mission unit 2, a transmission mechanism is housed inside the mission unit 2, and the driving force of the prime mover unit 3 is transmitted to the input shaft 11, via the transmission mechanism. It is transmitted to the traveling unit 4 and the rotor tiller 5.

前記原動機部３は、ミッション部２の前部に取付けられる原動機載置台１２や、該原動機載置台１２の上部に載設される原動機１３等により構成される。 The prime mover unit 3 includes a prime mover mounting table 12 attached to the front part of the mission unit 2, a prime mover 13 mounted on the top of the prime mover mounting table 12, and the like.

前記走行部４は、ミッション部２の前下部に左右両水平方向に支持される車軸１６・１６や、該車軸１６・１６の左右両端部に固設される車輪１７・１７等により構成される。 The traveling unit 4 includes axles 16 and 16 that are supported in the left and right horizontal directions at the front lower portion of the transmission unit 2 and wheels 17 and 17 that are fixedly provided at both left and right ends of the axles 16 and 16. .

前記ローター耕耘装置５は、ミッション部２の後下部に左右水平方向に支持される耕耘爪軸１８や、該耕耘爪軸１８上に植設される複数の耕耘爪２０・２０・・・や、ロータリーカバー２３等により構成される。また、該耕耘爪軸１８と複数の耕耘爪２０・２０・・・とによりロータリー２１が構成される。 The rotor tilling device 5 includes a tilling claw shaft 18 supported in the left and right horizontal direction at the rear lower portion of the mission unit 2, a plurality of tilling claws 20, 20... Consists of a rotary cover 23 and the like. Further, the rotary claw shaft 18 and the plurality of tilling claws 20, 20.

前記ロータリーカバー２３は耕耘爪２０・２０・・・の回動軌跡２２の上方を覆い、該ロータリーカバー２３の後部には、後述する畝立装置５１が配設されている。 The rotary cover 23 covers the upper side of the rotation trajectory 22 of the tilling claws 20, 20...

前記ミッション部２の後部上からは支持ブラケット２４が後上方に向かって延設され、該支持ブラケット２４に耕深調節バー２５が上下位置調節可能に取り付けられている。該耕深調節バー２５は、ローター耕耘装置５によって作業を行う時に耕耘深さを調節するためのものであり、また、左右中央部の残耕部分を耕起処理する残耕処理具としての機能をも有している。 A support bracket 24 extends rearward and upward from the rear part of the transmission unit 2, and a tilling depth adjusting bar 25 is attached to the support bracket 24 so that the vertical position can be adjusted. The plowing depth adjustment bar 25 is for adjusting the plowing depth when working with the rotor plowing device 5, and also functions as a residual tillage processing tool for plowing the remaining plowing portion at the left and right central portions. It also has.

耕深調節バー２５の下端部には、後方に突出する底板１９が設けられ、該底板１９の後端部には、固定部材５６・５６が設けられている。該固定部材５６・５６は、畝立て作業の「外盛り」の際に、畝立装置５１の左右中央の下端部を固定するためのものである。なお、ロータリーカバー２３の左右両側面の下部には、後述する固定部材５８・５８が設けられている。 A bottom plate 19 that protrudes rearward is provided at the lower end portion of the tilling depth adjustment bar 25, and fixing members 56 and 56 are provided at the rear end portion of the bottom plate 19. The fixing members 56 and 56 are for fixing the lower left and right central portions of the erecting device 51 during the “outer scale” of the erecting operation. Note that fixing members 58 and 58, which will be described later, are provided below the left and right side surfaces of the rotary cover 23.

前記操作部６は、前部がミッション部２の前後中央部に固設された平面視略門型状のハンドル２６と、該ハンドル２６の後端部に取り付けられるクラッチレバー２７と、ミッション部２の前後中央部より後上方に突出される変速レバー２８等を備える。 The operation unit 6 includes a handle 26 having a substantially gate-like shape in plan view, the front part of which is fixed to the front and rear center part of the mission unit 2, a clutch lever 27 attached to the rear end of the handle 26, and the mission unit 2. A shift lever 28 and the like projecting rearward and upward from the front / rear center part of the rear side.

［畝立装置５１］
次に、本発明に係る畝立装置５１の詳細について、図２乃至図４を用いて説明する。なお、図４における矢印Ｚは前方を示すものであり、以下これに基づいて左右方向を規定する。 [Standing device 51]
Next, details of the upright device 51 according to the present invention will be described with reference to FIGS. In addition, the arrow Z in FIG. 4 shows the front, and the left-right direction is prescribed | regulated based on this below.

畝立装置５１はその前部がロータリーカバー２３の後部に上下回動自在に取り付けられる。該畝立装置５１は左右一対の第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌとにより構成され、畝立て作業を行う場合に、第一成形板５２・５２、または第二成形板５３Ｒ・５３Ｌをロータリーカバー２３に固定するものである。また、前記右側の成形板（第一成形板５２と第二成形板５３Ｒ）と左側の成形板（第一成形板５２と第二成形板５３Ｌ）は左右対称に構成され、左右に分離可能であり、左右を一体に固定して一枚の均平板として使用することも可能としている。本実施例では、左右の成形板は左右対称に構成しているので、左側の第一成形板５２と第二成形板５３Ｌについて説明する。 The front part of the upright device 51 is attached to the rear part of the rotary cover 23 so as to be rotatable up and down. The erecting device 51 is composed of a pair of left and right first forming plates 52 and 52 and second forming plates 53R and 53L, and when performing erecting work, the first forming plates 52 and 52, or the second forming plate. 53R and 53L are fixed to the rotary cover 23. Also, the right molding plate (first molding plate 52 and second molding plate 53R) and the left molding plate (first molding plate 52 and second molding plate 53L) are symmetrically configured and can be separated into left and right. Yes, it can be used as a single flat plate with the left and right sides fixed together. In the present embodiment, since the left and right molded plates are configured symmetrically, the left first molded plate 52 and the second molded plate 53L will be described.

前記第一成形板５２と第二成形板５３Ｌはそれぞれ台形に形成して、それぞれの斜辺をヒンジを介して連結することで長方形となる構成としている。つまり、第一成形板５２と第二成形板５３Ｌの各左右一側の斜辺の傾斜角は一致させ、左右他側の側辺は上辺及び下辺に対して直角となるように構成している。 The first molding plate 52 and the second molding plate 53L are each formed in a trapezoidal shape, and are formed into a rectangular shape by connecting respective oblique sides via hinges. That is, the inclined angles of the oblique sides on the left and right sides of the first molded plate 52 and the second molded plate 53L are made to coincide with each other, and the lateral sides on the left and right sides are perpendicular to the upper side and the lower side.

