TW201127274A - Riding type agricultural working machine - Google Patents

Riding type agricultural working machine Download PDF

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Publication number
TW201127274A
TW201127274A TW99138619A TW99138619A TW201127274A TW 201127274 A TW201127274 A TW 201127274A TW 99138619 A TW99138619 A TW 99138619A TW 99138619 A TW99138619 A TW 99138619A TW 201127274 A TW201127274 A TW 201127274A
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TW
Taiwan
Prior art keywords
frame
engine
support
gearbox
chassis
Prior art date
Application number
TW99138619A
Other languages
Chinese (zh)
Other versions
TWI505770B (en
Inventor
Tomoyuki Kuroda
Original Assignee
Yanmar Co Ltd
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Filing date
Publication date
Priority claimed from JP2009256857A external-priority patent/JP5508624B2/en
Priority claimed from JP2009271201A external-priority patent/JP5411674B2/en
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Publication of TW201127274A publication Critical patent/TW201127274A/en
Application granted granted Critical
Publication of TWI505770B publication Critical patent/TWI505770B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
    • B62D21/186—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 for building site vehicles or multi-purpose tractors
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/003—Transplanting machines for aquatic plants; for planting underwater, e.g. rice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K15/067—Mounting of tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/04—Arrangement or mounting of internal-combustion or jet-propulsion units with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1208—Resilient supports
    • B60K5/1216—Resilient supports characterised by the location of the supports relative to the motor or to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

A rice planting machine has a travel vehicle body. The travel vehicle body has a chassis, and the chassis has side frames 9 and 10, a mid frame 11, a front frame 12, and a rear frame 14. A transmission case 27 and a rear axle case 34 serve as a strength member of the travel vehicle body, and the transmission case 27 and the rear axle case 34 are coupled by a lower connection body 36. An engine 26 is supported by a U-shaped engine support 55 having an upward opening, and the engine support 55 is firmly attached to the front side frame 9. Since the engine 26 is arranged in a state in which it settles down below the front side frame 9, a center of gravity of the travel vehicle body 1 becomes low and a stability is high.

Description

201127274 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種如乘用型插秧機般藉由弓丨擎來驅動之 乘用型農作機（agricultural working machine)。 【先前技術】 作為乘用型農作機之一例’有乘用型插秧機。該乘用型插 秧機中，作為主要要素，包含藉由前輪及後輪支持之行駛車 體、及配置於該行駛車體之後方之插秧裝置，且插秧裝置係 可調節高度地連結於行駛車體。於行駛車體配置有座席及操 縱方向盤，並且搭載有引擎，且藉由引擎之動力進行行駛及 插秧作業。再者，行駛車體亦可稱為行駛部。 4亍駛車體通常包含由鋼管或槽鋼材料(channei materiai)等 框架材料(鋼材）構成之底盤（骨架及機架），且一般包含向前 後方向長向地延伸之左右側架作為骨架之主要構件，並且藉 由橫長之構件來連結左右之側架。於插秧裝置及行駛車體可 相對轉動地連結有連桿裝置，且藉由油壓缸而連結行駛車體 與連桿裝置。 引擎存在隔著操縱踏板(Ώ〇〇Γ)配置於近前方之情況及配 置於後方之情況’將引擎配置於駕駛踏板之近前方之情況之 具體構成係記載於例如專利文獻i、2。即，於專利文獻】 中’係藉由構成底盤之左右側架來支持引擎，且側架中支持 引·#之部分係呈水平狀之姿勢。另—方面，於專利文獻2 099138619 4 201127274 中，側架之前部係形成為越朝向前端則越低之傾斜部，且藉 由連結於該傾斜部之構件來支持？丨擎。 於專利文獻3中揭示有類似於專利文獻1之構造。即，於 該專利文獻3中，係將左右之側架44以其後半部越向後走 則高度越高之方式設為於側面觀察下呈彎曲之形態（即，將 後半部形成為傾斜部），且藉由左右橫長之前架41連結左右 側架44之前部’另一方面，左右侧架44之後端分別固著於 自後車軸箱38立起之後架43之上部側面，此外，於左右之 後支柱43之上端彎曲形成有左右橫長之後架。 又’於專利文獻3中，變速箱6係延伸至後車軸箱38為 止’且藉由配置於變速箱6後半部之内置式鏈條而向後輪傳 遞動力。此外’左右側架44之前後中途部係藉由貫通於其 之中間架175而連結’且於中間架175及變速箱6固定有托 架176，並且於該托架176連結有升降用氣缸。 [先前技術文獻] [專利文獻] (專利文獻1)日本專利第4139669號公報 (專利文獻2)曰本專利特開2〇〇〇_2〇1510號公報 (專利文獻3)曰本專利第38〇4926號公報 【發明内容】 (發明所欲解決之問題） 就確保行駛穩定性之方面而言，行駛車體較佳為儘可能地 099138619 201127274 降而且，由於引擎具有相當之重量，故降低引擎 位置對降低行敬車體之重心之方面而1相低引擎之 專利文獻2由於可降低引擎 ” 由此， 體之低重心化嗜而欠可有利於行馱車 然而，右使側架之前部傾斜， 變更藉由側架之前部所支持之其他構件之支^ y、幅 導致整體設計成本及製造成本之增加。、&’因此恐 即，若採用乘用型農作機為例，則如例如專利文獻 2所揭不’人所乘坐之車蓋大多係以擴展至引擎之左右兩側 之狀態而配置’且車蓋中伸出於料之左右兩側之部分雖直 接或經由減㈣娜所支持，岭如專利讀2般使側架 之前部傾斜時’則亦必顏更轄之支持構造，致使設計^ 製造之成本增加。 又，如專利文獻1之圖1、2所記載，乘用型農作機中， 於側架之前部配置有左右一對預備苗台，該等預備苗台大多 經由托架固定於側架，但若如專利文獻2般使側架之前部傾 斜，則亦必須變更預備苗台之支持構造，致使與預備苗台之 支持部相關之設計及製造之成本增加。 本發明之一個目的在於改善此種現狀。另一方面，於專利 文獻3中，變速箱及後車軸箱均係具有用於支持其他構件之 構造材料（強度構件)作用’因此可謂能有利於行駛機體之構 造簡化及成本降低。本發明之目的亦在於，於與該專利文獻 3同樣地將變速箱或後車轴箱兼用作行駛機體之構造材料 099138619 6 201127274 之情形時，使行駛機體之剛性更進—步提高。 此外，本案中係揭示有多個新構成，但提供該等新構成亦 可視為本案之-部分目的。即，本_揭示之新構成應理解 為無論是否有記載人請求項均可作為獨立之發明。 (解決問題之手段） 本發明之乘用型農作機之基本構操 縱之行駛車體及搭載於該 人= 含配置於触席之下方μ車R料’上辟駛車體包 架材料構成，並自上心^盤及行駛變速箱，上述底盤由框 内部。 丨¥將動力傳遞至上述行駛變速箱之 本案包含多個發明。发 ^ 中，上述底盤及變速、，第1發_於上述基本構成 行配置，且於上述變速箱位於底盤之下方之狀態進 位設置有位於較上^目之前方或後方、或者前後兩方之部 件支持部。再者，作為文速箱之上表面而更偏向下方處之構 3所示之引擎支持用‘件支持部之具體例，例如可列舉圖 或圖11(A)所示之燃2樓架55(前側構件支持部之—例）、 持部之一例）。 相支持用之支承材料38(後側構件夫 第2發明如第！發明 前方之部位，將载置上、、/、，於上述底盤中之上述變速寿彳 之下端位於較上逃變^擎之引擎支撐部以該引擎支⑤ 向下突出設置而作為饭相之上表面而更偏向下方處之狀f 09913B619 於上述變速箱之前方之前側構件 201127274201127274 VI. Description of the Invention: [Technical Field] The present invention relates to a portable working machine driven by a bowing engine like a passenger type rice transplanter. [Prior Art] As an example of a passenger-type agricultural machine, there is a passenger-type rice transplanter. The passenger-type rice transplanter includes, as a main component, a traveling vehicle body supported by the front wheel and the rear wheel, and a rice transplanting device disposed behind the traveling vehicle body, and the rice transplanting device is height-adjustably coupled to the traveling vehicle. body. The vehicle body is equipped with a seat and a steering wheel, and is equipped with an engine, and is driven by the power of the engine and inserted. Furthermore, the traveling vehicle body may also be referred to as a traveling portion. 4. The vehicle body usually includes a chassis (frame and frame) made of a frame material (steel material) such as a steel pipe or a channel material (channei materiai), and generally includes a left and right side frame extending longitudinally in the front-rear direction as a skeleton. The main components are connected to the left and right side frames by means of horizontal members. A link device is coupled to the rice transplanting device and the traveling vehicle body so as to be relatively rotatable, and the traveling vehicle body and the link device are coupled by a hydraulic cylinder. The case where the engine is disposed in the vicinity of the steering pedal (Ώ〇〇Γ) and the rear side is disposed. The specific configuration in which the engine is disposed in the immediate vicinity of the driving pedal is described in, for example, Patent Documents i and 2. That is, in the patent document, the engine is supported by the left and right side frames constituting the chassis, and the portion supporting the lead in the side frame is in a horizontal posture. On the other hand, in the patent document 2,099,138, 619, 4, 2011, 27,274, the front side of the side frame is formed as the inclined portion which is lower toward the front end, and is supported by the member connected to the inclined portion.丨擎. A configuration similar to that of Patent Document 1 is disclosed in Patent Document 3. In the case of Patent Document 3, the left and right side frames 44 are curved so as to be viewed from the side when the rear half is moved rearward (that is, the rear half is formed as an inclined portion). The left and right side frames 44 are connected to the front portion of the left and right side frames 44 by the left and right horizontally long front frames. On the other hand, the rear ends of the left and right side frames 44 are respectively fixed to the upper side of the frame 43 after the rear axle box 38 is erected, and Then, the upper end of the strut 43 is bent to form a left and right horizontally long rear frame. Further, in Patent Document 3, the transmission case 6 is extended to the rear axle box 38, and the built-in chain disposed in the rear half of the transmission case 6 transmits power to the rear wheel. Further, the front and rear side frames 44 are connected by the intermediate frame 175 penetrating therethrough, and the bracket 176 is fixed to the intermediate frame 175 and the transmission case 6, and the lifting cylinder is coupled to the bracket 176. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent No. 4139669 (Patent Document 2) Japanese Patent Laid-Open Publication No. Hei 2 〇〇〇 〇 10 1510 (Patent Document 3) 曰 Patent No. 38 〇4926 SUMMARY OF INVENTION [Problem to be Solved by the Invention] In terms of ensuring driving stability, the traveling body is preferably as low as 099138619 201127274, and since the engine has a considerable weight, the engine is lowered. The position is to reduce the center of gravity of the car body. The patent document 2 of the 1-phase low engine can reduce the engine. Thus, the low center of gravity of the body can be beneficial to the car. However, the front side of the side frame is right. Tilting, changing the support of other components supported by the front part of the side frame, resulting in an increase in overall design cost and manufacturing cost. &' Therefore, if a passenger-type agricultural machine is used as an example, For example, Patent Document 2 discloses that the hoods that people ride are mostly arranged to extend to the left and right sides of the engine, and the parts of the hood that protrude from the left and right sides of the material are directly or via subtraction (four) Supported, When the ridge is tilted in the front part of the side frame, the support structure of the design is increased, and the cost of the design is increased. Further, as shown in Figures 1 and 2 of Patent Document 1, the multipurpose type farming In the machine, a pair of left and right preliminary seedlings are disposed in front of the side frame, and the preliminary seedlings are often fixed to the side frame via the bracket. However, if the front side of the side frame is tilted as in Patent Document 2, the preparation must be changed. The support structure of Miaotai has increased the cost of design and manufacture related to the support section of the reserve Miaotai. One object of the present invention is to improve such a situation. On the other hand, in Patent Document 3, the gearbox and the rear axle box Both of them have a function of a structural material (strength member) for supporting other members. Therefore, it can be said that the structure of the traveling body can be simplified and the cost can be reduced. The object of the present invention is also to make a gearbox or the like in the same manner as in Patent Document 3. When the rear axle box is also used as the structural material of the traveling body 099138619 6 201127274, the rigidity of the traveling body is further improved. In addition, in this case, a plurality of new components are disclosed. The provision of such new composition may also be considered as part of the purpose of the present invention. That is, the new constitution of the present disclosure should be understood as an independent invention regardless of whether or not the claimant has been requested. (Means for Solving the Problem) The basic structure of the type of farming machine is controlled by the driving body and is equipped with the material of the vehicle body frame including the lower part of the vehicle, which is disposed under the seat, and is designed from the top of the heart and the gearbox. The chassis is inside the frame. The present invention includes a plurality of inventions for transmitting power to the traveling transmission. The chassis and the shifting, the first hair is disposed in the basic configuration line, and is located in the gearbox. The state carry-up under the chassis is provided with a component support portion located before or behind the upper mesh, or both front and rear. Further, as a specific example of the engine support "piece support portion" shown as a structure 3 which is a lower portion of the upper surface of the document transmission box, for example, a fuel-fired 2 frame 55 shown in Fig. 11(A) can be cited. (Example of the front member support portion), an example of the holding portion). The supporting material 38 for supporting the back side (the second side of the second member of the invention) is placed on the front side of the invention, and is placed on the lower end of the shifting life in the chassis. The engine support portion is protruded downwardly from the engine branch 5 as a surface above the rice phase and is more biased downward. f 09913B619 before the gearbox, the front side member 201127274

