JP2571275B2 - Work vehicle dump bed structure - Google Patents
Work vehicle dump bed structureInfo
- Publication number
- JP2571275B2 JP2571275B2 JP1071287A JP7128789A JP2571275B2 JP 2571275 B2 JP2571275 B2 JP 2571275B2 JP 1071287 A JP1071287 A JP 1071287A JP 7128789 A JP7128789 A JP 7128789A JP 2571275 B2 JP2571275 B2 JP 2571275B2
- Authority
- JP
- Japan
- Prior art keywords
- rear side
- side plate
- open position
- dump
- fixing pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Binders And Loading Units For Sheaves (AREA)
- Refuse-Collection Vehicles (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば刈取った後、結束した穀稈束を積載
回収する回収装置付刈取結束機等の作業車のダンプ荷台
構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dump truck bed structure of a working vehicle such as a harvesting bundling machine with a collecting device for stacking and collecting a bundle of grain culms, for example, after cutting.
従来における上記ダンプ荷台構造としては、他取えば
実開昭63−173028号公報に示されているように、ダンプ
荷台の後側板を回収運搬作業時には全閉状態に固定する
とともに、ダンプ作動時には固定を解除して後方に揺動
開放させる構造のものがあった。Conventionally, as described in Japanese Utility Model Application Laid-Open No. 63-173028, if the dumping bed structure is otherwise taken, the rear side plate of the dumping bed is fixed in the fully closed state during the collection and transportation work, and fixed during the dumping operation. There is a structure which releases the swing and swings open backward.
ところが上記従来構造では、積載回収を終了した後、
回収物を機外に放出させる際に、その都度、後側板の固
定を解除しなければならず、作業能率が低くなる欠点が
あるとともに、最大積載量を多くしようとすると機体前
後長が長く大型化してしまう欠点もあった。However, in the conventional structure described above, after the loading and collection is completed,
Each time the collected material is released outside the machine, the rear side plate must be released, which has the disadvantage of reducing work efficiency. There was also a drawback that it would be changed.
本発明の目的は、機体を大型化させることなく積載量
を多くし、かつ、回収物の放出時の作業負担の軽減を図
り作業能率を向上できるようにするとともに、その為の
構造の簡素化を図る点にある。An object of the present invention is to increase the loading capacity without increasing the size of the body, to reduce the work load at the time of discharging the collected material, to improve the work efficiency, and to simplify the structure for that purpose. The point is to aim at.
本発明の特徴は、ダンプ荷台に後側板を枢支し、この
後側板を、前記ダンプ荷台の底面と略面一になる全開位
置と、前記底面と略直交する全閉位置と、前記全開位置
と前記全閉位置との中間にある半開位置との夫々に亘っ
て、下部横軸芯周りで切換揺動自在に設けるとともに、
前記ダンプ荷台のダンプ作動による揺動に伴って、前記
後側板を前記半開位置から前記全開位置まで拡大揺動さ
せる作動拡大連係機構を設け、前記作動拡大連係機構
を、機体側に設けた固定ピンと、後側板の下端部に設け
たピン係入溝を備えたＵ字状のガイド部とから構成する
とともに、前記機体側の固定ピンを、後側板の半開位置
でダンプ荷台の揺動軸芯と後側板の揺動軸芯との間で後
側板の揺動軸芯寄りの箇所に位置するように設定して設
け、さらに、Ｕ字状のガイド部を、後側板の全開位置で
固定ピンに対する上片の接当が解除されて下片のみが片
当たりするようにＵ字状ガイド部の上片と下片との長さ
を異ならせて形成し、さらに、前記機体側に設けた固定
ピンを機体に対して抜差し自在に構成して、前記後側板
を全閉位置で固定可能に構成した点にあり、その作用・
効果は次の通りである。The feature of the present invention is that the rear side plate is pivotally supported on the dump carrier, and the rear plate is fully opened at a position substantially flush with the bottom surface of the dump carrier, at a fully closed position substantially perpendicular to the bottom surface, and at the full open position. And a half-open position in the middle of the fully-closed position and a switchable swing around the lower horizontal axis.
