JP4400440B2

JP4400440B2 - Combine

Info

Publication number: JP4400440B2
Application number: JP2004361265A
Authority: JP
Inventors: 一志大原; 道男石川; 西崎　　宏; 次郎山本
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2004-12-14
Filing date: 2004-12-14
Publication date: 2010-01-20
Anticipated expiration: 2024-12-14
Also published as: JP2006166751A

Description

この発明は、コンバインに関する。 This invention is related to co-Nbain.

従来からこの種の汎用コンバインは、比較的低い丈の茎稈を、左右両側からラグベルトで挟持して後方に搬送しながら途中で株元を刈取り、そのまま後方の掻込みオーガーまで搬送するロークロップヘッダの構成で、茎稈は、更に、前記掻込みオーガーから搬送コンベヤ装置を経由して全稈投入型の脱穀装置に供給される構成としている。そして、このような汎用型のコンバインは、刈取装置として円板刈刃を使用し、刈取条ごとに軸架した前記円板刈刃を、それぞれ油圧モータで駆動する構成となっている。 Conventionally, this type of general-purpose combiner is a row crop header that cuts the stock along the way while holding the stems of relatively low length with rug belts from both left and right sides and conveying them back to the rear auger auger. In this configuration, the stalk is further supplied from the scraping auger to the full-throw-in type threshing device via the transfer conveyor device. Such a general-purpose combiner uses a disc cutting blade as a cutting device, and each of the disc cutting blades pivoted for each cutting strip is driven by a hydraulic motor.

例えば、特開平１１−７５４９５号の公開特許公報（特許文献１参照）に、上記技術が記載され公開されている。すなわち、該公開特許公報に記載されている技術構成は、油圧モータで刈刃を回転させて茎稈を刈り取る刈取装置と、搬送始端部で圃場の茎稈を案内し、刈取後の茎稈を搬送して後方のオーガに供給する搬送装置とを備えた刈取部を横方向に複数並設して刈取前処理部を構成し、油圧モータに対する油路を開閉する切換弁を備えた油圧モータ用の油圧回路を、機体側の刈取前処理部を昇降する油圧シリンダや他のアクチュエータを操作する油圧回路の戻り油路に接続して、機体側の油圧回路から作動油で油圧モータを駆動するよう構成してある。
特開平１１−７５４９５号公報 For example, the above technique is described and disclosed in Japanese Patent Application Laid-Open No. 11-75495 (see Patent Document 1). That is, the technical configuration described in the published patent publication is a cutting device that rotates a cutting blade with a hydraulic motor to cut the pedicle, guides the pedicle in the field at the transport start end, and removes the pedicle after cutting. For a hydraulic motor having a switching valve that opens and closes an oil passage to the hydraulic motor by constructing a pre-cutting processing unit by arranging a plurality of cutting units provided with a conveying device that conveys and supplies the rear auger in a horizontal direction. The hydraulic circuit is connected to the return oil path of the hydraulic circuit that operates the hydraulic cylinder and other actuators that move up and down the cutting unit on the airframe side, and the hydraulic motor is driven by hydraulic oil from the hydraulic circuit on the airframe side. It is configured.
JP-A-11-75495

上述した従来公知のコンバインの油圧装置は、オイルタンクが車台の前部、乃至は中央部に搭載されて構成されているから、コンバイン車台の重心位置が前寄りになり、前バランスの傾向があった。したがって、従来のコンバインは、前バランスの場合、走行に伴って車台の前後方向への揺れが大きくなり、不安定となって刈刃が上下して高刈や低刈りを繰り返して刈跡が一定せず、ヘッドロスが増加する課題があった。 The above-described conventionally known combine hydraulic device has an oil tank mounted on the front or center of the chassis, so that the position of the center of gravity of the combine chassis is closer to the front, and there is a tendency for front balance. It was. Therefore, in the case of a conventional combine, in the case of the front balance, the conventional combine becomes more unstable in the longitudinal direction of the chassis as it travels, becomes unstable, the cutting blade moves up and down, repeats high cutting and low cutting, and the cut remains constant However, there was a problem that the head loss increased.

また、油圧モータ用の油圧回路に設けたオイルタンクとオイルフィルターは、従来から油温の上昇が常に課題となっていた。In addition, oil tanks and oil filters provided in hydraulic circuits for hydraulic motors have always been subject to increased oil temperature.
また、従来のコンバインの油圧回路は、回転刈刃駆動用の油圧モータに作動油を供給する循環回路に圧抜き機構が無いために、刈取作業中に回転刈刃が外部抵抗を受けて停止したとき、油圧ポンプを停止しても油圧モータの間にある循環回路中の作動油（油圧）が抜けず、圧力がこもる状態にあり、回転刈刃の逆転が不能の状態で外部抵抗から回避できない危険性の高い構成であった。In addition, the conventional combine hydraulic circuit has no pressure relief mechanism in the circulation circuit that supplies hydraulic oil to the hydraulic motor for driving the rotary cutting blade, so the rotary cutting blade is stopped due to external resistance during the cutting operation. When the hydraulic pump is stopped, the hydraulic oil (hydraulic pressure) in the circulation circuit between the hydraulic motors is not released, the pressure is in a state of being accumulated, and the reverse rotation of the rotary blade cannot be avoided from the external resistance It was a highly dangerous configuration.