持部，且上述引擎係以使复卞± ^ A 從〃、下表面下沉至上述底盤下方之狀 態而由上述引擎支撐部所支才夺 第3¾明如第2發明’其中，上述底盤係形成為將向前後 方向延伸之左右侧架藉由横長架加以連結之構造，且於上述 左右側架之前部設置有上4擎支樓部。 第4發明如第3發明，发丄 ^ #巾，上述引擎支撐部包含形成有 正面硯察下呈向上開口之υ字狀形態之i條或複數條支樓 架’且於該支樓架之底部缓由緩衝體而安裝有上述引擎。 第5毛明如第4兔明’其中，上述支撐架係前後並排地配 置有複數個’且該等複數個切料勒向該支餘下方突 出之1個或複數個補強體而予以連結。 第6發明如第1發明’其中，於上述變速箱連結有支持前 輪之别車軸裝置，另一方面，於上述變速箱之後方配置有可 方疋轉自如地支持後輪之後車軸箱，上述變速箱及後車軸箱係 藉由位於較上述變速箱之上表面而更偏向下方處之下部連 結體而連結，且於上述下部連結體設置有位於變速箱後方之 後侧構件支持部（例如圖11(A)所示之燃料箱支持用之支承 材料38)。 第7發明如第6發明，其中，上述底盤包含有：向前後方 向延伸之左右之側架、將上述左右側架於其前後中途部予以 連結之左右橫長中間架、及將上述左右側架於其後端部予以 連結之左右橫長後架，上述後架係透過後支柱而由後車輪箱 099138619 c 201127274 所支持，且將上述巾間架或左右側架與下部連結體藉由補強 體而加以連結。 第8發明如第7發明，其中，上述補強體係於正面觀察下 呈向上開口之ϋ字狀’且隨越向後走則越低而於側面觀察 下呈為前傾’並骑由設置於上述補強體底部之後側構件支 持部而支持燃料箱。 第9發明如第7發明，其中，上述補強體為鋼管製且形成 為框架構造’並且將該補強體形成為於正面觀察下呈大致u 型或大致V型之形態（亦可採用倒梯形或半圓狀之㈣）。 第10發明如第7發明，其中，上述側架可分為2中間 架之近前方之大致水平姿勢之前側㈣、及位於中間竿之後 方並且隨越向後走則越高而呈傾斜之後側側架，上^側側 架在較前側側架而更偏向左右内側處被固定於中門穴另一 方面，上述補強體在上述後側侧架之前端 上述中間架。 一被固定於 方:第：㈣，其中’作為配置於上述變速箱後 方之後方構件支持部，係將用於載置上述 部，以該引擎切部之下端位於較上述變迷箱 <之彳丨擎支樓 偏向下方處之狀態進行配置，且上述引擎係上表面而更 沉至上述底盤下方之狀態而由上述引擎切〃下表面下 (發明效果） σ所支持。 根據第1發明，於變速箱之前方或後 099138619 或者前後兩側設 9 201127274 置有構件支持部’藉此可以降低重心之狀態來配置構件 如引擎或顧箱）。因此，可降低行駛車體之重心而提高行 駛穩定性。再者’行駛車體亦可稱為行駛部。 引擎具有相當之重量，其高度位置會對行駛車體之重心產 生影響。因此’若如第2發明般藉由前側構件支持部來支持 引擎，則引擎會以下沉至底盤之下方之狀態而被配置，故可 確實地降储駛車體之重心。目此，非常制於提高行馱參 定性。至於藉由構件支持部支持何種構件，則可根據作業機 之種類或構造進行選擇。 專利文獻2係使側架之前部傾斜者，故僅可應用於將引擎 配置於底肋部之_，但於本案巾，如作為第U發明所 特疋般’亦可將引擎支撐部配置於變速箱之後方。換言之， 亦可採用第2發明之彳丨擎支撐部來作為後侧構件支持部。因 此於本lx月中，可謂引擎之配置位置之靈活性較高。 又加於專利文獻2中，為了降低引擎之支持高度，必須增 大=(底盤)之傾斜角度或者增長傾斜部之全長來因應，但Holding the portion, and the engine is supported by the engine support portion in a state in which the retracement ± ^ A is sunk from the cymbal and the lower surface to the lower side of the chassis. The second invention is the second chassis. The left and right side frames extending in the front-rear direction are connected by a horizontally long frame, and the upper and lower engine side portions are provided in front of the left and right side frames. According to a fourth aspect of the present invention, in the third aspect of the invention, the engine support portion includes i or a plurality of trusses which are formed in a U-shaped form which is open upward in a front view, and is in the truss The engine is installed at the bottom by the buffer. In the fifth embodiment, the support frame is provided with a plurality of front and rear side-by-side arrangement, and the plurality of cut pieces are connected to one or a plurality of reinforcing bodies protruding below the support. According to a sixth aspect of the invention, in the first aspect of the invention, the axle of the front wheel is coupled to the transmission, and the axle box is disposed behind the transmission, and the axle is supported by the rear wheel. The box and the rear axle box are connected by a lower connecting body located at a lower side than the upper surface of the gearbox, and the lower connecting body is provided with a rear side member supporting portion located behind the gearbox (for example, FIG. 11 ( A) Support material 38) for fuel tank support. According to a seventh aspect of the invention, the chassis includes: a left side frame extending in a front-rear direction, a left and right horizontally long intermediate frame connecting the left and right side frames in a front-rear direction portion thereof, and the left and right side frames a left and right horizontally long rear frame connected at a rear end portion thereof, the rear frame is supported by a rear wheel frame 099138619 c 201127274 through a rear pillar, and the towel rack or the left and right side frames and the lower joint body are reinforced by the reinforcing body Link it. According to a seventh aspect of the present invention, in the seventh aspect of the invention, the reinforcing system has a U-shape that is upwardly open when viewed from the front, and is lower as it goes backward, and is inclined forward when viewed from the side, and is set to be reinforced by the above-mentioned reinforcement. The fuel tank is supported by the body bottom rear side member support portion. According to a seventh aspect of the invention, the reinforcing body is formed of a steel pipe and formed into a frame structure ′, and the reinforcing body is formed into a substantially u-shaped or substantially V-shaped shape when viewed from the front (an inverted trapezoid or a semicircle may also be used). (4)). According to a seventh aspect of the present invention, the side frame is divided into a front side (four) of a substantially horizontal posture in the vicinity of the middle of the intermediate frame, and a rear side of the middle side of the intermediate frame, and the rear side is inclined as it goes backward. The upper side frame is fixed to the middle door at the front side frame and the left and right inner sides. On the other hand, the reinforcing body is at the front end of the rear side frame. One is fixed to the square: (4), wherein 'the member support portion disposed behind the gearbox is used to mount the portion, and the lower end of the engine cut portion is located above the above-mentioned variable box< The engine is arranged in a state of being biased downward, and the engine is attached to the upper surface of the chassis to be further lowered to the lower surface of the chassis, and is supported by the engine under the lower surface (invention effect) σ. According to the first invention, the member support portion is provided in front of or behind the gearbox 099138619 or on the front and rear sides. The structure support portion is provided to lower the center of gravity to arrange members such as an engine or a box. Therefore, the center of gravity of the traveling body can be lowered to improve the driving stability. Furthermore, the vehicle body can also be referred to as a traveling portion. The engine has considerable weight and its height position has an impact on the center of gravity of the car. Therefore, if the engine is supported by the front member support portion as in the second aspect of the invention, the engine is placed below the chassis, so that the center of gravity of the vehicle body can be reliably lowered. For this reason, it is very important to improve the performance of the line. As for which components are supported by the component support, it can be selected according to the type or configuration of the work machine. Patent Document 2 is a method in which the front side of the side frame is inclined, and therefore, it can be applied only to the engine to be placed on the bottom rib. However, in the case of the present invention, the engine support portion can be disposed in the case of the U-shaped invention. Behind the gearbox. In other words, the engine support portion of the second invention can also be used as the rear member support portion. Therefore, in this lx month, the flexibility of the configuration position of the engine is high. Further, in Patent Document 2, in order to lower the support height of the engine, it is necessary to increase the inclination angle of the (chassis) or increase the total length of the inclined portion, but

擎支3心种，㈣擎支撐料連結於底盤者，故弓I 不受二:=而設計，因此，支持引擎之高度可 剩而予以任意地設定。 此外，於本奉> @~ V 第 底盤無需為了設置引擎支撐 1，可防：：’故無需大幅改變其他構件之支持構造，因 ^ 〇卩制因設置；丨擎切部而引起設計成本或製造 099138619 201127274 成本之增加。 於第3發明之構成中，引擎支撐部為於前後開口之框架構 造，故引擎之下部可成為透風之開放構造，因此，行駛風亦 易於通過氣缸體或氣缸蓋，其結果可使冷卻性能提高。又， 由於引擎支撐部可兼用作為連結左右侧架之框架補強體，故 亦可有利於底盤之剛性提高。 引擎支撐部可例如採用設為板金製等之各種形態及構 造，但若如第4發明般採用正面觀察下呈U字形之支撐架， 則具有可以簡單之構造而牢固地支持引擎之優點。 於第4發明之情形時，引擎若係自前後兩側受支持則可確 保穩定性，因此，支撐架較佳為於前後配置複數個，但若如 第5發明般將支撐架於前後設置複數個並將該等複數個支 撐架藉由補強體而予以連結，則可確實地確保引擎之支持功 能，並且可明顯地提高支撐架之剛性，因此較佳。又，於第 5發明之構成中，補強體係突出於支撐架之下方，故補強體 亦具有保護引擎之防護作用，因此於安全性之方面亦較優 異。 於第6發明中，可將變速箱及後車軸箱兼用作為行駛機體 之強度構件。因此，行駛車體可一面實現輕量化，一面確保 堅固性。而且，可藉由下部連結體支持例如燃料箱等構件及 裝置類，但由於下部連結體位於較變速箱之上表面而更偏向 下側處，故被支持構件將可儘可能地配置較低，其結果為可 099138619 11 201127274 有利於行駛車體之穩定性提高或緻密化。 於第7發明中，侧架或中間架係與下部連結體連結，故底 盤與下部構造體可彼此相互補強，其結果為，可確保行駛機 體具有非常高之剛性。因此，即便為如例如8行栽種或10 行栽種之大型插秧機，亦可確保高堅固性。又，由於可確保 高堅固性，故亦可容易地實現於行駛機體安裝除栽插以外之 作業機而進行重型作業。如上所述，即便不設置構件支持 部，可確保堅固性之優點亦可發揮。因此，將底盤與下部連 結體藉由補強體而予以連結係可作為獨立之發明。 如上所述，乘用型插秧機係藉由油壓缸來轉動連桿機構而 使插秧裝置升降，油壓缸當然會受到較大負重之作用，因 此，若如實施形態般將氣缸連結於下部連結體，則對於下部 連結體，將受較大彎曲負重作用。然而，於本案之第7發明 中，底盤與下部連結體係藉由補強體而連結，由此可明顯地 提高下部連結體對於彎曲力之抵抗力，因此，即便於安裝有 氣缸之情況下，亦可確保高強度。 若採用第8發明，則可將燃料箱以下沉至底盤之下方之狀 態進行配置，故具有可實現燃料箱之大容量化之優點。 補強體可使用板材或型鋼等各種材料，且其形態亦可展現 為各種形態，但若採用第9發明，則補強體可由對鋼管進行 彎曲加工而簡單地製造，故於成本方面較優異。又，作用於 行駛機體之左右前輪及左右後輪之負重通常隨路上之條件 099138619 12 201127274 差異等而不同，由於此種負重之不均勻，多半會出現扭力作 用於行駛機體，但於第9發明中，補強體成為左右對稱形 狀，故行駛機體對於扭轉亦可發揮強大之強度。 若採用第10發明，則後側侧架之前端係於其正下方附近 由補強體所支持，故補強體之補強功能將可更準確地發揮， 從而可更進一步適合於強度提昇。 【實施方式】 其次，根據圖式對本發明之實施形態進行說明。本實施形 態係適用於乘用型插秧機（以下，僅簡稱為「插秧機」）。於 以下之說明及請求項中為了對方向予以特定，而使用「前後」 「左右」之用語，該等用語係以面向插秧機之前進方向而落 座之操作員作為基準來表示。正面觀察方向係指自與插秧機 之前進方向相對向之方向所觀察到之方向。 (1)插秧機之概要 首先，對插缺機之概要進行說明。如圖1〜圖2所示，插 秧機包含行駛車體1及插秧部2作為基本要素，插秧部2 係經由連桿裝置3而可升降自如地連結於行駛車體1之後 部。插秧部2可設為相對於連桿裝置3呈裝卸自如，亦可設 為非裝卸式。 行駛車體1係藉由左右之前輪4及後輪5來支持，且前輪 4及後輪5係藉由動力來驅動。再者，後輪5可安裝輔助輪 而構成為雙輪式或三輪式。此外，行駛車體1包含供駕駛員 099138619 13 201127274 落座之帶靠背座席6、及配置於其前方之操縱方向盤7。座 席6及操縱方向盤7係配置於行歇車㈣1之卢右中門 於座席6之前方且左右兩側之部分配.置有預備苗台二置昭 圖2)。再者，於圖2中，預備苗台8僅表示出骨架。〜 例如，如根據圖3〜5可大概理解，行驶車體】包含向前 後方向延伸之左右前部㈣9及後部織丨心左右之後部 側架10係較前部側架9間隔更窄，且前後側架9、1〇係經 由左右橫長之中間架11連結。左右之前侧架9係於其前端 部藉由前架12而連結。 後部側架H)係以越向後走則高度越高之方式於侧面觀察 下向後傾’於左右之後部側架10後端連結有左右橫長之後 架13。於後架Π固著有將其予以支持之左右後支柱14。後 支柱14係配置於較後部側架1〇更靠内側。各框架中，中間 架11及後架13係使用圓管（圓形鋼管），其他框架係使用角 管（角形鋼管）。 於後架13之稍近刚方配置有後部橫長撐桿(stay)17，該後 部橫長撐桿17係固著於正面觀察下呈大致u字形之吊架型 托架(hangerbraCket)18(參照圖4、5)，此外，吊架型托架18 係焊接於後部側架10。 於左右之後部側架10前端部固著有向下開口之門型（倒U 型）架19,於該門型架19固著有座部支持單元2〇(參照圖i) 之前端部。座部支持單元20之後部係固定於未圖示之撐 099138619 14 201127274 若使座席6前傾轉 桿。於座席6之下方配置有燃料箱21 動則可對燃料箱21加油。 於前部側架9固著有向少+从厂 二右外側突出之複數條向外枝架 15，且經減而切有預備。又，於側架Μ 之外侧配置有刖独長之輔助架23，且辅助架Μ係固著於 枝架15或後部橫長撐桿17、後架13。 於本實施形態中，係由前後側架9、1〇、中間架U、前架 12、後架13等框架材料構成底盤(框架構造體）。如圖2所 不，行駛車體1中載人之部分係由車蓋24覆蓋，且車蓋24 係藉由釗部側架9、枝架15、辅助架23、後部橫長撐桿I?、 後架13等而支持。於座席6之後方大多配置施肥裝置，但 於本實施形態中省略圖示。 操縱方向盤7係安裝於内置在方向盤柱(handlepost)25之 方向盤轴。