Along with the swing by the dump operation of the dump carrier, an operation expanding linkage mechanism for expanding and swinging the rear side plate from the half-open position to the fully open position is provided, and the operation expansion linkage mechanism is provided with a fixed pin provided on the body side. A U-shaped guide portion provided with a pin engagement groove provided at a lower end portion of the rear side plate, and the fixing pin on the fuselage side is disposed at a half-open position of the rear side plate with a pivot axis of the dump carrier. It is set and provided so as to be located at a position near the pivot axis of the rear plate between the pivot axis of the rear plate and a U-shaped guide portion is provided with respect to the fixing pin at the fully open position of the rear plate. The upper piece and the lower piece of the U-shaped guide portion are formed to have different lengths so that the contact of the upper piece is released and only the lower piece comes into contact with one another, and furthermore, a fixing pin provided on the side of the machine body. The rear side plate can be fixed at the fully closed position There is a point that you configured, its operation and
The effects are as follows.
つまり、積層回収作業時には、前記後側板を前記半開
位置に設定しておくことで、最大積載量を可及的に増加
させることができる。又、最大積載量まで回収した後、
機外に放出させるときは、ダンプ荷台をダンプ作動させ
ることのみによって前記作動拡大連係機構により後側板
と底面とが略面一となって円滑な放出を行える。That is, at the time of stacking and collecting work, by setting the rear side plate to the half-open position, the maximum load capacity can be increased as much as possible. Also, after collecting up to the maximum loading capacity,
When discharging to the outside of the machine, only by performing the dump operation of the dump carrier, the rear side plate and the bottom surface are substantially flush with each other by the operation expanding and linking mechanism, so that smooth discharge can be performed.
また、非作業操作時には後側板を前記全閉位置に固定
することで、後方への嵩張りを無くして、コンパクトに
格納できる。In addition, by fixing the rear side plate to the fully closed position at the time of non-working operation, bulky rearward can be eliminated and compact storage is possible.
そして、作動拡大連係機構は、ダンプ荷台の振動軸
芯、後側板の揺動軸芯、固定ピンの配置位置の設定と、
固定ピンに対するＵ字状ガイド部の上片並びに下片の接
当範囲の設定によって構成されるものであるから、例え
ば、第７図及び第８図に示すように、ダンプ荷台（Ｄ）
の後側板（９）を半開状態に設定して積載量の増大を図
るとともに、その半開状態にある後側板（９）をダンプ
荷台（Ｄ）のダンプ作動に伴ってダンプ荷台（Ｄ）の底
面（10）と略面一となる全開位置まで拡大揺動させる作
動拡大連係機構（11）を設けるものと比べても構造の簡
素化と作動の多様化を図ることができる。つまり、ダン
プシリンダ（８）の機体枢支側ブラケット（16）と後側
板（９）長孔融通を介してピン係合したブラケット（1
8）とをロッド（17）を介して連係してなる作動拡大連
係機構（11）を設けて、半開状態にある後側板（９）を
ダンプ荷台（Ｄ）のダンプ作動に伴って荷台（Ｄ）の底
面（10）と略面一となる全開位置まで拡大揺動させるよ
うに構成したものでは、これらのロッドやブラケットな
どの多くの構成部材を必要とし、作動拡大連係機構の構
造が複雑になるが、本発明ではこのようなロッド類など
の動作連係用の別部材を必要としない。The operation expansion linkage mechanism sets the vibration axis of the dump carrier, the swing axis of the rear side plate, and the arrangement position of the fixed pin,
Since the upper and lower pieces of the U-shaped guide portion are configured by setting the contact ranges of the upper and lower pieces with respect to the fixing pins, for example, as shown in FIGS. 7 and 8, the dump carrier (D)
The rear side plate (9) is set in a half-open state to increase the load capacity, and the rear side plate (9) in the half-open state is moved to the bottom surface of the dump bed (D) with the dumping operation of the dump bed (D). The structure can be simplified and the operation can be diversified as compared with the case where an operation expanding linkage mechanism (11) that expands and swings to a fully open position that is substantially flush with (10) is provided. That is, the bracket (1) which is pin-engaged with the body pivot side bracket (16) of the dump cylinder (8) and the rear side plate (9) through the slot insertion.
