JP2008062862A - Load receiving platform lifting device and folding preventive device used for the same - Google Patents

Load receiving platform lifting device and folding preventive device used for the same Download PDF

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JP2008062862A
JP2008062862A JP2006244861A JP2006244861A JP2008062862A JP 2008062862 A JP2008062862 A JP 2008062862A JP 2006244861 A JP2006244861 A JP 2006244861A JP 2006244861 A JP2006244861 A JP 2006244861A JP 2008062862 A JP2008062862 A JP 2008062862A
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load receiving
base
base end
receiving base
main body
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Takeshi Furukawa
威 古川
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Shinmaywa Industries Ltd
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Shin Meiva Industry Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a load receiving platform lifting device and a folding preventive device used for the same capable of preventing bending of a load receiving platform without narrowing the effective width of a truck passage of the load receiving platform. <P>SOLUTION: The load receiving platform lifting device comprises the folding type load receiving platform 8 having a load receiving platform base end 30 and a load receiving platform body part 32, and the folding preventive device 50 for preventing folding of the load receiving platform 8. The folding preventive device 50 comprises right and left base end side brackets 51 provided at a lower face rear edge part of the load receiving platform base end 30; right and left body part side brackets 52 provided at a lower face front edge part of the load receiving platform body part 32 to face the right and left base end side brackets 51; right and left latches 53 lockable to the base end side brackets 51 and the facing body part side brackets 52; a rotating shaft 54 provided at the lower face of the load receiving platform 8; right and left link mechanisms 55 connecting the rotating shaft 54 to the right and left latches 53 to convert the rotary motion of the rotating shaft 54 into the linear motion of the latches 53; and an operating lever 56 provided at the rotating shaft 54 so as to be located near the side end of the load receiving platform 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両の荷台に対する荷物の積み卸し作業を支援する荷受台昇降装置及びこれに用いる中折れ防止装置に関する。   The present invention relates to a load receiving table lifting / lowering device for supporting a loading / unloading operation of a load on a loading platform of a vehicle, and an intermediate folding preventing device used therefor.

荷受台昇降装置とは、車両の荷台床面高さと地面高さとの間で荷受台を昇降させ、車両の荷台に対する荷物の積み卸し作業を支援するものである。こうした荷受台昇降装置には様々なものがあるが、例えば荷受台を折り畳んで車両の荷台の下部に格納するタイプのものがある。   The load receiving platform lifting / lowering device lifts and lowers the load receiving platform between the height of the loading platform floor of the vehicle and the height of the ground, and supports loading and unloading work on the loading platform of the vehicle. There are various types of such cargo receiving platform lifting / lowering devices. For example, there is a type in which the cargo receiving platform is folded and stored in the lower part of the vehicle loading platform.

しかし、折り畳み式の荷受台の場合、荷受台を昇降させて荷物を積み卸しするのには良いが、荷台と荷台床面高さ程度のプラットホーム(荷さばき場)に架橋するのに荷受台を用いる場合、荷受台を平面状態に保てない場合が起こり得る。例えば、荷受台の先端をプラットホーム上に接地させてプラットホームと荷台の間に荷受台を掛け渡し、荷受台を架け橋として荷台及びプラットホーム間で台車(車輪付きコンテナを含む)を行き来させる場合、荷受台の折り畳み時に屈曲する部分に荷物の重量が作用して荷受台が折れ曲がり、足場が不安定になる恐れがある。   However, in the case of a foldable cargo cradle, it is good to lift the cargo cradle up and down to load and unload the cargo, but the cargo cradle is used to bridge the platform and the platform (loading area) about the height of the cargo bed floor. In some cases, it may be impossible to keep the receiving platform in a flat state. For example, when the tip of the load receiving platform is grounded on the platform, the load receiving platform is bridged between the platform and the loading platform, and the cart (including the container with wheels) is moved back and forth between the loading platform and the platform as a bridge. There is a possibility that the weight of the load acts on the bent portion when the bag is folded, the load receiving base is bent, and the scaffolding becomes unstable.

そこで、折り畳み可能に連結された荷受台の先部と基部のうち、基部の側部に断面コの字型の規制部材をスライド可能に設け、荷受台の展開時に基部と先部に跨る位置に規制部材をスライドさせ、規制部材によって基部に対する先部の屈曲動作を拘束するように構成したものが既に提唱されている(特許文献1等参照)。   Therefore, among the front part and base part of the cradle connected in a foldable manner, a U-shaped restriction member is slidably provided on the side part of the base part, and at the position straddling the base part and the front part when the cargo cradle is deployed. A configuration in which the regulating member is slid and the bending operation of the tip portion with respect to the base portion is restrained by the regulating member has already been proposed (see Patent Document 1, etc.).