まず、第一成形板５２について、説明する。第一成形板５２は後面視逆台形状に形成される平板材からなる。第一成形板５２の、機体左右方向外側の斜辺の上下中途には、筒状のヒンジ部材（筒状部材）５２ａが設けられ、第一成形板５２の機体左右方向内側の側辺（前後方向の辺）は上方に折り曲げて縁部５２ｄを形成し、該縁部５２ｄには固定孔５２ｅ・５２ｅ（図１０を参照）が複数開口されている。該第一成形板５２の上辺には、機体左右中央側に第一成形板側掛止部５２ｂが設けられ、該第一成形板側掛止部５２ｂから所定間隔をあけて第二成形板側掛止部５２ｃが設けられている。 First, the first molded plate 52 will be described. The 1st shaping | molding board 52 consists of a flat plate material formed in back view reverse trapezoid shape. A cylindrical hinge member (cylindrical member) 52a is provided in the middle of the oblique side of the first molded plate 52 on the outer side in the lateral direction of the machine body. ) Is bent upward to form an edge 52d, and a plurality of fixing holes 52e and 52e (see FIG. 10) are opened in the edge 52d. On the upper side of the first molded plate 52, a first molded plate side latching portion 52b is provided on the left and right center side of the body, and the second molded plate side is spaced apart from the first molded plate side latched portion 52b. A latching portion 52c is provided.

ここで、図３、図４（ａ）に示すように、第一成形板側掛止部５２ｂは、第一成形板５２の機体左右中央側の上側辺から矩形片を上方に突出して側面視略Ｕ字状に湾曲して折り曲げ形成され、前方が開放する構成とし、その内部空間には後述する支点軸５５を収納できる大きさとしている。つまり、第一成形板側掛止部５２ｂの曲率半径は支点軸５５の半径よりも若干大きく構成している。 Here, as shown in FIGS. 3 and 4 (a), the first molded plate side latching portion 52b projects a rectangular piece upward from the upper side of the left and right center side of the body of the first molded plate 52 in side view. It is bent and formed in a substantially U shape, and is configured to be open at the front, so that a fulcrum shaft 55 (to be described later) can be accommodated in the internal space. That is, the radius of curvature of the first molded plate side latching portion 52 b is configured to be slightly larger than the radius of the fulcrum shaft 55.

また、第二成形板側掛止部５２ｃは、図４（ｃ）に示すように、第一成形板５２の機体左右外側の上辺から矩形片を上方に突出して側面視略Ｌ字状に後方に折り曲げ形成されている。この屈曲部の曲率半径は支点軸５５の半径よりも若干大きく構成している。 Further, as shown in FIG. 4 (c), the second molded plate side latching portion 52c protrudes upward from the upper left and right outer sides of the first molded plate 52, and rearward in a substantially L shape in side view. It is bent and formed. The radius of curvature of the bent portion is slightly larger than the radius of the fulcrum shaft 55.

このように、第一成形板５２の上側辺には、第一成形板側掛止部５２ｂと、第二成形板側掛止部５２ｃとが設けられ、この成形板側掛止部５２ｂ・５２ｃの湾曲部（或いは屈曲部）の湾曲中心は、機体左右水平方向に延出する同一直線上となるように配設されている。 Thus, the first molding plate side latching portion 52b and the second molding plate side latching portion 52c are provided on the upper side of the first molding plate 52, and the molding plate side latching portions 52b and 52c. The bending center (or bending portion) of the bending portion is arranged so as to be on the same straight line extending in the horizontal direction of the body.

次に、第二成形板５３Ｌについて説明する。第二成形板５３Ｌは平板材を平面視略台形状に形成され、機体左右中央側に斜辺を有する構成とし、該斜辺の角度、及び長さは前記第一成形板５２の斜辺の角度、及び長さと略一致させて、第一成形板５２と第二成形板５３Ｌとを連結した状態で長方形となる形状としている。 Next, the second molded plate 53L will be described. The second molding plate 53L is a flat plate formed in a substantially trapezoidal shape in plan view, and has a hypotenuse on the left and right center side of the machine body. The hypotenuse angle and length are the hypotenuse angle of the first molding plate 52, and It is made into the shape which becomes a rectangle in the state which made it correspond to length substantially and connected the 1st shaping | molding board 52 and the 2nd shaping | molding board 53L.

第二成形板５３Ｌの機体左右方向外側の側辺（前後方向の辺）は、上方に折り曲げて縁部５３ｄを形成し、該縁部５３ｄには固定孔５３ｅ・５３ｅ（図９を参照）が複数開口されている。 The side of the second molded plate 53L on the outer side in the left-right direction (side in the front-rear direction) is bent upward to form an edge 53d, and the edge 53d has fixing holes 53e and 53e (see FIG. 9). There are multiple openings.

前記第二成形板５３Ｌの斜辺の中途には、ヒンジを構成する二個の筒状部材５３ａ・５３ａが所定間隔をあけて固設される。該筒状部材５３ａ・５３ａの間隔は前記第一成形板５２に設けられる筒状部材５２ａの両側に位置するように配設されるとともに、該筒状部材５３ａ・５３ａと筒状部材５２ａの内径は略同一として同一軸心上に配設して回動軸５４を挿入し、第二成形板５３Ｌが第一成形板５２に対して回動自在に連結されている。 In the middle of the oblique side of the second molded plate 53L, two cylindrical members 53a and 53a constituting a hinge are fixedly provided with a predetermined interval. The intervals between the cylindrical members 53a and 53a are arranged on both sides of the cylindrical member 52a provided on the first molding plate 52, and the inner diameters of the cylindrical members 53a and 53a and the cylindrical member 52a are arranged. Are substantially the same and are arranged on the same axis and inserted with a rotation shaft 54, and the second molded plate 53 </ b> L is rotatably connected to the first molded plate 52.

前記回動軸５４の両端部（或いは、一方の端部）には、付勢手段としての捻りコイルバネ３０・３０が、前記回動軸５４上に設けられ、該捻りコイルバネ３０・３０により第二成形板５３Ｌが機体前方に回動するように付勢されている。 At both ends (or one end) of the rotating shaft 54, torsion coil springs 30 and 30 as urging means are provided on the rotating shaft 54, and the torsion coil springs 30 and 30 provide a second The molding plate 53L is biased so as to rotate forward of the machine body.