8) is provided via a rod (17), and an operation expanding linkage mechanism (11) is provided, and the rear side plate (9) in a half-open state is moved along with the dumping operation of the dumping platform (D). ) Expands and swings to the fully open position, which is almost flush with the bottom surface (10), requires many components such as rods and brackets, and the structure of the operation expansion linkage mechanism is complicated. However, the present invention does not require a separate member for linking motions such as rods.
しかも、本発明では、前述のようなロッド類を利用し
た連係構造で後側板の作動を拡大するのではなく、前述
のように固定ピンとＵ字状のガイド部とを相対位置関係
を設定して作動拡大連係機構を構成するので、前記半開
状態にある位置と全開位置との他に、固定ピンがＵ字状
ガイド部の外側に接する状態に姿勢切換えして、全開状
態にも後側板の作動状態を切換えることができる。Moreover, in the present invention, the relative position between the fixing pin and the U-shaped guide portion is set as described above, instead of expanding the operation of the rear side plate by the linkage structure using the rods as described above. Since the operation expanding linkage mechanism is configured, in addition to the half-open position and the full-open position, the posture of the rear plate is switched to a state in which the fixing pin is in contact with the outside of the U-shaped guide portion. The state can be switched.
従って、本発明によれば、機体を大型化させることな
く、回収部における積載回収量を増加することができ、
放出作業の回数を可及的に減少できるとともに、放出作
業時にはダンプ荷台をダンプ作動させるだけで作動拡大
連係機構による後側板の連係作動が可能となり、作業者
がダンプ作業の都度機体から降りて後側板姿勢を変更す
る必要がないので、作業能率が格段に向上することとな
った。Therefore, according to the present invention, it is possible to increase the load and collection amount in the collection unit without increasing the size of the body,
The number of discharge operations can be reduced as much as possible, and at the time of discharge operation, the dumping platform can be operated only by dumping. Since there is no need to change the side plate attitude, work efficiency has been significantly improved.
その上、後側板に対する作動拡大のための連係機構
は、構造的には、固定ピンと上片下片の長さを異ならせ
て形成したＵ字状ガイド部とを利用しただけの構造簡単
な構成であり、しかも、後側板全開状態において機体側
の固定ピンに対して後側板側のＵ字状ガイドが片当たり
する構造であるから、ダンプ時に後側板が盛土や畦に衝
突した場合、後側板は上方に逃げることができ、作動拡
大連係機構や後側板の破損を防止し得る。In addition, the linkage mechanism for expanding the operation with respect to the rear side plate has a structurally simple structure using only a fixing pin and a U-shaped guide formed by changing the length of the upper and lower pieces. In addition, since the U-shaped guide on the rear plate side comes into contact with the fixing pin on the fuselage side when the rear plate is fully opened, when the rear plate collides with the embankment or ridge at the time of dumping, the rear plate is Can escape upward, and can prevent damage to the operation expansion linkage mechanism and the rear side plate.
尚、後側板を前記全閉位置にさせるときは、前記作動
拡大連係機構の連係を解除する必要があるが、それは作
業終了時においてのみ行えばよく、頻繁に行う必要はな
く作業負担とはならないのである。When the rear side plate is brought to the fully closed position, it is necessary to release the linkage of the operation expanding linkage mechanism, but this need only be performed at the end of work, and it is not necessary to perform the work frequently and does not impose a burden on the work. It is.