特開2002−240617号公報JP 2002-240617 A

しかしながら、上記従来技術では、荷受台の基部と先部の連結の左右両端部をコの字型の規制部材で抱え込む構成であるため、規制部材の一部が荷受台の上部に張り出し台車が通過し得る領域に突出していた。すなわち、従来のように荷受台の上面に中折れ防止用の規制部材が突出する構造では、荷受台上を通過する台車のキャスタが規制部材に干渉する可能性があり、荷受台の台車通路の有効幅を狭めてしまっていた。   However, in the above prior art, since the left and right ends of the connection between the base and the tip of the load receiving table are held by the U-shaped restriction member, a part of the restriction member is overhanging the upper part of the load receiving stand and the carriage passes. It protruded into a possible area. That is, in the conventional structure in which the restriction member for preventing the folding is projected on the upper surface of the load receiving table, the caster of the carriage passing over the load receiving table may interfere with the restriction member, and the carriage passage of the load receiving table The effective range was narrowed.

本発明は、以上の点に鑑みなされたものであり、その目的は、荷受台の台車通路の有効幅を狭めることなく荷受台の屈曲を防止することができる荷受台昇降装置及びこれに用いる中折れ防止装置を提供することにある。   The present invention has been made in view of the above points, and an object of the present invention is to provide a load receiving platform lifting apparatus capable of preventing the load receiving platform from being bent without reducing the effective width of the cart passage of the load receiving platform, and a medium used for the same. It is in providing a break prevention device.

(1)上記目的を解決するために、本発明は、車両の荷台に対する荷物の積み卸し作業を支援する荷受台昇降装置において、荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台、及び、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置を備え、前記中折れ防止装置は、前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、前記基端部側ブラケット及びそれに対向する本体部側ブラケットに係止可能な左右のラッチと、左右に延在するように前記荷受台の下面に設けられた回転軸と、この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーとを備えたことを特徴とする。   (1) In order to solve the above-described object, the present invention provides a load receiving platform lifting / lowering device for supporting a loading / unloading operation of a load on a vehicle loading platform from a deployed state with respect to the load receiving platform base end and the load receiving platform base end. A load receiving base having a load receiving base main body portion that is pivoted upward and folded, and a folding prevention device that restrains the folding operation of the load receiving base main body portion with respect to the base end portion of the load receiving base and prevents the load receiving base from being bent. The center break prevention device includes left and right base end side brackets provided at the lower rear edge of the load receiving base end portion in each of the left and right regions of the load receiving base, and the left and right base end portions. Left and right main body side brackets provided on the lower front edge of the load receiving base main body portion facing the side bracket, and left and right latches that can be locked to the base end side bracket and the main body side bracket opposite thereto , Extending from side to side A rotating shaft provided on the lower surface of the load receiving base, a left and right link mechanism for connecting the rotating shaft and the left and right latches, and converting the rotational movement of the rotating shaft into a linear movement of the latch; An operating lever is provided on the rotating shaft so as to be positioned in the vicinity of at least one of the left and right ends of the base, and the operating lever rotates the rotating shaft.

(2)上記目的を達成するために、また本発明は、車両の荷台に対する荷物の積み卸し作業を支援する荷受台昇降装置において、前記車両の下部に固定した基部ユニット、荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台、前記荷受台基端部を前記基部ユニットに対して回動可能に連結し、前記荷受台を実質的に水平な姿勢を維持したまま昇降させる昇降駆動部、及び、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置を備え、前記中折れ防止装置は、前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、前記本体部側ブラケットに対して先端部が出し入れされるように前記基端部側ブラケットのそれぞれに摺動可能に設けた左右のラッチと、前記基端部側ブラケットの前側にて左右に延在するように前記荷受台基端部の下面に設けられた回転軸と、この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーとを備えたことを特徴とする。   (2) In order to achieve the above object, the present invention also provides a load receiving platform lifting / lowering device for supporting a loading / unloading operation of a load on a vehicle loading platform, a base unit fixed to the lower portion of the vehicle, a load receiving platform base end, A load receiving base having a load receiving base body which is pivoted upward and folded from the unfolded state with respect to the base of the load receiving base, the base of the load receiving base is rotatably connected to the base unit, and the load receiving base An elevating drive unit that elevates and lowers the table while maintaining a substantially horizontal posture, and a folding prevention that restrains the folding operation of the load receiving body main body from the base of the load receiving table and prevents the load receiving table from being bent And the left and right base end side brackets provided at the lower rear edge of the load receiving base end in each of the left and right sides of the load receiving base, and the left and right base ends. Against the side bracket The left and right main body side brackets provided at the front lower edge of the load receiving base main body portion and the base end side bracket so that the front end portion is inserted into and removed from the main body side bracket. Left and right latches that can be provided, a rotation shaft provided on the lower surface of the base of the load receiving base so as to extend to the left and right on the front side of the base end side bracket, and the rotation shaft and the left and right latches And a left and right link mechanism that converts the rotational motion of the rotational shaft into a linear motion of the latch, and the rotational shaft is disposed at least near one end of the left and right sides of the load receiving table, and the rotation And an operating lever for rotating the shaft.