第二成形板５３Ｌの上側辺の左右中央には、第三成形板側掛止部５３ｃが設けられる。該第三成形板側掛止部５３ｃの左右幅は第一成形板側掛止部５２ｂの左右幅と同じ長さとしている。そして、前記第三成形板側掛止部５３ｃは、図４（ｅ）に示すように、第二成形板５３Ｌの上辺の左右中央から矩形片を上方に突出して、側面視逆Ｕ字状に下方が開放するように湾曲して折り曲げ形成され、その折り曲げ部の曲率半径は、支点軸５５の半径よりも若干大きくなるように構成している。 A third molded plate side latching portion 53c is provided at the left and right center of the upper side of the second molded plate 53L. The left and right width of the third molded plate side latching portion 53c is the same as the left and right width of the first molded plate side latching portion 52b. And as shown in FIG.4 (e), the said 3rd shaping | molding board side latching | locking part 53c protrudes a rectangular piece upwards from the left-right center of the upper side of the 2nd shaping | molding board 53L, and is reverse U-shaped by side view. The bent portion is bent so as to open downward, and the radius of curvature of the bent portion is configured to be slightly larger than the radius of the fulcrum shaft 55.

また、第三成形板側掛止部５３ｃの湾曲部の湾曲中心は、機体左右水平方向となるようにして設けられ、前記成形板側掛止部５２ｂ・５２ｃの湾曲中心と略同一直線上となるように配設される。 Further, the bending center of the curved portion of the third molded plate side latching portion 53c is provided so as to be in the horizontal direction of the machine body, and is substantially collinear with the curved centers of the molded plate side latching portions 52b and 52c. It arrange | positions so that it may become.

［畝立装置５１の取付構造］
次に、前記畝立装置５１の取付構造の詳細について、図２乃至図８を用いて説明する。ロータリーカバー２３の後下部には、長手方向を左右方向とする板部材からなる保持部材５７Ｒ・５７Ｌが、左右両側にボルト等により着脱可能に固設される。但し、これら保持部材５７Ｒ・５７Ｌは一体的に構成することも可能であり、更に言えば、ロータリーカバー２３に一体的に構成することも可能である。前記保持部材５７Ｒ・５７Ｌは、機体中央に対して互いに左右対称となるように形成されるため、以下左側の保持部材５７Ｌについて詳述し、右側の保持部材５７Ｒの説明は省略する。 [Mounting structure of upright device 51]
Next, details of the mounting structure of the upright device 51 will be described with reference to FIGS. Holding members 57R and 57L made of plate members whose longitudinal direction is the left-right direction are fixed to the left and right sides of the rotary cover 23 so as to be detachable by bolts or the like. However, these holding members 57R and 57L can be configured integrally, and more specifically, can be configured integrally with the rotary cover 23. Since the holding members 57R and 57L are formed so as to be bilaterally symmetric with respect to the center of the machine body, the left holding member 57L will be described in detail below, and the description of the right holding member 57R will be omitted.

保持部材５７Ｌの下側辺には機体中央から外方に向けて、第四カバー側掛止部５７ｄと、第一カバー側掛止部５７ａと、第二カバー側掛止部５７ｂと、第三カバー側掛止部５７ｃとが設けられる。 On the lower side of the holding member 57L, the fourth cover side latching portion 57d, the first cover side latching portion 57a, the second cover side latching portion 57b, A cover side latching portion 57c is provided.

前記第一カバー側掛止部５７ａは、図４（ｂ）に示すように、保持部材５７Ｌの後下側辺の機体左右中央側（図２における右側）において、側面視略Ｕ字状に前方が開放するように折り曲げ形成され、この折り曲げ部の曲率半径は支点軸５５の半径よりも僅かに大きくなるように形成される。そして、前記第一カバー側掛止部５７ａは前記第一成形板側掛止部５２ｂと第二成形板側掛止部５２ｃとの間に配置される。 As shown in FIG. 4 (b), the first cover side latching portion 57a has a substantially U-shaped front side when viewed from the side on the left and right center side (right side in FIG. 2) of the rear lower side of the holding member 57L. Is formed so that the radius of curvature of the bent portion is slightly larger than the radius of the fulcrum shaft 55. The first cover side latching portion 57a is disposed between the first molding plate side latching portion 52b and the second molding plate side latching portion 52c.

第三カバー側掛止部５７ｃは、保持部材５７Ｌの下側辺の最外側（図２における左側）に配置され、その機体内側に所定間隔をあけて第二カバー側掛止部５７ｂが配置される。つまり、該第二カバー側掛止部５７ｂと第三カバー側掛止部５７ｃの間に前記第三成形板側掛止部５３ｃが配置される。 The third cover side latching portion 57c is disposed on the outermost side (left side in FIG. 2) of the lower side of the holding member 57L, and the second cover side latching portion 57b is disposed at a predetermined interval inside the machine body. The That is, the third molded plate side latching portion 53c is disposed between the second cover side latching portion 57b and the third cover side latching portion 57c.

第四カバー側掛止部５７ｄは、前記第三カバー側掛止部５７ｃと左右対称に形成され、第二カバー側掛止部５７ｂと第三カバー側掛止部５７ｃとの間の距離と、第一カバー側掛止部５７ａと第四カバー側掛止部５７ｄと、の間の距離は同じ長さとしている。つまり、第二カバー側掛止部５７ｂと第三カバー側掛止部５７ｃとの間に形成される凹部と、第一カバー側掛止部５７ａと第四カバー側掛止部５７ｄとの間に形成される凹部とを同じ形状として、この凹部に第一成形板側掛止部５２ｂ、または第三成形板側掛止部５３ｃを嵌合できる構成としている。 The fourth cover side latching part 57d is formed symmetrically with the third cover side latching part 57c, and the distance between the second cover side latching part 57b and the third cover side latching part 57c; The distance between the first cover side latching portion 57a and the fourth cover side latching portion 57d is the same length. That is, between the recess formed between the second cover side latching portion 57b and the third cover side latching portion 57c, and between the first cover side latching portion 57a and the fourth cover side latching portion 57d. The formed concave portion has the same shape, and the first molded plate side latching portion 52b or the third molded plate side latching portion 53c can be fitted into the concave portion.

第二カバー側掛止部５７ｂ、及び第三カバー側掛止部５７ｃは、図４（ｄ）、及び図４（ｆ）に示すように、保持部材５７Ｌの下側辺部から側面視略Ｕ状に上方が開放されるように湾曲して折り曲げ形成され、その湾曲部の曲率半径は、支点軸５５の半径よりも若干大きくなるように構成している。 As shown in FIGS. 4D and 4F, the second cover side latching portion 57b and the third cover side latching portion 57c are substantially U-viewed from the lower side portion of the holding member 57L. The curved portion is bent and bent so that the upper portion is opened, and the radius of curvature of the curved portion is configured to be slightly larger than the radius of the fulcrum shaft 55.