以下、本発明の実施例を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第５図及び第６図に本発明に係る作業車の一例である
回収装置付刈取結束機を示している。FIGS. 5 and 6 show a harvesting and binding machine with a collecting device as an example of the work vehicle according to the present invention.
この刈取結束機は、コンバインをベースとした走行機
体の前部にコンバインと同種の刈取前処理部（Ａ）を連
結し、刈取前処理部（Ａ）の左側後方に結束装置
（Ｂ）、及び右側後方に搭乗運転部（１）を夫々配設す
るとととに、前記結束装置（Ｂ）の後方に挾持式持上げ
搬送装置（Ｃ）を備え、機体後部に上部を開放した略箱
形のダンプ荷台（Ｄ）を備えて構成してある。In this cutting and binding machine, a cutting preprocessing unit (A) of the same type as the combine is connected to the front of a combine-based traveling body, and a binding device (B) is provided on the left rear side of the cutting preprocessing unit (A). A boarding operation unit (1) is provided on the right rear side, and a substantially box-shaped dumper having an open upper portion at the rear of the fuselage is provided with a holding type lifting and conveying device (C) behind the binding device (B). It has a loading platform (D).
前記刈取前処理部（Ａ）は、植立茎稈を縦姿勢に引起
す引起し装置（２）、茎稈を中央に寄せ集めながら後方
に掻き込むパッカ（３）、茎稈の株元を切断するバリカ
ン型刈取装置（４）、刈取られた従姿勢の茎稈を徐々に
横倒れ姿勢に姿勢変更させながら後方に搬送する縦搬送
装置（５）等で構成される。そして、前記縦搬送装置
（５）により搬送された横倒れ姿勢の茎稈を前記結束装
置（Ｂ）により結束した後、前記持上げ搬送装置（Ｃ）
における突起チェーン（６）と挾持レール（７）とによ
って結束茎稈を横倒れ姿勢のまま上方後方に向けて挾持
搬送し、その上端からダンプ荷台（Ｄ）内に落下放出さ
せて積載回収するよう構成してある。The cutting pre-processing section (A) includes a raising device (2) for raising the planted stems in a vertical position, a packer (3) for scraping the stems and stems backward while gathering the stems and stems, and a stem for the stems and stems. It is composed of a clipper-type cutting device (4) for cutting, a vertical conveying device (5) for conveying the mown stalks in the slave posture rearward while gradually changing the posture to the side-down posture. Then, after the stems and stems in the sideways-down posture transported by the vertical transport device (5) are bound by the binding device (B), the lifting transport device (C)
The tie culm is conveyed upward and backward by the projection chain (6) and the clamping rail (7) in the horizontal position, and is dropped and discharged from the upper end into the dump carrier (D) for loading and collecting. It is composed.
前記ダンプ荷台（Ｄ）の底部下面中央と機体との間に
油圧シリンダ（８）を枢支連結し、この油圧シリンダ
（８）を伸縮駆動することで、ダンプ荷台（Ｄ）を、機
体上に安定載置した回収作用姿勢と後下部の横軸芯
（X1）周りで後方上方に揺動し茎稈束放出姿勢とに亘
り、ダンプ揺動自在に構成してある。The hydraulic cylinder (8) is pivotally connected between the center of the lower surface of the bottom of the dump truck (D) and the fuselage, and the hydraulic cylinder (8) is driven to expand and contract, so that the dump truck (D) is placed on the fuselage. The dumper can be freely swung over a stable mounting recovery posture and a rearward and upward swinging posture around the horizontal axis (X 1 ) of the rear lower part to release the stem stalk bundle release posture.