(3)上記(1)又は(2)において、好ましくは、前記荷受台は、下面の左右両側に前後方向に延びるスチフナを有しており、前記基端部側ブラケット及び前記本体部側ブラケットは、前記スチフナの側部に固定されていることを特徴とする。   (3) In the above (1) or (2), preferably, the load receiving platform has stiffeners extending in the front-rear direction on both right and left sides of the lower surface, and the base end side bracket and the main body side bracket are It is fixed to the side of the stiffener.

(4)上記目的を達成するために、また本発明は、荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台を有する荷受台昇降装置に備えられ、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置において、前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、前記基端部側ブラケット及びそれに対向する本体部側ブラケットに係止可能な左右のラッチと、左右に延在するように前記荷受台の下面に設けられた回転軸と、この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーとを備えたことを特徴とする。   (4) In order to achieve the above object, the present invention also provides a load receiving base having a load receiving base end and a load receiving base main body that is turned upward and folded with respect to the load receiving base end. In the middle folding prevention device that is provided in the cargo receiving platform lifting device and that restrains the folding operation of the cargo receiving body main body portion with respect to the base of the cargo receiving platform and prevents the cargo receiving platform from being folded, the left and right regions of the cargo receiving platform Left and right base end side brackets provided at the rear lower edge portion of the load receiving base end portion, and the left and right base end side brackets provided at the lower front edge portion of the load receiving base body portion. Left and right main body side brackets, left and right latches that can be locked to the base end side bracket and the main body side brackets opposed thereto, and a rotation provided on the lower surface of the load receiving base so as to extend to the left and right Axis and this rotation axis and front Left and right link mechanisms for connecting left and right latches to convert the rotational movement of the rotary shaft into linear movement of the latch, and provided on the rotary shaft so as to be positioned at least near one end of the left and right sides of the load receiving platform. And an operating lever for rotating the rotating shaft.

(5)上記目的を達成するために、また本発明は、荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台を有する荷受台昇降装置に備えられ、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置において、前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、前記本体部側ブラケットに対して先端部が出し入れされるように前記基端部側ブラケットのそれぞれに摺動可能に設けた左右のラッチと、前記基端部側ブラケットの前側にて左右に延在するように前記荷受台基端部の下面に設けられた回転軸と、この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーとを備えたことを特徴とする。   (5) In order to achieve the above object, the present invention also provides a load receiving base having a load receiving base base portion and a load receiving base body portion that is pivoted upward and folded from the unfolded state with respect to the load receiving base end portion. In the middle folding prevention device that is provided in the cargo receiving platform lifting device and that restrains the folding operation of the cargo receiving body main body portion with respect to the base of the cargo receiving platform and prevents the cargo receiving platform from being folded, the left and right regions of the cargo receiving platform Left and right base end side brackets provided at the rear lower edge portion of the load receiving base end portion, and the left and right base end side brackets provided at the lower front edge portion of the load receiving base body portion. Left and right main body side brackets, left and right latches slidably provided on each of the base end side brackets so that the front end portion can be inserted into and removed from the main body side bracket, and the base end side Left on the front side of the bracket A rotating shaft provided on the lower surface of the base of the load receiving base so as to extend to the left and right, and connecting the rotating shaft and the left and right latches, and converting the rotational motion of the rotating shaft into a linear motion of the latch And a control lever provided on the rotary shaft so as to be positioned in the vicinity of at least one end of the left and right sides of the load receiving base, and operating the rotary shaft.

本発明によれば、荷受台の台車通路の有効幅を狭めることなく荷受台の屈曲を防止することができる。   ADVANTAGE OF THE INVENTION According to this invention, the bending of a receiving stand can be prevented, without narrowing the effective width | variety of the bogie path of a receiving stand.

以下に図面を用いて本発明の実施の形態を説明する。
図1は本発明の一実施の形態に係る荷受台昇降装置が展開した状態を表す斜視図、図2は荷受台の左半側の下面図、図3及び図4は荷受台の左側面図である。図2〜図4においては荷受台側部のサイドモール及び台車の逸走防止用のキャスタストッパを図示省略している。
以下の説明において、車両の前後左右に対応し、図2中の上・下・左・右に対応する方向を左・右・前・後とする。
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a state in which a load receiving table lifting device according to an embodiment of the present invention is deployed, FIG. 2 is a bottom view of the left half side of the load receiving table, and FIGS. 3 and 4 are left side views of the load receiving table. It is. In FIG. 2 to FIG. 4, a side molding on the side of the cargo receiving table and a caster stopper for preventing the cart from running away are omitted.
In the following description, it corresponds to the front, rear, left and right of the vehicle, and the directions corresponding to the upper, lower, left and right in FIG. 2 are left, right, front and rear.