このように、ロータリーカバー２３の後下部の左右両側に設けられる保持部材５７Ｒ・５７Ｌの下側辺には、第一カバー側掛止部５７ａ・５７ａと、第二カバー側掛止部５７ｂ・５７ｂと、第三カバー側掛止部５７ｃ・５７ｃと、第四カバー側掛止部５７ｄ・５７ｄとが、機体中央に対して左右対称に各々設けられ、これらカバー側掛止部５７ａ・５７ａ・５７ｂ・５７ｂ・５７ｃ・５７ｃ・５７ｄ・５７ｄに形成される湾曲部の湾曲中心は、機体左右水平方向に同一直線上に配設される。 Thus, on the lower sides of the holding members 57R and 57L provided on the left and right sides of the rear lower portion of the rotary cover 23, the first cover side latching portions 57a and 57a and the second cover side latching portions 57b and 57b are provided. The third cover side latching portions 57c and 57c and the fourth cover side latching portions 57d and 57d are provided symmetrically with respect to the center of the fuselage, and these cover side latching portions 57a, 57a and 57b are provided. The bending centers of the bending portions formed in 57b, 57c, 57c, 57d, and 57d are arranged on the same straight line in the horizontal direction of the body.

次に、支点軸５５について説明する。支点軸５５は丸棒部材からなり、左右二本の支点軸５５が各々カバー側掛止部５７ａ・５７ｂ・５７ｃ・５７ｄと成形板側掛止部５２ｂ・５２ｃ・５３ｃの湾曲部の中心を一致させた状態で、その中心部に配設され、保持部材５７Ｌ（５７Ｒ）の下部に畝立装置５１の上部を枢支する構成としている。そして、保持部材５７Ｌ（５７Ｒ）はロータリーカバー２３の後下部に固設されており、換言すれば、畝立装置５１はその上部において、支点軸５５を介して前記ロータリーカバー２３の後部に枢支される構成としている。 Next, the fulcrum shaft 55 will be described. The fulcrum shaft 55 is made of a round bar member, and the two left and right fulcrum shafts 55 coincide with the centers of the curved portions of the cover side latching portions 57a, 57b, 57c, and 57d and the molded plate side latching portions 52b, 52c, and 53c. In this state, the upper portion of the upright device 51 is pivotally supported by the lower portion of the holding member 57L (57R). The holding member 57L (57R) is fixed to the lower rear portion of the rotary cover 23. In other words, the upright device 51 is pivotally supported on the rear portion of the rotary cover 23 via the fulcrum shaft 55 at the upper portion. It is assumed to be configured.

前記支点軸５５の長手方向中央部には直角方向に突出する把持部５５ａが形成され、該把持部５５ａは取り付け状態において、第二成形板側掛止部５２ｃが配設される部分に位置するように構成される。 A gripping portion 55a protruding in a right angle direction is formed at the central portion in the longitudinal direction of the fulcrum shaft 55, and the gripping portion 55a is located at a portion where the second molded plate side latching portion 52c is disposed in the attached state. Configured as follows.

つまり、ロータリーカバー２３の後下側部の左側（或いは、右側）において、保持部材５７Ｌ（５７Ｒ）の下側辺に設けられる第三カバー側掛止部５７ｃと、第二カバー側掛止部５７ｂとの間に、第二成形板５３Ｌ（５３Ｒ）に設けられる第三成形板側掛止部５３ｃが配設され、第二カバー側掛止部５７ｂと、第一カバー側掛止部５７ａとの間に、第二成形板側掛止部５２ｃが配設され、第一カバー側掛止部５７ａと第四カバー側掛止部５７ｄとの間に第一成形板側掛止部５２ｂが配設される。 That is, on the left side (or right side) of the rear lower side portion of the rotary cover 23, the third cover side hook portion 57c and the second cover side hook portion 57b provided on the lower side of the holding member 57L (57R). The third molded plate side latching portion 53c provided on the second molded plate 53L (53R) is disposed between the second cover side latching portion 57b and the first cover side latching portion 57a. A second molding plate side latching portion 52c is disposed therebetween, and a first molding plate side latching portion 52b is disposed between the first cover side latching portion 57a and the fourth cover side latching portion 57d. Is done.

そして、これらカバー側掛止部５７ａ・５７ｂ・５７ｃ・５７ｄと、成形板側掛止部５２ｂ・５２ｃ・５３ｃとが、交互に配置されることで、支点軸５５によって畝立装置５１はロータリーカバー２３の後下端部に吊設されるのである。 The cover-side latching portions 57a, 57b, 57c, and 57d and the molded plate-side latching portions 52b, 52c, and 53c are alternately arranged, so that the erecting device 51 is rotated by the fulcrum shaft 55. 23 is hung on the rear lower end of the vehicle.

つまり、カバー側掛止部５７ａ・５７ｂ・５７ｃ・５７ｄと成形板側掛止部５２ｂ・５２ｃ・５３ｃは従来のパイプを溶接したりネジ等で固定するヒンジを用いることなく、ロータリーカバー２３の後下側部の左側（或いは、右側）に固設した保持部材５７Ｌ（５７Ｒ）の下端部、及び畝立装置５１の上端部に左右方向交互に突片を設けて、該突片を互いに反対方向に略Ｕ字状に折り曲げ形成してカバー側掛止部５７ａ・５７ｂ・５７ｃ・５７ｄと成形板側掛止部５２ｂ・５２ｃ・５３ｃを形成することで、互いに支点軸５５に引っ掛けることとなり、ロータリーカバー２３の後下端部に畝立装置５１の上端部を揺動自在に係止できるようになるのである。 In other words, the cover side latching portions 57a, 57b, 57c, and 57d and the molded plate side latching portions 52b, 52c, and 53c are provided on the rear side of the rotary cover 23 without using a hinge that welds a conventional pipe or fixes it with screws or the like. Protruding pieces are alternately provided in the left and right directions at the lower end of the holding member 57L (57R) fixed on the left side (or right side) of the lower portion and the upper end of the upright device 51, and the protruding pieces are opposite to each other. The cover side latching portions 57a, 57b, 57c, and 57d and the molded plate side latching portions 52b, 52c, and 53c are hooked on the fulcrum shaft 55 to form a rotary The upper end portion of the upright device 51 can be swingably locked to the rear lower end portion of the cover 23.

