JPS61171633A - Rear door opening and closing device of dump truck - Google Patents
Rear door opening and closing device of dump truckInfo
- Publication number
- JPS61171633A JPS61171633A JP1079285A JP1079285A JPS61171633A JP S61171633 A JPS61171633 A JP S61171633A JP 1079285 A JP1079285 A JP 1079285A JP 1079285 A JP1079285 A JP 1079285A JP S61171633 A JPS61171633 A JP S61171633A
- Authority
- JP
- Japan
- Prior art keywords
- rear door
- support arm
- arm
- load
- rotary
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/26—Means for controlling movement of tailboards or sideboards
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
Description
【発明の詳細な説明】
（１） 発明の目的
本発明は簡便にして確実に開閉し且つ経済的なしかも極
めて能率的なダンプカーのリアドア開閉装［１ｍ関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention The present invention relates to a rear door opening/closing system for a dump truck [1 m] that is simple, reliable, economical, and extremely efficient.
通常ダンプカーのリアドアは、荷台の左右両縁端部にお
いて回転自在に枢着されでおり、積荷ダンプの際の荷台
の上昇による開閉装置の作動によってケヤッチが解除し
、且つ積荷の押圧力によってリアドアが開くようになっ
ている。このため積荷が砂利や砂等であれば荷降し作業
には特別の支障はないが、積荷が大石、大木根、廃材等
損桁の高さがリアドアの高さより大きいものである場合
やこれらの積荷のように１量大なるものである場合は積
荷はリアドアの頂部につかえてダンプ作業が困難となる
ばかりでなく、積荷がリアドアに激突してこれを損傷し
時には、リアドアにつかえた積荷の菫さによって車体前
部が逆立ち状態となり転倒の危険さえ生ずる。特にダン
プ場所が高い道路側である場合車体が道路下に転落する
ことも稀ではなくこの種の事故の絶えないのが現状であ
る。Normally, the rear doors of a dump truck are rotatably attached to both the left and right edges of the loading platform, and when the loading platform rises when dumping a load, the opening/closing device is activated to release the key, and the rear door is opened by the pressing force of the load. It is designed to open. For this reason, if the cargo is gravel or sand, there will be no particular problem in unloading, but if the cargo is large stones, roots, waste materials, etc., and the height of the damaged girder is greater than the height of the rear door, etc. If the cargo is large, such as a large cargo, the cargo will not only get stuck at the top of the rear door, making dumping operations difficult, but also cause the cargo to crash into the rear door and damage it, causing the cargo stuck to the rear door to be damaged. The violet light can cause the front of the vehicle to stand on its head, creating the risk of it falling over. Especially when the dump site is on a high road side, it is not uncommon for the vehicle to fall onto the road, and this type of accident is a constant occurrence.
また砂利や砂のようなダンプしやすい積荷でも地上に降
りた荷がリアドアにつかえるので積荷を完全にダンプす
る迄には、２回乃至３回ダンプカーを少しずつ前進させ
て作業を進めなければならないという不便さがある。こ
のようなリアドアの損傷や事故を防止するため、或はダ
ンプ場所が狭小ろでは、予めリアドアを取り外してから
ダンプ作業を行うことも暫々であってダンプ作業の能率
低下という結果を来たしている。In addition, even if the load is easy to dump, such as gravel or sand, the load on the ground can get caught in the rear door, so it is necessary to move the dump truck forward two or three times little by little until the load is completely dumped. This is an inconvenience. In order to prevent such rear door damage and accidents, or if the dumping area is small, it is sometimes necessary to remove the rear door before starting the dumping operation, which results in a decrease in the efficiency of the dumping operation. .
出願人は前記のような危険を防止すると共に車体の損傷
をなくし、且つダンプ作業の能率向上が期待できる簡便
にして経済的なダンプカーのリアドア開閉Ｈ＆を提供せ
んとするものである。The applicant aims to provide a simple and economical method for opening and closing the rear door of a dump truck, which prevents the above-mentioned dangers, eliminates damage to the vehicle body, and can be expected to improve the efficiency of dumping operations.
