JPS6241891B2 - - Google Patents
Info
- Publication number
- JPS6241891B2 JPS6241891B2 JP4076380A JP4076380A JPS6241891B2 JP S6241891 B2 JPS6241891 B2 JP S6241891B2 JP 4076380 A JP4076380 A JP 4076380A JP 4076380 A JP4076380 A JP 4076380A JP S6241891 B2 JPS6241891 B2 JP S6241891B2
- Authority
- JP
- Japan
- Prior art keywords
- canopy
- hydraulic
- cargo box
- cylinder
- driven
- 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
Links
- 238000000605 extraction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明はダンプカー、特に天蓋を備えたダンプ
カーの荷箱傾動制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo box tilting control device for a dump truck, particularly a dump truck equipped with a canopy.
一般に、ダンプカー、塵芥収集車などの特装車
は、走行用エンジンに連係されるミツシヨンに動
力取出装置を付設し、これにより抽出されるエン
ジン出力をもつて種々の作業機器、例えば荷箱傾
動用油圧シリンダを駆動できるようにしている。 In general, special vehicles such as dump trucks and garbage collection trucks have a power extraction device attached to the transmission connected to the driving engine, and the extracted engine output is used to power various work equipment, such as hydraulic cylinders for tilting cargo boxes. It is possible to drive.
ところで、前記動力取出装置を接に操作した後
荷箱傾動用油圧シリンダを作動させ、積載物を排
出させる場合、その積載物が汚泥などにあつては
荷箱の傾動に拘らず容易に排出されず、一定時間
経過後全体が一度に排出するという性状を有す
る。このため、荷箱が天蓋によつて外気と遮断さ
れている場合、汚泥などの積載物が急激に排出さ
れると、その排出された空間が略真空状態にな
り、大気圧によつて天蓋が押圧され、陥没する恐
れがある。 By the way, when the hydraulic cylinder for tilting the cargo box is activated to discharge the loaded material after directly operating the power take-off device, if the loaded material is sludge or the like, it can be easily discharged regardless of the tilting of the cargo box. First, it has the property that the entire body is discharged at once after a certain period of time has passed. For this reason, when a cargo box is isolated from the outside air by a canopy, if sludge or other cargo is suddenly discharged, the discharged space becomes almost a vacuum, and atmospheric pressure closes the canopy. There is a risk that it will be pressed down and collapse.
本発明は上記の点に鑑みてなされたもので、荷
箱を傾動させて汚泥などの積載物を排出させる
際、天蓋が開放状態にないと荷箱傾動用油圧シリ
ンダが作動しないよう規制するものであつて、以
下本発明の実施例について説明すると、
１は上方を開放した荷箱で、その両側に外面が
下に向つて末広状にひろがる側壁２を備えてい
る。各側壁２にはそれぞれ荷箱１の前後方向にの
びる縦桁３が固着されており、この縦桁３の真下
には、この縦桁３と側壁２とで形成される凹部４
が形成されている。縦桁３の前後にはブラケツト
５が突設され、このブラケツト５に支持軸６をも
つて天蓋７の基端が回動自在に軸支されている。
天蓋７はその基部８が彎曲されており、この基部
８は天蓋７の閉成時に側壁２の上縁を覆い、また
その全開時には前記凹部４に収納されるようにな
つている。天蓋７の基部８内面にはシール部材９
が接着され、このシール部材９は天蓋７が閉じ位
置にあるとき、前記縦桁３の角部に圧着されて天
蓋７と側壁２間をシールすることができ、また天
蓋７の先端縁にもシール部材１０が固着され、そ
のシール部材１０は左右の天蓋７が閉成されたと
き、それらの間の間隙をシールすることができ
る。したがつて、前記天蓋７が閉成される際には
荷箱は密閉状態に保持されるものである。荷箱１
の側壁下部にはストツパ１１が固着され、天蓋７
の全開位置を規制できるようになつている。 The present invention has been made in view of the above points, and regulates the hydraulic cylinder for tilting the cargo box from operating unless the canopy is in an open state when the cargo box is tilted to discharge loaded materials such as sludge. Hereinafter, an embodiment of the present invention will be described. Reference numeral 1 denotes a packing box which is open at the top, and is provided with side walls 2 on both sides of which the outer surface extends downward in a widening shape. A vertical beam 3 extending in the longitudinal direction of the packing box 1 is fixed to each side wall 2, and a recess 4 formed by the vertical beam 3 and the side wall 2 is located directly below the vertical beam 3.
is formed. Brackets 5 are provided protruding from the front and rear of the longitudinal beam 3, and the base end of the canopy 7 is rotatably supported on the bracket 5 with a support shaft 6.
The canopy 7 has a curved base 8, which covers the upper edge of the side wall 2 when the canopy 7 is closed, and is accommodated in the recess 4 when the canopy 7 is fully opened. A sealing member 9 is provided on the inner surface of the base 8 of the canopy 7.