車両1は、運転席(図示せず)の後部に荷台3を備えた貨物車両である。本実施の形態における荷受台昇降装置100は、荷台3を搭載した車両1の車枠4の後端の下部側に取り付けられ、走行時等には折り畳んで車枠4の下部側に格納(収容)可能なものである。そして、荷台3への荷物の積み卸し作業時には、車枠4の後方側にスライドさせ突出させた荷受台8を地面と荷台3の床面3aの高さとの間を昇降させられるようになっており、作業に応じて荷物や作業者の荷台3への積み卸しを支援する。   The vehicle 1 is a freight vehicle provided with a loading platform 3 at the rear of a driver's seat (not shown). The load receiving platform lifting / lowering device 100 according to the present embodiment is attached to the lower side of the rear end of the vehicle frame 4 of the vehicle 1 on which the load carrier 3 is mounted, and can be folded (stored) in the lower side of the vehicle frame 4 during traveling. It is a thing. During loading and unloading work on the loading platform 3, the loading platform 8 that is slid and protruded rearward of the vehicle frame 4 can be moved up and down between the ground and the height of the floor surface 3 a of the loading platform 3. Assisting loading and unloading of luggage and workers on the loading platform 3 according to work.

荷受台昇降装置100は、車両1の車枠4の後方下部に固定された基部ユニット5、上記荷受台8、及び荷受台8を基部ユニット5に対して昇降させる昇降駆動部9を備えている。   The load receiving table elevating device 100 includes a base unit 5 fixed to the rear lower portion of the vehicle frame 4 of the vehicle 1, the load receiving table 8, and a lifting drive unit 9 that moves the load receiving table 8 up and down with respect to the base unit 5.

上記基部ユニット5は、詳細には図示していないが、荷受台昇降装置100を車枠4の下部に取り付けた取り付け部、取り付け部に吊り下げ支持されたスライドユニット、及びスライドユニットを前後方向にスライドさせるスライドシリンダを備えており、スライドシリンダの伸縮に伴って取り付け部に備えられたガイドレールに沿ってスライドユニットが車両1の前後方向にスライドする構成である。つまり、荷受台8を使用する際や格納する際には、車両1側に固定された取り付け部に対し、スライドユニット、折り畳まれた荷受台8、及び昇降駆動部9が一体となって前後方向に移動するようになっている。   Although not shown in detail, the base unit 5 has an attachment portion in which the load receiving platform lifting device 100 is attached to the lower portion of the vehicle frame 4, a slide unit supported by being suspended by the attachment portion, and a slide unit that slides in the front-rear direction. The slide unit is configured such that the slide unit slides in the front-rear direction of the vehicle 1 along the guide rail provided in the attachment portion as the slide cylinder expands and contracts. That is, when using or storing the load receiving table 8, the slide unit, the folded load receiving table 8, and the lifting drive unit 9 are integrated with the mounting portion fixed to the vehicle 1 side in the front-rear direction. To move to.

上記荷受台8は、昇降駆動部9に支持された荷受台基端部30、及び荷受台基端部30に対しヒンジ31を介して回動可能に連結された荷受台本体部32を備えている。ヒンジ31は、荷受台基端部30及び荷受台本体部32のぞれぞれの上面近傍に両端がピン33,34を介して回動可能に連結されており、荷受台基端部30に対する荷受台本体部32の回動機構がヒンジ31を介する二重関節構造となっている。このような構成により、荷受台本体部32は、図示した展開状態から上方に回動し折り畳まれるようになっている。また、荷受台基端部30及び荷受台本体部32は、展開状態にあるときにヒンジ31の下方位置にて互いのストッパ部35(図4等参照)が当接して姿勢が維持され、展開時には荷受台基端部30と荷受台本体部32の上面が互いに連続し平滑な面を形成する。   The load receiving platform 8 includes a load receiving platform base end portion 30 supported by the elevating drive unit 9 and a load receiving platform main body portion 32 connected to the load receiving platform base end portion 30 through a hinge 31 so as to be rotatable. Yes. Both ends of the hinge 31 are connected to the vicinity of the upper surfaces of the load receiving base end 30 and the load receiving base main body 32 via pins 33 and 34 so that the hinge 31 can rotate relative to the load receiving base 30. The rotation mechanism of the load receiving table main body 32 has a double joint structure through a hinge 31. With such a configuration, the cargo receiving table main body 32 is pivoted upward and folded from the illustrated unfolded state. Further, when the load receiving base base end portion 30 and the load receiving stand main body portion 32 are in the deployed state, their postures are maintained by the mutual contact of the stopper portions 35 (see FIG. 4 and the like) at a position below the hinge 31 so that the posture is maintained. Sometimes the upper surface of the load receiving base end 30 and the upper surface of the load receiving main body 32 are continuous with each other to form a smooth surface.