以下本発明の実施例である図面に従って説明する。Embodiments of the present invention will be described below with reference to the drawings.
（２） 発明の構成について
本発明は上記のような目的を達成するため次のような構
成を有している。以下実施例である図面ζ二従って説明
する。(2) Regarding the structure of the invention The present invention has the following structure in order to achieve the above objects. The following description will be made with reference to drawing ζ2 which is an embodiment.
第一図に示すように本発明は、取付孔（７）を材する底
板（３）に回転アーム（４）７に上下回動自在に軸着し
ている。（８）はその回転軸で、回転アーム（４）の先
端には支持アーム案内兼支持枠（６）が一体として構成
されている。（９）゛は補強側版で、支持アーム案内兼
支持枠（６）と回転アーム（４）とを一体的に構成しで
ある。なお支持アーム案内兼支持枠（６）を回転アーム
（４）の先端部に構成する際溶接などによって強固に固
定丁れば格別に補強側板（９）を設けなくともよいが、
これを設けることにより装置内への土砂のた方か装置全
体としてはより効果的である。（１０）は回転軸（８）
の軸受で底板（３）に一体として設けである。次に、支
持アーム（２）は底板（３）の適宜位置に上下回動自在
なるよ５４着されており、（１１）はその回転軸で、（
１２）は軸受であって底板（３）に一体として設けであ
る。As shown in FIG. 1, the present invention has a rotary arm (4) 7 pivoted to a bottom plate (3) having a mounting hole (7) so as to be movable up and down. (8) is its rotation axis, and a support arm guide/support frame (6) is integrally constructed at the tip of the rotation arm (4). (9) is a reinforcing side plate which integrally comprises a support arm guide/support frame (6) and a rotating arm (4). Note that when constructing the support arm guide and support frame (6) at the tip of the rotating arm (4), if it is firmly fixed by welding or the like, there is no need to provide a reinforcing side plate (9).
By providing this, it is more effective to prevent dirt from entering the equipment, and the equipment as a whole is more effective. (10) is the rotation axis (8)
The bearing is integrally provided on the bottom plate (3). Next, the support arm (2) is mounted at an appropriate position on the bottom plate (3) so that it can move up and down, and (11) is its rotation axis.
12) is a bearing, which is provided integrally with the bottom plate (3).
底板（３）上に設ける回転軸（１１）の位置は回転アー
ム（４）の長さの略々中間位置ぐらいが最もよく、又支
持アーム（２）の長さは回転軸（１１）と回転アーム（
４）の先端までの長さの略々２倍 −強程度と
するのが理想的で、この長さであれば上方回動した支持
アーム（２）が荷台側版上縁にたいして垂直の位置でリ
アドア（１）が最大の開扉度を示し且つダンプ終了で自
然に下方回動する。The best position for the rotating shaft (11) provided on the bottom plate (3) is approximately halfway between the length of the rotating arm (4), and the length of the support arm (2) is similar to that of the rotating shaft (11). arm(
Ideally, the length should be approximately twice the length to the tip of 4), and at this length, the support arm (2) rotated upward will be in a perpendicular position to the upper edge of the platform side plate. The rear door (1) shows the maximum degree of opening and naturally rotates downward at the end of dumping.
次に支持アーム（２）の先端上部にはドア回転軸０３）
の軸受（１４）が一体として設けてあり、ドア回転軸（
１３）が軸着されている。なお（１５）はリアドア敗り
付け金具でドア回転軸（１３）と一体に形成（第一図Ｇ
）又は別体として構成（第一図Ｈ）され組み付けられて
いる。リアドア（１）はこのリアドア取付金具（１５）
Ｃ取付け固定される。Next, at the top of the support arm (2) is the door rotation axis 03).
A bearing (14) is provided as an integral part, and the door rotation shaft (
13) is pivoted. Note that (15) is a rear door fitting that is integrally formed with the door rotation shaft (13) (see Figure 1G).
