JPH0443398Y2 - - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） この考案は、比較的軽量の積載物を運搬する運
搬車の荷台、その中の手動式傾動（ダンプ）機構
付荷台に関し、その傾動操作装置の改良に係わる
ものである。[Detailed description of the invention] (Field of industrial application) This invention relates to a loading platform for a transport vehicle that transports relatively lightweight loads, a loading platform with a manual tilting (dump) mechanism therein, and a tilting operation device for the loading platform. This is related to the improvement of

（従来の技術） 係わる形式の荷台においては、その荷台が傾斜
排出姿勢を保持するためのロツク作動はその姿勢
への移行完了と同時に自動的になるように工夫さ
れているが、荷台を水平姿勢へ移行する際にこの
ロツク作動状態を解除するには荷台が急激に降下
することがないように後部に設けた傾動持上杆を
持つて、同時にロツク作動状態を解除するための
操作をしなければならなかつた。(Prior art) In the related type of loading platform, the locking operation for maintaining the loading platform in the inclined discharge position is automatically activated as soon as the transition to that position is completed, but when the loading platform is held in the horizontal position, In order to release the lock when moving to the top, you must hold the tilting lever provided at the rear to prevent the platform from dropping suddenly, and at the same time perform the operation to release the lock. It was impossible.

（考案が解決しようとする問題点） 従来技術の場合、荷台の姿勢を傾斜排出姿勢か
ら水平姿勢へ移行する際にロツク作動の解除操作
と傾動持上杆を持つことの両者を同時に行うこと
が必要であるので、事故原因につながる恐れがあ
つた。(Problem to be solved by the invention) In the case of the prior art, when the attitude of the loading platform is shifted from the inclined discharge attitude to the horizontal attitude, it is difficult to simultaneously perform both the release operation of the lock operation and the holding of the tilting lifting rod. Since this was necessary, there was a risk that it would lead to an accident.

（問題を解決するための手段） 後部に傾動持上杆を形設せる荷台を機台に、そ
の前側を支点に回動すべく支架させ、該荷台には
その支点より後部側に取付軸を横設し、該取付軸
にはアームの先方に摺動子を形設せる作動体を回
動自在に嵌着し、前記機台には荷台傾動時に前記
摺動子の上下動を規制すべく上、下のガイドレー
ルを略水平に並設し、また、前記取付軸にはバネ
掛け部材を回動可能に嵌着し、該バネ掛け部材と
作動体の先方の間に引張バネを張設し、前記下側
のガイドレールの荷台傾動完了位置における摺動
子の動作位置部位には下方への段差を形成し、そ
して、前記バネ掛け部材にはバネ掛け位置の角度
を切り換え調節する切換レバーを連繋し、而し
て、該切換レバーの操作により前記摺動子が上、
下のガイドレールの一側へ弾接すべく前記アーム
に対する引張バネの張設角度が切り換わるように
構成するものである。(Means for solving the problem) A loading platform with a tilting lifting rod formed at the rear of the machine is supported so that it can rotate about its front side as a fulcrum, and the loading platform has a mounting shaft on the rear side of the fulcrum. An actuating body having a slider formed at the front end of the arm is rotatably fitted on the mounting shaft, and an actuator is mounted on the machine base to restrict the vertical movement of the slider when the loading platform is tilted. Upper and lower guide rails are arranged substantially horizontally, a spring hook member is rotatably fitted to the mounting shaft, and a tension spring is stretched between the spring hook member and the front end of the actuating body. A downward step is formed at the operating position of the slider at the loading platform tilting completion position of the lower guide rail, and the spring hanging member has a switching lever for switching and adjusting the angle of the spring hanging position. , and then, by operating the switching lever, the slider is moved up and down.
The tension spring is configured so that the tension angle of the tension spring relative to the arm is changed so as to come into elastic contact with one side of the lower guide rail.