そして、カバー側掛止部５７ａ・５７ｂ・５７ｃに支点軸５５を係止した状態から、支点軸５５を左右摺動させることで、畝立装置５１をロータリーカバー２３の後部に対して着脱することが可能となる。例えば左側の成形板を外す場合には、支点軸５５を右側へ摺動させて、支点軸５５の左端を第三成形板側掛止部５３ｃから抜き、第二成形板５３Ｌを上方へ持ち上げる。その後、支点軸５５の把持部５５ａを固定手段２９を避けながら第二カバー側掛止部５７ｂの開放部まで摺動させることで、支点軸５５の右端が第一成形板側掛止部５２ｂから外れ、第一成形板５２を取り外すことができる。 Then, the upright device 51 can be attached to and detached from the rear portion of the rotary cover 23 by sliding the fulcrum shaft 55 left and right from the state in which the fulcrum shaft 55 is locked to the cover side latching portions 57a, 57b, and 57c. Is possible. For example, when removing the left molding plate, the fulcrum shaft 55 is slid to the right, the left end of the fulcrum shaft 55 is removed from the third molding plate side latching portion 53c, and the second molding plate 53L is lifted upward. Thereafter, the right end of the fulcrum shaft 55 is moved from the first molding plate side latching portion 52b by sliding the grip portion 55a of the fulcrum shaft 55 to the open portion of the second cover side latching portion 57b while avoiding the fixing means 29. The first molded plate 52 can be removed.

なお、支点軸５５の長手方向の寸法は、機体左右中央から畝立装置５１の左右両側部までの距離に比べて短く形成されており、詳しくは、支点軸５５の一端部を機体左右中央に位置させた場合に、他端部は、前記第二カバー側掛止部５７ｂの機体外方の側部に位置するように形成されている。 The longitudinal dimension of the fulcrum shaft 55 is shorter than the distance from the left and right center of the machine body to the left and right side parts of the upright device 51. Specifically, one end of the fulcrum shaft 55 is located at the left and right center of the machine body. When positioned, the other end is formed so as to be located on the outer side of the body of the second cover side hooking portion 57b.

そして、支点軸５５は把持部５５ａが第二カバー側掛止部５７ｂと第一カバー側掛止部５７ａとの間の左右幅の範囲で左右摺動可能となっており、外側（図３において左側）に把持部５５ａを位置させた（図５上段に示す）状態では、支点軸５５はカバー側掛止部５７ａ・５７ｂ・５７ｃと、成形板側掛止部５２ｂ・５２ｃ・５３ｃに係止された状態となっており、第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌは一体的に前後回動する。この状態では均平板として作用する。なお、縁部５２ｄ・５２ｄに形成した固定孔５２ｅ・５２ｅにはボルト３１・３１が挿入されナットを螺装して第一成形板５２・５２は連結固定されている。 The fulcrum shaft 55 is slidable left and right within the range of the left and right width between the second cover side latching portion 57b and the first cover side latching portion 57a. When the gripping portion 55a is positioned on the left side (shown in the upper part of FIG. 5), the fulcrum shaft 55 is locked to the cover side latching portions 57a, 57b, and 57c and the molding plate side latching portions 52b, 52c, and 53c. In this state, the first molded plates 52 and 52 and the second molded plates 53R and 53L rotate back and forth integrally. In this state, it acts as a flat plate. Bolts 31 and 31 are inserted into the fixing holes 52e and 52e formed in the edge portions 52d and 52d, and nuts are screwed into the first forming plates 52 and 52, which are connected and fixed.

次に、把持部５５ａを内側（図３において右側）に把持部５５ａを位置させた（図５下段に示す）状態では、支点軸５５は、第三カバー側掛止部５７ｃと第三成形板側掛止部５３ｃから外れ、カバー側掛止部５７ａ・５７ｂ・５７ｄと成形板側掛止部５２ｂ・５２ｃに係止された状態となっており、第二成形板５３Ｒ・５３Ｌは回動軸５４・５４を中心に後方に回動可能となる。 Next, in a state where the gripping portion 55a is positioned on the inner side (right side in FIG. 3) (shown in the lower part of FIG. 5), the fulcrum shaft 55 is connected to the third cover side latching portion 57c and the third molding plate. It is detached from the side latching portion 53c, and is locked to the cover side latching portions 57a, 57b and 57d and the molding plate side latching portions 52b and 52c. It becomes possible to rotate backward about 54 and 54.

そして、保持部材５７Ｌ（５７Ｒ）の左右中央において、前記第二成形板側掛止部５２ｃの近傍には、支点軸５５がカバー側掛止部５７ａ・５７ｂ・５７ｃと成形板側掛止部５２ｂ・５２ｃ・５３ｃとを係止した位置で前記把持部５５ａを固定するための固定手段２９が設けられている。 At the center of the left and right sides of the holding member 57L (57R), a fulcrum shaft 55 is disposed in the vicinity of the second molded plate side latching portion 52c, with the cover side latching portions 57a, 57b and 57c and the molded plate side latching portion 52b. A fixing means 29 is provided for fixing the grip portion 55a at a position where 52c and 53c are locked.

即ち、図３に示すように、前記固定手段２９は、後方に突出する二枚の板部材２９ａ・２９ａと、ボルトや丸棒部材等からなるロックピン２９ｂと、により構成されており、前記板部材２９ａ・２９ａには予め機体左右方向に貫通する貫通孔が設けられている。 That is, as shown in FIG. 3, the fixing means 29 is composed of two plate members 29a and 29a protruding rearward and a lock pin 29b made of a bolt, a round bar member, etc. The members 29a and 29a are previously provided with through holes penetrating in the left-right direction of the machine body.

そして、把持部５５ａを前記板部材２９ａ・２９ａの間に配設し、該把持部５５ａの外側の位置でロックピン２９ｂを前記板部材２９ａ・２９ａに挿入して固定することで、該把持部５５ａは支点軸５５の軸心を中心に回転することができないため固定でき、支点軸５５は軸心方向に摺動することができなくなるのである。 Then, the grip portion 55a is disposed between the plate members 29a and 29a, and the lock pin 29b is inserted and fixed to the plate members 29a and 29a at a position outside the grip portion 55a. 55a cannot be rotated around the axis of the fulcrum shaft 55 and can be fixed, and the fulcrum shaft 55 cannot slide in the axial direction.