そして、前記ダンプ荷台（Ｄ）の後側板（９）を、後
下部の横軸芯（X2）周りで相対揺動自在にダンプ荷台
（Ｄ）に枢支するとともに、この後側板（９）を、ダン
プ荷台（Ｄ）の底面（10）と略面一になる全開位置と、
前記底面（10）と略直交する全閉位置と、前記全開位置
と前記全閉位置との中間にある半開位置との夫々に亘っ
て、前記横軸芯（X2）周りで切換揺動自在に設けてあ
る。又、前記ダンプ荷台（Ｄ）のダンプ作動による揺動
に伴って、前記後側板（９）を前記半開位置から前記全
開位置まで拡大揺動させる作動拡大連係機構（11）を設
けてある。Then, the rear plate (9) of the dump carrier (D) is pivotally supported on the dump carrier (D) so as to be relatively swingable around a horizontal axis (X 2 ) at a lower rear portion, and the rear plate (9) is also supported. A fully open position that is substantially flush with the bottom surface (10) of the dump carrier (D),
It is freely swingable around the horizontal axis (X 2 ) over a fully closed position substantially orthogonal to the bottom surface (10) and a half open position intermediate between the fully open position and the fully closed position. It is provided in. Further, there is provided an operation expanding linkage mechanism (11) for expanding and swinging the rear side plate (9) from the half-open position to the full-open position in accordance with the swing by the dump operation of the dump carrier (D).
詳述すると、第１図及び第４図に示すように、前記後
側板（９）の右側枢支軸芯下方にＵ字状のガイド部（1
2）を延設し、このガイド部（12）の溝（13）に機体側
に固着のブラケット（14）に支持された固定ピン（15）
を係入させて、ダンプ荷台（Ｄ）が載置姿勢にあると
き、後側板（９）が前記半開状態に位置規制するよう構
成し、茎稈束の最大積載量を可及的に大きくさせるよう
考慮してある。More specifically, as shown in FIGS. 1 and 4, a U-shaped guide portion (1) is provided below the right side pivot axis of the rear side plate (9).
2) is extended and the fixing pin (15) supported by the bracket (14) fixed to the fuselage side in the groove (13) of the guide part (12)
When the dump carrier (D) is in the mounting position, the rear plate (9) is configured to regulate the position in the half-open state, so that the maximum loading capacity of the stem-and-culm bundle is increased as much as possible. It is taken into consideration.
そして、ダンプ荷台（Ｄ）をダンプ作動させると前記
固定ピン（15）と前記Ｕ字状ガイド部（12）の上片（12
c）との接当が解除され、後側板（９）は、固定ピン（1
5）と前記Ｕ字状ガイド部（12）の下片（12b）のガイド
面（12a）の片当りによりダンプ方向に向かう相対回動
を規制しながら連動揺動するよう構成してある（第２図
参照）。このとき、後側板（９）の枢支軸芯（X2）が、
ダンプ荷台（Ｄ）の揺動に伴って、固定ピン（15）から
離間するよう構成して、つまり、後側板（９）の半開位
置でダンプ荷台（Ｄ）の揺動軸芯（X1）と後側板（９）
の揺動軸芯（X2）並びに固定ピン（15）の３者が一直線
上に並ぶように設定して、かつ、固定ピン（15）が後側
板（９）の揺動軸芯（X2）寄りの箇所に位置するように
設定して、後側板（９）の揺動作動角度がダンプ荷台
（Ｄ）揺動作動角度よりも大きくなるよう構成して、前
記作動拡大連係機構（11）を構成してある。When the dumping bed (D) is dumped, the fixing pin (15) and the upper piece (12) of the U-shaped guide portion (12) are moved.
c) and the rear plate (9) is fixed to the fixing pin (1).
5) and the lower surface (12b) of the lower surface (12b) of the U-shaped guide portion (12) is brought into contact with the guide surface (12a) to restrict the relative rotation toward the dumping direction so as to interlock and swing. 2). At this time, the pivot axis (X 2 ) of the rear side plate (9)
With the swing of the dump carrier (D), it is configured to be separated from the fixing pin (15), that is, at the half open position of the rear side plate (9), the swing axis (X 1 ) of the dump carrier (D). And rear plate (9)
The swing shaft center (X 2 ) and the fixed pin (15) are set so as to be aligned, and the fixed pin (15) is aligned with the swing shaft center (X 2 ) of the rear plate (9). And (3) the operation expansion linkage mechanism (11), which is set so as to be located at a position closer thereto, so that the swinging movement angle of the rear side plate (9) is larger than the swinging movement angle of the dump carrier (D). Is configured.