この発明は、上記課題を解決するために、全稈投入型の扱室と選別室を備えた脱穀装置（２）を、茎稈投入口（１６）を前側に位置させ排塵口（１７）を後側に位置させて車台（１）上に搭載し、該脱穀装置（２）の排塵口（１７）には上側から排塵カバー（９）を連結して排塵口（１７）からの排塵物を排塵カバー（９）で地面側に案内する構成とし、該脱穀装置（２）の前側の茎稈投入口（１６）に刈取前処理装置（５）側の搬送コンベヤ装置（１８）の搬送終端部を上下回動自由に枢着して連結し、該刈取前処理装置（５）を、左右一対の分草杆（２０，２０）と、該分草杆（２０，２０）の後部に設けた左右一対のラグベルト（２１，２１）からなる茎稈搬送装置（３）と、該茎稈搬送装置（３）の下方に縦軸で軸装した回転刈刃（４）とを１条分として一体に枠組みし、これを横方向に４条分配列した構成とし、前記茎稈搬送装置（３）の左右一対のラグベルト（２１，２１）を上下２段に設けて茎稈の抜け落ちがないように保持し、回転刈刃（４）で株元を刈り取られた茎稈を該左右一対のラグベルト（２１，２１）で保持して後部上方の掻込みオーガー（２４）まで搬送する構成とし、前記４条分の４つの回転刈刃（４）に伝動チェン（２５）を介して伝動可能に夫々接続した４個の油圧モータ（６）のうち、左側の２つの油圧モータを直列に接続して左側直列回路（７ａ）を構成し、右側の２つの油圧モータを直列に接続して右側直列回路（７ｂ）を構成し、該左側直列回路（７ａ）と右側直列回路（７ｂ）との分岐部に、左側直列回路（７ａ）と右側直列回路（７ｂ）とに油量を等量で分配しながら供給できる分流弁（３６）を設け、前記４個の油圧モータ（６）が左側直列回路（７ａ）と右側直列回路（７ｂ）とに圧送されて循環する等量の作動油によって駆動される構成とし、該油圧モータ（６）を駆動するための油圧回路にオイルタンク（８）とオイルフィルター（３７）を接続し、前記オイルタンク（８）を脱穀装置（２）の後部上側に設けたタンク支持台（４０）上に載置して設けると共に該オイルタンク（８）の近くにオイルフィルター（３７）を設け、該オイルタンク（８）とオイルフィルター（３７）とが、排塵カバー（９）の上側で且つ脱穀装置（２）の入力プーリ（１０）に一体に設けたファン（１１）による風の風下側に配置される構成とし、脱穀装置（２）の側部と上側位置とにオイルタンク（８）側に風を案内する第１風案内板（４１）と第２風案内板（４２）とを設け、該脱穀装置（２）の側部に設けた第１風案内板（４１）は車体の走行に伴って流れてくる風をオイルタンク（８）側に案内して吹き付け、脱穀装置（２）の上側位置に設けた第２風案内板（４２）は車体の走行に伴って脱穀装置（２）の上面に沿って後方へ流れる風をオイルタンク（８）とオイルフィルター（３７）とに向けて案内する構成とし、前記左側直列回路（７ａ）及び右側直列回路（７ｂ）の各直列に接続した２つの油圧モータの間に設けた循環回路（５７）に圧抜き回路（５５）を接続し、該圧抜き回路（５５）に圧抜きバルブ（５６）を設け、油圧ポンプ（３５）を始動して作動油を駆動回路（５８）から最初の油圧モータへ圧送し、更に循環回路（５７）を経て次の油圧モータへ圧送が開始されると駆動回路（５８）のパイロット圧によって圧抜きバルブ（５６）が閉じ、油圧ポンプ（３５）を停止して駆動回路（５８）への作動油の圧送がなくなると、ばねの張力によって圧抜きバルブ（５６）が自動的に開き、圧抜き回路（５５）がオイルタンク（８）に連通状態となって２つの油圧モータ間の循環回路（５７）の作動油がタンク（８）側に循環する構成としたことを特徴とするコンバインとした。 In order to solve the above-mentioned problem, the present invention provides a threshing device (2) equipped with a whole-chassis-type handling chamber and a sorting chamber, with the stem-and-mouth input port (16) positioned on the front side and the dust discharge port (17). was located to the rear and mounted on the chassis (1), said threshing device (2) of Haichiriguchi (17) to discharge the dust outlet to connect the dust-exhaust from the upper cover (9) from (17) the clean room was a structure that guides the ground side dust-exhaust cover (9), dehydration cereal device (2) conveyor of the front side of the preparative cutting the stem稈投inlet (16) pre-processing device (5) side The conveying terminal end of the device (18) is pivotally connected so as to freely rotate up and down, and the cutting pretreatment device (5) is connected to a pair of left and right weed folds (20, 20) and the weed fold (20 , 20) a pedicle conveying device (3) composed of a pair of left and right lug belts (21, 21) provided at the rear portion, and a rotary cutting blade (axis) mounted on the vertical axis below the pedicle conveying device (3) ) Were framework together as Article 1 minute, which was the transverse direction in Article 4 minute sequences with the structure, provided on the stem culm conveying device two upper and lower stages of the pair of left and right Raguberuto (21, 21) of (3) The stems, which are held so that the stems do not fall off and are cut off by the rotary cutting blade (4) , are held by the pair of left and right lug belts (21, 21), and the rear auger (24 ) Of the four hydraulic motors (6) connected to the four rotary cutting blades (4) for the four strips via the transmission chain (25), respectively , on the left side. A hydraulic motor is connected in series to form a left series circuit (7a), and two right hydraulic motors are connected in series to form a right series circuit (7b). The left series circuit (7a) and the right series The left series circuit (7a) and the right series circuit ( b) is provided with a diverter valve (36) capable of supplying oil in an equal amount, and the four hydraulic motors (6) are pumped to the left series circuit (7a) and the right series circuit (7b). The oil tank (8) and the oil filter (37) are connected to a hydraulic circuit for driving the hydraulic motor (6), and the oil tank (8) the oil filter (37) near the oil tank (8) with a threshing device (2) is placed a tank support base provided on the upper side (40) on the part after it provided provided, the oil tank (8 ) And the oil filter (37) are arranged above the dust cover (9) and on the leeward side of the wind by the fan (11) provided integrally with the input pulley (10) of the threshing device (2). And the side and upper position of the threshing device (2) Provided with a first wind guide plate (41) and a second wind guide plate (42) for guiding the wind toward the oil tank (8), and provided on the side of the threshing device (2) (41) guides and blows the wind that flows as the vehicle travels toward the oil tank (8), and the second wind guide plate (42) provided at the upper position of the threshing device (2) travels the vehicle. Accordingly, it is configured to guide the wind flowing backward along the upper surface of the threshing device (2) toward the oil tank (8) and the oil filter (37), and the left series circuit (7a) and the right series circuit ( 7b) a pressure relief circuit (55) is connected to the circulation circuit (57) provided between the two hydraulic motors connected in series, and a pressure relief valve (56) is provided to the pressure relief circuit (55), Start the hydraulic pump (35) to pressure the hydraulic oil from the drive circuit (58) to the first hydraulic motor Further, when the pressure supply to the next hydraulic motor is started through the circulation circuit (57), the pressure relief valve (56) is closed by the pilot pressure of the drive circuit (58), and the hydraulic pump (35) is stopped to drive the drive circuit. When the hydraulic oil is not pumped to (58), the pressure relief valve (56) is automatically opened by the tension of the spring, and the pressure relief circuit (55) is brought into communication with the oil tank (8) so that the two hydraulic pressures can be obtained. hydraulic oil circulation circuit between the motor (57) is a combined, characterized in that it has a structure in which circulates in the tank (8) side.

この発明によると、オイルタンク（８）を後部上側のタンク支持台（４０）上に載置したから、車体の重心位置が後方に移動して安定したバランスが確保でき、作業時にも前後方向の揺れが少なくなり、刈高さを略一定に保ちながら刈跡も整然とした走行ができるものとなった。したがって、ヘッドロスも大幅に減少し高精度の下に収穫作業ができる。 According to the invention, since the location placing the oil tank (8) on the rear upper side of the tank support base (40), the body center of gravity is moved rearward secured stable balance, when also the longitudinal direction of the work shaking is reduced, Kariato also became what may orderly run while Chi coercive mowing height substantially constant. Accordingly, the head loss even Ru can harvesting under greatly reduced precision.

また、比較的高い位置にオイルタンク（８）があるから、塵埃の降り掛かりもなくなり、埃が溜まらない。
そして、オイルタンク（８）を、排塵カバー（９）の上側に配置することによって、オイルの補充や交換等のメンテナンスに際して、オイルが外部に漏れて排塵カバー（９）の上面に流下しても、該排塵カバー（９）の傾斜によって地面に流れ落ちて車台（１）上に溜まることがない。 Moreover, a relatively high position because there is an oil tank (8), no remote Furikaka of dusts, the balls should not be dust.
Then, the O Irutanku (8), by placing on the upper side of the dust-exhaust cover (9), when the maintenance of replenishment or replacement of the oil, the oil may leak to the outside and flows down to the upper surface of the dust-exhaust cover (9) However, it does not flow down to the ground due to the inclination of the dust cover (9) and accumulate on the chassis (1) .

また、オイルタンク（８）とオイルフィルター（３７）は、脱穀装置（２）の入力プーリ（１０）に一体に設けたファン（１１）の風下側に配置することにより、作業中に風を吹き付けて冷却され、油温上昇を防止すると共に、オイルタンク（８）の周囲に塵埃が溜まらない。そして、脱穀作業中のみファン（１１）が回転して起風し、冷却するが、脱穀装置（２）を停止した作業中断中にはファン（１１）の回転も止まり、無駄な動力の損失がない。 In addition , the oil tank (8) and the oil filter (37) are arranged on the leeward side of the fan (11) provided integrally with the input pulley (10) of the threshing device (2), thereby blowing air during work. As a result, the oil temperature is prevented from rising and dust does not collect around the oil tank (8) . The fan (11) rotates and winds and cools only during the threshing operation, but the rotation of the fan (11) also stops during the operation interruption when the threshing device (2) is stopped, and the loss of useless power is lost. Absent.