なお、固定手段２９の構成は、本実施例の構成に限定されるものではなく、例えば、クランプ機構等を設けて把持部５５ａを上方に延出する姿勢に保持するものであってもよく、また、支点軸５５の軸方向への摺動動作を保持する機構であればよい。 The configuration of the fixing means 29 is not limited to the configuration of the present embodiment, and for example, a clamp mechanism or the like may be provided to hold the grip portion 55a in an upwardly extending posture. Any mechanism that holds the sliding movement of the fulcrum shaft 55 in the axial direction may be used.

このように、畝立装置５１を構成する右側の第一成形板５２と、右側の第二成形板５３Ｒとは、支点軸５５を介して、右側の保持部材５７Ｒの下部に枢支されるとともに、左側の第一成形板５２と、左側の第二成形板５３Ｌとは、支点軸５５を介して、左側の保持部材５７Ｌの下部に枢支される。そして、これら左右の保持部材５７Ｒ・５７Ｌが、ロータリーカバー２３の後下部の左右両側に各々固設される。 As described above, the right first molded plate 52 and the right second molded plate 53R constituting the upright device 51 are pivotally supported by the lower portion of the right holding member 57R via the fulcrum shaft 55. The left first molded plate 52 and the left second molded plate 53L are pivotally supported by a lower portion of the left holding member 57L via a fulcrum shaft 55. The left and right holding members 57R and 57L are fixed to the left and right sides of the rear lower portion of the rotary cover 23, respectively.

その結果、図６に示すように、畝立装置５１全体としては、その平面中央に二本の回動軸５４・５４が、軸線を逆ハ字状になるようにして配設されることとなり、前記支点軸５５・５５を各々機体中央に摺動することで、畝立装置５１の左右両側部（第二成形板５３Ｒ・５３Ｌ）を各々機体後方に回動することができる。 As a result, as shown in FIG. 6, as the entire upright device 51, the two rotating shafts 54 and 54 are arranged in the center of the plane so that the axes are in an inverted C shape. By sliding the fulcrum shafts 55 and 55 toward the center of the machine body, the left and right side portions (second molding plates 53R and 53L) of the upright device 51 can be rotated to the rear of the machine body.

つまり、畝立装置５１全体としては、第一成形板５２・５２を残して、背面視にて下方に窄む逆台形状に折り曲げ可能な状態となり、このような状態からなる畝立装置５１によって圃場の表層部を均し、整地することで、土壌に押されて捻りコイルバネ３０・３０・・・の付勢力に抗して第二成形板５３Ｌ・５３Ｒが後方へと回動され、機体左右両側に畝立て（外盛り）を形成することができるのである。 That is, the entire upright device 51 can be bent into an inverted trapezoidal shape that is narrowed downward in a rear view, leaving the first molded plates 52 and 52, and the upright device 51 having such a state can be folded. By leveling and leveling the surface layer of the field, the second molded plates 53L and 53R are rotated backward against the urging force of the torsion coil springs 30, 30. A ridge (external pitch) can be formed on both sides.

一方、左右両側の第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌは、上述のとおり、左右対称となる形状にて形成されることから、第一成形板５２と第二成形板５３Ｒ、及び、第一成形板５２と第二成形板５３Ｌを連結した状態で、前述のように支点軸５５を摺動させて外し、左右互いに入れ替えて、図７に示すように取り付ける。こうして工具なしで左右の成形板を付け替えることができる。 On the other hand, since the first molded plates 52 and 52 and the second molded plates 53R and 53L on the left and right sides are formed in a symmetrical shape as described above, the first molded plate 52 and the second molded plate 53R are formed. In a state where the first molded plate 52 and the second molded plate 53L are connected, the fulcrum shaft 55 is slid and removed as described above, and the left and right are interchanged, and attached as shown in FIG. In this way, the left and right molded plates can be replaced without tools.

その結果、図８に示すように、畝立装置５１全体としては、その平面中央に二本の回動軸５４・５４が、軸線をハ字状になるようにして配設されることとなり、前記支点軸５５・５５を各々機体外方に摺動することで、第三成形板側掛止部５３ｃ・５３ｃが支点軸５５・５５から外れ、畝立装置５１の左右中央に位置する第二成形板５３Ｒ・５３Ｌは各々機体後方に回動することができる。 As a result, as shown in FIG. 8, as the entire upright device 51, the two rotation shafts 54 and 54 are arranged in the center of the plane so that the axis is in a C-shape, By sliding the fulcrum shafts 55 and 55 outward from the machine body, the third molded plate side latching portions 53 c and 53 c are disengaged from the fulcrum shafts 55 and 55, and are located at the left and right centers of the upright device 51. Each of the molding plates 53R and 53L can be rotated rearward of the machine body.

つまり、畝立装置５１全体としては、第一成形板５２・５２を残して、背面視にて台形状に左右中央を開くことが可能となり、このような状態からなる畝立装置５１によって圃場の表層部を均し、整地することで、土壌に押されて捻りコイルバネ３０・３０・・・の付勢力に抗して第二成形板５３Ｌ・５３Ｒが後方へと回動され、機体左右中央に畝（内盛り）を形成することができるのである。 That is, as the whole standing apparatus 51, it is possible to open the left and right center in a trapezoidal shape in a rear view while leaving the first molded plates 52 and 52, and the standing apparatus 51 having such a state can By leveling and leveling the surface layer, the second molded plates 53L and 53R are rotated backward against the urging force of the torsion coil springs 30, 30. A wrinkle (inner pit) can be formed.