（作用） 運搬が終了し積載物を荷卸しする際に、切換レ
バーを引張バネの張設角度が下のガイドレールへ
弾接保持されるように操作する。そして、荷台後
部の傾動持上杆を持ち上げて積載物を滑落させ
る。荷台の傾動にともなつて作動体は回動し、摺
動子は下のガイドレールに弾接しながら段差側に
向けて摺動する。荷台上の積載物が滑落する迄荷
台が傾動すると摺動子は引張バネの弾性により段
差へ強制的に落ち込む。この状態に於て傾動持上
杆を離すと、荷台は自重により水平姿勢へ移行し
ようとするが摺動子が段差に突き当りそれ以上荷
台は水平姿勢へ移行できない。荷台を水平姿勢に
移行するには前記切換レバーを元の状態に戻すよ
うに操作する。この操作によつてアームに対する
引張バネの張設角度は変わるが作動体の角度は摺
動子が依然として段差に落ち込んでいるから荷台
の姿勢変化はない。そこで傾動持上杆を若干持ち
上げて荷台を更に傾動すると摺動子と段差との係
合が外れる。そして、引張バネの弾性により摺動
子は上下のガイドレール間に浮き上がり摺動が許
容状態となる。すると、荷台は略自重により水平
姿勢へ移行される。その移行時に摺動子は引張バ
ネの弾性により上のガイドレール弾接しながら元
の位置に向けて摺動する。(Function) When transport is completed and the loaded object is unloaded, the switching lever is operated so that the tensioning angle of the tension spring is held in elastic contact with the lower guide rail. Then, lift the tilting lever at the rear of the loading platform and let the loaded object slide down. The operating body rotates as the loading platform tilts, and the slider slides toward the step side while making elastic contact with the lower guide rail. When the loading platform is tilted until the loaded object on the loading platform slides down, the slider is forced to fall onto the step due to the elasticity of the tension spring. When the tilting support rod is released in this state, the loading platform attempts to shift to a horizontal position due to its own weight, but the slider hits the step and the loading platform cannot shift to the horizontal orientation any further. To shift the loading platform to the horizontal position, the switching lever is operated to return to its original state. This operation changes the tensioning angle of the tension spring with respect to the arm, but the angle of the operating body does not change because the slider is still depressed into the step, so the attitude of the loading platform does not change. Therefore, when the tilting lever is slightly lifted and the loading platform is further tilted, the slider disengages from the step. Then, due to the elasticity of the tension spring, the slider floats between the upper and lower guide rails, allowing sliding. Then, the loading platform is shifted to a horizontal position almost by its own weight. During this transition, the slider slides toward its original position while elastically coming into contact with the upper guide rail due to the elasticity of the tension spring.