When the canopy 7 is in the closed position, this sealing member 9 can be crimped to the corner of the vertical beam 3 to seal between the canopy 7 and the side wall 2, and can also be attached to the tip edge of the canopy 7. A sealing member 10 is fixed, and the sealing member 10 can seal the gap between the left and right canopies 7 when they are closed. Therefore, when the canopy 7 is closed, the cargo box is kept in a sealed state. Packing box 1
A stopper 11 is fixed to the lower side wall of the canopy 7.
The fully open position can be controlled.
荷箱１の端壁１２の中央部下方には伸縮シリン
ダ１３が固着され、この伸縮シリンダ１３のピス
トンロツド１４先端には、前記端壁１２に上下に
摺動可能に支持されるラツク１５がピン連結され
ている。ラツク１５には、前記端壁１２に回転自
在に軸支されるピニオン１６が噛合され、このピ
ニオン１６には駆動鎖車１７が一体に固着されて
いる。また前記天蓋７の支持軸６端部には被動鎖
車１９が固着され、前記駆動鎖車１７と被動鎖車
１９間には鎖帯１８が懸回されており、伸縮シリ
ンダ１３を伸縮作動すれば、ラツク１５、ピニオ
ン１６、駆動鎖車１７、鎖帯１８および被動鎖車
１９を介して支持軸６を回転し、天蓋７を開閉す
ることができる。 A telescopic cylinder 13 is fixed below the center of the end wall 12 of the cargo box 1, and a rack 15 that is supported by the end wall 12 so as to be slidable up and down is connected to the tip of a piston rod 14 of the telescopic cylinder 13 with a pin. has been done. A pinion 16 rotatably supported by the end wall 12 is meshed with the rack 15, and a driving chain wheel 17 is integrally fixed to the pinion 16. Further, a driven chain wheel 19 is fixed to the end of the support shaft 6 of the canopy 7, and a chain band 18 is suspended between the driving chain wheel 17 and the driven chain wheel 19. For example, the canopy 7 can be opened and closed by rotating the support shaft 6 via the rack 15, pinion 16, driving chain wheel 17, chain band 18 and driven chain wheel 19.
一方、１９は走行用エンジンＥにトランスミツ
シヨンＴを介して連接される動力取出装置で、該
動力取出装置１９は、油圧作動系２０によつて接
断操作できるようになつているもので、以下その
油圧作動系２０について説明すると、前記動力取
出装置１９の切換操作部は、操作シリンダ２１の
ピストンロツド２２に連結されており、その操作
シリンダ２１の圧力室２３は電磁切換弁２４の切
換操作によつて油圧ポンプＰあるいは油溜２５に
連通されるようになつている。この油圧ポンプＰ
は油圧モータＭとともに油圧パワーユニツトを構
成し、車載用バツテリーで駆動されるものであ
る。前記電磁切換弁２４のソレノイドSOLが付
勢されると、その電磁切換弁２４を右側に切換
え、油圧ポンプＰからの圧力油を操作シリンダ２
１の圧力室２３に供給し、操作シリンダ２１を作
動して動力取出装置１９を接続させることがで
き、その出力軸２６を駆動してこれに連結され
る、図示しない荷箱傾動用油圧シリンダを駆動す
ることができる。また前記ソレノイドSOLが消
勢されると、電磁切換弁２４は左側に切換つて操
作シリンダ２１の圧力室２３を油溜２５に連通
し、操作シリンダ２１をその中の戻しばね２７に
よつて非作動位置に戻し、動力取出装置１９を切
断することができる。 On the other hand, reference numeral 19 denotes a power take-off device connected to the driving engine E via a transmission T, and the power take-off device 19 can be disconnected and disconnected by a hydraulic operating system 20. The hydraulic operating system 20 will be explained below. The switching operation section of the power extraction device 19 is connected to the piston rod 22 of the operating cylinder 21, and the pressure chamber 23 of the operating cylinder 21 is connected to the switching operation of the electromagnetic switching valve 24. Therefore, it is connected to a hydraulic pump P or an oil reservoir 25. This hydraulic pump P
Together with a hydraulic motor M, this constitutes a hydraulic power unit and is driven by an on-vehicle battery. When the solenoid SOL of the electromagnetic switching valve 24 is energized, the electromagnetic switching valve 24 is switched to the right side, and the pressure oil from the hydraulic pump P is transferred to the operating cylinder 2.
1, the operating cylinder 21 can be operated to connect the power take-off device 19, and the output shaft 26 can be driven to connect a hydraulic cylinder for tilting the cargo box (not shown). Can be driven. Further, when the solenoid SOL is deenergized, the electromagnetic switching valve 24 is switched to the left side to communicate the pressure chamber 23 of the operating cylinder 21 with the oil sump 25, and the operating cylinder 21 is deactivated by the return spring 27 therein. It can be returned to position and the power take-off device 19 can be disconnected.