そして、前記作動拡大連係機構（11）の連係を解除し
た状態において、前記後側板（９）を前記全開位置に固
定並びに固定解除自在な固定手段を設けてある。つま
り、前記固定ピン（15）をブラケット（14）に対して挿
脱自在に構成するとともに、この固定ピン（15）を抜き
外した状態において、後側板（９）を前記全閉位置に手
動で位置変更させた後、再度固定ピン（15）を挿着させ
ることで後側板（９）の枢支軸芯（X2）の下方側前端縁
に接当して全閉位置に位置規制するよう構成してある
（第３図参照）。つまり、前記固定ピン（15）で前記固
定手段を構成する。When the linkage of the operation expanding linkage mechanism (11) is released, a fixing means for fixing the rear side plate (9) to the fully open position and releasing the fixation is provided. That is, the fixing pin (15) is configured to be insertable into and removable from the bracket (14), and in a state where the fixing pin (15) is removed, the rear side plate (9) is manually moved to the fully closed position. after repositioning, so as to position restriction in the fully closed position to brought into contact with the lower side front edge of the pivot shaft core (X 2) of the rear side plate (9) by which is inserted again fixed pin (15) (See FIG. 3). That is, the fixing pin (15) forms the fixing means.
尚、特許請求の範囲の項に図面との対照を便利にする
為に符号を記すが、該記入により本発明は添付図面の構
造に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.
図面は本発明に係る作業車のダンプ荷台構造の実施例を
示し、第１図ないし第３図は作動状態を示す要部の側面
図、第４図は要部の平面図、第５図は刈取結束機の全体
側面図、第６図は刈取結束機の全体平面図、第７図及び
第８図は作動拡大連係機構の比較例を示す側面図であ
る。 （９）……後側板、（10）……底面、（11）……作動拡
大連係機構、（12）……Ｕ字状ガイド部、（12b）……
下片、（12c）……上片、（15）……固定ピン、（Ｄ）
……ダンプ荷台、（X1）……ダンプ揺動軸芯、（X2）…
…後側板揺動軸芯。The drawings show an embodiment of a dump truck structure of a working vehicle according to the present invention, wherein FIGS. 1 to 3 are side views of main parts showing an operating state, FIG. 4 is a plan view of main parts, and FIG. FIG. 6 is an overall plan view of the mowing tying machine, and FIGS. 7 and 8 are side views showing a comparative example of the operation expanding linkage mechanism. (9) ... rear side plate, (10) ... bottom surface, (11) ... operation expansion linkage mechanism, (12) ... U-shaped guide part, (12b) ...