如圖2所示，車蓋24中座席6與方向盤柱25 之間之部位係成為人以站立或落座狀態搁腳之操縱踏板 24a，且於操縱踏板24a之近前方側配置有引擎26(引擎26 之支持構造將於後文加以敍述）。引擎26係由引擎頂蓋 (bonnet)自前後覆蓋。 例如，如圖5所示，於引擎26之後方配置有内置有齒輪 組之變速箱27。例如，如圖3所示，於變速箱27之左側面 安裝有作為無級變速器之一例之HST(靜油壓式無級變速器 (hydraulic stepless transmission))28 ’ 引擎 26 之動力係一次 099138619 15 201127274 性地藉由傳送帶29而傳遞至HST28，然後傳遞至齒輪組。 於變速箱27中，除齒輪組以外，亦内置有離合器或刹車等， 但其與本發明並無直接之關聯，故省略說明。 例如，如圖5所示，於傳送帶29自下方抵接有張力滑輪 (tension pulley)30。張力滑輪30係安裝於轉動式臂31之前 端。於變速箱27之前部安裝有動力轉向單元32，且於動力 轉向單元32固定有方向盤柱25。 例如，如圖3所示，於變速箱27之左右側面安裝有前車 軸裝置33，於前車軸裝置33安裝有前輪4。後輪5係安裝 於後車軸箱34。後車軸箱34包含左右之向後伸出部34a， 且於突出設置在向後伸出部34a之車軸固定有後輪5。又， 於左右之向後伸出部34a橫跨固定有橫樑構件35，並於橫 樑構件35固定有後支柱14。 如根據圖3〜5可理解，變速箱27之後端與後車軸箱34 之前端係藉由圓管製之下部連結體(接頭）36而連結，且下部 連結體3 6與中間架11係藉由作為補強體之一例之正面觀察 下呈U型之補強架37而連結。於下部連結體36與座席6 之間配置有燃料箱21，燃料箱21係經由支承材料38而由 下部連結體36所支持。支承材料亦可稱為後支撐部。 又，如圖3、4所示，於下部連結體36，經由托架40以 將升降氣缸之前端作為中心而進行轉動之方式連結有側面 觀察下呈後傾姿勢之升降氣缸（油壓缸)39。圖1所示之連桿 099138619 16 201127274 裝置3係藉由升降氣缸39之伸縮動作而轉動，且伴隨於此 可使插秧部2進行升降。 例如，如圖3所示，隔著下部連結體36而於左侧配置有 後輪驅動軸41，於右侧配置有作業動力軸42。當然，後輪 5係與前輪4同步旋轉。於設置有整地轉子之情形時，整地 轉子係藉由後輪驅動軸41來驅動。藉由作業動力軸42來驅 動插秧部2(於設置有施肥裝置之情形時，該施肥裝置亦藉 由作業動力軸42來進行驅動）。作業動力軸42係經由株距 調節裝置43而將動力傳遞至插秧部2。 (2)引擎及其支持構造 其次，對引擎26進行說明。本實施形態之引擎26係水冷 柴油引擎，其被配置為將曲柄軸設為左右橫長之橫置姿勢。 引擎26係基本上與先前為相同之構成，例如，如根據圖6 可容易地掌握，其大致要素包括有：包含曲柄箱、氣缸體、 氣缸蓋之機械本體44、及配置於機械本體44之右側散熱器 (radiator)45。 如圖6所明示，引擎26之輸出軸（曲柄軸)48係自機械本 體44之左側面突出，且於該輸出軸48固定有飛輪49及輸 出滑輪50。藉由捲繞於輸出滑輪50之傳送帶29而可將動 力傳遞至上述HST28(參照圖1、4、5、10)。 於飛輪49之左正側面配置有消音器51。消音器51於平 面觀察下係配置於前部側架9與輔助架23之間，並藉由固 099138619 17 201127274 定於㈣側架9及辅助架23之撐桿52而懸撐。消音器51 係由罩蓋53所覆蓋（參照圖9)。 再者’如圖5所示，於機械本體44之左側面部固定有位 於飛輪49内側之圓板54， 1女裝有張力滑輪5〇之轉 臂31係經由拕架而安裝於圓板。 支=6所示’於左右前部側架9之大致前半部連結有 ;木二引擎26之機械本體料係藉由該支撐架％來 右之垂直部（縣部）及連料=料，其触為包含左 察下呈橫長之u字形，並以之下水平部之正面觀 側年9 乂懸掛之狀態安裝於左右之前部 前後2 撐架55亦可稱為前部支撐部。 刖後之支撐架55係於复 結框架说而連結，且由該等力間部11由框架補強體(連 成記载於請求财之料# 55及框㈣強體56構 強體56係於側面觀察下彎曲^(前侧構件支持部）。框架補 之下方突出。U 成向下之突形，且向支撐架55 能。 卜㈣_體56亦具有體26之防護功 於前後支撐架55之右 托架57支#右## 固著有側托架57,且藉由該侧 又得有散熱器45。髩也。。 而由側托架”所支持。側二二:經由橡膠等緩衝材 自其前後兩端横向突出之/ 係心前後橫長之基部及 焊接於前部側架9之 内伸出部之形態。支撐架55係 _3_ 了表面’但亦可焊接或螺固於前部側架 201127274 9之内側面或外侧面。雖無需進行敍述，但支撐架55亦可 經由托架固定於前部側架9。 於前後支撐架55之下水平部’藉由焊接而固定有支持引 擎26之左右各一對下托架59。前側之下托架59係自前側 之支撐架55向前延伸’後側之下托架59係自後側之支撐架 55向後延伸’且各下托架59係以其前端變高之方式相對於 水平呈傾斜。因此，前後之下托架59於側面觀察下成為越 向下走則間隔越窄之傾斜姿勢。 另一方面，如圖7所明示，於機械本體44之下部前後兩 面藉由螺桿61而分別固定有左右橫長之上托架6〇。上托架 60係構成為剖面大致呈L形，且於其左右兩端部設置有與 下托架59平行地延伸之支持片6〇a，並於該支持片6〇a與 下托架59之間***有吸振單元62。 吸振單το 62係於上板63與下板64之間夾著橡膠等緩衝 材料65而將整體形成一體化之構造，且使螺桿66貫通於上 板63、下板64及緩衝材65 ,並對螺桿66螺入螺帽，藉 此緊固上托架60與下托架59。於吸振單元62之上板63及 下板54彎折形成有兼顧補強之側板63a、64a。螺桿66可 固定於上板63及下板64中之任一者，亦可僅單純地貫通於 兩者。 於上托架60之支持片 66嵌入之圓孔68，另— 6〇a穿設有供吸振單元62之螺桿 方面，於下托架59切開形成用以嵌 099138619 19 201127274 入吸振單元62之螺桿66之槽孔69。亦可於下托架59穿設 圓孔，但若如本實施形態般採用形成槽孔69而自前方或後 方嵌入螺桿66之方式，則具有可容易地進行引擎26之組裝 作業之優點。 於實施形態中，槽孔69之開口部係呈錐狀擴展，因此可 容易地進行螺桿66之嵌入。又，若如實施形態般將前後之 下托架59設為於側面觀察下越向下走則間隔越窄之傾斜姿 勢，則引擎26將呈現因其自身重量而位置保持於前後之下 托架59之間之傾向，故具有優異之姿勢保持功能。 如圖6所示，於後側之支撐架55之大致左右中間部連結 有向後突出之後托架70。如圖6所示，於後托架70之前端 貫通有銷71，且後托架70係藉由該銷71而連結於變速箱 27。因此，於本實施形態中，變速箱27亦兼用作為行駛車 體1之構造材料（強度構件）。 即，於本實施形態中，藉由前後左右之側架9、10、前架 12、中間架11、後架13、後支柱14等之框架材而構成底盤， 同時該等底盤及變速箱27、下部連結體36、後車軸箱34 係共同構成行駛車體1之骨架。 (3)總結 於以上構成中，引擎26係成為較前部側架9之下表面更 向下方下沉之狀態，同時成為較變速箱27之上表面更向下 方下沉之狀態，且以如上所述般向下方下沉之狀態由支撐架 099138619 20 201127274 55所支持，故可降低行駛車體1之重心而使行駛穩定性提 南。 而且，由於前部側架9只要保持為水平姿勢之狀態即可， 故於支持車蓋24或預備苗台8時，只要採用將向外枝架15 固定於前部側架9並於該向外枝架15固定輔助架23等之簡 單支持構造即可。因此，可防止因降低引擎26而引起該引 擎26之周圍構成之複雜化。 若如本實施形態藉由固定於前部側架9之支撐架55來支 持引擎26,則由前架12及左右之前部側架9所包圍之空間 將成為引擎26之配置空間，故前架12及左右之前部側架9 實質上亦具有引擎26之防護功能。該點可謂本實施形態之 優點。 引擎26亦可以曲柄軸向前後方向延伸姿勢之縱置來進行 配置，但由於引擎26通常在曲柄軸之軸方向較長，故存在 當縱置時則行駛車體之全長會變長之虞。對此，若如本實施 形態將引擎26配置為橫置，則具有可抑制行駛車體1變長 之優點。又，向變速裝置之傳遞動力亦可藉由傳送帶29而 簡單地進行。 又，若將引擎26之動力藉由傳送帶29而傳遞至變速箱 27(HST28)，則在引擎26及變速箱27中，如藉由傳送帶29 而彼此拉扯之外力會發生作用，但於本實施形態中，後侧之 支撐架55與變速箱27係經由後托架70連結，且支撐架55 099138619 21 201127274 與變速箱27之間隔保持固定，故支撐架55並不受到將該支 撐架55向後拉扯之外力作用，其結果為，可牢固地保持引 擎26與變速箱27之位置關係，同時亦可確保支撐架55對 於前部側架9之固定強度。 載置散熱器45之側托架57亦可固定於前部側架9，但若 如本實施形態般固定於前後之支撐架55，則側托架57可兼 用作為固定前後支撐架55之補強體，故具有以支撐架55 作為主體而構成之引擎支持構造體之堅固性將明顯提高之 優點。 (4)消音器之冷卻 由於引擎26之消音器51會因排放氣體而變為高溫，故若 有可能則宜進行冷卻。然而，先前實情上並未進行對消音器 51進行冷卻之精心研究。雖說如此，設置用以冷卻消音器 51之風扇或導管（duct)，在成本方面之缺點更大。 與此相對，於本實施形態中，則可於抑制成本提昇之狀態 下冷卻消音器51。即，利用在飛輪49之附近配置有消音器 51之技術手段，而如圖10中以變形例所模式性地表示般， 於飛輪49之外面固定冷卻風扇72，藉由該冷卻風扇72之 風來冷卻消音器51。 由於如上所述簡單地構成為僅於飛輪49之外面固定冷卻 風扇72，故不會造成大幅度之成本提昇。亦可於飛輪49 一 體形成送風用散熱片。再者，消音器51亦可包含後燃器功 099138619 22 201127274 能或排放氣體淨化功能。 (5)行駛車體之後半部構造 其次，對行駛車體1中較變速箱27更靠後側部位之詳細 構造進行說明。首先，對下部連結體36與變速箱27、及下 部連結體36與後車軸箱34之連結構造進行說明。該連結構 造係明確地表示於圖11(A)。即，於下部連結體36之前端 係藉由焊接而固著前支持板74，並將其經由螺桿74'而緊固 於變速箱27之後面，於下部連結體36之後端藉由焊接而固 著有後支持板75，並將該後支持板75經由螺桿75’而緊固 於後車轴箱3 4之前面。 支持板74、75係構成為四方形，但可視需要選擇任意形 狀。如圖15所示，於下部連結體36之前端設置有向前支持 板74之前方突出之凸型嵌合部36a，另一方面，於變速箱 27之後面形成有可供凸型嵌合部36a恰好嵌入之凹型嵌合 部（未圖示），且藉由該等凹凸嵌合部之嵌合來達成緊固強度 之提昇。亦可於下部連結體36及後車軸箱34設置嵌合部。 補強架37係由圓管（圓鋼管）製造。該補強架37將於下文 進行說明。例如，如圖12所示，變速箱27被配置於較中間 架11之上表面更靠下方處，且下部連結體36固定於變速箱 27之下端部。若更進一步敍述，於變速箱27之内部，齒輪 組係上下高度不同地進行配置，因此變速箱27之上下尺寸 差異相當大。 099138619 23 201127274 下部連結體36被固定於變速箱27之下端部，因此，下部 連結體36係配置於前部側架9及中間架11之相當靠下方 處，後輪驅動軸41於側面觀察下以與下部連結體36大致平 行之姿勢連接於後車軸箱34。 而且，補強架37係以越向下走則高度越低之方式於側面 觀察下呈現前傾之姿勢，左右之上端係藉由焊接而固著於中 間架11。又，如圖16(A)所明示，於補強架37之底部37a 固著有包含左右向下片38a之正面觀察下呈向下開口槽形 之支承材料38，另一方面，於下部連結體36固著有以覆蓋 支承材料38之方式嵌入之支持托架77，並將支承材料38 與支持托架77藉由左右橫長之銷78加以連結。再者，亦可 使用螺桿及螺帽來代替銷78，利用該等予以緊固，或者亦 可將補強架37藉由焊接而固定於下部連結體36。 於支承材料38設置有左右一對橡膠座79，且藉由該橡膠 座79支持燃料箱21之下表面。如圖16(A)所示，於燃料箱 21之下表面中橡膠座79之支持部的近前方設置有向下突出 部21a，於該向下突出部21a設置有燃料之出口 80,且燃料 係自出口 80經由過濾器（未圖示）而輸送至引擎26。由於引 擎26係以柴油方式經由泵強制性地輸送燃料，故即便燃料 箱21之出口 70靠引擎26下方亦無妨。 如圖12(B)所明示，於燃料箱21設置有前後一對凸緣8卜 82,且前部凸緣81係藉由螺釘而固定於固著在中間架11 099138619 24 201127274 之箱托架83。另—方面，燃料箱21之後部凸緣幻係藉由 螺釘而緊固於設置在圖4、5所示之吊架型托架18之托架板 18a。燃料箱21之加油口 84係位於座席6之下方，若將座 席6向前傾倒則可使加油口 54露出。 例如，如根據圖12(B)可很好地理解，於燃料箱21之上 表面形成有向左側方及前方開放之階差部85。於該階差部 Μ之部位可配置例如油壓單元86。藉由油壓單元％，可控 制油壓缸39等油壓機器。當然，於階差部85之部位亦可： 置其他構件，且亦可不設置階差部85。 (6)連桿機構及油壓缸 其次，對連桿機構3及油壓缸39進行說明。如_ Η及圖 18所不，連桿機構3包含有分為上下而配置之上連桿88及 下連桿89，於兩連桿88、89之後端藉由第i銷9G及第2 191而結有連錢92。於連接器92之下The engine is supported by 3 cores. (4) The support material is connected to the chassis. Therefore, the bow I is not designed for the second:=. Therefore, the height of the support engine can be arbitrarily set. In addition, in the Fengshen > @~ V chassis does not need to set up the engine support 1, can prevent:: 'Therefore, there is no need to significantly change the support structure of other components, because of the setting of the system; Or manufacturing 099138619 201127274 cost increase. In the configuration of the third aspect of the invention, since the engine support portion has a frame structure that is open at the front and rear, the lower portion of the engine can be opened to the air, so that the traveling wind can easily pass through the cylinder block or the cylinder head, and as a result, the cooling performance can be improved. . Further, since the engine support portion can also be used as a frame reinforcing body that connects the left and right side frames, the rigidity of the chassis can be improved. For example, the engine support portion can be configured in various forms and configurations such as sheet metal. However, if the U-shaped support frame is viewed from the front as in the fourth invention, the engine can be firmly supported by the structure. In the case of the fourth invention, if the engine is supported from the front and rear sides, stability can be ensured. Therefore, the support frame is preferably arranged in plural numbers before and after, but if the support frame is provided in front and rear as in the fifth invention By connecting the plurality of support frames by the reinforcing body, the support function of the engine can be surely ensured, and the rigidity of the support frame can be remarkably improved, which is preferable. Further, in the configuration of the fifth invention, since the reinforcing system protrudes below the support frame, the reinforcing body also has a protective effect against the engine, and therefore is superior in terms of safety. According to the sixth aspect of the invention, the transmission case and the rear axle box can be used together as the strength member of the traveling body. Therefore, the vehicle body can be made lightweight while ensuring rigidity. Moreover, members and devices such as a fuel tank can be supported by the lower connecting body, but since the lower connecting body is located at a lower side than the upper surface of the gearbox, the supported member can be configured as low as possible. The result is 099138619 11 201127274 which is advantageous for the stability or densification of the traveling vehicle body. According to the seventh aspect of the invention, the side frame or the intermediate frame is coupled to the lower connecting body, so that the chassis and the lower structure can complement each other strongly, and as a result, the traveling body can have a very high rigidity. Therefore, even a large rice transplanter that is planted, for example, in 8 rows or 10 rows, can ensure high robustness. Further, since the high rigidity can be ensured, it is also possible to easily carry out heavy work by installing a work machine other than the planting body. As described above, even if the component supporting portion is not provided, the advantage of ensuring the robustness can be exerted. Therefore, the connection between the chassis and the lower connecting body by the reinforcing body can be regarded as an independent invention. As described above, the passenger-type rice transplanter rotates the link mechanism by the hydraulic cylinder to raise and lower the rice transplanting device, and the hydraulic cylinder is of course subjected to a large load. Therefore, if the cylinder is connected to the lower portion as in the embodiment For the connected body, the lower connecting body will be subjected to a large bending load. However, in the seventh invention of the present invention, the chassis and the lower connecting system are coupled by the reinforcing body, whereby the resistance of the lower connecting body to the bending force can be remarkably improved, and therefore, even in the case where the cylinder is mounted, It ensures high strength. According to the eighth aspect of the invention, since the fuel tank can be placed below the chassis, the fuel tank can be increased in capacity. The reinforcing body can be made of various materials such as a plate or a steel, and its form can be expressed in various forms. However, according to the ninth invention, the reinforcing body can be easily manufactured by bending a steel pipe, and is excellent in cost. Moreover, the load on the left and right front wheels and the left and right rear wheels of the traveling body generally differs depending on the conditions of the road conditions 099138619 12 201127274, and because of the unevenness of the load, most of the torque will occur on the traveling body, but in the ninth invention In the middle, the reinforcing body has a bilaterally symmetrical shape, so that the traveling body can exert a strong strength for twisting. According to the tenth aspect of the invention, the front end of the rear side frame is supported by the reinforcing body in the vicinity of the front side of the rear side frame, so that the reinforcing function of the reinforcing body can be more accurately exerted, so that it can be further adapted to the strength improvement. [Embodiment] Next, an embodiment of