また、オイルタンク（８）とオイルフィルター（３７）は、コンバインが前進するのにともなって後方へ流れるように発生する風が、第１風案内板（４１）及び第２風案内板（４２）によって案内されて吹き付けられ、冷却作用と防塵作用が行われて油温の上昇が止められると共に、埃が後方に吹き飛ばされて溜まることがない。The oil tank (8) and the oil filter (37) are arranged such that the wind generated so as to flow rearward as the combine moves forward is the first wind guide plate (41) and the second wind guide plate (42). Are guided and sprayed, and the cooling and dust-proofing operations are performed to prevent the oil temperature from rising, and the dust is not blown back and collected.

また、２つの油圧モータ間の循環回路（５７）に圧抜きバルブ（５６）を有する圧抜き回路（５５）を接続したから、駆動中に油圧ポンプ（３５）を停止すると、自動的に圧抜きバルブ（５６）が作動して開き循環回路（５７）の作動油が圧抜回路（５５）から圧抜きバルブ（５６）を経由してオイルタンク（８）に循環して回路中の油圧がなくなる。したがって、回転刈刃（４）は、伝動チェン（２５）を介して油圧モータ（６）に連結しているが、フリーの状態で回転が自由になり、抵抗のない状態に障害物を取り除くことができる。 Since the pressure release circuit (55) having the pressure release valve (56) is connected to the circulation circuit (57) between the two hydraulic motors, the pressure release is automatically performed when the hydraulic pump (35) is stopped during driving. The valve (56) is activated and the hydraulic fluid in the opening circulation circuit (57) circulates from the pressure relief circuit (55) to the oil tank (8) via the pressure relief valve (56), and the hydraulic pressure in the circuit disappears. . Therefore, the rotary cutting blade (4) is connected to the hydraulic motor (6) via the transmission chain (25), but the rotation is free in a free state and the obstacle is removed in a state without resistance. It is Ru can.

まず、この発明の実施例は、車台１上に搭載した脱穀装置２と、その前方に、茎稈搬送装置３と回転刈刃４とからなる刈取前処理装置５を複数条配列して設けたコンバインであって、該刈取前処理装置５の回転刈刃４を伝動する油圧モータ６に接続した一連の油圧装置７を構成するオイルタンク８を、脱穀装置２の後方位置において、上部に装置して構成したものである。 First, according to the embodiment of the present invention, a threshing device 2 mounted on a chassis 1 and a plurality of pre-cutting processing devices 5 including a stalk conveying device 3 and a rotary cutting blade 4 are arranged in front of the threshing device 2. An oil tank 8 constituting a series of hydraulic devices 7 which are combined and connected to a hydraulic motor 6 that transmits the rotary cutting blade 4 of the pre-cutting device 5 is installed at the upper position at the rear position of the threshing device 2. It is configured.

この種のコンバインは、従来から油圧装置７のオイルタンク８をキャビンやグレンタンクの下側に搭載する構成が多く、車体の重量バランスが前寄りに偏る傾向が大きいことが知られている。そのため、従来型コンバインは、作業中に車体の前後揺動が激しくなり、それに伴って刈刃も上下移動して高刈りや低刈りを繰り返して刈跡が乱れる課題と、併せて、ヘッドロスの発生があった。 Conventionally, this type of combiner is known to have a structure in which the oil tank 8 of the hydraulic device 7 is mounted on the lower side of the cabin or the Glen tank, and the weight balance of the vehicle body tends to be biased toward the front. For this reason, the conventional combine makes the body swing back and forth during work, and the cutting blades move up and down accordingly. was there.

この発明は、前述のようにオイルタンク８を脱穀装置２の後部で上側に搭載することによって、コンバイン車体の重量バランスを改善して従来型の課題を解消するものである。
以下、この発明の実施例について、図面に基づき具体的に説明する。 In the present invention, the oil tank 8 is mounted on the upper side at the rear portion of the threshing device 2 as described above, thereby improving the weight balance of the combine vehicle body and eliminating the conventional problems.
Embodiments of the present invention will be specifically described below with reference to the drawings.

まず、脱穀装置２は、図１、及び図２に示すように、全稈投入型の扱室と選別室とを備え、クローラ１５を有する車台１上に、茎稈供給口１６を前側に位置し、排塵口１７を後側に位置して進行方向に沿わせて搭載している。そして、脱穀装置２は、図面に示すように、前側の茎稈供給口１６にはフィーダハウス１８（実施例の説明では「搬送コンベヤ装置１８」と云う）の搬送終端部を上下回動自由に枢着して連結し、後側の排塵口１７には上側から排塵カバー９を連結して排塵物を圃場の地面側に案内する構成としている。 First, as shown in FIG. 1 and FIG. 2, the threshing device 2 includes an all-throw-in type handling chamber and a sorting chamber, and the stalk supply port 16 is positioned on the front side of the chassis 1 having the crawler 15. The dust outlet 17 is mounted on the rear side along the traveling direction. As shown in the drawing, the threshing device 2 allows the front end of the shoot supply port 16 to freely rotate the conveyance end portion of the feeder house 18 (referred to as “conveyance conveyor device 18” in the description of the embodiment). It is connected in a pivotal manner, and a dust cover 9 is connected to the rear dust outlet 17 from above to guide the dust to the ground side of the field.

つぎに、刈取前処理装置５は、図１、及び図２に示すように、前部から左右一対の分草杆２０、２０と、その後部に左右一対のラグベルト２１、２１からなる茎稈搬送装置３と、該茎稈搬送装置３の下方に縦軸に軸装した回転刈刃４とを１条として一体に枠組みし、実施例の場合、これを横方向に４条配列して設けた構成としている。 Next, as shown in FIG. 1 and FIG. 2, the pre-cutting processing device 5 conveys a pedicle stick comprising a pair of left and right weed ridges 20 and 20 from the front and a pair of left and right lug belts 21 and 21 at the rear. The apparatus 3 and the rotary cutting blade 4 pivotally mounted on the vertical axis below the stalk transporting apparatus 3 are integrally formed as a single frame, and in the case of the example, this is arranged in four rows in the lateral direction. It is configured.

そして、ラグベルト２１，２１は、図２、及び図３に示すように、搬送始端部の遊動プーリ２２を低く、終端部の駆動プーリ２３を高くして側面視で傾斜させて設け、圃場の茎稈を左右両側からラグで係合して搬送しながら途中位置で株元が前記回転刈刃４で刈り取られると、そのまま係合保持して後部上方の掻込みオーガー２４まで搬送する構成としている。この場合、ラグベルト２１、２１は、図面から解るように、上下２段に設けて茎稈の抜け落ちがないように上下で保持する構成としている。 As shown in FIGS. 2 and 3, the lug belts 21 and 21 are provided such that the floating pulley 22 at the conveyance start end is low and the drive pulley 23 at the end is high and inclined in a side view. When the stock is cut by the rotary cutting blade 4 at a midway position while engaging and transporting the hooks with the lugs from both the left and right sides, the hooks are engaged and held as they are and are transported to the rear auger 24. In this case, as will be understood from the drawings, the lug belts 21 and 21 are provided in two upper and lower stages and are held up and down so that the stems do not fall off.