荷受台本体部32は、左右方向に延びる複数の空洞部36を有する中空の板状部材からなり、後方先端に向かって薄くなるように形成されている。荷受台本体部32の最後方側の空洞部36aは上部が開口しており、この空洞部36aにはキャスタストッパ(図示せず)が取り付けられる。特に図示していないが、キャスタストッパは、ピンを介して空洞部36a内に取り付けられ、回動時にはデッキ面から上方に突出し、荷受台8上の台車の車止めの役割を果たす。   The load receiving table main body 32 is made of a hollow plate-like member having a plurality of hollow portions 36 extending in the left-right direction, and is formed so as to become thinner toward the rear end. The upper part of the cavity 36a on the rearmost side of the load receiving table main body 32 is opened, and a caster stopper (not shown) is attached to the cavity 36a. Although not particularly shown, the caster stopper is mounted in the cavity 36a via a pin, protrudes upward from the deck surface when rotating, and plays a role of stopping the carriage on the load receiving platform 8.

上記昇降駆動部9は、荷受台基端部30を基部ユニット5に対して上下方向に回動可能に連結するアーム40、及びアーム40を上下動させるリフトシリンダ41を備えている。アーム40は前述したスライドユニットに回動可能に取り付けた他のアームとともに平行リンクを構成し、リフトシリンダ41の伸縮に伴って上下に回動し、荷受台8が実質的に水平な姿勢を維持したまま昇降する。   The raising / lowering drive unit 9 includes an arm 40 that connects the load receiving table base end 30 to the base unit 5 so as to be rotatable in the vertical direction, and a lift cylinder 41 that moves the arm 40 up and down. The arm 40 forms a parallel link together with the other arm rotatably attached to the slide unit described above, and rotates up and down as the lift cylinder 41 expands and contracts, so that the load receiving base 8 maintains a substantially horizontal posture. Ascend and descend.

上記の構成及び動作の荷受台昇降装置100の特徴は、荷受台本体部32の荷受台基端部30に対する折り畳み動作を拘束し荷受台8の中折れを防止する中折れ防止装置50の構成にある。   The features of the load receiving platform lifting / lowering device 100 having the above-described configuration and operation are the configuration of the middle break prevention device 50 that restrains the folding operation of the load receiving base main body 32 with respect to the load receiving base proximal end portion 30 and prevents the load receiving stand 8 from being bent. is there.

中折れ防止装置50は、荷受台基端部30の下面後縁部に設けた基端部側ブラケット51、荷受台8の展開時に基端部側ブラケット51に対向するように荷受台本体部32の下面前縁部に設けた本体部側ブラケット52、本体部側ブラケット52に対して先端部が出し入れされるように基端部側ブラケット51に摺動可能に設けたラッチ53を備えている。これら基端部側ブラケット51、本体部側ブラケット52、ラッチ53は、それぞれ荷受台8の左右両側の領域(図2には左側の領域のみ図示)に1つずつ設けられている。基端部側ブラケット51及び本体部側ブラケット52は、荷受台8の下面の左右両側に設けられた前後方向に延びるスチフナ49の側部(左右方向外側を向いた側面と荷受台8の下面の交差する部分)にボルト等によって固定されている。中折れ防止装置50は、全体にスチフナ49の高さに収まるように構成されている。   The middle break prevention device 50 includes a base end side bracket 51 provided at the rear lower edge of the load receiving base end 30 and the load receiving base body 32 so as to face the base end bracket 51 when the load receiving base 8 is unfolded. And a latch 53 provided slidably on the base end side bracket 51 so that the tip end portion can be inserted into and removed from the main body side bracket 52. Each of the base end side bracket 51, the main body side bracket 52, and the latch 53 is provided in each of the left and right regions (only the left region is shown in FIG. 2) of the cargo receiver 8. The base end side bracket 51 and the main body side bracket 52 are provided on the side of the stiffener 49 provided on the left and right sides of the lower surface of the load receiving base 8 (the side surface facing the outer side in the left and right direction and the lower surface of the load receiving base 8). It is fixed with bolts etc. The half-break preventing device 50 is configured to fit within the height of the stiffener 49 as a whole.