the present invention will be described based on the drawings. This embodiment is applied to a passenger-type rice transplanter (hereinafter, simply referred to as a "plug-in machine"). In the following descriptions and claims, in order to specify the direction, the terms "before and after" and "left and right" are used, and these terms are expressed by the operator who is seated in front of the rice transplanter. The front viewing direction refers to the direction observed from the direction opposite to the forward direction of the rice transplanter. (1) Outline of rice transplanter First, the outline of the plug-in machine will be described. As shown in Fig. 1 to Fig. 2, the plug-in machine includes a traveling vehicle body 1 and a plug portion 2 as basic elements, and the plug portion 2 is connected to the rear portion of the traveling vehicle body 1 so as to be movable up and down via the link device 3. The insertion portion 2 can be detachably attached to the link device 3, or can be provided as a non-detachable type. The traveling vehicle body 1 is supported by the left and right front wheels 4 and the rear wheels 5, and the front wheels 4 and the rear wheels 5 are driven by power. Further, the rear wheel 5 can be mounted with an auxiliary wheel and configured as a two-wheel type or a three-wheel type. Further, the traveling vehicle body 1 includes a backrest seat 6 for the driver 099138619 13 201127274, and a steering wheel 7 disposed in front of the vehicle. The seat 6 and the steering wheel 7 are arranged in the middle of the rest of the seat (four) 1 and the left and right sides of the seat are placed in front of the seat 6 and are arranged on the left and right sides. Furthermore, in Fig. 2, the preliminary seedling table 8 only shows the skeleton. ~ For example, as can be understood from FIGS. 3 to 5, the traveling vehicle body includes left and right front portions (four) 9 extending in the front-rear direction and rear left and right rear side frames 10 being narrower than the front side frames 9 and The front and rear side frames 9, 1 are connected via the intermediate frame 11 which is horizontally long and left. The left and right front side frames 9 are connected to the front end portion thereof by the front frame 12. The rear side frame H) is inclined rearwardly as viewed from the side as it goes rearward. The frame 13 is connected to the rear end of the left and right rear side frames 10 at the rear end of the left and right rear side frames. The left and right rear pillars 14 are supported by the rear frame to support them. The rear pillars 14 are disposed on the inner side of the rear side frame 1A. In each of the frames, a circular tube (a circular steel tube) is used for the intermediate frame 11 and the rear frame 13, and a corner tube (angular steel tube) is used for the other frames. A rear horizontally long stay 17 is disposed on the slightly rear side of the rear frame 13, and the rear horizontally long stay 17 is fixed to a hanger-type bracket (hangerbraCket) 18 having a substantially U-shape in front view. 4 and 5), the hanger type bracket 18 is welded to the rear side frame 10. A door type (inverted U-shaped) frame 19 that is opened downward is fixed to the front end portion of the left and right rear side frames 10, and the front end portion of the seat supporting unit 2 (see FIG. i) is fixed to the door frame 19. The rear portion of the seat support unit 20 is fixed to a support (not shown). 099138619 14 201127274 If the seat 6 is tilted forward. When the fuel tank 21 is disposed below the seat 6, the fuel tank 21 can be refueled. The front side frame 9 is fixed with a plurality of outer branches 15 protruding from the right outer side of the factory, and is cut and prepared. Further, an auxiliary frame 23 which is uniquely long is disposed outside the side frame, and the auxiliary frame is fixed to the branch frame 15, the rear horizontally long stay 17, and the rear frame 13. In the present embodiment, the chassis (frame structure) is constituted by a frame material such as the front and rear side frames 9, 1 〇, the intermediate frame U, the front frame 12, and the rear frame 13. As shown in Fig. 2, the portion of the vehicle body 1 that is carried by the vehicle body is covered by the hood 24, and the hood 24 is supported by the side frame 9, the branch frame 15, the auxiliary frame 23, and the rear horizontal struts I. Supported by the rear frame 13 and so on. The fertilizing device is often disposed after the seat 6, but the illustration is omitted in the present embodiment. The steering wheel 7 is mounted on a steering wheel shaft built in a handlepost 25. As shown in FIG. 2, the portion between the seat 6 and the steering column 25 in the hood 24 serves as an operating pedal 24a for a person to stand in a standing or seated state, and an engine 26 (engine) is disposed on the near front side of the operating pedal 24a. The supporting structure of 26 will be described later). The engine 26 is covered by the engine bonnet from front to back. For example, as shown in Fig. 5, a gearbox 27 having a gear train built therein is disposed behind the engine 26. For example, as shown in FIG. 3, an HST (hydraulic stepless transmission) 28' engine 26 as an example of a continuously variable transmission is mounted on the left side of the transmission 27 once. 099138619 15 201127274 It is transferred to the HST 28 by the conveyor belt 29 and then to the gear train. In the transmission case 27, a clutch or a brake is incorporated in addition to the gear train, but it is not directly related to the present invention, and thus the description thereof will be omitted. For example, as shown in Fig. 5, a tension pulley 30 is abutted on the conveyor belt 29 from below. The tension pulley 30 is attached to the front end of the rotary arm 31. A power steering unit 32 is attached to the front portion of the transmission case 27, and a steering column 25 is fixed to the power steering unit 32. For example, as shown in Fig. 3, a front axle device 33 is attached to the left and right side faces of the transmission case 27, and a front wheel 4 is attached to the front axle device 33. The rear wheel 5 is attached to the rear axle box 34. The rear axle box 34 includes left and right rearward projecting portions 34a, and a rear wheel 5 is fixed to an axle projecting from the rearward projecting portion 34a. Further, the cross member 35 is fixed across the left and right rearward projecting portions 34a, and the rear pillars 14 are fixed to the cross member 35. As can be understood from FIGS. 3 to 5, the rear end of the transmission case 27 and the front end of the rear axle housing 34 are connected by a circular control lower joint (joint) 36, and the lower joint body 36 and the intermediate frame 11 are borrowed. The U-shaped reinforcing frame 37 is connected by a front view as an example of a reinforcing body. A fuel tank 21 is disposed between the lower connecting body 36 and the seat 6, and the fuel tank 21 is supported by the lower connecting body 36 via the supporting material 38. The support material may also be referred to as a rear support. Further, as shown in FIGS. 3 and 4, the lower connecting body 36 is connected to the lifting cylinder (hydraulic cylinder) which is tilted rearward when viewed from the front end of the lifting cylinder via the bracket 40. 39. The connecting rod shown in Fig. 1 099138619 16 201127274 The apparatus 3 is rotated by the expansion and contraction operation of the lift cylinder 39, and the plug portion 2 can be moved up and down accordingly. For example, as shown in Fig. 3, the rear wheel drive shaft 41 is disposed on the left side via the lower joint body 36, and the work power shaft 42 is disposed on the right side. Of course, the rear wheel 5 is rotated in synchronization with the front wheel 4. When the ground rotor is provided, the ground rotor is driven by the rear wheel drive shaft 41. The insertion portion 2 is driven by the work power shaft 42 (when the fertilizer application device is installed, the fertilizer application device is also driven by the work power shaft 42). The working power shaft 42 transmits power to the transplanting portion 2 via the plant spacing adjusting device 43. (2) Engine and Support Structure Next, the engine 26 will be described. The engine 26 of the present embodiment is a water-cooled diesel engine which is disposed such that the crankshaft is placed in a horizontally long and horizontally long posture. The engine 26 is basically the same as the previous one. For example, as can be easily grasped according to FIG. 6, the general elements include: a mechanical body 44 including a crankcase, a cylinder block, a cylinder head, and a mechanical body 44. The right side radiator (radiator) 45. As shown in Fig. 6, the output shaft (crankshaft) 48 of the engine 26 protrudes from the left side surface of the mechanical body 44, and the flywheel 49 and the output pulley 50 are fixed to the output shaft 48. The power can be transmitted to the HST 28 (see Figs. 1, 4, 5, 10) by the conveyor belt 29 wound around the output pulley 50. A muffler 51 is disposed on the left side of the flywheel 49. The muffler 51 is disposed between the front side frame 9 and the auxiliary frame 23 in a plane view, and is suspended by the struts 52 of the side frame 9 and the auxiliary frame 23 fixed by the solids 099138619 17 201127274. The muffler 51 is covered by a cover 53 (refer to Fig. 9). Further, as shown in Fig. 5, a circular plate 54 positioned inside the flywheel 49 is fixed to the left side surface of the machine body 44, and a steering arm 31 having a tension pulley 5 is attached to the circular plate via a truss. The branch shown in Fig. 6 is connected to the substantially front half of the left and right front side frames 9; the mechanical body of the wooden second engine 26 is the right vertical part (prefecture) and the lining material by the support frame %. The contact is attached to the U-shape which is horizontally left and left, and is attached to the left and right front portions in a state in which the front side of the lower horizontal portion is suspended by 9 乂. The second bracket 55 may also be referred to as a front support portion. The rear support frame 55 is connected to the composite frame, and the force reinforcement is supported by the frame between the force portions 11 (connected to the request for the material #55 and the frame (four) strong body 56 strong body 56 system Bending under the side view ^ (front side member support portion). The frame complement is protruded downward. U is formed into a downward shape and can be applied to the support frame 55. (4) _ body 56 also has the protection of the body 26 for front and rear support The right bracket 57 of the frame 55 #右## is fixed with the side bracket 57, and by this side, there is a radiator 45. The 髩 is also supported by the side bracket. The side two two: via a cushioning material such as rubber which protrudes laterally from the front and rear ends thereof and a base portion which is horizontally long before and after the center of the core and an inner protruding portion