そして、回転刈刃４は、図面に示すように、油圧モータ６から伝動チェン２５によって伝動される構成としている。
つぎに、掻込みオーガー２４は、図１に示すように、前記４条の刈取条数に対応させた横幅に形成し、外表面に左右両端から内側に搬送する収集螺旋２６と、前記搬送コンベヤ装置１８の始端部入口に対応させて掻込みクランクフィンガー２７とを設け、刈取茎稈を収集して前記搬送コンベヤ装置１８の搬送始端部に供給できる構成としている。 And the rotary cutting blade 4 is set as the structure transmitted by the transmission chain 25 from the hydraulic motor 6, as shown to drawing.
Next, as shown in FIG. 1, the take-up auger 24 is formed in a lateral width corresponding to the number of the four cutting strips, and the collecting spiral 26 transported from the left and right ends to the inside on the outer surface, and the transport conveyor A scraping crank finger 27 is provided in correspondence with the start end inlet of the apparatus 18 so that the cutting stems can be collected and supplied to the transfer start end of the transfer conveyor apparatus 18.

なお、刈取前処理装置５は、図３、及び図４に示す実施例の場合、掻込みオーガー２４を軸架した側枠に枕扱ぎレバー２８を設け、このレバー２８を入り側（図面上、前側が枕扱ぎ位置）に操作すると、前部の分草杆２０が接地したままで後側の掻込みオーガー２４、搬送コンベヤ装置１８が脱穀装置２側を回動支点に上昇して、前記駆動プーリ２３を伝動する伝動軸２９を支点にして折り曲がって、図４に示すように、掻込みオーガー２４のすぐ前側に投入空間３０が広く開口する構成としている。 In the embodiment shown in FIGS. 3 and 4, the pre-cutting processing device 5 is provided with a pillow handle lever 28 on the side frame around which the take-up auger 24 is pivoted, and this lever 28 is placed on the entry side (on the drawing). When the front side is operated to the pillow handling position), the rear agitation auger 24 and the transport conveyor device 18 are raised to the threshing device 2 side as a pivotal fulcrum while the front weed 20 is grounded, As shown in FIG. 4, the charging space 30 is widened and opened in front of the take-up auger 24 by bending the transmission shaft 29 that transmits the drive pulley 23 as a fulcrum.

したがって、作業者は、コンバイン作業に先立って圃場の枕地から刈取った茎稈を、その投入空間３０から投入すると、駆動している掻込みオーガー２４から搬送コンベヤ装置１８に受け継がれて、脱穀装置２まで搬送されて供給され、枕扱作業を行うことができる。 Therefore, when the operator inputs the stems cut from the headland in the field prior to the combine operation from the input space 30, the operator transfers the stems from the driving auger 24 to the transport conveyor device 18 and threshing. It is conveyed to the apparatus 2 and supplied, and a pillow handling operation can be performed.

そして、実施例の刈取前処理装置５は、図５に示すように、搭載している図外のコンプレッサーに連結したホース３１の先端部にエアーノズル３２を接続して、茎稈搬送装置３の下部に臨ませて設けており、搬送途中の茎稈株元に吹き付けて付着している土や泥を吹き飛ばして取り除き、大豆等の場合の汚粒の発生を未然に防止する構成としている。 And the cutting pretreatment apparatus 5 of an Example connects the air nozzle 32 to the front-end | tip part of the hose 31 connected with the compressor outside the figure mounted, as shown in FIG. It is provided so as to face the lower part, and it is configured to blow away and remove soil and mud adhering by spraying on the stems and stems in the middle of conveyance to prevent generation of dirt in the case of soybeans and the like.

なお、エアーノズル３２は、図６に示すように、プラットホームの上側に装置して掻込みオーガー２４の下方に吹き付けて後方に土等を吹き飛ばす構成にしてもよく、この実施例でも汚粒が防止できる。更には、エアーノズル３２は、これを油圧モータ６に冷却風として吹き付けるように向けて構成すると、冷却作用が働いてモータの温度を下げて効率を高めることが出来る利点がある。３３は目抜き板を示している。 As shown in FIG. 6, the air nozzle 32 may be configured to be installed on the upper side of the platform and sprayed below the stirrer auger 24 to blow away dirt and the like. it can. Furthermore, if the air nozzle 32 is configured so as to be blown to the hydraulic motor 6 as cooling air, there is an advantage that the cooling action works to lower the temperature of the motor and increase the efficiency. Reference numeral 33 denotes a cut-out plate.

つぎに、油圧モータ６を駆動するための油圧装置（油圧回路）７について説明する。
まず、油圧装置７は、図７に示すように、４条の各回転刈刃４にそれぞれ伝動可能に接続した４個の油圧モータ６を、左側の２つ（左の２条）を直列に接続し、右側の２つ（右の２条）も直列に接続して左右両側にそれぞれ直列回路７ａ、７ｂ（左側直列回路７ａ，右側直列回路７ｂ）を構成する。そして、上記左右２つの直列回路７ａ、７ｂは、図７に示すように、油圧ポンプ３５に近い分岐部位に、左右に１対１の比率で等量に分配しながら油量を供給できるように分流弁３６を設け、並列回路に接続して構成している。そして、上記４個の油圧モータ６は、左右２つの直列回路７ａ、７ｂに圧送されて循環する等量の作動油によって駆動される構成としている。 Next, a hydraulic device (hydraulic circuit) 7 for driving the hydraulic motor 6 will be described.
First, as shown in FIG. 7, the hydraulic device 7 includes four hydraulic motors 6 connected to the four rotary cutting blades 4 so as to be capable of transmission, and the left two (left two) in series. The right two (right two) are connected in series to form series circuits 7a and 7b (left series circuit 7a and right series circuit 7b) on the left and right sides, respectively. As shown in FIG. 7, the two left and right series circuits 7a and 7b can supply the oil amount to the branch portion close to the hydraulic pump 35 while equally distributing the left and right at a one-to-one ratio. A shunt valve 36 is provided and connected to a parallel circuit. The four hydraulic motors 6 are configured to be driven by an equal amount of hydraulic oil that is pumped and circulated to the two left and right series circuits 7a and 7b.

そして、上記油圧装置７（油圧回路）は、図７に示すように、回路中にオイルタンク８とオイルフィルタ―３７を接続して一連の油圧回路７を構成している。なお、循環回路や駆動回路の圧抜き機構については後述する。 As shown in FIG. 7, the hydraulic device 7 (hydraulic circuit) forms a series of hydraulic circuits 7 by connecting an oil tank 8 and an oil filter 37 in the circuit. The pressure relief mechanism for the circulation circuit and the drive circuit will be described later.

以上のように構成された油圧装置７において、オイルタンク８は、図１、及び図２に示すように、脱穀装置２の後部上側に設けたタンク支持台４０上に載置して設けた構成としている。そして、この実施例では、オイルタンク８は、図１に示すように、オイルフィルター３７を近くに連結して設けており、更に、これらが、図２に示すように、排塵カバー９の上側に位置する構成となっている。 In the hydraulic device 7 configured as described above, the oil tank 8 is provided by being placed on the tank support 40 provided on the rear upper side of the threshing device 2 as shown in FIGS. 1 and 2. It is said. In this embodiment, as shown in FIG. 1, the oil tank 8 is provided with an oil filter 37 connected nearby, and further, these are arranged on the upper side of the dust cover 9 as shown in FIG. It is the composition located in.