（実施例） Ａは、本考案を実施せる運搬車である。１は該
運搬車Ａの機台で、該機台１上には荷台２を装着
する。該荷台２は手動式傾動機構を備える。先
ず、荷台２の後部に傾動持上杆３を形設する。そ
して、荷台２の前側を支点４に回動すべく機台１
に支架させる。該荷台２にはその支点４より後部
側に取付軸５を横設する。該取付軸５には作動体
６を回動自在に嵌着する。該作動体６はアーム６
ａの先端に摺動子６ｂを形設して成る。該摺動子
６ｂは転動ローラで前記アーム６ａに対して回動
自在に軸支して成る。他方、前記機台１には略水
平に上、下のガイドレール７ａ，７ｂを並設す
る。該ガイドレール７ａ，７ｂには前記摺動子６
ｂが係入し、摺動子６ｂの上下動を規制すべく荷
台２傾動時に摺動子６ｂがガイドレール７ａ，７
ｂに沿つて摺動すべく成す。また、前記取付軸５
にはバネ掛け部材８を回動可能に嵌着する。該バ
ネ掛け部材８と作動体６の先方の摺動子６ｂ部位
との間に引張バネ９を張設させる。前記上、下の
ガイドレール７ａ，７ｂのうち、下のガイドレー
ル７ｂには下方への段差７ｂ１を形成する。該段
差７ｂ１の配接位置は、前記荷台２の傾動完了位
置における摺動子６ｂの動作位置部位とする。そ
して、前記バネ掛け部材８にはバネ掛け位置の角
度を切り換え調節する切換レバー１０を連繋す
る。(Example) A is a transport vehicle that can implement the present invention. Reference numeral 1 denotes a machine base of the transport vehicle A, and a loading platform 2 is mounted on the machine base 1. The loading platform 2 is equipped with a manual tilting mechanism. First, the tilting lifting rod 3 is formed at the rear of the loading platform 2. Then, in order to rotate the front side of the loading platform 2 to the fulcrum 4, the machine platform 1
to support it. A mounting shaft 5 is installed laterally on the loading platform 2 on the rear side of the fulcrum 4 thereof. An actuating body 6 is rotatably fitted onto the mounting shaft 5. The actuating body 6 is an arm 6
A slider 6b is formed at the tip of a. The slider 6b is a rolling roller that is rotatably supported on the arm 6a. On the other hand, upper and lower guide rails 7a and 7b are arranged substantially horizontally in parallel to the machine base 1. The slider 6 is attached to the guide rails 7a and 7b.
b engages, and when the loading platform 2 is tilted to restrict the vertical movement of the slider 6b, the slider 6b moves against the guide rails 7a, 7.
b. In addition, the mounting shaft 5
A spring hook member 8 is rotatably fitted to the spring hook member 8. A tension spring 9 is stretched between the spring hanging member 8 and the slider 6b portion on the front side of the actuating body 6. Among the upper and lower guide rails 7a and 7b, a downward step 7b1 is formed in the lower guide rail 7b. The arrangement position of the step 7b1 is the operating position of the slider 6b at the tilting completion position of the loading platform 2. A switching lever 10 for switching and adjusting the angle of the spring hanging position is connected to the spring hanging member 8.

尚、１１は該切換レバー１０の操作移動を規制
するガイド溝１１ａを形成せるガイド板で、１１
ａ１は切換レバー１０とバネ掛け部材８との係合
角度を保持するストツパー溝で、１５は切換レバ
ー１０をストツパー溝１１ａ１側へ弾性付勢する
引張スプリングである。而して、該切換レバー１
０の操作により前記アーム６ａに対する引張バネ
９の張設角度が切り換わるように成す。その切り
換え操作により該引張バネ９の弾性力が前記摺動
子６ｂを上のガイドレール７ａ又は、下のガイド
レール７ｂいずれか一側へ切り換わつて弾接する
ように成す。実施例に於て、１２は運搬車Ａの移
動時における荷台２の跳ね上がりを防止する施錠
装置で、１３はエンジンで、１４は走行用クロー
ラである。 Note that 11 is a guide plate in which a guide groove 11a for regulating the operation movement of the switching lever 10 is formed;
A1 is a stopper groove that maintains the engagement angle between the switching lever 10 and the spring hanging member 8, and 15 is a tension spring that elastically biases the switching lever 10 toward the stopper groove 11a1. Therefore, the switching lever 1
0, the tension angle of the tension spring 9 relative to the arm 6a is changed. By the switching operation, the elastic force of the tension spring 9 switches the slider 6b to either the upper guide rail 7a or the lower guide rail 7b so that it comes into elastic contact with the slider 6b. In the embodiment, 12 is a locking device for preventing the loading platform 2 from jumping up when the transport vehicle A is moved, 13 is an engine, and 14 is a traveling crawler.

尚、実用新案登録請求の範囲の項に図面との対
照を便利にするために符号を記すが、該記入によ
り本考案は添付図面の構造に限定されるものでは
ない。 Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