welded to the front side frame 9. The support frame 55 is _3_ surface 'but may be welded or The screw is fixed to the inner side or the outer side of the front side frame 201127274. Although not described, the support frame 55 can also be fixed to the front side frame 9 via the bracket. The horizontal portion below the front and rear support frames 55 A pair of left and right lower brackets 59 supporting the engine 26 are fixed by welding. The front lower bracket 59 is extended forward from the front side support bracket 55' rear side The lower bracket 59 is extended rearward from the support frame 55 on the rear side, and each of the lower brackets 59 is inclined with respect to the horizontal direction so that the front end thereof becomes higher. Therefore, the brackets 59 in the front and rear are viewed from the side. On the other hand, as shown in Fig. 7, on the front and rear surfaces of the lower portion of the machine body 44, the left and right horizontally long upper brackets 6〇 are respectively fixed by screws 61. The upper bracket 60 The utility model is configured to have a substantially L-shaped cross section, and a support piece 6〇a extending parallel to the lower bracket 59 is disposed at the left and right end portions thereof, and a support piece 6〇a is inserted between the support piece 6〇a and the lower bracket 59. The vibration absorbing unit 62. The vibration absorbing unit το 62 is a structure in which the buffer plate 65 such as rubber is interposed between the upper plate 63 and the lower plate 64, and the entire structure is integrated, and the screw 66 is penetrated through the upper plate 63, the lower plate 64, and the buffer. The material 65 is screwed into the nut by the screw 66, thereby fastening the upper bracket 60 and the lower bracket 59. The upper plate 63 and the lower plate 54 of the vibration absorbing unit 62 are bent to form side plates 63a and 64a which are reinforced. The screw 66 may be fixed to either of the upper plate 63 and the lower plate 64, or may simply pass through both. The support piece 66 of the bracket 60 is embedded in the circular hole 68, and the other 6 〇a is provided with a screw for the vibration absorbing unit 62, and is cut at the lower bracket 59 to form a screw 66 for inserting 099138619 19 201127274 into the vibration absorbing unit 62. The slot 69 may be provided with a circular hole in the lower bracket 59. However, if the slot 66 is formed in the slot and the screw 66 is inserted from the front or the rear as in the embodiment, the assembly of the engine 26 can be easily performed. In the embodiment, the opening of the slot 69 is tapered, so that the screw 66 can be easily inserted. Further, as in the embodiment, the bracket 59 is placed on the side and the lower side. When the downward posture is the narrower inclination posture, the engine 26 will have a tendency to maintain the position between the front and rear brackets 59 due to its own weight, so that it has an excellent posture maintaining function. As shown in Fig. 6, the bracket 70 is protruded rearward from the substantially right and left intermediate portions of the support frame 55 on the rear side. As shown in Fig. 6, a pin 71 is inserted through the front end of the rear bracket 70, and the rear bracket 70 is coupled to the transmission case 27 by the pin 71. Therefore, in the present embodiment, the transmission case 27 also serves as a structural material (strength member) of the traveling vehicle body 1. That is, in the present embodiment, the chassis is constituted by frame materials such as the front and rear side frames 9, 10, the front frame 12, the intermediate frame 11, the rear frame 13, and the rear pillar 14, and the chassis and the gearbox 27 are simultaneously provided. The lower connecting body 36 and the rear axle box 34 collectively constitute a skeleton of the traveling vehicle body 1. (3) In the above configuration, the engine 26 is in a state of sinking downward from the lower surface of the front side frame 9, and at the same time, it is in a state of sinking downward from the upper surface of the transmission case 27, and The state of the downward sinking is supported by the support frame 099138619 20 201127274 55, so that the center of gravity of the traveling vehicle body 1 can be lowered to promote the driving stability. Further, since the front side frame 9 is only required to be in a horizontal posture, when the hood 24 or the preliminary seedling table 8 is supported, the outer branch frame 15 is fixed to the front side frame 9 in this direction. The outer branch frame 15 may be fixed by a simple support structure such as the auxiliary frame 23. Therefore, the complexity of the surrounding configuration of the engine 26 caused by the reduction of the engine 26 can be prevented. If the engine 26 is supported by the support frame 55 fixed to the front side frame 9 as in the present embodiment, the space surrounded by the front frame 12 and the left and right front side frames 9 will become the space for the arrangement of the engine 26, so the front frame The 12 and left front side frames 9 also substantially have the protective function of the engine 26. This point is an advantage of this embodiment. The engine 26 may be disposed vertically in the longitudinal direction of the crankshaft. However, since the engine 26 is generally long in the axial direction of the crankshaft, there is a case where the length of the vehicle body becomes long when it is placed vertically. On the other hand, if the engine 26 is disposed to be horizontally placed as in the present embodiment, there is an advantage that the traveling vehicle body 1 can be prevented from becoming long. Further, the transmission of power to the transmission can be easily performed by the conveyor belt 29. Further, when the power of the engine 26 is transmitted to the transmission case 27 (HST 28) by the conveyor belt 29, the engine 26 and the transmission case 27 are pulled by the belt 29, and the force acts. In the form, the support frame 55 on the rear side and the transmission case 27 are coupled via the rear bracket 70, and the spacing between the support frame 55 099138619 21 201127274 and the gearbox 27 is fixed, so the support frame 55 is not subjected to the support frame 55 backward. The external force is pulled, and as a result, the positional relationship between the engine 26 and the gearbox 27 can be firmly maintained, and the fixing strength of the support frame 55 to the front side frame 9 can be ensured. The side bracket 57 on which the radiator 45 is placed may be fixed to the front side frame 9. However, if it is fixed to the front and rear support frames 55 as in the present embodiment, the side bracket 57 can also serve as a reinforcing for fixing the front and rear support frames 55. Therefore, there is an advantage that the robustness of the engine support structure formed by the support frame 55 as a main body is remarkably improved. (4) Cooling of the muffler Since the muffler 51 of the engine 26 is heated to a high temperature due to the exhaust gas, it is preferable to perform cooling if possible. However, careful research on the cooling of the silencer 51 has not been conducted in the past. In spite of this, the provision of a fan or duct for cooling the muffler 51 is more disadvantageous in terms of cost. On the other hand, in the present embodiment, the muffler 51 can be cooled while suppressing an increase in cost. That is, by using a technical means in which the muffler 51 is disposed in the vicinity of the flywheel 49, as shown in a modified example in Fig. 10, the cooling fan 72 is fixed to the outside of the flywheel 49, and the wind of the cooling fan 72 is used. To cool the silencer 51. Since the cooling fan 72 is simply fixed to the outer surface of the flywheel 49 as described above, it does not cause a significant cost increase. The air supply fins may also be formed integrally with the flywheel 49. Furthermore, the silencer 51 may also include an afterburner function 099138619 22 201127274 or an exhaust gas purification function. (5) Structure of the rear half portion of the traveling vehicle body Next, the detailed structure of the rear side portion of the traveling vehicle body 1 corresponding to the transmission case 27 will be described. First, the connection structure between the lower connecting body 36 and the transmission case 27, and the lower connecting body 36 and the rear axle housing 34 will be described. This structure is clearly shown in Fig. 11(A). That is, the front support plate 74 is fixed to the front end of the lower connecting body 36 by welding, and is fastened to the rear surface of the transmission case 27 via the screw 74', and is fixed to the rear end of the lower connecting body 36 by welding. A rear support plate 75 is formed, and the rear support plate 75 is fastened to the front surface of the rear axle box 34 via a screw 75'. The support plates 74, 75 are formed in a square shape, but any shape may be selected as needed. As shown in Fig. 15, a convex fitting portion 36a that protrudes forward of the front support plate 74 is provided at the front end of the lower connecting body 36, and a convex fitting portion is formed on the rear surface of the transmission case 27. The concave fitting portion (not shown) is fitted into the 36a, and the fastening strength is improved by the fitting of the concave-convex fitting portions. A fitting portion may be provided in the lower connecting body 36 and the rear axle housing 34. The reinforcing frame 37 is made of a round pipe (round steel pipe). This reinforcing frame 37 will be described below. For example, as shown in Fig. 12, the transmission case 27 is disposed below the upper surface of the intermediate frame 11, and the lower link body 36 is fixed to the lower end portion of the transmission case 27. As will be further described, the gear trains are arranged at different heights in the gearbox 27, so that the upper and lower dimensions of the gearbox 27 are quite different. 099138619 23 201127274 The lower connecting body 36 is fixed to the lower end portion of the transmission case 27. Therefore, the lower connecting body 36 is disposed substantially below the front side frame 9 and the intermediate frame 11, and the rear wheel drive shaft 41 is viewed from the side. The rear axle box 34 is connected to a position substantially parallel to the lower connecting body 36. Further, the reinforcing frame 37 is in a forwardly inclined posture in a side view as the height is lowered as it goes downward, and the upper and lower ends are fixed to the intermediate frame 11 by welding. Further, as shown in Fig. 16(A), a support material 38 having a downwardly open groove shape as viewed from the front side of the left and right lower piece 38a is fixed to the bottom portion 37a of the reinforcing frame 37, and the lower connecting body is formed on the other hand. The support bracket 77 is fitted to cover the support material 38, and the support material 38 and the support bracket 77 are joined by the left and right horizontally long pins 78. Further, instead of the pin 78, a screw or a nut may be used, and the reinforcing frame 37 may be fixed to the lower connecting body 36 by welding. A pair of left and right rubber seats 79 are provided on the support material 38, and the lower surface of the fuel tank 21 is supported by the rubber seat 79. As shown in Fig. 16(A), a downward protruding portion 21a is provided in the vicinity of the support portion of the rubber seat 79 in the lower surface of the fuel tank 21, and the fuel outlet 80 is provided in the downward protruding portion 21a, and the fuel is provided. The outlet 80 is delivered to the engine 26 via a filter (not shown). Since the engine 26 forcibly delivers fuel via a pump via diesel, it is possible to leave the outlet 70 of the fuel tank 21 below the engine 26. As shown in Fig. 12(B), the fuel tank 21 is provided with a pair of front and rear flanges 82, and the front flange 81 is fixed to the box bracket fixed to the intermediate frame 11 099138619 24 201127274 by screws. 