したがって、コンバインは、上記のとおりオイルタンク８を後部上側のタンク支持台４０上に載置したから、車体の重心位置が後方に移動して安定したバランスが確保でき、作業時にも前後方向の揺れが少なくなり、刈り高さを略一定に保ちながら刈跡も整然とした走行ができるものとなった。したがって、コンバインは、ヘッドロスも大幅に減少し高精度の下に収穫作業ができる。 Therefore, since the combine places the oil tank 8 on the rear upper tank support base 40 as described above, the center of gravity of the vehicle body can move rearward to ensure a stable balance, and the front and rear shakes during work. The number of cuts was reduced, and the cuts were kept in order while keeping the cutting height almost constant. Therefore, the combine can greatly reduce head loss and can be harvested with high accuracy.

それに加えて、実施例は、比較的高い位置にタンク８があるから、塵埃の降りかかりもなくなり、埃が溜まらない利点がある。そして、オイルタンク８は、排塵カバー９の上側に装置することによって、オイルの補充や交換等のメンテナンスに際して、オイルが外部に漏れて排塵カバー９の上面に流下すると、カバーの傾斜によって地面に流れ落ちて車台上に溜まることがない特徴がある。 In addition, since the tank 8 is located at a relatively high position, the embodiment has an advantage that dust does not fall and dust does not accumulate. When the oil tank 8 is installed on the upper side of the dust cover 9 and maintenance such as oil replenishment or replacement is performed, if the oil leaks to the outside and flows down to the upper surface of the dust cover 9, the oil tank 8 is grounded due to the inclination of the cover. There is a feature that does not flow down and accumulate on the chassis.

つぎに、オイルタンク８とオイルフィルター３７は、図８に示すように、脱穀装置２の入力プーリ１０に一体にファン１１を取り付け、そのファン１１の風下側に位置する構成としている。 Next, as shown in FIG. 8, the oil tank 8 and the oil filter 37 are configured such that the fan 11 is integrally attached to the input pulley 10 of the threshing device 2 and is located on the leeward side of the fan 11.

このように構成すると、オイルタンク８とオイルフィルター３７は、従来から油温の上昇が常に課題となっていたが、この実施例の場合、ファン１１の風下側にあって、作業中に風を吹き付けて冷却され、油温上昇を防止すると共に、タンクの周囲に塵埃が溜まらない特徴がある。そして、この実施例は、脱穀作業中のみファン１１が回転して起風し、冷却するが、脱穀装置２を停止した作業中断中にはファン１１の回転も止まり、無駄な動力の損失がない特徴もある。 With this configuration, the oil tank 8 and the oil filter 37 have always been subject to an increase in oil temperature. In this embodiment, however, the oil tank 8 and the oil filter 37 are on the leeward side of the fan 11 so It is cooled by spraying to prevent the oil temperature from rising, and it has the feature that dust does not collect around the tank. In this embodiment, the fan 11 rotates and winds and cools only during the threshing operation, but the rotation of the fan 11 also stops during the operation interruption when the threshing device 2 is stopped, and there is no useless power loss. There are also features.

つぎに、オイルタンク８とオイルフィルター３７は、図９、及び図１０に示すように、脱穀装置２の側部（オイルタンク８の高さに相当する位置）と上側位置とにオイルタンク８側に風を案内する風案内板４１、４２（第１風案内板４１、第２風案内板４２）を設けて構成している。 Next, as shown in FIGS. 9 and 10, the oil tank 8 and the oil filter 37 are arranged on the side of the threshing device 2 (position corresponding to the height of the oil tank 8) and the upper position. The wind guide plates 41 and 42 for guiding the wind (first wind guide plate 41 and second wind guide plate 42) are provided.

そして、該風案内板４１は、走行に伴って流れてくる風をオイルタンク８側に案内して吹き付けるように構成し、他方、上側の風案内板４２は、走行に伴って脱穀装置２の上面にそって後方に流れてくる風を、オイルタンク８とオイルフィルター３７とに向けて案内する形状に構成している。 And this wind guide plate 41 is comprised so that the wind which flows with driving | running | working may be guided and sprayed to the oil tank 8 side, on the other hand, the upper wind guide plate 42 of the threshing apparatus 2 with driving | running | working. The wind flowing backward along the upper surface is configured to guide the oil tank 8 and the oil filter 37.

以上のように構成すると、オイルタンク８とオイルフィルター３７とそれに接続ホース４５は、コンバインが前進するのにともなって後方へ流れるように発生する風が、風案内板４１，４２によって案内されて吹き付けられ、冷却作用と防塵作用が行われて油温の上昇が止められると共に、埃が後方に吹き飛ばされて溜まることのない優れた特徴がある。 When configured as described above, the oil tank 8, the oil filter 37, and the connection hose 45 are guided by the wind guide plates 41 and 42 and blown so as to flow backward as the combine moves forward. In addition, the cooling function and the dust-proofing function are performed to prevent the oil temperature from rising, and the dust is not blown away and collected.

つぎに、オイルタンク８、及びオイルフィルター３７は、図１１、及び図１２に示すように、一方の端を脱穀装置２の茎稈供給口１６の上方位置にし、他方の端を、脱穀装置２の後部より更に後方位置まで延長させた脱穀装置２の扱胴カバー４３で上方と側方とを覆った構成としている。 Next, as shown in FIGS. 11 and 12, the oil tank 8 and the oil filter 37 have one end positioned above the stalk supply port 16 of the threshing device 2 and the other end set to the threshing device 2. It is set as the structure which covered the upper part and the side with the handling cylinder cover 43 of the threshing apparatus 2 extended to the back position further from the rear part.

従来のオイルタンク８は、扱胴カバー４３とは別のタンクカバーによって覆った構成としていたが、実施例の場合、上述のとおり、扱胴カバー４３を後方まで延長して覆った構成であって、扱胴カバー４３をオープンすれば、オイルタンクも同時に開放されてオイルの補充等のメンテナンスが扱室のメンテナンスと共に出来る特徴がある。しかも、一体の扱胴カバー４３は、外観のデザインも優美となり、コスト的にも安価に製作できる優れた特徴がある。 The conventional oil tank 8 is configured to be covered with a tank cover different from the handling cylinder cover 43, but in the case of the embodiment, as described above, the handling cylinder cover 43 is extended to the rear and covered. If the handling cylinder cover 43 is opened, the oil tank is also opened at the same time, and maintenance such as oil replenishment can be performed together with maintenance of the handling chamber. In addition, the integrated handling cylinder cover 43 has an excellent appearance design and can be manufactured at a low cost.

つぎに、オイルタンク８と油圧モータ６とを連通して、両者間にオイルを循環する接続ホース４５の配策について説明する。
まず、接続ホース４５は、図１３、及び図１４に示すように、脱穀装置２の後部に搭載したオイルタンク８と刈取前処理装置５に装置している油圧モータ６との間に連通して設け、途中に油圧ポンプ３５、オイルフィルター３７、コントロールバルブ４６等を介装して一連の循環回路に構成している。そして、上記接続ホース４５は、図面に示すように、コンバイン機体（脱穀装置２）の中央部分のエンジンや排気管が配置されていて熱が集まる部位を避けて、車台の左外側を通して設け、外気（風）がホース表面に直接当たる構成としている。 Next, the arrangement of the connection hose 45 that allows the oil tank 8 and the hydraulic motor 6 to communicate with each other and circulates oil between them will be described .
First, as shown in FIGS. 13 and 14, the connection hose 45 communicates between the oil tank 8 mounted on the rear part of the threshing device 2 and the hydraulic motor 6 installed in the pre-cutting processing device 5. In the middle, a hydraulic pump 35, an oil filter 37, a control valve 46, and the like are interposed to form a series of circulation circuits. And as shown in the drawing, the connecting hose 45 is provided through the left outer side of the chassis, avoiding the part where the engine and exhaust pipe in the central part of the combine machine (threshing device 2) are arranged and collecting heat. (Wind) directly hits the hose surface.