このように、本発明においては、走行部４の後部にローター耕耘装置５を配設し、該ローター耕耘装置５のロータリー２１の上方を覆うロータリーカバー２３を備える管理機１において、前記ロータリーカバー２３の後端部に、着脱可能、かつ、上下回動自在に取り付けられ、左右対称に構成される左右一対の第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌとを備え、該第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌは、それぞれ左右一側に斜辺を有し、該斜辺に、筒状部材５２ａ・５３ａ・５３ａや回動軸５４等からなるヒンジ部をそれぞれ設けて第一成形板５２・５２と第二成形板５３Ｒ・５３Ｌを回動自在に連結し、前記左右の第一成形板５２・５２を機体左右中央でロータリーカバー２３に固定し、左右の第二成形板５３Ｒ・５３Ｌを第一成形板５２・５２に対してヒンジにより回動自在に支持する状態と、前記左右の第一成形板５２・５２を機体左右両側でロータリーカバー２３に固定し、左右の第二成形板５３Ｒ・５３Ｌを第一成形板５２・５２に対してヒンジにより回動自在に支持する状態と、に切り替え可能に構成することとしている。 Thus, in the present invention, the rotor cover 5 is disposed at the rear of the traveling unit 4, and in the management machine 1 including the rotary cover 23 covering the rotary 21 of the rotor tiller 5, the rotary cover 23 The rear end portion includes a pair of left and right first molding plates 52 and 52 and second molding plates 53R and 53L that are detachably attached and turnable up and down and configured symmetrically. The forming plates 52 and 52 and the second forming plates 53R and 53L each have a hypotenuse on one side of the left and right sides, and a hinge portion comprising a cylindrical member 52a, 53a, 53a, a rotating shaft 54, etc. is provided on the hypotenuse. The first molded plates 52 and 52 and the second molded plates 53R and 53L are rotatably connected, and the left and right first molded plates 52 and 52 are fixed to the rotary cover 23 at the center of the left and right sides of the machine body. Molded plate 53R A state in which 53L is rotatably supported by hinges with respect to the first molding plates 52 and 52, and the left and right first molding plates 52 and 52 are fixed to the rotary cover 23 on both the left and right sides of the machine body, and the left and right second moldings are performed. The plates 53R and 53L are configured to be switchable between a state in which the plates 53R and 53L are rotatably supported by hinges with respect to the first molded plates 52 and 52.

このような構成とすることで、耕耘作業に用いる畝立装置５１によって、畝立て作業を行うことが可能となる。その結果、畝立て作業機を別途設ける必要がなくなり、工具を用いた脱着作業の煩わしさが解消されるばかりか、管理機１全体の重量軽減も図られ、作業者が管理機１を操作するうえで、操作性が向上する。また、畝立て作業の際には左右に配置される成形板の取付位置を互いに入れ替えることで、容易に「外盛り」から「内盛り」への切換えを行うことが可能となる。よって一畝ごとの形成が可能となり、畝立て作業時間の短縮化が図られ効率的である。 By setting it as such a structure, it becomes possible to perform a standing work by the standing apparatus 51 used for a tilling work. As a result, it is not necessary to separately provide a vertical work machine, and not only the trouble of detaching work using tools is eliminated, but also the weight of the entire management machine 1 is reduced, and the operator operates the management machine 1. In addition, the operability is improved. In addition, during the uprighting operation, it is possible to easily switch from “external pitch” to “internal pitch” by exchanging the mounting positions of the molding plates arranged on the left and right with each other. Therefore, it is possible to form every kite, and it is efficient because it shortens the erection work time.

つまり、「外盛り」の場合、一畝を形成するには往復の畝立て作業を必要とするが、「内盛り」の場合には、一回の前進走行作業で一畝を形成することができる。 In other words, in the case of “outside pitching”, a reciprocating upright work is required to form a gutter, but in the case of “inside pitching”, a glance can be formed by a single forward running operation. it can.

また、本発明においては、前記第一成形板５２・５２、及び第二成形板５３Ｒ・５３Ｌの左右他側の側辺には、それぞれ縁部５２ｄ・５２ｄ・５３ｄ・５３ｄを形成し、左右の第一成形板５２・５２の縁部５２ｄ・５２ｄ同士、または、左右の第二成形板５３Ｒ・５３Ｌの縁部５３ｄ・５３ｄ同士を当接させて固定可能に構成することとしている。 In the present invention, edge portions 52d, 52d, 53d, and 53d are formed on the left and right sides of the first molded plates 52 and 52 and the second molded plates 53R and 53L, respectively. The edge portions 52d and 52d of the first molded plates 52 and 52, or the edge portions 53d and 53d of the left and right second molded plates 53R and 53L are brought into contact with each other and can be fixed.

このような構成とすることで、「外盛り」仕様であっても「内盛り」仕様であっても縁部５２ｄ・５２ｄ（５３ｄ・５３ｄ）同士を連結固定することにより、左右の成形板（第一成形板５２・５２、及び第二成形板５３Ｒ・５３Ｌ）を一枚の板状に一体化して、均平作業が容易にできるようになる。また、連結を解除することにより容易に「外盛り」仕様と「内盛り」仕様に変更可能となる。 By adopting such a configuration, the right and left molded plates (53d and 53d) are connected and fixed to each other regardless of whether the specification is “outside” or “inside”. The first molding plates 52 and 52 and the second molding plates 53R and 53L) are integrated into a single plate shape so that the leveling operation can be easily performed. In addition, it is possible to easily change to the “externally-filled” specification and “internally-filled” specification by releasing the connection.

［畝立装置５１の固定構造］
次に、本発明に係る畝立装置５１を固定するための固定構造の詳細について、図９、及び図１０を用いて説明する。 [Fixing structure of upright device 51]
Next, details of a fixing structure for fixing the upright device 51 according to the present invention will be described with reference to FIGS. 9 and 10.

畝立装置５１は支点軸５５を中心として回動自在としたときは、均平板として作用する。そして、「外盛り」の畝立て作業を行う場合には、第二成形板５３Ｒ・５３Ｌを回動軸５４・５４を中心として回動自在として、第一成形板５２・５２を固定手段により固定して作業を行う。 When the upright device 51 is rotatable about the fulcrum shaft 55, it functions as a flat plate. Then, when performing the “outside-laying” erecting operation, the second molded plates 53R and 53L are rotatable about the rotation shafts 54 and 54, and the first molded plates 52 and 52 are fixed by the fixing means. And work.

前記固定手段は耕深調節バー２５の下端部に設けられ、前記耕深調節バー２５は上下方向に延出する棒状部材より形成され、支持ブラケット２４に摺動自在に挿通される。耕深調節バー２５の前面部には、側面視半円形状の凹部が一定間隔を有して複数設けられており、該凹部の一部が、支持ブラケット２４の側面を左右方向に貫設する固定ピン９によって掛止されることで、耕深調節バー２５は支持ブラケット２４に固定保持される。 The fixing means is provided at the lower end portion of the tilling depth adjusting bar 25, and the tilling depth adjusting bar 25 is formed of a bar-like member extending in the vertical direction and is slidably inserted into the support bracket 24. A plurality of semicircular recesses in a side view are provided on the front surface portion of the tilling depth adjustment bar 25 with a constant interval, and a part of the recesses penetrates the side surface of the support bracket 24 in the left-right direction. By being hooked by the fixing pin 9, the tilling depth adjustment bar 25 is fixedly held by the support bracket 24.