83. On the other hand, the rear flange of the fuel tank 21 is fastened to the bracket plate 18a provided in the hanger type bracket 18 shown in Figs. 4 and 5 by screws. The fuel filler port 84 of the fuel tank 21 is located below the seat 6, and if the seat 6 is tilted forward, the fuel filler port 54 can be exposed. For example, as can be clearly understood from Fig. 12(B), a step portion 85 which is open to the left side and the front side is formed on the upper surface of the fuel tank 21. For example, the hydraulic unit 86 may be disposed at a portion of the step portion. The hydraulic unit such as the hydraulic cylinder 39 can be controlled by the hydraulic unit %. Of course, the portion of the step portion 85 may be other members, and the step portion 85 may not be provided. (6) Linkage Mechanism and Hydraulic Cylinder Next, the link mechanism 3 and the hydraulic cylinder 39 will be described. As shown in FIG. 18 and FIG. 18, the link mechanism 3 includes an upper link 88 and a lower link 89, and is disposed at the rear end of the two links 88 and 89 by the ith pin 9G and the second 191. And there are even money 92. Under connector 92

連』::二出/置有未圖示之主銷(Η·11) ’並經由該主銷 連結有插秧部2。因茈，杯私A 僅某種程紅角度。秧。卩2可㈣於行駛機體U走轉 亡連桿88係由各個管或槽鋼 形態，於其前端固著上^ 4上為直線狀之 於固著在左右後支柱14Γ上支tr㈣承筒93欲入 以將其前端作為中心而上軸。因此’上連桿以可 上支^係筒型，且“有第結•支柱14。 099338619 25 201127274 下連桿89係形成為前部為1條且向後分叉之大致γ形， 於前端固著下軸承筒96,並將該軸承筒96嵌入於固著在後 支柱14之下支軸97，因此，下連桿89亦可以將其前端作 為中心而上下轉動之方式連結於後支柱14。下支轴97亦係 筒型’且嵌入有第4銷98。 於下連桿89，以將中間連桿99之後端部作為中心而轉動 之方式藉由第5銷100來連結前後橫長之中間連桿99。中 間連桿99係形成為向下開口槽形之形態，且於其前端部插 通有左右橫長且中空之第6銷101。另一方面，於下連桿89 之前端部向上突出設置有左右一對臂102,且經由左右臂 102而自下方支持有第6銷1〇1。 另一方面，油壓缸39包含筒體39a及活塞桿3%，筒體 39a之基端猎由第7銷1 〇4而連結於固定在下部連結體36 之托架40,另一方面，於活塞桿3卯之前端，如圖17所示 般固著有板狀之帶圓孔卡鉤105，卡鉤105與中間連桿99 係藉由上述第6銷101(參照圖17、18)而連結。 因此’若油壓缸39伸展，則連桿裝置3將向下轉動而使 插秧部2下降’若油壓缸39收縮’則連桿裳置3將向上轉 動而使插秧部2上升。於油壓缸3 9中之筒部3 9a前端，設 置著用以緩和衝擊之緩衝用蓄壓器106。再者，亦可不使用 中間連桿99而是將油壓缸39直接連結於臂1〇2。 (7)關於行駛車體之後半部之總結 099138619 26 201127274 如上所述，於本實施形態中，變速箱27及後車軸箱34 係兼用作行駛機體1之構造材料，故由此即可使行駛機體1 之構造簡化而有利於成本壓縮或輕量化（由於變速箱27或 後車軸箱34就其功能而言屬堅固之構造，故將可充分發揮 強度構件之功能）。而且，由於係藉由補強架37而連結下部 連結體36與中間架11，故由變速箱27等構成之下部構造 體與由側架9、10等構成之底盤彼此可相互補強，其結果， 整體上可成為極其堅固之構造。 插秧部2之負重將作為拉伸力而作用於油壓缸39，且藉 由該拉伸力，彎曲力會作用於下部連結體36。然而，由於 補強架37係成為自上方支撐於下部連結體36之狀態，故可 顯著地抑制下部連結體36、由變速箱27等構成之下部構造 體之撓曲變形，其結果為可確保高耐久性。 燃料箱21係形成為由補強架37所包圍之狀態，因此可無 關補強架37之存在而儘可能地降低燃料箱21之高度。又， 於本實施形態中，用以連結補強架37之支承材料38可兼用 作為燃料箱21之支持構件，故具有由此即可使構造簡化之 優點。又，如例如圖12(A)所示，於燃料箱21之下表面形 成有用以容許油壓缸39之移動之凹部107，因此，可不破 壞油壓缸39之功能而儘可能地降低燃料箱21。該點亦為本 實施形態之優點之一。 於本實施形態中，係將侧架分為前部側架9及後部側架 099138619 27 201127274 10 ’且將前後之側架9、10藉由中間架U而連結，藉此可 簡單地改變前部側架9及後部側架10之大小（粗細度）或位 置及姿勢。該點係本實施形態之優點之一。 又，於本實施形態中，藉由固定於後車軸箱34之橫樑構 件35而支持有後支柱14。藉由如上所述使用橫樑構件35， 可減輕作用於後車轴箱34之負擔而提高耐久性，同時左右 後支柱14之間隔亦可不受向後伸出部34a之間隔限制而可 予以自由地設定。 (8)更進一步之補強構造 無論是農場還是路上均存在凹凸，因此，4個車輪4、5 之支持狀態（接地阻力）會變得不平衡彷彿以例如1個車輪懸 空之狀態而行駛，因此，有時行駛車體1之自身重量會作為 圍繞前後橫長之軸心扭轉之外力而作用於行驶車體1。由 此’若如實施形態般設置補強架37 ’則由底盤、變速箱27、 高 下部連結體36、後車軸箱34、及後支柱27之整體所構成 構造體之剛性將明顯k南’故對於扭轉之抵抗力亦可明顯 而且，如圖19所示，於本實施形態甲，係更進〜氺 對於扭轉之剛性來謀求補強功能。即，將補強架3 ’、 <左右 兩側部藉由前後橫長之補強撐桿113加以連結，並由補为 37、左右之補強撐桿113、及後車軸箱34構成平面觀矜 呈大致四方形之框架，藉此提高對於扭轉之阻力（當然 099138619 28 201127274 於彎曲之強度亦提高)。 ★ 113錢用㈣鋼管’且於其前端部焊接有向外 二二之前部辅助托架114。另—方面，於補強架37之 /則部焊接有平峨察下呈大致L狀支持托架115, 輔助㈣114與支持托架115藉由複數根螺桿116及 螺幅117而加以緊固。 又’於補強撐桿113之後端焊接有側面觀察下呈扇形之後 4輔助托架118 ’且將後部獅托架118藉由螺桿⑽而固 定於後車軸箱34前部之側面。於後車轴箱34之前部側面設 置有螺入有螺桿119之支承座12G。支承座m係於前後各 形成有1對’ Μ要更高強度m只要·助托架118 如以-點鏈線所表示般向後展開而緊固於4個支承座⑽ 即可。 (9)其他實施形態 圖20所示之實施形態中，於引擎％之支持機構中，係將 框架補強體56設為板金製，並於該框架補強體㈣設有上 下開口之複數個貫通孔5 6 a。由於在本實施形態中框架補強 體56之平面面積較大’故可提高對於扭轉之剛性，同時亦 可提高引¥ 26之防護功能。又，由於貫通孔⑽之存在， 可實現輕量化並且亦可確保通風功能。 又，於圖20之實施形態令，於前側之支撐架^之近前方 配置有平面觀察下呈峨開α u型之保險桿(bumper)122。 099138619 29 201127274 保險桿122係以越向前走則高度越高之方式於側面觀寧下 呈現傾斜，其左右後端係焊接於前側之支撐架55，叮、 桿122之别端係經由前托架123而連結於前架12。 ' 習知之保險桿僅不過為橫長之形態，且僅不過固定於么 架。亦即’ 知之保險桿僅不過具有行駛車體前端之防護」 能，而並未兼具其他功能。 與此相對，於本實施形態中，保險桿123、前架12、 ^ 部之支㈣55係相連結，故底盤前部之堅固性將可明= 高。即，保險桿123係具有底盤(行駛車體)之補強功能‘、。、夂 又，由於保險桿122係固定於前側之支撐架Μ，:亦具 有引擎26之保護構件作用’因此，可在構成為心丨擎、％ 配置在下沉至前部側架9下方之狀態下，更進—步提高引擎 26之保護功能（由於通風性並未受阻，故引擎％之冷卻功 能亦高）。於本實施形態中，如圖2〇(A)所示，於變速7箱η 之上部後面安裝有油壓單元86。 圖21係表不整體骨架之另一例。於本實施形態中，在輔 助架23之外侧配置有内外各2條之外架124，且藉由前後 複數個外托架125來支持外架124。而且，藉由外架124支 持有辅助蓋126。升降用踏板128亦固定於外側之外架124。 又，車蓋24為其後部提高之肩部24b，但於階差部24b之 周圍配置有圍攔(女全栅)127。左右之圍才闌I〗？係固定於外 側之外架124。 099138619 201127274 外架124係以向側架9、10之左右外側大幅伸出之狀態進 行配置。因此，設置有自下部連結體36向左右外侧延伸之 左右一對支撐桿128，且藉由支撐桿128而支持位於後端之 外托架125。由此，可明顯提高載人部位之堅固性。再者， 支撐桿128係連結於固定在下部連結體36之托架。 於圖22所示之實施形態中，將引擎26配置於變速箱27 之後方。於本實施形態中，變速箱27與後車軸箱34係與習 知之實施形態同樣地藉由下部連結體36而連結，且包含前 部補強體37及後部補強體37’。後部補強體37'係固著於連 結在左右後部侧架10之橫長架130。補強體37、37’係經由 托架安裝於下部連結體36，但亦可藉由焊接或螺固等而直 接安裝。 於前後之補強體37、37’安裝有底板131，引擎26係經由 防振橡膠（未圖示）而由底板131所支持。前後之補強體37、 37'係於正面觀察下呈U形之形態。於本實施形態中，燃料 箱可配置於變速箱27之近前方。 亦可將前後之補強體37、37'形成為包含縱長部之下水平 部之正面觀察下呈現之大致L形，且將下水平部之前端固 著於下部連結體36之侧面。又，亦可將形成為正面觀察下 呈現U型之補強體37、37'之下水平部固著於下部連結體36 之下表面。前部補強體37亦可固著於中間架11中後部側架 10之外側部分。 099138619 31 201127274 (10)其他 本么明除以上之實施形態以外亦可以各種形態而予以具 體化例如’適用對象並不受限於乘用型插秧機，亦可適用 於秋田移植機、割草機等各種農作機。亦可將實施形態之插 秧。P #換成其他作業裝置或搬運台車。行駛機體並不受限於 以車輪行駛之方式’亦可採用以履帶(erawler)行駛之方式。 側木無需分為前後不同構件，亦可整體連成一根。連結於 中間架及下部連結體之補強體之形態亦不受限，而可採用各 種形態。下部連結體亦可採用設為®管製或設為複數條方式 等之多種變形。於在下部連結體連結有油壓缸之情況下，亦 可將變速箱與中間架或側架藉由補強體而加以連結，且於此 情況亦可發揮與本發明相同之效果。 (產業上之可利用性） 本發明以係具體之插秧機等乘用型農作機而發揮有用 性。因此，可利用於產業上。 【圖式簡單說明】 圖1係表示實施形態之圖，且係於已卸除車蓋之狀態下之 插秧機之整體側視圖。 圖2(A)係插秧機整體之俯視圖’（B)係自橫向觀察之行駛 車體之立體圖。 圖3(A)及(B)均係表示行駛車體骨架之立體圖。 圖4係行駛車體之局部分離立體圖。 099138619 32 201127274 圖5(A)係已分離引擎之行駛車體之立體圖，（B)係主要部 分之概略侧視圖。 圖6係表示引擎之支持構造之分離立體圖。 圖7係表示引擎之支持構造，（A)為引擎及支持構件之分 離立體圖，（B)為支持單元之分離立體圖，（C)為緩衝單元之 立體圖。 圖8(A)係行駛車體前部之側視圖，（B)係行駛車體之局部 正視圖。 圖9(A)係行駛車體前部之局部俯視圖。 圖10係於已省略一部分構件之狀態下之變形例之俯視 圖。 圖11(A)係主要部分之分離立體圖，（B)係表示下部連結體 與變速箱之連結狀態之立體圖，（C)係表示下部連結體與後 車轴箱之連結狀態之立體圖。 圖12(A)係主要部分之分離側視圖，（B)係表示燃料箱之安 裝構造而自下方觀察到之立體圖。 圖13係於已將燃料箱向側面偏離之狀態之俯視圖。 圖14係主要部分之仰視圖。 圖15係主要部分之局部側視圖。 圖16 (A)係於將燃料箱翻轉之狀態下之主要部分之分離立 體圖，（B)係自斜後方觀察主要部分之圖。 圖17係表示連桿裝置之連結構造之局部斷裂側視圖。 099138619 33 201127274 圖18係表示連桿裝置之連結構造之分離立體圖。 圖19係表示變形例之圖，（A)為分離立體圖，（B)為分離 側視圖，（C)為自（B)之C-C所觀察到之剖視圖。 圖20係表示其他實施形態之圖，（A)為側視圖，（B)為立 體圖。 圖21係進一步表示.其他實施形態之分離立體圖。 圖22係進一步表示其他實施形態之概略側視圖。 【主要元件符號說明】 1 行駛車體 2 作為作業裝置一例之插秧部 3 連桿裝置 4 前輪 5 後輪 6 座席 7 操縱方向盤 8 預備苗台 9 前部側架 10 後部側架 11 中間架 12 前架 13 後架 14 後支柱 099138619 34 201127274 15 向外枝架 17 後部橫長撐桿 18 吊架型托架 18a 托架板 19 門型架 20 座部支持單元 21 燃料箱 21a 向下突出部 23 輔助架 24 車蓋 24a 操縱踏板 24b 階差部 25 方向盤柱 26 引擎 27 變速箱 28 HST 29 傳送帶 30 張力滑輪 31 轉動式臂 32 動力轉向單元 33 前車軸裝置 34 後車軸箱 099138619 35 201127274 34a 向後伸出部 35 橫標構件 36 下部連結體 36a 凸型嵌合部 37 補強架 37' 後部補強體 37a 補強架37之底部 38 作為後側構件支持部 38a 向下片 39 油壓缸 39a 筒體 39b 活塞桿 40 托架 41 後輪驅動軸 42 作業動力軸 43 株距調節裝置 44 機械本體 45 散熱器 48 輸出軸 49 飛輪 50 輸出滑輪 51 消音器 例之支撐部 099138619 36 201127274 52 53 54 55 56 56a 57 59 60 60a 61、 62 63 63a 64 65 67、 68 69 70 71、 撐桿 罩蓋 圓板 作為前侧構件支持部一例之構成引擎支撐部之 支撐架 構成引擎支撐部之框架補強體 貫通孔 側托架 下托架 上托架 支持片 66、74'、75'、116、119 螺桿 吸振單元 上板 、64a 侧板 下板 緩衝材 117 螺帽 圓孔 槽孔 後托架 78 銷 099138619 37 201127274 72 冷卻風扇 74 前支持板 75 後支持板 77 、 115 支持托架 79 橡膠座 80 出口 81、82 凸緣 83 箱托架 84 加油口 85 階差部 86 油壓單元 88 上連桿 89 下連桿 90 第1銷 91 第2銷 92 連接器 93 上軸承筒 94 上支轴 95 第3銷 96 下軸承筒 97 下支轴 98 第4銷 099138619 38 201127274Even if the main pin (Η·11) ’ (not shown) is placed, the insertion unit 2 is connected via the main pin. Because of this, the cup private A only has a certain degree of red angle. seedling.卩2 can be (4) in the traveling body U go to the death link 88 is from the form of each tube or channel steel, fixed on the front end of the ^ 4 on the line is fixed to the left and right rear pillar 14 Γ on the branch tr (four) cylinder 93 Want to enter the front end with the front end as the center. Therefore, the upper link can be supported by the tubular type and has the first knot and the support 14. The lower link 89 is formed into a substantially gamma shape with a front portion and a rearward bifurcation, which is fixed at the front end. The lower bearing cylinder 96 is placed, and the bearing cylinder 96 is fitted to the support shaft 97 fixed to the lower support post 14, so that the lower link 89 can be coupled to the rear pillar 14 by rotating the front end thereof as a center. The lower support shaft 97 is also in the tubular shape and has the fourth pin 98 embedded therein. The lower link 89 is coupled to the front and rear transverse lengths by the fifth pin 100 so as to rotate the rear end portion of the intermediate link 99 as a center. The intermediate link 99. The intermediate link 99 is formed in a downwardly open groove shape, and has a sixth pin 101 that is horizontally long and hollow at the front end portion thereof. On the other hand, at the front end of the lower link 89 The pair of left and right arms 102 are protruded upward, and the sixth pin 1〇1 is supported from below via the left and right arms 102. On the other hand, the hydraulic cylinder 39 includes the cylinder 39a and the piston rod 3%, and the cylinder 39a The base end is connected to the bracket 40 fixed to the lower link 36 by the seventh pin 1 〇 4, and on the other hand, before the piston rod 3 At the end, as shown in Fig. 17, a plate-shaped round hole hook 105 is fixed, and the hook 105 and the intermediate link 99 are connected by the sixth pin 101 (see Figs. 17 and 18). When the hydraulic cylinder 39 is extended, the link device 3 will rotate downward to lower the insertion portion 2. If the hydraulic cylinder 39 is contracted, the link skirt 3 will rotate upward to raise the insertion portion 2. The hydraulic cylinder 3 is raised. The buffer accumulator 106 for mitigating the impact is provided at the front end of the cylindrical portion 39a of the ninth portion. Alternatively, the hydraulic cylinder 39 may be directly coupled to the arm 1〇2 without using the intermediate link 99. (7 Regarding the summary of the rear half of the traveling body 099138619 26 201127274 As described above, in the present embodiment, the transmission 27 and the rear axle box 34 are also used as the structural material of the traveling body 1, so that the traveling body 1 can be made thereby The structure is simplified to facilitate cost compression or weight reduction (since the gearbox 27 or the rear axle box 34 is structurally strong in terms of its function, the function of the strength member can be fully utilized). Moreover, since the reinforcement frame is used 37, the lower connecting body 36 and the intermediate frame 11 are connected, so that the gearbox 27 and the like constitute a lower structure. The body and the chassis constituted by the side