このように構成すると、実施例は、車体の外側から種々の作業ができるから、製造工程の組立作業や事後のメンテナンスが楽にできる優れた特徴があり、更に、作業中には外気を受けて油温の上昇を防止できる利点もある。 With this configuration, the embodiment can perform various operations from the outside of the vehicle body. Therefore, the embodiment has an excellent feature that facilitates assembly operations and subsequent maintenance in the manufacturing process. There is also an advantage that an increase in temperature can be prevented.

そして、この場合、コントロールバルブ４６は、図１３、及び図１４に示すように、搬送コンベヤ装置１８の前部枠４７の左端に取り付けて構成しているから、その位置には外側に障害物（装置）がなく、作業者が近づき易く、メンテナンスが容易にできると共に、前記接続ホース４５との取り付け作業も楽になる特徴がある。 In this case, as shown in FIGS. 13 and 14, the control valve 46 is attached to the left end of the front frame 47 of the transport conveyor device 18. There is a feature that the operator can easily approach, maintenance can be facilitated, and attachment work with the connection hose 45 is easy.

そして、コントロールバルブ４６は、図面は省略したが、上記搬送コンベヤ装置１８の前部枠４７より前方の掻込みオーガー２４の機枠側に取り付けると、刈取前処理装置５を、車台１から分離するとき（搬送コンベヤ装置１８の前部枠４７から前を分離する）、接続しているホースの取外し作業が楽に出来る特徴がある。特に、実施例の場合、コントロールバルブ４６は、前側（油圧モータ６側）より後側（オイルタンク８側）の方が接続ホース４５の接続本数が少なく、着脱作業が楽にできる。 Although the control valve 46 is not shown in the drawing, when the control valve 46 is attached to the machine frame side of the scraping auger 24 in front of the front frame 47 of the transport conveyor device 18, the cutting pretreatment device 5 is separated from the chassis 1. Sometimes (the front is separated from the front frame 47 of the conveyor device 18), the connecting hose can be easily removed. In particular, in the case of the embodiment, the control valve 46 has fewer connecting hoses 45 on the rear side (oil tank 8 side) than on the front side (hydraulic motor 6 side), and can be easily attached and detached.

そして、接続ホース４５は、図１５、及び図１６に示す実施例の場合、脱穀装置２の側部を前後方向に配置した直線部分を金属製のパイプ４８を使用して構成している。このように、接続ホース４５は、直線部に金属製のパイプ４８を使用すると、樹脂やゴム製のホースに比較して、外傷を受け難く長持ちできる利点があると共に、金属の性質上熱伝導が速く内部を流動するオイルの冷却も効果的になる特徴がある。そして、金属製のパイプ４８は、組み立ても楽でコスト的にも安くなる等の特徴がある。 And in the case of the Example shown in FIG.15 and FIG.16, the connection hose 45 comprises the straight part which has arrange | positioned the side part of the threshing apparatus 2 in the front-back direction using the metal pipe 48. FIG. As described above, when the metal pipe 48 is used for the straight portion, the connection hose 45 has an advantage that it is less likely to be damaged and lasts longer than a resin or rubber hose, and the heat conduction is due to the nature of the metal. Cooling of oil that flows quickly inside is also effective. The metal pipe 48 has features such as easy assembly and low cost.

つぎに、接続ホース４５は、図１７に示すように、脱穀装置２の左側を通して設けるときに、圧風唐箕５０の吸気口５０ａと第二唐箕５１の吸気口５１ａとの外側を通して配策した構成としている。このように構成すると、接続ホース４５は、２つの唐箕５０，５１の吸気口５０ａ、５１ａにおいて、外部から吸引されている冷風を直に受けて冷やされ、油温の上昇を未然に防止できる特徴がある。 Next, as shown in FIG. 17, when the connection hose 45 is provided through the left side of the threshing device 2, the connection hose 45 is routed through the outside of the intake port 50 a of the compressed wind tang 50 and the intake port 51 a of the second tang 51. It is said. If comprised in this way, the connection hose 45 will receive the cold wind attracted | sucked from the outside directly in the inlet ports 50a and 51a of the two tangs 50 and 51, and it can be cooled, and can prevent the raise of oil temperature beforehand. There is.

つぎに、油圧回路７の圧抜き機構を説明する。
まず、実施例の圧抜き回路５５は、図１８に示すように、直列に接続した２つの油圧モータ６、６（図７参照）に連通している循環回路５７（図７に示す直列回路７ａ、７ｂに相当する）に接続して設け、この圧抜き回路５５に圧抜きバルブ５６を設けて構成している。そして、上記圧抜きバルブ５６は、油圧ポンプ３５を始動して作動油を駆動回路５８から油圧モータ６へ、更に循環回路５７を経てつぎの油圧モータ６側へ圧送を開始すると、駆動回路５８のパイロット圧によって閉じる構成となっている。 Next, the pressure relief mechanism of the hydraulic circuit 7 will be described.
First, as shown in FIG. 18, the pressure release circuit 55 of the embodiment has a circulation circuit 57 (series circuit 7a shown in FIG. 7) that communicates with two hydraulic motors 6 and 6 (see FIG. 7) connected in series. , 7b), and a pressure relief valve 56 is provided in the pressure relief circuit 55. The pressure relief valve 56 starts the hydraulic pump 35 and starts pumping hydraulic oil from the drive circuit 58 to the hydraulic motor 6 and further to the next hydraulic motor 6 side through the circulation circuit 57. The structure is closed by the pilot pressure.

したがって、２つの油圧モータ６、６は、圧抜き回路５５が閉じられた状態で作動油が駆動回路５８から最初の油圧モータ６を駆動し、続いて、循環回路５７から二番目の油圧モータ６へ循環されて駆動され、２条の回転刈刃４を伝動する。このように、油圧モータ６、６は、駆動されながら回転刈刃４を伝動して刈取作業を行うことになる。そして、圧抜きバルブ５６は、刈取作業を中断するとき、或いは緊急停止するときに、油圧ポンプ３５を停止して駆動回路５８への作動油の圧送がなくなると、ばねの張力によって自動的に開き圧抜き回路５５がオイルタンク８に連通状態となって、２つの油圧モータ６、６の間の循環回路５７の作動油がタンク８側に循環して圧抜き作用が完了する。 Accordingly, in the two hydraulic motors 6 and 6, the hydraulic oil drives the first hydraulic motor 6 from the drive circuit 58 with the pressure release circuit 55 closed, and then the second hydraulic motor 6 from the circulation circuit 57. It is circulated and driven to transmit the two rotary cutting blades 4. Thus, the hydraulic motors 6 and 6 perform the cutting operation by transmitting the rotary cutting blade 4 while being driven. The pressure relief valve 56 is automatically opened by the tension of the spring when the hydraulic pump 35 is stopped and the hydraulic oil is not pumped to the drive circuit 58 when the cutting operation is interrupted or the emergency stop is performed. The depressurization circuit 55 is in communication with the oil tank 8, and the hydraulic oil in the circulation circuit 57 between the two hydraulic motors 6 and 6 circulates to the tank 8 side to complete the depressurization operation.