中折れ防止装置50はまた、荷受台基端部30の下面に設けた回転軸54、回転軸54と左右のラッチ53を連結する左右のリンク機構55、回転軸54を回転操作する操作レバー56をさらに備えている。回転軸54は、荷受台基端部30の下面に固定した複数の軸受57により、基端部側ブラケット51の前側にて左右に延在する姿勢で取り付けられている。左右のリンク機構55は、回転軸54の外周部に固定されたベルクランク60、及びベルクランク60の先端部とラッチ53の前端部に両端が回転自在に連結されたロッド61をそれぞれ備えている。操作レバー56は、ベルクランク60と概ね同じ角度で回転軸54の外周部に固着されている。本実施の形態では、この操作レバー56は、荷受台8の下面における左側端部近傍に位置するように設けられているが、反対側(荷受台8の下面における右側端部近傍)に設けても良いし、左右両側に設けても良い。   The middle break prevention device 50 also includes a rotating shaft 54 provided on the lower surface of the load receiving base 30, a left and right link mechanism 55 that connects the rotating shaft 54 and the left and right latches 53, and an operation lever 56 that rotates the rotating shaft 54. Is further provided. The rotary shaft 54 is attached in a posture extending left and right on the front side of the base end side bracket 51 by a plurality of bearings 57 fixed to the lower surface of the load receiving base base end portion 30. Each of the left and right link mechanisms 55 includes a bell crank 60 fixed to the outer peripheral portion of the rotating shaft 54 and a rod 61 whose both ends are rotatably connected to the front end portion of the bell crank 60 and the front end portion of the latch 53. . The operation lever 56 is fixed to the outer peripheral portion of the rotating shaft 54 at substantially the same angle as the bell crank 60. In the present embodiment, the operation lever 56 is provided in the vicinity of the left end portion on the lower surface of the load receiving table 8, but is provided on the opposite side (in the vicinity of the right end portion on the lower surface of the load receiving table 8). Alternatively, it may be provided on both the left and right sides.

このような構成により、荷受台8の展開後、中折れ防止装置50のアンロック状態(図2及び図4の状態)から操作レバー56を後方に回動させると、操作レバー56の回動に伴って回転軸54が回転する。回転軸54の回転運動は、左右のリンク機構55によって左右のラッチ53の前後方向の直線運動に変換され、後進する左右のラッチ53の先端部がそれぞれ左右の本体部側ブラケット52に挿入される。この状態のとき、仮に荷受台本体部32を上方に回動させようとしても、荷受台本体部32に固定された本体部側ブラケット52がラッチ53に係止していることにより荷受台本体部32の中折れ動作が拘束される(図3参照)。図3の中折れロック状態から荷受台8を折り畳む場合、操作レバー56を前方に回動させ、ラッチ53を本体部側ブラケット52から引き抜いて荷受台8の中折れロック状態を解く。   With such a configuration, when the operation lever 56 is rotated backward from the unlocked state (the state shown in FIGS. 2 and 4) of the half-fold prevention device 50 after the load receiving platform 8 is deployed, the operation lever 56 is rotated. Accordingly, the rotating shaft 54 rotates. The rotational movement of the rotary shaft 54 is converted into a linear motion in the front-rear direction of the left and right latches 53 by the left and right link mechanisms 55, and the distal ends of the left and right latches 53 that are moved backward are inserted into the left and right main body side brackets 52, respectively. . In this state, even if an attempt is made to rotate the load receiving base main body 32 upward, the main body side bracket 52 fixed to the load receiving base main body 32 is locked to the latch 53, so The middle folding operation of 32 is restrained (see FIG. 3). When the load receiving base 8 is folded from the middle folding lock state of FIG. 3, the operation lever 56 is rotated forward, and the latch 53 is pulled out from the main body side bracket 52 to release the middle folding lock state of the load receiving base 8.

上記した本実施の形態の荷受台昇降装置によれば、中折れ防止装置50により荷受台8の屈曲を防止することができるので、中折れをロックした状態においては荷受台8を確実に平面状態に保つことができる。これにより、荷受台8の足場としての安定性を確保することができ、安全性を向上させることができる。このとき、本実施の形態では、中折れ防止装置50の全ての構成部材が荷受台8の下面に設けられているので、中折れ防止装置50を設けたことによって荷受台8上の台車の通路としての有効幅を一切狭めることがなく、作業者の作業スペース及び台車通路を最大限に確保することで、作業性を向上させることができる。   According to the load receiving table lifting apparatus of the present embodiment described above, the bending break prevention device 50 can prevent the load receiving rack 8 from being bent, so that the load receiving rack 8 is surely in a flat state in a state where the middle break is locked. Can be kept in. Thereby, the stability as a scaffold of the cargo receiving stand 8 can be ensured, and safety can be improved. At this time, in this embodiment, since all the structural members of the middle break prevention device 50 are provided on the lower surface of the load receiving base 8, the passage of the carriage on the load receiving base 8 by providing the middle break prevention device 50. The workability can be improved by ensuring the worker's working space and the carriage path to the maximum without reducing the effective width of the operator.