frames 9, 10 and the like are mutually complementary, and as a result, the structure can be extremely strong as a whole. The load of the insertion portion 2 acts on the hydraulic cylinder 39 as a tensile force, and The tensile force and the bending force act on the lower connecting body 36. However, since the reinforcing frame 37 is supported by the lower connecting body 36 from above, the lower connecting body 36 can be remarkably suppressed, and the gearbox 27 can be configured. The deflection deformation of the lower structure results in high durability. The fuel tank 21 is formed in a state surrounded by the reinforcing frame 37, so that the fuel tank 21 can be lowered as much as possible irrespective of the presence of the reinforcing frame 37. height. Further, in the present embodiment, the support member 38 for connecting the reinforcing frame 37 can also serve as a supporting member for the fuel tank 21. Therefore, the structure can be simplified. Further, as shown, for example, in Fig. 12(A), a concave portion 107 for allowing the movement of the hydraulic cylinder 39 is formed on the lower surface of the fuel tank 21, so that the fuel tank can be lowered as much as possible without breaking the function of the hydraulic cylinder 39. twenty one. This point is also one of the advantages of this embodiment. In the present embodiment, the side frame is divided into the front side frame 9 and the rear side frame 099138619 27 201127274 10 ' and the front and rear side frames 9 and 10 are connected by the intermediate frame U, whereby the front can be easily changed. The size (thickness) or position and posture of the side frame 9 and the rear side frame 10. This point is one of the advantages of this embodiment. Further, in the present embodiment, the rear pillar 14 is supported by the beam member 35 fixed to the rear axle box 34. By using the beam member 35 as described above, the load acting on the rear axle box 34 can be reduced to improve the durability, and the interval between the right and left rear pillars 14 can be freely set without being restricted by the interval of the rearward projecting portion 34a. . (8) Further reinforcement structure, there are irregularities on the farm or on the road. Therefore, the support state (grounding resistance) of the four wheels 4 and 5 becomes unbalanced as if, for example, one wheel is suspended. In some cases, the weight of the vehicle body 1 is applied to the traveling vehicle body 1 as a force that is twisted around the axis of the front and rear. Therefore, if the reinforcing frame 37' is provided as in the embodiment, the rigidity of the structure formed by the chassis, the transmission 27, the high lower connecting body 36, the rear axle box 34, and the rear pillar 27 will be significantly k- The resistance to twisting is also remarkable. As shown in Fig. 19, in the present embodiment A, the tightening function is further improved by the rigidity of the twist. That is, the reinforcing frame 3', <left and right sides are connected by the reinforcing strut 113 of the front and rear transverse lengths, and the reinforcing 37, the left and right reinforcing stays 113, and the rear axle box 34 constitute a plan view. A generally square frame, thereby increasing the resistance to torsion (of course 099138619 28 201127274 also increases the strength of the bend). ★ 113 (4) steel pipe ', and the front and rear auxiliary brackets 114 are welded to the front end portion. On the other hand, in the portion of the reinforcing frame 37, a substantially L-shaped support bracket 115 is welded to the upper portion, and the auxiliary (four) 114 and the support bracket 115 are fastened by a plurality of screws 116 and a screw 117. Further, the rear end of the reinforcing stay 113 is welded to the auxiliary bracket 118' after being viewed from the side, and the rear lion bracket 118 is fixed to the side of the front portion of the rear axle box 34 by the screw (10). A support seat 12G to which a screw 119 is screwed is provided on the front side of the rear axle housing 34. The support base m is formed in a pair of front and rear sides. The strength is increased as long as the support bracket 118 is extended rearward as indicated by the dotted line and fastened to the four support seats (10). (9) Other Embodiments In the embodiment shown in Fig. 20, in the support mechanism of the engine%, the frame reinforcing body 56 is made of sheet metal, and the frame reinforcing body (4) is provided with a plurality of through holes that are vertically opened. 5 6 a. Since the frame reinforcing area of the frame reinforcing body 56 is large in the present embodiment, the rigidity against twisting can be improved, and the protective function of the lead 26 can be improved. Moreover, due to the presence of the through hole (10), weight reduction can be achieved and the ventilation function can be ensured. Further, in the embodiment of Fig. 20, a bumper 122 having an α u-shaped opening is disposed in the vicinity of the support frame on the front side. 099138619 29 201127274 The bumper 122 is inclined in a side view when the height is higher as it goes forward, and the left and right rear ends are welded to the support frame 55 on the front side, and the other ends of the rods 122 are connected via the front support. The frame 123 is coupled to the front frame 12. The conventional bumper is just a horizontally long form and is only fixed to the frame. That is to say, the 'information bumper only has the protection of the front end of the vehicle body." It does not have other functions. On the other hand, in the present embodiment, the bumper 123, the front frame 12, and the branch (4) of the ^ portion are connected to each other, so that the front portion of the chassis can be made sturdy = high. That is, the bumper 123 has a reinforcing function of the chassis (traveling vehicle body). Further, since the bumper 122 is fixed to the support frame on the front side, it also has the function of the protective member of the engine 26. Therefore, it can be configured as a heart pump, and the state is disposed below the front side frame 9. Next, step by step to improve the protection function of the engine 26 (the engine's cooling function is also high because the ventilation is not blocked). In the present embodiment, as shown in Fig. 2A(A), the hydraulic unit 86 is attached to the rear of the upper portion of the shift 7 box η. Fig. 21 is another example of the overall skeleton. In the present embodiment, two outer and outer frames 124 are disposed on the outer side of the auxiliary frame 23, and the outer frame 124 is supported by a plurality of outer brackets 125. Moreover, the auxiliary cover 126 is held by the outer frame 124. The lifting pedal 128 is also fixed to the outer outer frame 124. Further, the hood 24 is a shoulder portion 24b which is raised at the rear portion, but a fence (female full gate) 127 is disposed around the step portion 24b. The left and right sides are only 阑I〗? It is fixed to the outer frame 124. 099138619 201127274 The outer frame 124 is disposed in a state of being largely extended to the left and right outer sides of the side frames 9, 10. Therefore, a pair of right and left support bars 128 extending from the lower link body 36 to the left and right outer sides are provided, and the brackets 125 located at the rear end are supported by the support bars 128. Thereby, the robustness of the manned portion can be significantly improved. Further, the support rod 128 is coupled to a bracket fixed to the lower connecting body 36. In the embodiment shown in Fig. 22, the engine 26 is disposed behind the transmission 27. In the present embodiment, the transmission case 27 and the rear axle housing 34 are connected by the lower connecting body 36 in the same manner as the conventional embodiment, and include the front reinforcing body 37 and the rear reinforcing body 37'. The rear reinforcing body 37' is fixed to the horizontal frame 130 attached to the left and right rear side frames 10. The reinforcing bodies 37, 37' are attached to the lower connecting body 36 via brackets, but may be directly attached by welding or screwing. The bottom plate 131 is attached to the front and rear reinforcing bodies 37, 37', and the engine 26 is supported by the bottom plate 131 via a vibration-proof rubber (not shown). The reinforcing bodies 37 and 37' before and after are in the form of a U shape under the front view. In the present embodiment, the fuel tank can be disposed in the immediate vicinity of the transmission case 27. The front and rear reinforcing bodies 37, 37' may be formed to have a substantially L shape as viewed from the front of the horizontal portion below the longitudinal portion, and the front end of the lower horizontal portion may be fixed to the side of the lower joined body 36. Further, the horizontal portion below the reinforcing members 37, 37' which are formed in a U-shape under the front view may be fixed to the lower surface of the lower connecting body 36. The front reinforcing body 37 may also be fixed to the outer side portion of the rear side frame 10 in the intermediate frame 11. 099138619 31 201127274 (10) Others In addition to the above embodiments, various embodiments can be embodied. For example, the application target is not limited to the passenger-type rice transplanter, and can also be applied to the Akita transplanter or lawn mower. And other farming machines. The implementation can also be inserted. P #Change to another working device or transport trolley. The traveling body is not limited to the way of driving on wheels. It is also possible to use an erawler. The side wood does not need to be divided into different components before and after, or it can be integrated into one. The form of the reinforcing body connected to the intermediate frame and the lower connecting body is not limited, and various forms can be employed. The lower link body may be modified in various ways such as a control or a plural. In the case where the hydraulic cylinder is connected to the lower connecting body, the transmission case and the intermediate frame or the side frame may be connected by the reinforcing body, and in this case, the same effects as those of the present invention can be exerted. (Industrial Applicability) The present invention is useful in a passenger-type agricultural machine such as a rice transplanter. Therefore, it can be utilized in the industry. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an embodiment of the present invention, and is an overall side view of the rice transplanter in a state in which the hood has been removed. Fig. 2(A) is a plan view of the entire rice transplanter. (B) is a perspective view of the vehicle body viewed from the lateral direction. 