また、前述の伸縮シリンダ１３は操作切換弁２
８の切換操作により前記油圧ポンプＰと油溜２５
に連通されるようになつており、操作切換弁２８
を操作レバー２９によつて右側に切換えると、油
圧ポンプＰよりの圧油を伸縮シリンダ１３のロツ
ド側に供給し、天蓋７を閉成させ、また操作切換
弁２８を左側に切換えると圧油を伸縮シリンダ１
３のヘツド側に供給し、天蓋７を開放させるもの
である。 Further, the above-mentioned telescopic cylinder 13 is connected to the operation switching valve 2.
8, the hydraulic pump P and the oil reservoir 25
The operating switching valve 28
When the operation lever 29 is switched to the right side, pressure oil from the hydraulic pump P is supplied to the rod side of the telescopic cylinder 13, closing the canopy 7. When the operation switching valve 28 is switched to the left side, pressure oil is supplied to the rod side of the telescopic cylinder 13. Telescopic cylinder 1
3 and opens the canopy 7.
なお、LSは天蓋７が閉成位置にある時、その
接点を断に付勢するリミツトスイツチで、天蓋７
が開放されるとその接点を接にして以後の通電を
可能にするものである。また、SWはメインスイ
ツチで前記油圧パワーユニツトの電動モータＭを
作動制御するものである。 In addition, LS is a limit switch that biases the contact to disconnect when the canopy 7 is in the closed position.
When the contact is opened, the contact is connected to enable subsequent energization. Further, SW is a main switch that controls the operation of the electric motor M of the hydraulic power unit.
次に本発明の実施例の作用について説明する
と、いま第１図に実線で示すように天蓋７の閉成
状態においてメインスイツチSWを接に投入し、
電動モータＭを駆動させた後、操作切換弁２８を
左側に切換えると油圧ポンプＰよりの圧油は伸縮
シリンダ１３のヘツド側に流入する。したがつ
て、伸縮シリンダ１３の伸長作動により、ラツク
１５が上昇してピニオン１６を回転し、駆動鎖車
１７、鎖帯１８および被動鎖車１９を介して天蓋
７を開放することができる。 Next, to explain the operation of the embodiment of the present invention, when the canopy 7 is closed as shown by the solid line in FIG. 1, the main switch SW is turned on,
After driving the electric motor M, when the operation switching valve 28 is switched to the left side, the pressure oil from the hydraulic pump P flows into the head side of the telescopic cylinder 13. Therefore, when the telescopic cylinder 13 is extended, the rack 15 is raised and the pinion 16 is rotated, so that the canopy 7 can be opened via the driving chain wheel 17, the chain strap 18, and the driven chain wheel 19.
天蓋７の開放はリミツトスイツチLSの接点を
接に付勢するため、電磁切換弁２４のソレノイド
を励磁し、右側に切換える。したがつて、油圧ポ
ンプＰよりの圧油は操作シリンダ２１の圧力室２
３に流入し、動力取出装置１９を接に作動させる
ため図示しない荷箱傾動用油圧シリンダを作動さ
せることができる。 Opening the canopy 7 energizes the contact of the limit switch LS, thereby energizing the solenoid of the electromagnetic switching valve 24 and switching it to the right side. Therefore, the pressure oil from the hydraulic pump P flows into the pressure chamber 2 of the operating cylinder 21.
3, and in order to directly operate the power take-off device 19, a hydraulic cylinder for tilting the cargo box (not shown) can be operated.
また、荷箱１内への荷物積込みを終了して天蓋
を閉成させる場合は、操作切換弁２８を右側に切
換えればよい。その時、油圧ポンプＰよりの圧油
は伸縮シリンダ１３を収縮作動させ、ラツク１５
が下降し、ピニオン１６、駆動鎖車１７、鎖帯１
８および被動鎖車１９を介して天蓋７を閉成する
ことができる。この際、第１図に実線で示すよう
に天蓋７が全閉されると、シール部材９が縦桁３
の角部に圧着して天蓋７と側壁２間をシールし、
それらの間から汚泥などの積載物がこぼれおちる
ことはない。 Furthermore, when the canopy is closed after loading cargo into the cargo box 1, the operation switching valve 28 may be switched to the right side. At that time, the pressure oil from the hydraulic pump P causes the telescopic cylinder 13 to contract and operate the rack 15.
is lowered, and the pinion 16, drive chain wheel 17, chain band 1
8 and a driven chain wheel 19, the canopy 7 can be closed. At this time, when the canopy 7 is fully closed as shown by the solid line in FIG.
to seal between the canopy 7 and the side wall 2 by crimping the corner of the
Loads such as sludge will not spill out between them.