また、中折れ防止装置50の操作レバー56は荷受台8の幅方向外側近傍に配置されており、荷受台8の左右いずれかの側で操作レバー56を操作するのみで左右両側のラッチ53が連動するので、操作性も極めて良好である。例えば、車両1の荷台3の床面3aと図示しないプラットホーム(荷さばき場)との間に荷受台8を架け、プラットホームと荷台3との架け橋として荷受台8を利用する場合、適度な高さにリフトアップされた荷受台8の側部に臨む操作レバー56は地上に立つ作業者にとって無理のない体勢で操作し易い位置にあり、しかも左右のラッチ53が連動するので一方のラッチをロックした後で反対側に回り込んでもう一方のラッチをロックしたり、或いは二人で左右のラッチをロックしたりする必要がない。また、この連動構造により左右両側のラッチ53のロック/アンロック状態を確実に切り替えることができるので、片方をロックし忘れたり片方のロックを解き忘れたりすることがない点も、安全性に寄与する。   Further, the operation lever 56 of the half-break prevention device 50 is disposed in the vicinity of the outer side in the width direction of the load receiving table 8, and the latches 53 on both the left and right sides can be operated only by operating the operation lever 56 on either the left or right side of the load receiving table 8. Since it is linked, the operability is very good. For example, when a load receiving platform 8 is built between a floor surface 3a of the loading platform 3 of the vehicle 1 and a platform (loading site) (not shown) and the platform 10 is used as a bridge between the platform and the loading platform 3, the height of the loading platform 8 is set to an appropriate height. The operation lever 56 facing the side of the lifted load receiving platform 8 is in a position where it is easy to operate with an unreasonable posture for an operator standing on the ground, and the left and right latches 53 are interlocked so that one latch is locked. There is no need to go to the opposite side to lock the other latch, or to lock the left and right latches by two people. In addition, this interlocking structure can reliably switch the locked / unlocked state of the latches 53 on both the left and right sides, so that one can never forget to lock or forget to unlock one. To do.

なお、以上において、荷受台基端部30側にラッチ53、回転軸54、リンク機構55、操作レバー56を設けた場合を例示したが、これらを荷受台本体部32側に設け、荷受台本体部32側からラッチ53を荷受台基端部30側のブラケットに係止させる構成とすることも考えられる。また、2つ折りの荷受台を有する荷受台昇降装置に本発明を適用した場合を例に挙げて説明したが、3つ折り以上の荷受台を有する荷受台昇降装置にも本発明は適用可能である。例えば、荷受台基端部、荷受台本体部に加え、荷受台本体部の後方に荷受台本体部に対して同じように折れ曲がる荷受台先端部を有する3つ折り型の荷受台昇降装置の場合、荷受台基端部と荷受台本体部の連結部分のみならず、荷受台本体部と荷受台先端部の連結部分にも中折れ防止装置50を設けることもできる。荷受台の中折れ部が増えれば、それだけ左右が連動するロック機構の利便性向上への貢献度も高い。   In the above, the case where the latch 53, the rotating shaft 54, the link mechanism 55, and the operation lever 56 are provided on the load receiving base end 30 side is illustrated, but these are provided on the load receiving main body 32 side, and the load receiving main body It is also conceivable that the latch 53 is locked to the bracket on the load receiving base end portion 30 side from the portion 32 side. Moreover, although the case where the present invention is applied to a load receiving platform lifting apparatus having a two-fold load receiving platform has been described as an example, the present invention is also applicable to a load receiving platform lifting apparatus having a three or more folded load receiving platform. . For example, in the case of a tri-fold type load receiving base lifting device having a load receiving base front end that bends in the same manner with respect to the load receiving base main body at the rear of the load receiving base main body in addition to the base of the load receiving base and the main body of the load receiving base. The middle break prevention device 50 can be provided not only at the connecting portion between the load receiving base end and the load receiving main body, but also at the connecting portion between the load receiving main body and the load receiving tip. Increasing the number of folds in the cargo cradle will increase the degree of convenience in improving the convenience of the locking mechanism that links the left and right.

