JP3559981B2

JP3559981B2 - Dump truck

Info

Publication number: JP3559981B2
Application number: JP06827098A
Authority: JP
Inventors: 中村　　元
Original assignee: 株式会社中国総業
Priority date: 1998-03-18
Filing date: 1998-03-18
Publication date: 2004-09-02
Anticipated expiration: 2018-03-18
Also published as: JPH11263161A

Description

【０００１】
【発明の属する技術分野】
本発明は土木工事現場や砕石現場等で土砂や岩石等を運搬する建設機械用のダンプトラックに関する。
【０００２】
【従来の技術】
建設機械用のダンプトラックとしては例えば図１に示すものが知られている。車体１に前輪２と後輪３を取付け、車体１の前部に運転室４を取付け、車体１の後部にベッセルと呼ばれる荷台５をヒンジ６で上下揺動自在に取付け、その荷台５と車体１に亘ってホイストシリンダ７が取付けてある。
【０００３】
【発明が解決しようとする課題】
前述の建設機械用のダンプトラックの荷台５は前部縦面８と底面９でほぼＶ字状で、荷台５の深さは前部縦面８と底面９の交差する前部寄り部分が最も深く、後端部は最も浅い。
【０００４】
このために、登坂時に荷台５内の積み荷がこぼれ落ちることがある。
【０００５】
そこで、本発明は前述の課題を解決できるようにしたダンプトラックを提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明は、車体１０に荷台１４を起立した排出姿勢と倒伏した積載姿勢に亘ってヒンジ１５で上下揺動自在に取付け、この荷台１４と車体１０に亘ってホイストシリンダ１６を取付けたダンプトラックにおいて、
前記荷台１４の底面１８を、水平に対して後部が前部よりも高くなるように斜めの前部寄り部分１８ａと、ほぼ水平な後部寄り部分１８ｂで形成して荷台１４の後端部を深くし、
取付用部材２４とゲート部材２５でゲート２０とし、この取付用部材２４を荷台１４に上下揺動自在で、かつ荷台１４が積載姿勢の時にゲート部材２５が荷台１４の底面１８における後部寄り部分１８ｂに当接して荷台１４の後部を閉塞する姿勢となるように取付け、
この取付用部材２４と車体１０に亘って索条３０を連結し、荷台１４が排出姿勢の時にゲート２０が自重で揺動しないように索条３０で支持して前述の閉塞する姿勢とほぼ同一の姿勢に保持するようにしたことを特徴とするダンプトラックである。
【０００８】
【作用】
本発明によれば、荷台１４の底面１８における後部寄り部分１８ｂがほぼ水平で、荷台１４の後部が深いから、積み荷量を増大できる。
また、荷台１４内の積み荷が一度に排出されることがない。
また、積み荷が左右方向に広がって排出されることがない。
また、積み荷の前後バランスが良い。
また、登坂時に積み荷が荷台１４の後部からこぼれ落ちることをゲート２０のゲート部材２５で防止できるし、荷台１４を排出姿勢とした時にゲート２０のゲート部材２５が積み荷の排出の邪魔にならない。しかも、ゲート２０を上下に揺動するシリンダ等の動力源が不要がある。
【００１０】
【発明の実施の形態】
図２に示すように、車体１０に前輪１１と後輪１２を取付け、この車体１０の前部に運転室１３が取付けてある。前記車体１０の後部寄りにベッセルと呼ばれる荷台１４がヒンジ１５で上下揺動自在に取付けてあり、この荷台１４と車体１０に亘ってホイストシリンダ１６が連結してある。
【００１１】
前記荷台１４は前部縦面１７と底面１８でほぼＶ字状で、その前部縦面１７は垂直に対して前方に向けて斜めとなり、底面１８はヒンジ１５を境として前部寄り部分１８ａが水平に対して後部が前部よりも高くなった斜めで、ヒンジ１５を境として後部寄り部分１８ｂがほぼ水平となっている。
【００１２】
このようであるから、荷台１４の後部の深さは後部寄り部分１８ｂがほぼ水平となった分だけ深くなり、それだけ積み荷量が増加する。
【００１３】
また、ホイストシリンダ１６を伸び作動して荷台１４を上方に揺動し、図２に仮想線で示す起立した排出姿勢とする時に、荷台１４のヒンジ１５よりも後部寄り部分の積み荷は早く排出され、荷台１４がさらに上方に揺動すると荷台１４のヒンジ１５よりも前部寄り部分の積み荷が排出される。これによって、荷台１４内の積み荷が一度に排出されることがない。
【００１４】
また、荷台１４の後部が深いから、その荷台１４の左右両側縦面１９が積み荷の排出ガイドの役目を果し、積み荷が左右方向に広がって排出されることがない。
【００１５】
また、荷台１４のヒンジ１５よりも後部寄り部分とヒンジ１５よりも前部寄り部分の積み荷量がほぼ均一となるので、積み荷の前後バランスが良い。
【００１６】
前記荷台１４にはゲート２０が取付けてある。このゲート２０は図２，図３，図４に示すように、左右の支持アーム２１と、この左右の支持アーム２１の長手方向一端部間に連結した横材２２と、前記左右の支持アーム２１の長手方向他端寄りに斜め上向きに固着した補助アーム２３で平面形状がほぼコ字状となった取付用部材２４及び、前記横材２２に取付けた板状のゲート部材２５で形成してある。
【００１７】
左右の支持アーム２１の長手方向中間部に固着したブラケット２６が荷台１４の左右両側縦面１９に固着したブラケット２７にピン２８で上下揺動自在にそれぞれ連結してあり、ゲート２０は自重によりピン２８を中心として時計方向に揺動し、荷台１４が図２に実線で示す倒伏した積載姿勢の時にゲート部材２５が荷台１４の底面１８における後部寄り部分１８ｂに当接し、荷台１４の後部を閉塞している。
【００１８】
前記補助アーム２３と車体１０の取付けた左右の支持部材２９とにチェーン等の索条３０が連結してある。この索条３０は荷台１４が積載姿勢の時にはたるんだ状態となり、荷台１４を排出姿勢とすると図２に仮想線で示すように一直線状となってゲート２０が時計方向に揺動せずに積載姿勢の時とほぼ同一の姿勢で支持し、荷台１４の底面１８における後部寄り部分１８ｂとゲート２０のゲート部材２５が上下方向に大きく離隔し、ゲート部材２５が積み荷の排出の邪魔にならないようにしてある。
【００１９】
次にゲート２０の作動を説明する。
荷台１４が積載姿勢の時にはゲート２０は自重で時計方向に揺動してゲート部材２５が荷台１４の底面１８における後部寄り部分１８ｂに当接して荷台１４の後部を閉塞する姿勢となる。
この時、索条３０はたるんでいる。
【００２０】
荷台１４を排出姿勢に揺動するとゲート２０が荷台１４とともにヒンジ１５を中心として後方に移動すると共に、ゲート部材２５が底面１８から離れるので、ゲート２０は自重で時計方向に揺動しようとするが、索条３０が緊張してゲート２０を揺動しないように支持し、ゲート２０は前述の閉塞する姿勢とほぼ同一の姿勢に保持される。
【００２１】
【発明の効果】
請求項１に係る発明によれば、荷台１４の底面１８における後部寄り部分１８ｂがほぼ水平で、荷台１４の後部が深いから、積み荷量を増大できる。しかも、積み荷量が増大しても地面より荷台最上部の高さは変らないので、通常の積込機械で積込みが出来る。
また、荷台１４内の積み荷が一度に排出されることがない。
また、積み荷が左右方向に広がって排出されることがない。
また、積み荷の前後バランスが良い。
また、登坂時に積み荷が荷台１４の後部からこぼれ落ちることをゲート２０のゲート部材２５で防止できるし、荷台１４を排出姿勢とした時にゲート２０のゲート部材２５が積み荷の排出の邪魔にならない。しかも、ゲート２０を上下に揺動するシリンダ等の動力源が不要がある。
【図面の簡単な説明】
【図１】従来のダンプトラックの側面図である。
【図２】本発明の実施の形態を示すダンプトラックの側面図である。
【図３】荷台部分の平面図である。
【図４】ゲートの斜視図である。
【符号の説明】
１…車体、５…荷台、７…ホイストシリンダ、９…底面、１０…車体、１４…荷台、１６…ホイストシリンダ、１８…底面、１８ａ…前部寄り部分、１８ｂ…後部寄り部分、２０…ゲート、２１…支持アーム、２２…横材、２４…取付用部材、２５…ゲート部材、２８…ピン、３０…索条。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dump truck for a construction machine that transports earth and sand, rocks, and the like at a civil engineering work site, a crushed stone site, and the like.
[0002]
[Prior art]
FIG. 1 shows a known dump truck for a construction machine. A front wheel 2 and a rear wheel 3 are mounted on a vehicle body 1, a driver's cab 4 is mounted on a front portion of the vehicle body 1, and a carrier 5 called a vessel is mounted on a rear portion of the vehicle body 1 by a hinge 6 so as to be vertically swingable. 1, a hoist cylinder 7 is attached.
[0003]
[Problems to be solved by the invention]
The loading platform 5 of the dump truck for construction machines described above is substantially V-shaped at the front vertical surface 8 and the bottom surface 9, and the depth of the loading platform 5 is the most near the front portion where the front vertical surface 8 and the bottom surface 9 intersect. Deep, shallow end.
[0004]
For this reason, the cargo in the bed 5 may spill when climbing a hill.
[0005]
Therefore, an object of the present invention is to provide a dump truck capable of solving the above-mentioned problem.
[0006]
[Means for Solving the Problems]
The present invention relates to a dump truck in which a loading platform 14 is mounted on a vehicle body 10 so as to be able to swing up and down with a hinge 15 over an upright discharge position and an overlaid loading position, and a hoist cylinder 16 is mounted over the loading platform 14 and the vehicle body 10. ,
The bottom surface 18 of the loading platform 14 is formed by a slanted frontward portion 18a and a substantially horizontal rearward portion 18b so that the rear portion is higher than the front portion with respect to the horizontal. And
The mounting member 24 and the gate member 25 form the gate 20, and the mounting member 24 can swing up and down on the carrier 14, and the gate member 25 is moved toward the rear portion 18b on the bottom surface 18 of the carrier 14 when the carrier 14 is in the loading position. , So that it is in a posture to close the rear part of the loading platform 14 by contacting the
The cable 30 is connected to the mounting member 24 and the vehicle body 10, and is supported by the cable 30 so that the gate 20 does not swing by its own weight when the carrier 14 is in the discharging position. A dump truck characterized in that the dump truck is held in a posture.
[0008]
[Operation]
According to the present invention, the rearward portion 18b of the bottom surface 18 of the loading platform 14 is substantially horizontal and the rear portion of the loading platform 14 is deep, so that the load can be increased.
Further, the cargo in the carrier 14 is not discharged at one time.
Also, the cargo is not spread and discharged in the left-right direction.
Also, the balance before and after loading is good.
In addition, it is possible to prevent the load from spilling from the rear portion of the loading platform 14 by the gate member 25 of the gate 20 when climbing a hill, and the gate member 25 of the gate 20 does not hinder the discharging of the cargo when the loading platform 14 is in the discharging position. In addition, there is no need for a power source such as a cylinder that swings the gate 20 up and down.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 2, a front wheel 11 and a rear wheel 12 are mounted on a vehicle body 10, and a cab 13 is mounted on a front portion of the vehicle body 10. A loading bed 14 called a vessel is attached to the rear of the vehicle body 10 so as to be able to swing up and down by a hinge 15, and a hoist cylinder 16 is connected to the loading table 14 and the vehicle body 10.
[0011]
The loading platform 14 is substantially V-shaped with a front vertical surface 17 and a bottom surface 18, and the front vertical surface 17 is inclined forward with respect to the vertical, and the bottom surface 18 is separated from the front part 18 a by a hinge 15. Is inclined with the rear part higher than the front part with respect to the horizontal, and the rear part 18 b is substantially horizontal with the hinge 15 as a boundary.
[0012]
As a result, the depth of the rear portion of the loading platform 14 is increased by the level of the rearward portion 18b that is substantially horizontal, and the load increases accordingly.
[0013]
In addition, when the hoist cylinder 16 is extended to swing the loading platform 14 upward to assume an upright discharge position shown by the phantom line in FIG. 2, the cargo in the portion closer to the rear than the hinge 15 of the loading platform 14 is discharged earlier. When the carrier 14 swings further upward, the cargo in the portion closer to the front than the hinge 15 of the carrier 14 is discharged. Thus, the cargo in the carrier 14 is not discharged at one time.
[0014]
Further, since the rear portion of the loading platform 14 is deep, the left and right vertical surfaces 19 of the loading platform 14 serve as a discharge guide for the load, and the load does not spread in the left-right direction and is not discharged.
[0015]
In addition, since the loading amount of the portion of the loading platform 14 closer to the rear than the hinge 15 and the portion closer to the front than the hinge 15 is almost uniform, the front-rear balance of the loading is good.
[0016]
A gate 20 is attached to the carrier 14. As shown in FIGS. 2, 3, and 4, the gate 20 includes left and right support arms 21, a cross member 22 connected between one ends of the left and right support arms 21 in the longitudinal direction, and the left and right support arms 21. Is formed by an auxiliary member 23 fixed obliquely upward near the other end in the longitudinal direction, a mounting member 24 having a substantially U-shaped planar shape, and a plate-shaped gate member 25 mounted on the cross member 22. .
[0017]
Brackets 26 fixed to the middle portions in the longitudinal direction of the left and right support arms 21 are respectively connected to brackets 27 fixed to the left and right vertical surfaces 19 of the loading platform 14 with pins 28 so as to be vertically swingable. 2, the gate member 25 abuts on the rearward portion 18 b of the bottom surface 18 of the loading platform 14 when the loading platform 14 is in the lying loading position shown by the solid line in FIG. 2, and the rear portion of the loading platform 14 is closed. are doing.
[0018]
A cable 30 such as a chain is connected to the auxiliary arm 23 and left and right support members 29 to which the vehicle body 10 is attached. The cable 30 is slackened when the loading platform 14 is in the loading position, and when the loading platform 14 is in the discharging position, it becomes straight as shown by the imaginary line in FIG. 2 and the gate 20 is loaded without swinging clockwise. It is supported in substantially the same posture as the posture, and the rearward portion 18b of the bottom surface 18 of the loading platform 14 and the gate member 25 of the gate 20 are largely separated in the vertical direction so that the gate member 25 does not obstruct the discharge of the load. It is.
[0019]
Next, the operation of the gate 20 will be described.
When the loading platform 14 is in the loading position, the gate 20 swings clockwise by its own weight, and the gate member 25 comes into contact with the rearward portion 18b on the bottom surface 18 of the loading platform 14 to close the rear portion of the loading platform 14.
At this time, the cable 30 is slack.
[0020]
When the loading platform 14 is swung to the discharge position, the gate 20 moves rearward with the loading platform 14 around the hinge 15 and the gate member 25 moves away from the bottom surface 18, so that the gate 20 attempts to swing clockwise by its own weight. The rope 30 is supported so as not to be swayed by the tension of the rope 30, and the gate 20 is held in substantially the same posture as the above-mentioned closed posture.
[0021]
【The invention's effect】
According to the first aspect of the present invention, the rear portion 18b of the bottom surface 18 of the loading platform 14 is substantially horizontal and the rear portion of the loading platform 14 is deep, so that the amount of cargo can be increased. In addition, since the height of the uppermost portion of the loading platform does not change from the ground even if the loading amount increases, loading can be performed by a normal loading machine.
Further, the cargo in the carrier 14 is not discharged at one time.
Also, the cargo is not spread and discharged in the left-right direction.
Also, the balance before and after loading is good.
In addition, it is possible to prevent the load from spilling from the rear portion of the loading platform 14 by the gate member 25 of the gate 20 when climbing a hill, and the gate member 25 of the gate 20 does not hinder the discharging of the cargo when the loading platform 14 is in the discharging position. In addition, there is no need for a power source such as a cylinder that swings the gate 20 up and down.
[Brief description of the drawings]
FIG. 1 is a side view of a conventional dump truck.
FIG. 2 is a side view of the dump truck showing the embodiment of the present invention.
FIG. 3 is a plan view of a bed portion.
FIG. 4 is a perspective view of a gate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Car body, 5 ... Carrier, 7 ... Hoist cylinder, 9 ... Bottom, 10 ... Car body, 14 ... Carrier, 16 ... Hoist cylinder, 18 ... Bottom, 18a ... Front part, 18b ... Rear part, 20 ... Gate , 21 ... support arm, 22 ... horizontal member, 24 ... mounting member, 25 ... gate member, 28 ... pin, 30 ... cable.

Claims

車体１０に荷台１４を起立した排出姿勢と倒伏した積載姿勢に亘ってヒンジ１５で上下揺動自在に取付け、この荷台１４と車体１０に亘ってホイストシリンダ１６を取付けたダンプトラックにおいて、
前記荷台１４の底面１８を、水平に対して後部が前部よりも高くなるように斜めの前部寄り部分１８ａと、ほぼ水平な後部寄り部分１８ｂで形成して荷台１４の後端部を深くし、
取付用部材２４とゲート部材２５でゲート２０とし、この取付用部材２４を荷台１４に上下揺動自在で、かつ荷台１４が積載姿勢の時にゲート部材２５が荷台１４の底面１８における後部寄り部分１８ｂに当接して荷台１４の後部を閉塞する姿勢となるように取付け、
この取付用部材２４と車体１０に亘って索条３０を連結し、荷台１４が排出姿勢の時にゲート２０が自重で揺動しないように索条３０で支持して前述の閉塞する姿勢とほぼ同一の姿勢に保持するようにしたことを特徴とするダンプトラック。 In a dump truck in which a loading platform 14 is mounted on the vehicle body 10 so as to be able to swing up and down with a hinge 15 over a discharging posture in which the vehicle stands upright and a loading posture in which the vehicle is lying down, and a hoist cylinder 16 is mounted over the loading platform 14 and the vehicle body 10,
The bottom surface 18 of the loading platform 14 is formed by a slanted frontward portion 18a and a substantially horizontal rearward portion 18b so that the rear portion is higher than the front portion with respect to the horizontal. And
The mounting member 24 and the gate member 25 form the gate 20, and the mounting member 24 can swing up and down on the carrier 14, and the gate member 25 is moved toward the rear portion 18b on the bottom surface 18 of the carrier 14 when the carrier 14 is in the loading position. , So that it is in a posture to close the rear part of the loading platform 14 by contacting the
The cable 30 is connected to the mounting member 24 and the vehicle body 10, and is supported by the cable 30 so that the gate 20 does not swing by its own weight when the carrier 14 is in the discharging position. A dump truck characterized by being held in a posture.