（効果） 本考案によれば、荷台２を傾斜排出姿勢から水
平姿勢へ移行する際に切換レバー１０を摺動子６
ｂが上のガイドレール７ａへ弾接する方へ操作し
ただけでは依然として摺動子６ｂが段差７ｂ１に
突き当たつた状態で、荷台２が自重により直ちに
姿勢変更することはなく、次に、傾動持上杆３を
若干持ち上げることにより前記状態が引張バネ９
の張力により自動的に解除され、初めて姿勢変更
が許容されるようになるものであるから、作業者
が切換レバー１０と傾動持上杆３の両操作を同時
に行う必要がなく完全に分離され、完全に姿勢変
更することが出来る。(Effects) According to the present invention, the switching lever 10 is moved from the slider 6 when the loading platform 2 is moved from the inclined discharge position to the horizontal position.
If the slider 6b is only operated in the direction in which it comes into elastic contact with the upper guide rail 7a, the slider 6b will still be in contact with the step 7b1, and the loading platform 2 will not change its posture immediately due to its own weight. By slightly lifting the upper rod 3, the above state is changed to the tension spring 9.
Since the tension is automatically released by the tension of the lever and the posture change is allowed for the first time, there is no need for the operator to operate both the switching lever 10 and the tilting upper lever 3 at the same time, and they are completely separated. You can completely change your posture.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案を実施せる運搬車の斜視図で、
第２図は同上要部の側面図で、第３図は同上の荷
台が傾斜排出姿勢時の側面図である。 図面の主な符号の説明、１……機台、２……荷
台、３……傾動持上杆、４……支点、５……取付
軸、６……作動体、６ａ……アーム、６ｂ……摺
動子、７ａ……上のガイドレール、７ｂ……下の
ガイドレール、７ｂ１……段差、８……バネ掛け
部材、９……引張バネ、１０……切換レバー。 Figure 1 is a perspective view of a transport vehicle that can implement the present invention.
FIG. 2 is a side view of the main parts of the same as above, and FIG. 3 is a side view of the same as the above when the loading platform is in an inclined discharge position. Explanation of main symbols in the drawings: 1... Machine base, 2... Loading platform, 3... Tilting lifting rod, 4... Fulcrum, 5... Mounting shaft, 6... Operating body, 6a... Arm, 6b ... Slider, 7a ... Upper guide rail, 7b ... Lower guide rail, 7b1 ... Step, 8 ... Spring hanging member, 9 ... Tension spring, 10 ... Switching lever.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 後部に傾動持上杆を形設せる荷台を機台に、そ
の前側を支点に回動すべく支架させ、該荷台には
その支点より後部側に取付軸を横接し、該取付軸
にはアームの先方に摺動子を形設せる作動体を回
動自在に嵌着し、前記機台には荷台傾動時に前記
摺動子の上下動を規制すべく上、下のガイドレー
ルを略水平に並設し、また、前記取付軸にはバネ
掛け部材を回動可能に嵌着し、該バネ掛け部材と
作動体の先方の間に引張バネを張設し、前記下側
のガイドレールの荷台傾動完了位置における摺動
子の動作位置部位には下方への段差を形成し、そ
して、前記バネ掛け部材バネ掛け位置の角度を切
り換え調節する切換レバーを連繋し、而して、該
切換レバーの操作により前記摺動子が上、下のガ
イドレールの一側へ弾接すべく前記アームに対す
る引張バネの張設角度が切り換わるように構成し
てあることを特徴とする手動式傾動機構付荷台の
傾動操作装置。 A loading platform with a tilting lifting rod formed at the rear is supported on the machine base so that it can rotate about the front side of the loading platform, and a mounting shaft is attached to the loading platform on the rear side of the supporting point, and an arm is attached to the mounting shaft. An actuating body for forming a slider is rotatably fitted on the front side of the machine, and upper and lower guide rails are installed approximately horizontally on the machine platform to restrict the vertical movement of the slider when the platform is tilted. A spring hook member is rotatably fitted to the mounting shaft, and a tension spring is stretched between the spring hook member and the front end of the actuating body, and a loading platform of the lower guide rail is installed in parallel. A downward step is formed at the operating position of the slider at the tilting completion position, and a switching lever is connected to switch and adjust the angle of the spring hanging position of the spring hanging member. A loading platform with a manual tilting mechanism, characterized in that the tensioning angle of the tension spring with respect to the arm is switched so that the slider comes into elastic contact with one side of the upper and lower guide rails by operation. tilting operation device.