3(A) and (B) are perspective views showing the skeleton of the traveling vehicle body. Figure 4 is a partially separated perspective view of the traveling vehicle body. 099138619 32 201127274 Fig. 5(A) is a perspective view of the vehicle body of the separated engine, and (B) is a schematic side view of the main part. Fig. 6 is a perspective view showing the separation of the support structure of the engine. Fig. 7 is a perspective view showing the support structure of the engine, (A) is a separate perspective view of the engine and the support member, (B) is a separate perspective view of the support unit, and (C) is a perspective view of the buffer unit. Fig. 8(A) is a side view of the front portion of the traveling vehicle body, and (B) is a partial front view of the traveling vehicle body. Fig. 9(A) is a partial plan view of the front portion of the traveling vehicle body. Fig. 10 is a plan view showing a modification of the state in which a part of the members have been omitted. Fig. 11(A) is a perspective view showing a main part of the separation, (B) is a perspective view showing a state in which the lower connecting body and the transmission are connected, and (C) is a perspective view showing a state in which the lower connecting body and the rear axle box are connected. Fig. 12(A) is a perspective view showing a main portion, and Fig. 12(B) is a perspective view showing the mounting structure of the fuel tank as viewed from below. Fig. 13 is a plan view showing a state in which the fuel tank has been laterally displaced. Figure 14 is a bottom plan view of the main part. Figure 15 is a partial side elevational view of the main portion. Fig. 16 (A) is a perspective view of a main portion of the state in which the fuel tank is turned over, and (B) is a view of a main portion viewed obliquely from the rear. Fig. 17 is a partially broken side view showing the connection structure of the link device. 099138619 33 201127274 FIG. 18 is an exploded perspective view showing the connection structure of the link device. Fig. 19 is a view showing a modification, (A) is a separation perspective view, (B) is a separation side view, and (C) is a cross-sectional view as seen from C-C of (B). Fig. 20 is a view showing another embodiment, wherein (A) is a side view and (B) is a perspective view. Fig. 21 is a perspective view showing the separation of another embodiment. Fig. 22 is a schematic side view showing another embodiment. [Description of main component symbols] 1 Driving vehicle body 2 As a working device, the insertion part 3 Linking device 4 Front wheel 5 Rear wheel 6 Seat 7 Steering wheel 8 Prep seedling 9 Front side frame 10 Rear side frame 11 Middle frame 12 Front Frame 13 Rear frame 14 Rear pillar 099138619 34 201127274 15 Outer branch 17 Rear horizontal stay 18 Hanger bracket 18a Bracket plate 19 Gantry 20 Seat support unit 21 Fuel tank 21a Downward projection 23 Assistance Rack 24 Cover 24a Actuating pedal 24b Step section 25 Steering column 26 Engine 27 Gearbox 28 HST 29 Conveyor belt 30 Tension pulley 31 Rotary arm 32 Power steering unit 33 Front axle unit 34 Rear axle box 099138619 35 201127274 34a Rearward extension 35 horizontal member 36 lower joint 36a convex fitting portion 37 reinforcing bracket 37' rear reinforcing body 37a bottom portion 38 of reinforcing frame 37 as rear side member supporting portion 38a downward piece 39 hydraulic cylinder 39a cylinder 39b piston rod 40 bracket Frame 41 Rear wheel drive shaft 42 Working power shaft 43 Plant spacing adjustment device 44 Mechanical body 45 Radiator 48 Output shaft 49 Fly 50 Output pulley 51 Muffler example support section 099138619 36 201127274 52 53 54 55 56 56a 57 59 60 60a 61, 62 63 63a 64 65 67, 68 69 70 71, strut cover disc as an example of the front side member support The support frame constituting the engine support portion constitutes the frame support portion of the engine support portion, the through hole side of the bracket, the lower bracket, the bracket support plate 66, 74', 75', 116, 119, the screw absorbing unit upper plate, the 64a side plate Plate cushioning material 117 nut round hole slot rear bracket 78 pin 099138619 37 201127274 72 cooling fan 74 front support plate 75 rear support plate 77, 115 support bracket 79 rubber seat 80 outlet 81, 82 flange 83 box bracket 84 Fuel port 85 step portion 86 oil pressure unit 88 upper link 89 lower link 90 first pin 91 second pin 92 connector 93 upper bearing cylinder 94 upper support shaft 95 third pin 96 lower bearing cylinder 97 lower support shaft 98 4th pin 099138619 38 201127274

99 100 101 102 104 105 106 107 113 114 118 120 122 123 124 125 126 127 128 130 131 C 中間連桿 第5銷 第6銷 臂 第7銷 卡鉤 緩衝用蓄壓器 凹部 補強撐桿 前部輔助托架 後部辅助托架 支承座 保險桿 前托架 外架 外托架 輔助蓋 圍欄 升降用踏板（支撐桿) 橫長架 底板 方向 099138619 3999 100 101 102 104 105 106 107 113 114 118 120 122 123 124 125 126 127 128 130 131 C Intermediate link 5th pin 6th pin arm 7th pin hook buffer accumulator recessed reinforcement strut front auxiliary support Rear auxiliary bracket support seat bumper front bracket outer frame outer bracket auxiliary cover fence lifting pedal (support rod) horizontal long frame bottom direction 099138619 39

Claims (1)

201127274 七、申請專利範圍： 1.-種乘用型農作機，構成為：包含供人乘坐而操 駛車虹及㈣於該行駛車體之引擎，上述行駛車體包含 於操縱席下方之錢及行駛變速箱，上述絲由框= 成I自上述弓1擎將動力傳遞至上述行駛變速箱之内部· 述底现及變速箱係以變速箱位於底盤之下方 進杆西？菩，认L、丄 ^ ^ ^ ;述變速箱之前方或後方、或者前後 位設置有位於較上述變竦芦夕μ主工二宙你人]万之# 件支持部。k速相之上表面而更偏向下方處之構 2·如申明專利範圍第1項之乘用型農作機，其中， 於上述底盤巾之上述變速箱前方位 之 引擎支撐部以糾擎切部之下端位於較上擎 上表面而更偏向下方處之狀想向下突出段置而作2相之 述變速箱前方之前側構件支持部，且上述引耗上 面下沉至上述底盤下方之狀態而由上述引擎支撐部所=表 3.如申請專利範圍第2項之乘用型農作機，其中，、。 ^述底盤係形成為將向前後方向延伸之左右側架藉由橫 上 長架而加以連結之構造，^於上述左右之側架前部設置有 述引擎支撐部。 4.如申請專利範圍第3項之乘用型農作機，其中， 上述引擎支撐部包含形成有正面觀察下呈向上開口之U 字狀形態之1條或複數條支撐架，且於該支撐架之底部經由 099138619 40 201127274 緩衝體而安裝上述引擎。 5.如申請專利範圍第4項之乘用型農作機，其中， 述支撐木係則後亚排地配置複數個，且該等複數個支撐 架係藉由向該切訂方突出之1個或複數個框架補強體 而予以連結。 6·如申請專利範圍第1項之乘用型農作機，其中， 於上述變速箱連結有支持前輪之前車轴裝置，另一方面， =述變速箱之後方配Μ可旋轉自如地支持後輪之後車 轴箱’上述變速箱與後車㈣係料位於較上述變速箱之I 表面而更偏向下方處之下部連結體而予以連結，且於上述下 部連結體設置有位於變速箱後方之後㈣件支持部。 7. 如申請專利範圍第6項之乘用型農作機，其中， 上述底盤包含有：向前後方向延伸之左右側架、將上述左 右侧架於其前後中途部h連結之左右橫長中間架、及將上 述左右側架於其後端料以連結之左右橫長後架，上述後架 係透過後支柱而由後車軸箱所支持， 而且’上述中間架或左右側架與下部連結體藉由補強體加 以連結。 8. 如申請專利範圍第7項之乘用型農作機，其中， 上述補強難於正峨察下呈向上開口之U字狀，且隨 越向後走關低秘側錢察下呈前傾，並且料設置於上 述補強體底部之後側構件支持部而細料箱。 099138619 41 201127274 9. 如申請專利範圍第7項之乘用型農作機，其中， 上述補強體為鋼管製且形成為框架構造，並且該補強體形 成為於正面觀察下呈大致U型或大致ν型之形態。 ’ 10. 如申請專利範圍第7項之乘用型農作機，其中， - 上述側架可分為位於中間架之近前方之大致水平姿勢之 . 則側側架、及位於中間架之後方並且隨越向後走則越高而呈 傾斜之後側側架，上述後側側架在較前側側架而更偏向左右 内側處被固定於中間架，另一方面，上述補強體在上述後側 側架之前端部附近部被固定於上述中間架。 11. 如申請專利範圍第1項之乘用型農作機，其中， 作為配置於上述變速箱後方之後方構件支持部，係將用於 載置上述引擎之引擎支撐部，以該引擎支撐部之下端位於較 上述變速箱之上表面而更偏向下方處之狀態進行配置，且上 述引擎係以使其下表面下沉至上述底盤下方之狀態而由上 述引擎支撐部所支持。 099138619 42201127274 VII. Scope of application for patents: 1. - A type of multi-purpose agricultural machine consisting of: an engine for people to ride and a vehicle for driving, and (4) an engine for the body of the vehicle, the above-mentioned vehicle body is included in the money under the operating seat And driving the gearbox, the wire is transferred from the above-mentioned bow 1 to the inside of the above-mentioned running gearbox by the frame = I. The bottom and the gearbox are placed under the chassis with the gearbox in the west. Bo, recognize L, 丄 ^ ^ ^; said the front or rear of the gearbox, or the front and rear positions are located in the above-mentioned change 竦 夕 μ 主 主 主 主 主 主 主 主 ] ] ] ] ] ] ] ] 件 件 件 件. The upper surface of the k-speed phase is more inclined downwards. The lower end is located on the upper surface of the upper surface and is more downwardly oriented. The lower protruding portion is disposed as the front side member supporting portion of the two-phase front of the transmission, and the above-mentioned sag is lowered to the lower side of the chassis. The above-mentioned engine support unit = Table 3. The multi-purpose type agricultural machine of the second application of the patent application, wherein. The chassis is formed such that the left and right side frames extending in the front-rear direction are connected by a horizontally long frame, and the engine support portion is provided at the front side of the left and right side frames. 4. The passenger-type agricultural machine according to claim 3, wherein the engine support portion includes one or a plurality of support frames formed in a U-shaped form that is open upward in front view, and the support frame is The engine is installed at the bottom via a 099138619 40 201127274 buffer. 5. The passenger-type agricultural machine of claim 4, wherein the support wood system has a plurality of rear sub-rows, and the plurality of support frames are protruded by the cut-off side. Or a plurality of frame reinforcements are linked. 6. The passenger-type agricultural machine of claim 1, wherein the transmission is coupled to the axle device before the front wheel is supported, and on the other hand, the rear wheel of the transmission is rotatably supported by the rear wheel. After that, the axle box 'the gearbox and the rear vehicle (4) are connected to the lower joint body at a lower side than the surface of the gearbox I, and the lower joint body is provided after the rear of the gearbox (four) Support department. 7. The passenger type agricultural machine according to claim 6, wherein the chassis includes: left and right side frames extending in the forward and backward directions, and left and right horizontally long intermediate frames connecting the left and right side frames in the front and rear intermediate portions h And a left and right horizontally long rear frame that is connected to the left and right side frames at the rear end thereof, the rear frame is supported by the rear axle box through the rear pillar, and the 'the intermediate frame or the left and right side frames and the lower connecting body are supported by Reinforcing bodies are linked. 8. For the passenger-type agricultural machine of the seventh application patent scope, wherein the above-mentioned reinforcement is difficult to be observed, the U-shape is upwardly open, and the forward-looking is carried out with the lower side of the secret side, and The material is disposed on the bottom member support portion and the fine box at the bottom of the reinforcing body. 9. The multi-purpose type agricultural machine according to claim 7, wherein the reinforcing body is made of a steel pipe and formed into a frame structure, and the reinforcing body is formed to be substantially U-shaped or substantially V-shaped under front view. The form. 10. The passenger-type agricultural machine of claim 7, wherein - the side frame can be divided into a substantially horizontal position in the immediate vicinity of the intermediate frame. The side frame is located behind the intermediate frame and The rear side frame is inclined as it goes backwards, and the rear side frame is fixed to the intermediate frame at the front side frame and the left and right inner side. On the other hand, the reinforcing body is on the rear side frame. The vicinity of the front end portion is fixed to the above intermediate frame. 11. The passenger type agricultural machine according to claim 1, wherein the engine support portion for placing the engine is disposed as a rear side member support portion disposed on the rear side of the transmission case, and the engine support portion is The lower end is disposed in a state of being more downward than the upper surface of the transmission, and the engine is supported by the engine support portion in a state where the lower surface is sunk below the chassis. 099138619 42
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