従来の油圧回路７は、油圧モータ６、６に作動油を供給する循環回路５７に圧抜き機構が無いために、刈取作業中に回転刈刃４が外部抵抗を受けて停止したとき、油圧ポンプ３５を停止しても油圧モータ６、６の間にある循環回路５７中の作動油（油圧）が抜けず、圧力がこもる状態にあり、回転刈刃４の逆転が不能の状態で外部抵抗から回避できない危険性の高い構成であった。 Since the conventional hydraulic circuit 7 has no pressure relief mechanism in the circulation circuit 57 that supplies hydraulic oil to the hydraulic motors 6 and 6, when the rotary cutting blade 4 stops due to external resistance during the cutting operation, the hydraulic pump Even if 35 is stopped, the hydraulic oil (hydraulic pressure) in the circulation circuit 57 between the hydraulic motors 6 and 6 is not released, the pressure is accumulated, and the rotary cutting blade 4 cannot be reversely rotated from the external resistance. It was a highly risky configuration that could not be avoided.

これに対して、上述の実施例は、２つの油圧モータ６、６間の循環回路５７に圧抜きバルブ５６を有する圧抜き回路５５を接続したから、駆動中に油圧ポンプ３５を停止すると、自動的に圧抜きバルブ５６が作動して開き循環回路５７の作動油が圧抜回路５５から圧抜きバルブ５６を経由してオイルタンク８に循環して回路中の油圧がなくなるものである。したがって、回転刈刃４は、伝動チェン２５を介して油圧モータ６に連結しているが、フリーの状態で回転が自由になり、抵抗のない状態に障害物を取り除くことができる特徴がある。 On the other hand, in the above-described embodiment, since the pressure release circuit 55 having the pressure release valve 56 is connected to the circulation circuit 57 between the two hydraulic motors 6 and 6, when the hydraulic pump 35 is stopped during driving, In other words, the pressure relief valve 56 is actuated, and the hydraulic oil in the opening circulation circuit 57 is circulated from the pressure relief circuit 55 to the oil tank 8 via the pressure relief valve 56 and the hydraulic pressure in the circuit is eliminated. Therefore, the rotary cutting blade 4 is connected to the hydraulic motor 6 through the transmission chain 25, but has a feature that the rotation can be freely performed in a free state and an obstacle can be removed without a resistance.

つぎに、図１９に示す実施例は、図１８の油圧回路７において、油圧モータ６への駆動回路５８と作動油をタンク８側に循環するアンロード回路５９との間に切換バルブ６０を設けて駆動回路５８とアンロード回路５９との間に作動油の切換ができる構成としている。 Next, in the embodiment shown in FIG. 19, in the hydraulic circuit 7 of FIG. 18, a switching valve 60 is provided between the drive circuit 58 to the hydraulic motor 6 and the unload circuit 59 that circulates hydraulic oil to the tank 8 side. Thus, the hydraulic oil can be switched between the drive circuit 58 and the unload circuit 59.

この油圧回路７は、油圧ポンプ３５の駆動、又は停止にかかわらず、上記切換バルブ６０をアンロード回路５９側に切り替えると、駆動回路５８と循環回路５７との作動油がほとんど同時にタンク８側に連通状態になって循環でき圧抜きができる利点がある。 In this hydraulic circuit 7, when the switching valve 60 is switched to the unload circuit 59 side regardless of whether the hydraulic pump 35 is driven or stopped, the hydraulic oil in the drive circuit 58 and the circulation circuit 57 is almost simultaneously transferred to the tank 8 side. There is an advantage that it can be circulated in a communication state and can be depressurized.

つぎに、図２０に示す実施例は、上記図１９の切換バルブ６０に代えて、パイロット圧により切換をするアンロードバルブ６１を使用した別の構成例であって、コストダウンを考慮したものである。 Next, the embodiment shown in FIG. 20 is another configuration example in which an unload valve 61 that switches by pilot pressure is used instead of the switching valve 60 of FIG. is there.

つぎに、図２１に示す実施例は、上記図２０の実施例において、油圧モータ６、６を連通する循環回路５７と、油圧ポンプ３５から油圧モータ６に連通させた駆動回路５８とにそれぞれ逆流防止弁６２を有する圧抜き回路５５を設けて圧抜きバルブ５６に連通した構成としている。６３は駆動回路５８に設けた逆流防止弁であって、アンロード圧以上で開口する弁構成としている。 Next, in the embodiment shown in FIG. 21, in the embodiment of FIG. 20, the backflow flows into the circulation circuit 57 that communicates the hydraulic motors 6 and 6, and the drive circuit 58 that communicates from the hydraulic pump 35 to the hydraulic motor 6, respectively. A pressure relief circuit 55 having a prevention valve 62 is provided to communicate with the pressure relief valve 56. Reference numeral 63 denotes a backflow prevention valve provided in the drive circuit 58, which has a valve configuration that opens above the unload pressure.

したがって、図２１に示す実施例は、上記構成によって、アンロード圧により油圧モータ６が誤作動することがないように安全性を高めた特徴がある。
以上、この発明の各実施例を具体的に説明したが、まず、この明細書で請求項１に記載した実施例の場合、従来コンバインが、前バランスの傾向が強く、そのために種々の弊害が出ていたが、これを改善するために、オイルタンク８を車台１の後部位置に搭載して修正したものである。この実施例に係るコンバインは、作業中の前後の揺れが極端に少なくなり、刈高さを一定に保って揺れに伴うヘッドロスの解消を図ることが可能になったものである。 Accordingly, the embodiment shown in FIG. 21 has a feature that the safety is enhanced by the above configuration so that the hydraulic motor 6 does not malfunction due to the unload pressure.
As described above, each embodiment of the present invention has been specifically described. First, in the case of the embodiment described in claim 1 in this specification, the conventional combine has a strong tendency to pre-balance, and therefore various adverse effects are caused. In order to improve this, the oil tank 8 is mounted on the rear position of the chassis 1 and corrected. In the combine according to this embodiment, the back and forth shaking during the work is extremely reduced, and it becomes possible to eliminate the head loss caused by the shaking while keeping the cutting height constant.

そして、この発明の実施例は、オイルタンク８を後部の高い位置に装置したことによって、塵埃等の降り掛かることも少なくなり、埃の溜まりも少なくなって清掃等の手間が大幅に省けて楽になった特徴もある。 In the embodiment of the present invention, the oil tank 8 is installed at a high position in the rear portion, so that dust or the like is less likely to fall down, dust accumulation is reduced, and the trouble of cleaning or the like is greatly reduced, so that it can be easily performed. There are also features.

つぎに、請求項２に記載した発明の実施例の場合、排塵物を車台１の後部下方の圃場面に排出するために後部傾斜を付けて構成した排塵カバー９の上側にオイルタンク８を搭載したから、オイル補給時等にタンク８から漏れたオイルの溜りがなくなり、従来からの課題を解消することができた。 Next, in the case of the embodiment of the invention described in claim 2, the oil tank 8 is disposed on the upper side of the dust cover 9 provided with a rear slope in order to discharge the dust to the field scene below the rear of the chassis 1. Since the oil tank is installed, there is no accumulation of oil leaking from the tank 8 when oil is replenished, and the conventional problems can be solved.

すなわち、オイルタンク８は、オイルの補充等のメンテナンスにあたり、オイルが外に流れ出すことがあるが、そのような場合でも、上述したように傾斜した排塵カバー９の上面をつたわって地面に排油できるから、車台上にオイル溜りができる等の弊害を未然に解消できた。 In other words, the oil tank 8 may flow out of the oil for maintenance such as oil replenishment. Even in such a case, the oil tank 8 is drained to the ground by passing the top surface of the inclined dust cover 9 as described above. As a result, problems such as oil pooling on the chassis could be eliminated.