本発明においては動力取出装置１９の操作シリ
ンダ２１と、天蓋７の伸縮シリンダ１３とを共通
のパワーユニツトにより操作したが、車輛に搭載
されるコンプレツサーや油圧ポンプの空気源や油
圧源を合わせて利用し、これらとパワーユニツト
とを組み合わせて別々の動力源で作動させるよう
にしてもよい。 In the present invention, the operating cylinder 21 of the power take-off device 19 and the telescopic cylinder 13 of the canopy 7 are operated by a common power unit, but the air source and hydraulic power source of the compressor and hydraulic pump mounted on the vehicle are also used. However, these and the power unit may be combined and operated by separate power sources.
また、本実施例では荷箱傾動用油圧シリンダを
動力取出装置の断接で制御したが、油圧シリンダ
に至る油圧回路中に電磁切換弁を装設し、天蓋閉
鎖中は前記油圧シリンダへの圧油を遮断したり、
あるいはタンクに還流させるようにしてもよい。 In addition, in this embodiment, the hydraulic cylinder for tilting the cargo box was controlled by connecting and disconnecting the power take-off device, but an electromagnetic switching valve is installed in the hydraulic circuit leading to the hydraulic cylinder, so that when the canopy is closed, the pressure to the hydraulic cylinder is controlled. shut off oil,
Alternatively, it may be refluxed into a tank.
以上のように本発明にあつては、積載物排出用
油圧シリンダを作動させる場合は必ず天蓋を開放
させなければならないことから、荷箱に真空圧が
作用することがなく、天蓋の破損を確実に防止す
ることができる。 As described above, in the present invention, since the canopy must be opened when the hydraulic cylinder for discharging the loaded material is operated, vacuum pressure is not applied to the cargo box, and damage to the canopy is ensured. can be prevented.
図は本発明の実施例を示すもので、第１図は荷
箱の一部縦断正面図とその作動油圧回路図を示し
たものであり、第２図は電気回路図である。
１……荷箱、７……天蓋、９……シール部材、
１３……伸縮シリンダ、１９……動力取出装置、
２１……操作シリンダ。
The drawings show an embodiment of the present invention, with FIG. 1 showing a partially vertical front view of a cargo box and its operating hydraulic circuit diagram, and FIG. 2 showing an electric circuit diagram. 1... Packing box, 7... Canopy, 9... Seal member,
13...Telescopic cylinder, 19...Power take-off device,
21...Operation cylinder.
Claims (1)
と、該動力取出装置を介して駆動される油圧ポン
プと、該油圧ポンプよりの圧油を供給されて荷箱
を傾倒せしめる油圧シリンダとよりなるダンプカ
ーにおいて、荷箱上面開口部を開閉し、適宜のア
クチユエータにより駆動される天蓋を設けるとと
もに、該天蓋の開放状態を検出する検知手段を配
設してなり、前記天蓋の閉鎖時、油圧シリンダに
よる荷箱の傾動を規制するように構成したことを
特徴とする、ダンプカーの荷箱傾動制御装置。 ２ 前記天蓋のアクチユエータは、油圧パワーユ
ニツトからの圧油で駆動する油圧アクチユエータ
である特許請求の範囲第１項記載のダンプカーの
荷箱傾動制御装置。[Scope of Claims] 1. A power extraction device linked to a traveling engine, a hydraulic pump driven via the power extraction device, and a hydraulic pressure system supplied with pressure oil from the hydraulic pump to tilt the cargo box. A dump truck consisting of a cylinder is provided with a canopy that opens and closes the top opening of the cargo box and is driven by an appropriate actuator, and is provided with a detection means for detecting the open state of the canopy, and when the canopy is closed. A cargo box tilting control device for a dump truck, characterized in that the device is configured to restrict tilting of a cargo box by a hydraulic cylinder. 2. The cargo box tilting control device for a dump truck according to claim 1, wherein the canopy actuator is a hydraulic actuator driven by pressure oil from a hydraulic power unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4076380A JPS56138028A (en) | 1980-03-29 | 1980-03-29 | Control device for working equipment in vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4076380A JPS56138028A (en) | 1980-03-29 | 1980-03-29 | Control device for working equipment in vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56138028A JPS56138028A (en) | 1981-10-28 |
| JPS6241891B2 true JPS6241891B2 (en) | 1987-09-04 |
Family
ID=12589655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4076380A Granted JPS56138028A (en) | 1980-03-29 | 1980-03-29 | Control device for working equipment in vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56138028A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2601401Y2 (en) * | 1991-10-14 | 1999-11-22 | 日産ディーゼル工業株式会社 | Dump vessel canopy control device |
-
1980
- 1980-03-29 JP JP4076380A patent/JPS56138028A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56138028A (en) | 1981-10-28 |
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