) or constructed as a separate body (H in Figure 1) and assembled. The rear door (1) uses this rear door mounting bracket (15)
C is installed and fixed.
なお、支持アーム（２）は回転アーム（４）の支持アー
ム案内兼支持枠（６）に摺動自在なるよう内嵌挿して回
転軸（１１）に粒着しである。The support arm (2) is slidably inserted into the support arm guide/support frame (6) of the rotation arm (4) and attached to the rotation shaft (11).
（３）発明の作用について
本発明は以上のような構成を有するが、次にその作用に
ついて述へる。(3) Effects of the invention The present invention has the above-described configuration, and its effects will be described next.
第二図に示すように本装置の紙板（３）’ａ−荷台側板
上縁（５）にその先端と支持アーム（２）の先端とを一
致せしめて載置しビス（１６）等で取付け固冗する４
次にリアドア（１）をリアドア取付金具（１５）に敗付
ける。（１７）はその取付けビスである。積荷（１８）
をダンプするため荷台（２３）が上昇し初めるとキャッ
チ（１９）が解除され積荷（１８）が下降してリアドア
（１）に当るとリアドア（１）はドア回転軸（１３）を
軸として開扉（矢印（２０））の方向へ回動し且つ積荷
（１８）の降下する力が大なればなるほど支持アーム（
２）が支持アーム回転軸（１］）を軸として上方（矢印
（２１））へ回動運動する。然るときは支持アーム（２
）が支持アーム案内兼支持枠（６）内において回転アー
ム（４）回動運動（矢印（２２） ）する。As shown in Figure 2, place the paper board (3)'a of this device on the upper edge of the carrier side plate (5) with its tip aligned with the tip of the support arm (2), and attach with screws (16), etc. 4 Next, attach the rear door (1) to the rear door mounting bracket (15). (17) is the mounting screw. Cargo (18)
When the cargo platform (23) begins to rise to dump the cargo, the catch (19) is released and the cargo (18) descends and hits the rear door (1), and the rear door (1) opens around the door rotation axis (13). The greater the force of rotation in the direction of the door (arrow (20)) and the lowering of the load (18), the more the support arm (
2) rotates upward (arrow (21)) about the support arm rotation axis (1]). In such a case, use the support arm (2
) rotates the rotary arm (4) within the support arm guide/support frame (6) (arrow (22)).
これら支持アーム（２）及び回転アーム（４）の上方回
動による最大積荷開口巾は支持アーム（２）が荷台側板
上縁（５）に対して垂直に位置した場合といえる。それ
以上回動じた場合は（通常であればこのような状態にな
ることはまず階無と考えてよい。）積荷ダンプ終了後に
荷台を降下した場合リアドア（１）が閉扉回動不可能と
なることがある。いずれにしても積荷降下の衝撃力によ
ってリアドア（１）が回動すると共に支持アーム（２）
及び回転アーム（４）が上昇回動じて衝撃力を吸収する
と共に積荷の降下口を大ぎく開くことになる。The maximum load opening width due to the upward rotation of the support arm (2) and rotation arm (4) can be said to be when the support arm (2) is positioned perpendicular to the upper edge (5) of the cargo platform side plate. If it rotates more than that (normally, such a situation can be considered to be empty), if the loading platform is lowered after the cargo dump is completed, the rear door (1) will not be able to rotate closed. Sometimes. In any case, the rear door (1) rotates due to the impact force of the lowering of the cargo, and the support arm (2)
The rotating arm (4) then rotates upward, absorbing the impact force, and widening the loading port.