耕深調節バー２５の下端部には、平板状の底板１９が、後方に向かって突設される。前記底板１９は平面視にて前方に向かって窄む台形状に形成され、側面視にて耕深調節バー２５と略直角方向に溶着されている。 A flat bottom plate 19 is provided at the lower end of the tilling depth adjustment bar 25 so as to protrude rearward. The bottom plate 19 is formed in a trapezoidal shape that narrows forward in plan view, and is welded to the tilling depth adjustment bar 25 in a substantially right angle direction in side view.

底板１９の後端部の左右中央には、上方に突設する２本の固定部材５６・５６が溶着されており（図２を参照）、耕深調節バー２５を最下位置から上方に摺動させることで、固定部材５６・５６も一体となって上方へと移動し、畝立装置５１の後面下端部、即ち第一成形板５２の後面下端部に前記固定部材５６・５６が掛止され、畝立装置５１が固定保持される。そして、均平作業時や畝立て作業（「外盛り」）時に土壌に押されて、畝立装置５１が後上方へと浮上らないような構成となっている。 Two fixing members 56 and 56 projecting upward are welded to the left and right center of the rear end portion of the bottom plate 19 (see FIG. 2), and the tilling depth adjusting bar 25 is slid upward from the lowest position. By moving, the fixing members 56 and 56 also move upward together, and the fixing members 56 and 56 are hooked at the lower end of the rear surface of the upright device 51, that is, the lower end of the rear surface of the first molding plate 52. The upright device 51 is fixedly held. And it is the structure which is pushed by soil at the time of leveling work or standing work ("outside arrangement"), and the standing apparatus 51 does not float up rearward.

一方、「内盛り」の畝立て作業を行う場合には、図８に示すように畝立装置５１の左右中央の第二成形板５３Ｒ・５３Ｌが後方に回動自在とされ、左右外側の第一成形板５２・５２が固定手段となる固定部材５８・５８によって固定保持される。 On the other hand, when performing the “inner laying” erecting operation, as shown in FIG. 8, the second forming plates 53R and 53L at the center of the left and right sides of the erecting device 51 are rotatable rearwardly, The single molded plates 52 and 52 are fixed and held by fixing members 58 and 58 serving as fixing means.

即ち、図１０に示すように、第一成形板５２の縁部５２ｄに設けた固定孔５２ｅとロータリーカバー２３の左右両側板の下部に開口した固定孔２３ａにロッド等で構成した固定部材５８の両端を掛止して第一成形板５２を固定する。 That is, as shown in FIG. 10, the fixing member 58 formed of a rod or the like in the fixing hole 52 e provided in the edge 52 d of the first molding plate 52 and the fixing hole 23 a opened in the lower part of the left and right side plates of the rotary cover 23. The first molded plate 52 is fixed by engaging both ends.

前記固定部材５８は本実施例では、両端部にフック部を有する棒状部材から構成され、該フック部がロータリーカバー２３と、畝立装置５１とに各々設けられる固定孔２３ａ・５２ｅに挿入して掛止する構成としている。また、畝立装置５１を固定しない場合は、ロータリーカバー２３の左右両側板の下部に開口した固定孔２３ａ・２３ａに掛止して収納する構成とし、紛失を防止する構成とすすることもできる。 In this embodiment, the fixing member 58 is composed of a rod-like member having hook portions at both ends, and the hook portions are inserted into the fixing holes 23a and 52e provided in the rotary cover 23 and the upright device 51, respectively. It is configured to be hooked. Further, when the upright device 51 is not fixed, it can be configured to be latched and stored in the fixing holes 23a and 23a opened at the lower portions of the left and right side plates of the rotary cover 23, and can be configured to prevent loss. .

なお、固定部材５８はターンバックルで構成して長さを調節可能に構成することもできる。また、固定部材５８・５８は、本実施例のような棒状部材に限定されるものではなく、例えば、フック部を有するチェーン等で形成してもよい。 In addition, the fixing member 58 can also be comprised with a turnbuckle so that length can be adjusted. Further, the fixing members 58 and 58 are not limited to the rod-like members as in the present embodiment, and may be formed of, for example, a chain having a hook portion.

このような構成とすることで、他に別途機構を設けることもなく簡単な構造によって、畝立装置５１を固定保持することができ経済的である。 By adopting such a configuration, the upright device 51 can be fixed and held with a simple structure without providing any other mechanism, which is economical.

１管理機
４走行部
５ローター耕耘装置
２１ロータリー
２３ロータリーカバー
５２第一成形板
５２ａ筒状部材
５２ｄ縁部
５３Ｒ第二成形板
５３Ｌ第二成形板
５３ａ筒状部材
５３ｄ縁部
５４回動軸 DESCRIPTION OF SYMBOLS 1 Management machine 4 Traveling part 5 Rotor tillage device 21 Rotary 23 Rotary cover 52 1st shaping | molding board 52a Cylindrical member 52d Edge 53R 2nd shaping | molding board 53L 2nd shaping | molding board 53a Cylindrical member 53d Edge 54 Turning axis

Claims

In the management machine (1) provided with a rotary cover (23) which covers the upper part of the rotary (21) of the rotor tillage device (5) by disposing the rotor tillage device (5) at the rear part of the traveling unit (4). A pair of left and right first molding plates (52) and a second molding plate (53), which are detachably attached to the rear end of the rotary cover (23) and are pivotable up and down and configured symmetrically. The first molded plate (52) and the second molded plate (53) each have a hypotenuse on one side of the left and right sides, and a hinge portion is provided on the hypotenuse, respectively. A plate (53) is rotatably connected, and the left and right first molded plates (52, 52) are fixed to the rotary cover (23) at the center of the left and right sides of the machine body, and the left and right second molded plates (53L, 53R). Can be rotated by a hinge with respect to the first molded plate (52, 52) A folding state of the forming plate when lifting the outer Sheng work, first molded plate of the left and right (52, 52) fixed to the rotary cover (23) in the machine body left and right sides, left and right second mold plates (53L, 53R) can be replaced with the bent state of the molded plate during the internal work in which the first molded plate (52, 52) is rotatably supported by a hinge, and the first molded plate (52) , And the left and right sides of the second molded plate (53) are bent upward to form edges (52d, 53d), and fixing holes (52e, 53e) are formed in the edges (52d, 53d). And the edges (52d, 52d) of the left and right first molded plates (52, 52), or the edges (53d, 53d) of the left and right second molded plates (53L, 53R). It is configured so that it can be fixed by contact. The first molded plate is hooked at both ends of the edge portions (52d, 52d) of the plate (52, 52) and the fixing members (58, 58) hooked to the left and right side plates of the rotary cover (23). A management machine characterized by holding (52, 52) fixedly .