つぎに、請求項３に記載した発明の実施例の場合、油圧装置７の作動中に油温の上昇が常に課題となり、これを解消するために従来から大容量のタンクを使用していたが、実施例では、脱穀装置２の入力プーリ１０にファン１１を設け、このファン１１の風下側にオイルタンク８を配置することによって、作業中に風を吹き付けて冷却し、油温上昇を防止すると共に、タンク８の周囲に塵埃が溜まらないようにしている。 Next, in the case of the embodiment of the invention described in claim 3, a rise in the oil temperature is always a problem during the operation of the hydraulic device 7, and a large-capacity tank has been conventionally used to solve this problem. In the embodiment, the fan 11 is provided in the input pulley 10 of the threshing device 2, and the oil tank 8 is disposed on the leeward side of the fan 11, so that the wind is blown and cooled during the operation to prevent the oil temperature from rising. At the same time, dust is prevented from collecting around the tank 8.

更に、この実施例は、脱穀作業中のみファン１１が回転して起風し、冷却する構成であるから、脱穀装置２を停止した作業中断中の走行時等に無駄な動力の損失をしない構成としている。 Furthermore, since the fan 11 rotates and winds only during the threshing operation and cools in this embodiment, the threshing device 2 is stopped and the operation is interrupted so that the power is not wasted. It is said.

コンバインの平面図Top view of the combine コンバインの側面図Combine side view 刈取前処理装置の一部を断面した側面図Side view of a part of the pre-cutting device 刈取前処理装置の一部を断面した側面図Side view of a part of the pre-cutting device 刈取前処理装置の作用側面図Side view of the cutting pretreatment device 刈取前処理装置の作用側面図Side view of the cutting pretreatment device 刈取前処理装置に油圧回路を接続した説明用の平面図Plan view for explanation with a hydraulic circuit connected to the pre-cutting device 要部の平面図Plan view of main parts コンバインの一部を示す作用平面図Action plan view showing part of the combine コンバインの一部を示す作用側面図Side view of the action showing part of the combine コンバインの平面図Top view of the combine コンバインの側面図Combine side view コンバインの平面図Top view of the combine コンバインの側面図Combine side view コンバインの平面図Top view of the combine コンバインの側面図Combine side view コンバインの側面図Combine side view 油圧回路図Hydraulic circuit diagram 油圧回路図Hydraulic circuit diagram 油圧回路図Hydraulic circuit diagram 油圧回路図Hydraulic circuit diagram

１車台
２脱穀装置
３茎稈搬送装置
４回転刈刃
５刈取前処理装置
６油圧モータ
７油圧装置
７ａ直列回路（左側直列回路）
７ｂ直列回路（右側直列回路）
８オイルタンク
９排塵カバー
１０入力プーリ
１１ファン
１６茎稈投入口
１７排塵口
２０分草杆
２１ラグベルト
２４掻込みオーガー
２５伝動チェン
３５油圧ポンプ
３６分流弁
３７オイルフィルター
４０タンク支持台
４１風案内板（第１風案内板）
４２風案内板（第２風案内板）
５５圧抜き回路
５６圧抜きバルブ
５７循環回路
５８駆動回路 DESCRIPTION OF SYMBOLS 1 Chassis 2 Threshing device 3 Stem ridge conveying device 4 Rotary cutting blade 5 Cutting pretreatment device 6 Hydraulic motor 7 Hydraulic device
7a series circuit (left series circuit)
7b series circuit (right series circuit)
8 Oil tank 9 Dust cover 10 Input pulley 11 Fan
16 stem input
17 dust outlet
20 minutes Kusanagi
21 lug belt
24 biting auger
25 transmission chain
35 hydraulic pump
36 minute flow valve
37 oil filter
40 tank support
41 wind guide plate (first wind guide plate)
42 wind guide plate (second wind guide plate)
55 pressure relief circuit
56 pressure relief valve
57 circulation circuit
58 drive circuit

Claims

A threshing device (2) equipped with a whole-chassis-type treatment room and a sorting room is placed on the chassis (1) with the stem-and-mouth inlet (16) positioned at the front and the dust outlet (17) positioned at the rear. in Haichiriguchi (17) clean room port by connecting the dust-exhaust cover (9) from the upper side (17) clean room was dust-exhaust cover (9) of the mounting, the threshing apparatus (2) to a structure for guiding the ground side, dehydration grain apparatus (2) of the upper and lower rotating the transfer terminal end portion of the brush preparative pretreatment device prior side of the stem稈投inlet (16) (5) conveyor device side (18) A pair of left and right lug belts provided at the rear of the pair of weed folds (20, 20) and the pair of left and right weed folds (20, 20). (1), a pedicle conveying device (3) composed of (21, 21) and a rotary cutting blade (4) mounted on the vertical axis below the pedicle conveying device (3) as an integral framework, This Was a laterally Article 4 minute sequence with the structures, holding the Raguberuto (21, 21) of the pair of left and right stem culm feeder (3) so that there is no fall off of the stem culm provided in two upper and lower stages, rotation The stems that have been cut off by the cutting blade (4) are held by the pair of left and right lug belts (21, 21) and conveyed to the upper auger (24) above the rear part. Of the four hydraulic motors (6) connected to the two rotary cutting blades (4) via the transmission chain (25) , the left two hydraulic motors are connected in series, and the left series circuit (7a The right two hydraulic motors are connected in series to form the right series circuit (7b), and the left series circuit is connected to the branch between the left series circuit (7a) and the right series circuit (7b). (7a) and the right series circuit (7b) are supplied while distributing the oil equally. The four hydraulic motors (6) are driven by an equal amount of hydraulic oil that is pumped and circulated to the left series circuit (7a) and the right series circuit (7b). , the hydraulic circuit for driving the hydraulic motor (6) connected to the oil tank (8) oil filter (37), provided on the portion on the side of the rear of the threshing apparatus the oil tank (8) (2) The oil filter (37) is provided near the oil tank (8) and is placed on the tank support (40). The oil tank (8) and the oil filter (37) are provided with a dust cover ( 9) on the leeward side of the wind by the fan (11) provided integrally with the input pulley (10) of the threshing device (2), and the side portion and the upper side position of the threshing device (2) To guide the wind to the oil tank (8) side A first wind guide plate (41) and a second wind guide plate (42) are provided, and the first wind guide plate (41) provided on the side of the threshing device (2) flows as the vehicle body travels. The second wind guide plate (42) provided at the upper position of the threshing device (2) is guided along the upper surface of the threshing device (2) as the vehicle is traveling. Two hydraulic motors connected to each of the left series circuit (7a) and the right series circuit (7b) in series are configured to guide the wind flowing backward toward the oil tank (8) and the oil filter (37). A pressure relief circuit (55) is connected to the circulation circuit (57) provided between them, a pressure relief valve (56) is provided in the pressure relief circuit (55), and a hydraulic pump (35) is started to drive hydraulic oil. Pumped from the circuit (58) to the first hydraulic motor and then passed through the circulation circuit (57) to the next oil When the pressure feeding to the motor is started, the pressure relief valve (56) is closed by the pilot pressure of the drive circuit (58), the hydraulic pump (35) is stopped and the hydraulic oil is not pumped to the drive circuit (58). The pressure relief valve (56) is automatically opened by the tension of the spring, the pressure relief circuit (55) is in communication with the oil tank (8), and the hydraulic fluid in the circulation circuit (57) between the two hydraulic motors is stored in the tank. (8) Konbai down, characterized in that it has a structure in which circulates the side.