（４）発明の効果について
本発明は以上のような構成及び作用ヲ仔するから積荷（
１８）が勢いよくリアドア（１）に撃突してもリアドア
（１）及び支持アーム（２）並びに回転アーム（４）が
それぞれ回転軸（１３）傷を防止し、更に積荷の降下口
を大ぎく開口するので大塊の積荷（１８）でも容易に地
上へとダンプされると共にリアドア（１）が積荷の降下
を邪魔しないから従来より荷台から遠く離れた位置Ｃ二
荷降しが可能であり、従って荷降しのためダンプカーに
前方に移動する必要もないから作業の能率も−膚回上す
る。また従来のように積荷がリアドア（１）に支えて荷
重が荷台の地部に集中することも回避できるのでダンプ
カーの転倒などの事故も防止可能である等多くの効果を
有する。(4) Effects of the invention Since the present invention has the above-mentioned structure and function, the cargo (
18) hits the rear door (1) with force, the rear door (1), the support arm (2), and the rotating arm (4) each prevent the rotating shaft (13) from being damaged, and also greatly widen the opening for the cargo to descend. Since it opens tightly, even a large load (18) can be easily dumped to the ground, and since the rear door (1) does not interfere with the lowering of the load, it is possible to unload the load at a position C2 farther away from the loading platform than before. Therefore, there is no need to move forward to the dump truck for unloading, which greatly improves work efficiency. Furthermore, it is possible to avoid the conventional case where the load is supported by the rear door (1) and the load is concentrated on the bottom of the loading platform, so accidents such as tipping over of the dump truck can be prevented, and many other effects are achieved.
図面は実施例を示すもので第一図（Ａ）は右側第二図は
本発明装置をダンプカーの荷台に装着したその作用図で
、点線で示すリアドア及び支持アーム並びに回転アーム
の位置は積荷落下口の最大開扉位置を示すものである。
（１）・・・・・・・・・リアドア
イ（２）・・・・・・・
・・支持アーム
（３）・・・・・・・・・底板The drawings show an embodiment, and the first figure (A) is on the right side. This indicates the maximum opening position of the mouth. (1)・・・・・・・・・Rear door
I (2)・・・・・・・・・
・・Support arm (3)・・・・・Bottom plate
Claims (1)
う構成した底板（３）に、先端部に支持アーム（２）の
案内兼支持枠（６）を構成してなる回転アーム（４）を
上下回動自在なるよう■着し、他方先端部にリアドア（
１）を回転自在に取り付け可能に構成した支持アーム（
２）を前記支持枠（６）に摺動自在なる如く内嵌挿し且
つ底板（３）上に上下回動可能に軸着してなることを特
徴とするダンプカーのリアドア開閉装置。A rotary arm (4) whose tip serves as a guide and support frame (6) for the support arm (2) is attached to the bottom plate (3), which is configured to be attached to the upper edge (5) of the side plate of the dump truck. It is attached so that it can rotate freely, and the rear door (
1) A support arm (
2) is slidably inserted into the support frame (6) and pivoted on the bottom plate (3) so as to be vertically movable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079285A JPS61171633A (en) | 1985-01-25 | 1985-01-25 | Rear door opening and closing device of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079285A JPS61171633A (en) | 1985-01-25 | 1985-01-25 | Rear door opening and closing device of dump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171633A true JPS61171633A (en) | 1986-08-02 |
| JPH0120092B2 JPH0120092B2 (en) | 1989-04-14 |
Family
ID=11760191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1079285A Granted JPS61171633A (en) | 1985-01-25 | 1985-01-25 | Rear door opening and closing device of dump truck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61171633A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080442A (en) * | 1989-02-21 | 1992-01-14 | Brinly-Hardy Co., Inc. | Collector cart |
| US5174632A (en) * | 1985-07-25 | 1992-12-29 | Philippi-Hagenbuch, Inc. | No-bounce tailgate assembly |
| US5249843A (en) * | 1985-07-25 | 1993-10-05 | Hagenbuch Roy George Le | No-bounce tailgate assembly |
-
1985
- 1985-01-25 JP JP1079285A patent/JPS61171633A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174632A (en) * | 1985-07-25 | 1992-12-29 | Philippi-Hagenbuch, Inc. | No-bounce tailgate assembly |
| US5249843A (en) * | 1985-07-25 | 1993-10-05 | Hagenbuch Roy George Le | No-bounce tailgate assembly |
| US5080442A (en) * | 1989-02-21 | 1992-01-14 | Brinly-Hardy Co., Inc. | Collector cart |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0120092B2 (en) | 1989-04-14 |
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