Lower piece, (12c) ... Upper piece, (15) ... Fixing pin, (D)
…… Dump carrier, (X 1 ) …… Dump swing axis, (X 2 )…
… Rear plate swing axis.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−126736（ＪＰ，Ａ) 特開 平１−269632（ＪＰ，Ａ) ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-126736 (JP, A) JP-A-1-269632 (JP, A)
Claims (1)
し、この後側板（９）を、前記ダンプ荷台（Ｄ）の底面
（10）と略面一になる全開位置と、前記底面（10）と略
直交する全閉位置と、前記全開位置と前記全閉位置との
中間にある半開位置との夫々に亘って、下部横軸芯
（X2）周りで切換揺動自在に設けるとともに、前記ダン
プ荷台（Ｄ）のダンプ作動による揺動に伴って、前記後
側板（９）を前記半開位置から前記全開位置まで拡大揺
動させる作動拡大連係機構（11）を設け、前記作動拡大
連係機構（11）を、機体側に設けた固定ピン（15）と、
後側板（９）の下端部に設けたピン係入溝（13）を備え
たＵ字状のガイド部（12）とから構成するとともに、前
記機体側の固定ピン（15）を、後側板（９）の半開位置
でダンプ荷台（Ｄ）の揺動軸芯（X1）と後側板（９）の
揺動軸芯（X2）との間で後側板（９）の揺動軸芯（X2）
寄りの箇所に位置するように設定して設け、さらに、Ｕ
字状のガイド部（12）を、後側板（９）の全開位置で固
定ピン（15）に対する上片（12c）の接当が解除されて
下片（12b）のみが片当たりするようにＵ字状ガイド部
（12）の上片（12c）と下片（12b）との長さを異ならせ
て形成し、さらに、前記機体側に設けた固定ピン（15）
を機体に対して抜差し自在に構成して、前記後側板
（９）を全閉位置で固定可能に構成してある作業車のダ
ンプ荷台構造。A rear plate (9) is pivotally supported on a dump carrier (D), and the rear plate (9) is fully opened at a position substantially flush with a bottom surface (10) of the dump carrier (D). A freely swingable switch around the lower horizontal axis (X 2 ) over each of a fully closed position substantially orthogonal to the bottom surface (10) and a half open position intermediate between the fully open position and the fully closed position. And an operation expanding linkage mechanism (11) for expanding and swinging the rear side plate (9) from the half-open position to the full-open position in accordance with the swing by the dumping operation of the dump carrier (D). An operation expansion linkage mechanism (11) is provided with a fixing pin (15) provided on the fuselage side;
A U-shaped guide portion (12) provided with a pin engagement groove (13) provided at a lower end portion of the rear side plate (9), and the fixing pin (15) on the body side is connected to the rear side plate ( In the half-open position of 9), between the swing axis (X 1 ) of the dump carrier (D) and the swing axis (X 2 ) of the rear plate (9), the swing axis ( X 2)
It is set so that it is located closer to
The U-shaped guide portion (12) is moved so that the contact of the upper piece (12c) with the fixing pin (15) is released at the fully opened position of the rear side plate (9) so that only the lower piece (12b) hits one side. The upper piece (12c) and the lower piece (12b) of the character-shaped guide portion (12) are formed to have different lengths, and furthermore, a fixing pin (15) provided on the body side.
A dump truck structure for a working vehicle, wherein the rear side plate (9) is configured to be able to be fixed to the fully closed position by being configured to be able to be inserted into and removed from the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1071287A JP2571275B2 (en) | 1989-03-22 | 1989-03-22 | Work vehicle dump bed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1071287A JP2571275B2 (en) | 1989-03-22 | 1989-03-22 | Work vehicle dump bed structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02249730A JPH02249730A (en) | 1990-10-05 |
| JP2571275B2 true JP2571275B2 (en) | 1997-01-16 |
Family
ID=13456332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1071287A Expired - Lifetime JP2571275B2 (en) | 1989-03-22 | 1989-03-22 | Work vehicle dump bed structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571275B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102553500B1 (en) * | 2023-03-08 | 2023-07-07 | 김영재 | Tailgate automatic opening and shutting device for dump truck |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113608107B (en) * | 2021-08-06 | 2024-05-10 | 深圳市鸿发鑫科技有限公司 | Circuit board test equipment with double channels |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126736A (en) * | 1981-01-26 | 1982-08-06 | Mazda Motor Corp | Flat door opening unit for dump truck |
| JPH07118010B2 (en) * | 1986-10-15 | 1995-12-18 | 富士通株式会社 | Mask signal processing circuit |
-
1989
- 1989-03-22 JP JP1071287A patent/JP2571275B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102553500B1 (en) * | 2023-03-08 | 2023-07-07 | 김영재 | Tailgate automatic opening and shutting device for dump truck |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02249730A (en) | 1990-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |