JPS58218437A - Device for controlling operation of lift provided on damp truck - Google Patents
Device for controlling operation of lift provided on damp truckInfo
- Publication number
- JPS58218437A JPS58218437A JP10259382A JP10259382A JPS58218437A JP S58218437 A JPS58218437 A JP S58218437A JP 10259382 A JP10259382 A JP 10259382A JP 10259382 A JP10259382 A JP 10259382A JP S58218437 A JPS58218437 A JP S58218437A
- Authority
- JP
- Japan
- Prior art keywords
- cargo
- cargo box
- hook
- lift device
- box
- 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)
- Refuse-Collection Vehicles (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Handcart (AREA)
Abstract
Description
【発明の詳細な説明】
未発明は後方にり“ンプ可能となる荷箱にリフト装置を
取付けて、このリフト装置により地上の荷物を荷箱内に
積み込むことができるようにしたものにおいて、リフト
装置を安全にして作ω１コントロールすることができる
ようにしたダンプトラックに装備したリフト装置の作動
コントロール装置に関するものである。[Detailed Description of the Invention] The present invention is a lift device in which a lift device is attached to a cargo box that can be lifted from the rear, and cargo on the ground can be loaded into the cargo box using the lift device. This invention relates to an operation control device for a lift device installed in a dump truck, which allows the device to be operated safely and under ω1 control.
一般にダンプトラックにおいては、荷箱と歪体間に荷箱
を昇降させる油圧シリンダが介在されているが、この油
圧シリンダは荷箱が車体上に降−トする走行姿勢などに
おいてはオイルタンクと連通状となって油圧シリンダに
て荷箱の固縛はできない。Generally, in a dump truck, a hydraulic cylinder is interposed between the cargo box and the distorted body to raise and lower the cargo box, but this hydraulic cylinder communicates with the oil tank when the cargo box is lowered onto the vehicle body. Because of this, it is not possible to secure the cargo box using a hydraulic cylinder.
ところで、とのダンプ荷箱の後端部にリフト装置を取付
け、このリフト装置により荷物を荷箱内に積み込む場合
に、荷物が重いと荷物の自重により荷箱が後方に々゛ン
プ、リフト台上の荷物が落下干る危険性がある。By the way, when a lift device is attached to the rear end of a dump cargo box, and the cargo is loaded into the cargo box using this lift device, if the cargo is heavy, the cargo box will jump backwards due to its own weight, causing the lift platform to There is a risk that the luggage on top will fall and dry.
したがって前記危険を無くするために、前方の荷箱と歪
体間にフックによる固縛装置を設けているが、リフト装
置の作ω１時にはその都度前記固縛装置を操作させる必
要があり、前Ｖ固縛装置の操作忘れがちると、前記した
ようにリフト台の荷物を落下させる問題が戊ってしまう
。Therefore, in order to eliminate the above-mentioned danger, a lashing device using a hook is installed between the front cargo box and the distorted body, but it is necessary to operate the lashing device each time when the lift device is operated ω1. If you tend to forget to operate the lashing device, you will end up with the problem of the cargo falling from the lift platform as described above.
未発明は前記した問題を確実に解消させるもので、その
目的とするところは荷箱の固縛を行うフックの作す１に
関連して作動するりミントスイッチとリフト装置の荷受
台をと昇させる上げスイッチとを組み込んだ回路でもっ
てリフト装置を作動させる電動モータへの通電制御させ
るようにしたものである。The invention is intended to definitely solve the above-mentioned problems, and its purpose is to provide a hook that operates in conjunction with the hook for lashing the cargo box, and a mint switch that operates in connection with the construction of the hook for securing the cargo box and lifting the receiving platform of the lift device. A circuit incorporating a lifting switch controls the energization of the electric motor that operates the lift device.
以下大発明の実施例を図について説明すると、（１）は
車体、＋２１は車体（１）上のサブフレーム、１３）は
サブフレーム（２１上に搭載した荷箱で、この荷箱１ｌ
Ｉｔ
（３）はサブフレーム（２１後部のヒンジ部＋４１を中
心に：。To explain the embodiment of the great invention with reference to the figures, (1) is the vehicle body, +21 is a subframe on the vehicle body (1), and 13) is a cargo box mounted on the subframe (21).
It (3) is the subframe (21 centered around the rear hinge part +41).
して後方にダンプできるよ□うになっている。It is designed so that it can be dumped backwards.
）□
（５）は荷箱（３）の後端部に取付けたリフト装置で、
以ドこのリフト装置（５）について説明すると、荷箱（
３）の主桁（イの後端部に取付ブラケット（６）を設け
、この取付ブラケット（６）には上部を軸（７）にて前
後揺動自在となる連結片（８）が軸支されている。)□ (5) is a lift device attached to the rear end of the cargo box (3).
The following is an explanation of this lift device (5).
A mounting bracket (6) is provided at the rear end of the main girder (3), and this mounting bracket (6) has a connecting piece (8) that is pivotably supported at its upper part on a shaft (7) that can swing back and forth. has been done.
連結片（８）の前記軸支部（７）には上部リンク（９）
の基部が軸（７）と一体・どなって軸支され、又連結片
（８）の下部には下部リンク１１１０基部が軸支（１１
１されている。An upper link (9) is attached to the pivot support (7) of the connecting piece (8).
The base of the lower link 1110 is pivotally supported integrally with the shaft (7), and the base of the lower link 1110 is pivotally supported at the bottom of the connecting piece (8).
1 has been done.
前記上部リンク（９）の先部と前記下部リンクＯｅの先
部は垂直状の取付支柱１１２１に軸支ｔ１３（１４１さ
れ、前２ Ｊ 結ｌ：ｉ′＋ｓ＋、１１ｆ１．Ｆ一対（
７） ＩＩ ：ｙ ’７１９１ （１（ｌ及び前記取付
支柱（１ｚによって平行リンク機構が形成されている。The tip of the upper link (9) and the tip of the lower link Oe are pivotally supported t13 (141) on a vertical mounting column 1121, and a pair of front 2J connections: i'+s+, 11f1.F (
7) II:y '7191 (1(l) and the mounting column (1z) form a parallel link mechanism.
（１５１ｎ ａ ＆Ｅ連結片（８）の萌力揺１ｆ規制す
るとともに連結片（８１を垂直状に保持する取付ブラケ
ット（６）に固着したストッパである。(151n a &E) This is a stopper fixed to the mounting bracket (6) that restricts the force swing 1f of the connecting piece (8) and holds the connecting piece (81) vertically.
（１６）は取付支柱（１２の、下部に回動自在に軸支Ｕ
りされた荷受台で、こめ荷受台１６１は取付支柱（１２
１の上部□
と荷受台！＋６１ （ｌｌＪ面や、中間部間に連結した
屈折自在′：
となる保持杆（１８１に゛て略水平状に保持され、又荷
山：：：、・、。(16) is a mounting column (12, with a rotatable pivot U at the bottom)
The cargo receiving platform 161 is equipped with a mounting post (12
The upper part of 1 □ and the loading platform! +61 (The retaining rod (181) is held in a substantially horizontal position, and the load pile:::,...
受台！Ｊ６１を垂直状に格納したときには荷箱（３）の
後面を覆う。cradle! When the J61 is stored vertically, it covers the rear surface of the cargo box (3).
前記１部リンク（９）を軸支する軸（７）にはアーム０
９が一体状に取付けられ、このアーム四の先部に前記取
付ブラケット（５）に枢支される油圧シリンダ■のピス
トンロッドが連結され、この油圧シリング■の沖縮作動
により前記平行リンク機構を作ＩＩＩＩ＋るとともに荷
受台Ｏｅを昇降させることができる。An arm 0 is attached to the shaft (7) that pivotally supports the one-part link (9).
9 is integrally attached, and the piston rod of the hydraulic cylinder (2), which is pivotally supported on the mounting bracket (5), is connected to the tip of this arm (4), and the parallel link mechanism is activated by the retracting operation of this hydraulic cylinder (2). The loading platform Oe can be raised and lowered at the same time as the loading stage is moved.
１２１）は荷受台ｆ１６１ ？垂直状に格納したとき、
取付支柱じに荷受台ｆ１６１を固縛する固縛手段を示し
、この固縛手段］扁受台Ｑ６）の側面より出没する係止
ピンのと取付支柱（１７Ｊの上端部に穿設されて係止ピ
ンのを係合させる係止孔（２）より構成されている。（
２４１は電動モータ、油田ポンプ、オイルタンク及びパ
ルプを組込んだ油田パワーユニットを示寸。121) is the loading platform f161? When stored vertically,
A lashing means for lashing the load receiving platform f161 is shown on the same mounting column, and this lashing means] is connected to a locking pin that protrudes from the side of the flat pedestal Q6) and a locking pin drilled in the upper end of the mounting column (17J). It consists of a locking hole (2) that engages the locking pin. (
241 indicates the dimensions of an oilfield power unit that incorporates an electric motor, oilfield pump, oil tank, and pulp.
第３図において、価）は荷箱（３）の前端部において基
部をサブフレーム（２１に軸支し、その先７部を荷箱］
３）のロックピン（至）に係＾する荷箱固縛用のフック
を示し、このフック（ハ）は操作レバー罰により揺動操
作される。In Fig. 3, the base part is pivotally supported by the subframe (21) at the front end of the loading box (3), and the 7 parts beyond that are the loading box]
3) shows a hook for securing a cargo box that is engaged with the lock pin (3), and this hook (3) is swing-operated by operating the operating lever.
次に第４図に示す油圧系統について説明中るとｖＤは電
動モータ、（ＰＩＦｉ電動モータ（財）により駆動され
る油圧ポンプで、油圧ポンプｆＰ＋と油圧シリンター■
とけ、途中チェック弁＠を介装した主配管器で連絡され
ている。■は主配管器の途中により分岐してオイルタン
ク（３１）に連絡する補助管で、この補助管（至）には
ソレノイド（ＳＱＬ ）の作動により切換えられるパル
プのが介在され、このパルプ■を左位置に切換えたとき
には油圧ポンプ（Ｐ）からの作動油を油圧シリング■内
へ流入させることができ、又パルプ（３２１を右位置に
切換えたときには油圧シリング■内に流入させた作動油
をオイルタンクｆ３１１へ流出させることができる。Next, while explaining the hydraulic system shown in Fig. 4, vD is a hydraulic pump driven by an electric motor (PIFi electric motor (foundation)), and hydraulic pump fP+ and hydraulic cylinder ■
It is connected by a main piping device with a check valve in the middle. ■ is an auxiliary pipe that branches off in the middle of the main piping device and connects to the oil tank (31), and this auxiliary pipe (to) has a pulp that is switched by the operation of a solenoid (SQL), and this pulp ■ When switched to the left position, the hydraulic oil from the hydraulic pump (P) can flow into the hydraulic sill ■, and when the pulp (321) is switched to the right position, the hydraulic oil flowing into the hydraulic sill ■ can be flowed into the hydraulic sill ■. It can flow out to tank f311.
次に前２パルプ■のソレノイド（ＳＱＬ ）及び電動モ
ータ１１Ｍ１ヲ制御する電気系統を第５図について説明
すると、（３３）はメインスイッチ（ＭＳ）’？−取付
けたメイン回路、（財）は一端をメイン回路■に接続し
、その他端をパルプ■のソレノイド（ＳＯＬ）に接続す
る第１作動回路で、途中には荷受台（１Ｇ＋を下げに操
作子る下げスイッチ（ｓｌ）が介装されている。Next, the electrical system that controls the solenoid (SQL) of the front two pulps (SQL) and the electric motor 11M1 will be explained with reference to FIG. 5. (33) is the main switch (MS)'? - The installed main circuit (Foundation) is the first operating circuit that connects one end to the main circuit ■ and the other end to the pulp ■ solenoid (SOL). A lowering switch (sl) is installed.
（ト）は一端をメイン回路［有］に接続し、その他端を
電ｉｔ）＋モータ（財）に接続する第２作動回路を示し
、この第２作動回路価）には荷受台＋１６１ ？上げに
操作する上げスイッチ（Ｓ２）と、前記フックｃ！５）
の揺動作動と関連して作１１シ、フック（ハ）がロツウ
ピン（イ）に係合して荷箱（３）を固縛したときに接に
切換え作−１されるリミットスイッチ（ＬＳ）とリレー
（Ｒ）により作動するリレースイッチ（ｒｌとがそれぞ
れ直列に介在されている。(g) indicates a second operating circuit whose one end is connected to the main circuit and the other end is connected to the electric appliance + motor. The up switch (S2) that is operated to raise, and the hook c! 5)
In connection with the rocking motion of the 11th limit switch (LS), the limit switch (LS) is switched to 11 when the hook (c) engages with the locking pin (a) to secure the cargo box (3). and a relay switch (rl) operated by a relay (R) are interposed in series.
尚、（３６１はバッテリである。Note that (361 is a battery).
未発明は以上の構成で、今荷受台（１６１ｆｉ？使用し
て荷箱（３）内に荷物を積み込む場合について説明する
と、先ず垂直状の荷受台１１６１ ’ｆ−ホー水平状動
させる。次に下げスイッチＧＳＩ）ｅ接にすると、パル
プ（ηのソレノイド（ＳＱＬ）に通電されるため、バル
ブ（Ωは右位置に切換えられ、これにより油圧シリング
■内の作動油清補助配管■を通って、、′：：：
オイルタンク（３１１へ流出す：ることになるため、油
′１１
子シリング１２［ＩＩ′ｉ縮小するとともに荷受台ａｅ
は降下する。The uninvented structure has the above-mentioned configuration, and now to explain the case of loading cargo into the cargo box (3) using the receiving platform (161fi?), first, the vertical receiving platform 1161'f-ho is moved horizontally.Next, When the lowering switch GSI) is connected to e, the pulp (η solenoid (SQL) is energized, so the valve (Ω) is switched to the right position, which causes the hydraulic oil to pass through the hydraulic oil cleaning auxiliary pipe ■ in the hydraulic cylinder ■, ,'::: Oil tank (311): Oil will flow out to the oil tank (311), so the oil will be
descends.
次に荷受台（頂上に荷物を載せ、荷箱１３）の床面上ま
で上昇させるには、先ず操作レバーのによりフック（２
５）ｆ揺動させ、ロックピン圀）に係合すせる。Next, in order to raise the cargo platform (with the cargo placed on top and the cargo box 13) above the floor, first press the hook (2) on the operating lever.
5) Swing f to engage with the lock pin.
第３図の実線で示す荷箱の固縛状態ではりミントスイッ
チ（ＬＳ）ｒ／′ｉ接となる。When the cargo box is secured as shown by the solid line in FIG. 3, the beam mint switch (LS) is connected to r/'i.
次に上げスイッチ（Ｓ２）を接にすると、先ずリレー（
Ｒ）が作動し、それに対応中るリレースイッチ（ｒｌが
接になるため、バッテリ（至）からの電流は第２作動回
路（ト）を面って電動モータ（財）に流れ、これにより
電動モータ（財）が駆動される。Next, when the up switch (S2) is connected, the relay (
R) is activated, and the corresponding relay switch (rl) is connected, so the current from the battery (to) flows through the second operating circuit (g) to the electric motor, which causes the electric motor to The motor (goods) is driven.
電１モータ（財）が駆動されると、油圧ポンプ（Ｐ）も
駆動されるため、油圧ポンプ（Ｐ）からの作１油は主配
彎■を通って油圧シリンダのへ流入し、これにより油圧
シリンダωが伸長する。油圧シリンダ＋２Ｑ］が伸長す
ると、この油圧シリンダ■に連：１１
結している上部１１ンク（９）は上方回動し、他の丁□
。When the electric motor (goods) is driven, the hydraulic pump (P) is also driven, so the oil from the hydraulic pump (P) flows into the hydraulic cylinder through the main distribution ■. Hydraulic cylinder ω is extended. When the hydraulic cylinder +2Q] extends, the upper link (9) connected to the hydraulic cylinder
.
部リンク叫は常１ｔｅｌｌ：圧縮が作用しているため、
下１ζ
部リンク（１０１に軸支ｔｌｌｌ している連結片（８
）はストッパ（１５１に当接していて、これにより荷受
台口６１は一対のリンクにより水平状にて上昇し、荷物
を荷箱１３＋内に積み込むことができる。Part link shout is always 1 tell: Because compression is working,
The connecting piece (8
) is in contact with the stopper (151), so that the loading platform opening 61 is raised horizontally by the pair of links, and the cargo can be loaded into the loading box 13+.
尚、前記においてフック（ハ）がロックピン（イ）に係
合していない第３図の２点鎖線位置ではリミットスイッ
チ（ＬＳ）は断となっているので、電動モータ（財）が
作動して荷受台（］６１が上昇することがないため、安
全となる。In addition, in the position shown by the two-dot chain line in Figure 3, where the hook (C) is not engaged with the lock pin (A), the limit switch (LS) is disconnected, so the electric motor does not operate. Since the cargo receiving platform ( ) 61 does not rise due to this, it is safe.
次に適宜手段にて荷箱（３）因に積み込まれたパラ物を
輸送する場合には、先ず荷受台（ＩＢを最上昇位置まで
上昇させ、その後荷受台ｕ６１を基部の軸支部ｕ７１を
中心にして垂直状になるまで回動させると、係合ピンｃ
！５１は下方に移動してフック（イ））に係合子る。こ
のとき荷受台ｆｌＧｌ側の係止ビン（２２１を取付支柱
（１′２側の係止孔（２３１に嵌入させれば、荷受台（
１６）の上部は取付支柱（１２１に固定される。Next, when transporting the parallax loaded in the cargo box (3) by an appropriate means, first raise the receiving platform (IB) to the highest position, then move the receiving platform U61 around the pivot support U71 at the base. and rotate it until it becomes vertical, the engagement pin c
! 51 moves downward and engages the hook (a)). At this time, if the locking bin (221 on the loading platform flGl side is inserted into the locking hole (231) on the mounting post (1'2 side), the loading tray (
16) is fixed to the mounting column (121).
前記状態においては荷箱（３）内のパラ物は後面より零
れること々く輸送される。In the above state, the parallaxes in the cargo box (3) are transported without falling out from the rear surface.
次に荷箱（３）囚のパラ物をダンプ排出させるのに荷箱
（３）を後方に傾斜させると、上部リンク（９）は油圧
シリンダ■により定位置に保持さね１、その他の下部リ
ンク（１０１，連結片（８）、取付支柱（１２１及び荷
受台１６１１ｄフリーとｋるため、荷箱１３）の後方傾
斜にともなって特に荷受台（１６１は取付支柱ｆ１２と
一体で、上部リンク（９）先部の軸支部＋１３を中心に
して後方に揺ｌＮｌ７Ｉ移１１シ、これにより荷箱（３
）後面の荷受台（１６１は自動的に開放され、荷箱（３
）内のパラ物はダンプ排出される。Next, when the loading box (3) is tilted backwards to dump the parallaxes in the loading box (3), the upper link (9) is held in place by the hydraulic cylinder ■, and the other lower link As the link (101, connecting piece (8), mounting post (121 and loading platform 1611d are free and the loading box 13) is tilted backwards), the loading platform (161 is integral with the mounting column f12, and the upper link ( 9) Move the cargo box (3) backward by pivoting the front shaft support +13
) The rear loading platform (161) is automatically opened and the loading box (3
) will be dumped.
未発明は以上の如く、荷受台を上昇させる上げスイッチ
と、荷箱を固縛するフックの揺動作動と関連して作＃１
１＋るリミットスイッチとｔ組み込んだ回路でもって電
１１モータを駆動制御するようにしたため、フックによ
る荷箱の固縛が行なわれていない状態では、荷受台を上
昇させることができないため、荷受台により荷物を荷箱
因に積み込むときに、荷箱がダンプして荷受台上の荷物
を落下させることが無く、非常に安全となる。As described above, the uninvented work #1 is related to the lifting switch that raises the loading platform and the rocking motion of the hook that secures the loading box.
Since the electric motor 11 is driven and controlled by a circuit incorporating a limit switch and a circuit built in, the loading platform cannot be raised unless the cargo box is secured with the hook. When loading cargo into a cargo box, the cargo box does not dump and the cargo on the receiving platform does not fall, making it extremely safe.
第１図及び第２図はダンプ荷箱に取付けｆｃ ’Ｉラフ
ト置の側面図、第３図り荷箱を固縛するフック部の部分
側面図、第４図は油圧系統図、第５図は電気系統図であ
る。
（１）は垂体、１３）は荷箱、（５）はリフト装置、（
１６１は荷受台、＋２５１はフック、（Ｓ２）は上げス
イッチ、（ＬＳ）けりミツトスイッチ、（財）は電動モ
ーフ。
出願人 極東開発工業株式会社
第 ２７
第 ３図
第４図Figures 1 and 2 are side views of the fc'I raft installed on the dump cargo box, Figure 3 is a partial side view of the hook part that secures the dump cargo box, Figure 4 is the hydraulic system diagram, and Figure 5 is the It is an electrical system diagram. (1) is the vertical body, 13) is the packing box, (5) is the lift device, (
161 is a loading platform, +251 is a hook, (S2) is a lift switch, (LS) is a kick switch, and (Foundation) is an electric morph. Applicant Kyokuto Kaihatsu Kogyo Co., Ltd. No. 27 Figure 3 Figure 4
Claims (1)
動可能となる荷箱の後端部に荷受台が昇降するリフト装
置を装備し、さらにこのリフト装置の作動を電動モーフ
により駆動される油圧ポンプからの作動油を油圧シリン
ダに流入させることにより行うようにしたダンプトラッ
クに装備したリフト装置において、萌２ヒンジ部より適
宜前方に設げられて前記荷箱と＠記皇体とを固縛するフ
ックの揺動杵１１と関連して作動するリミットスイッチ
と前記荷受台を丘昇させる上げスイッチとを組み込んだ
回路を構成（−１この回路にて前記電動モータを通電制
御するようにしたグンブトラックに装備したリフト装置
の作動コントロール装置。The rear end of the cargo box, which is mounted on the vehicle body and can be tilted backwards around the rear hinge, is equipped with a lift device that raises and lowers the cargo platform, and the operation of this lift device is driven by an electric morph. In a lift device installed on a dump truck that operates by causing hydraulic oil from a hydraulic pump to flow into a hydraulic cylinder, a lift device is provided appropriately in front of the moe 2 hinge part to secure the cargo box and the @kikotai. A circuit incorporating a limit switch that operates in conjunction with the swinging punch 11 of the hook to be tied and a lifting switch that raises the loading platform is configured (-1) This circuit controls the energization of the electric motor. Operation control device for the lift device installed on Gunbu Truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10259382A JPS58218437A (en) | 1982-06-14 | 1982-06-14 | Device for controlling operation of lift provided on damp truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10259382A JPS58218437A (en) | 1982-06-14 | 1982-06-14 | Device for controlling operation of lift provided on damp truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58218437A true JPS58218437A (en) | 1983-12-19 |
| JPS6229257B2 JPS6229257B2 (en) | 1987-06-25 |
Family
ID=14331530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10259382A Granted JPS58218437A (en) | 1982-06-14 | 1982-06-14 | Device for controlling operation of lift provided on damp truck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58218437A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121944U (en) * | 1984-01-28 | 1985-08-17 | 日本リフト株式会社 | Safety lock device for dump truck with cargo handling equipment |
| JPH04334630A (en) * | 1991-05-10 | 1992-11-20 | Kyokuto Kaihatsu Kogyo Co Ltd | Elevator device with safe drive circuit |
| US6354788B1 (en) * | 2000-04-28 | 2002-03-12 | James A. Adams | Dump truck with movably attachable ramp assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01127274A (en) * | 1987-11-11 | 1989-05-19 | Kyoei Denko Kk | Magnetic polishing unit and surface polishing method |
| JP3397309B2 (en) * | 2000-04-27 | 2003-04-14 | 日本フルハーフ株式会社 | Tailgate lifter hydraulic circuit |
-
1982
- 1982-06-14 JP JP10259382A patent/JPS58218437A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121944U (en) * | 1984-01-28 | 1985-08-17 | 日本リフト株式会社 | Safety lock device for dump truck with cargo handling equipment |
| JPH04334630A (en) * | 1991-05-10 | 1992-11-20 | Kyokuto Kaihatsu Kogyo Co Ltd | Elevator device with safe drive circuit |
| US6354788B1 (en) * | 2000-04-28 | 2002-03-12 | James A. Adams | Dump truck with movably attachable ramp assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6229257B2 (en) | 1987-06-25 |
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