車両の車枠後部の下部側に収容可能な格納式荷受台昇降装置に本発明を適用した場合を例に挙げて説明したが、中折れ式の荷受台を備えたものであれば、他の方式の荷受台昇降装置にも本発明は適用可能である。荷受台昇降装置には、例えば収容時には荷受台が垂直に起立して車両の荷台の後部側面を構成する一方、作業時には荷受台が水平の状態を保って垂直方向に昇降するタイプのものもある。また、本実施の形態の荷受台昇降装置と同様に平行リンクを介して荷受台を昇降させるものであっても、荷受台を車枠の下部側に収容するのではなく、車両の荷台の後部壁面(後部扉等)に沿って垂直に起立させる収容姿勢を採るものもある。さらに、前述した実施の形態のように折り畳んだ荷受台を車体下部に格納したり、展開状態の荷受台を車両の荷台の後部壁面に沿って垂直に起立させたりすることができるように荷受台昇降装置を構成する等、1台の荷受台昇降装置で場面に応じて異なる複数の荷受台の収容動作をすることができるようにすることも考えられる。こうした荷受台昇降装置に本発明を適用した場合も上記と同様の効果を得ることができる。   The case where the present invention is applied to the retractable load receiving device lifting apparatus that can be accommodated in the lower part of the rear part of the vehicle frame has been described as an example. The present invention can also be applied to other cargo receiving platform lifting devices. For example, there is a type in which the load receiving stand erects vertically during housing to form the rear side surface of the load receiving platform of the vehicle, while the load receiving stand is moved up and down in the vertical direction while maintaining a horizontal state during work. . Further, even if the load receiving platform is lifted and lowered via a parallel link in the same manner as the load receiving platform lifting apparatus of the present embodiment, the rear wall of the vehicle loading platform is not housed in the lower part of the vehicle frame. Some take a stowed posture of standing vertically along the rear door or the like. In addition, the folded cradle can be stored in the lower part of the vehicle body as in the above-described embodiment, and the unfolded cradle can be erected vertically along the rear wall of the cradle of the vehicle. It is also conceivable that a plurality of load receiving units can be accommodated in different manners depending on the situation with a single load receiving table lifting device such as a lifting device. Even when the present invention is applied to such a cargo receiving platform lifting device, the same effect as described above can be obtained.

本発明の一実施の形態に係る荷受台昇降装置の展開した状態を表す斜視図である。It is a perspective view showing the state which the loading platform raising / lowering device which concerns on one embodiment of this invention developed. 本発明の一実施の形態に係る荷受台昇降装置に備えられた荷受台の左半側の下面図である。It is a bottom view of the left half side of the load receiving stand with which the load receiving stand raising / lowering device which concerns on one embodiment of this invention was equipped. 本発明の一実施の形態に係る荷受台昇降装置に備えられた荷受台の左側面図である。It is a left view of the load receiving stand with which the load receiving stand raising / lowering apparatus which concerns on one embodiment of this invention was equipped. 本発明の一実施の形態に係る荷受台昇降装置に備えられた荷受台の左側面図である。It is a left view of the load receiving stand with which the load receiving stand raising / lowering apparatus which concerns on one embodiment of this invention was equipped.

符号の説明Explanation of symbols

1 車両
3 荷台
5 基部ユニット
8 荷受台
9 昇降駆動部
30 荷受台基端部
32 荷受台本体部
49 スチフナ
50 中折れ防止装置
51 基端部側ブラケット
52 本体部側ブラケット
53 ラッチ
54 回転軸
55 リンク機構
56 操作レバー
100 荷受台昇降装置
DESCRIPTION OF SYMBOLS 1 Vehicle 3 Loading platform 5 Base unit 8 Loading platform 9 Lifting drive unit 30 Loading platform base end 32 Loading platform main body 49 Stiffener 50 Middle break prevention device 51 Base end side bracket 52 Main body side bracket 53 Latch 54 Rotating shaft 55 Link Mechanism 56 Operation lever 100 Loading platform lifting device

Claims (5)

車両の荷台に対する荷物の積み卸し作業を支援する荷受台昇降装置において、
荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台、及び、
前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置を備え、
前記中折れ防止装置は、
前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、
これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、
前記基端部側ブラケット及びそれに対向する本体部側ブラケットに係止可能な左右のラッチと、
左右に延在するように前記荷受台の下面に設けられた回転軸と、
この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、
前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーと
を備えたことを特徴とする荷受台昇降装置。
In the loading platform lifting device that supports the loading and unloading work of the cargo on the loading platform of the vehicle,
A load receiving base having a load receiving base base portion and a load receiving base main body portion that is turned upward and folded from the unfolded state with respect to the load receiving base base end, and
A folding prevention device that restrains the folding operation of the load receiving base main body portion with respect to the load receiving base base end portion and prevents the load receiving stand from being bent;
The breakage prevention device is
Left and right base end side brackets provided at the bottom rear edge of the load receiving base end in each of the left and right regions of the load receiving base;
Left and right body part side brackets provided on the lower front edge of the load receiving base body part facing the left and right base end side brackets,
Left and right latches that can be locked to the base end side bracket and the main body side bracket opposite to the base end side bracket,
A rotating shaft provided on the lower surface of the load receiving table so as to extend to the left and right;
A right and left link mechanism that connects the rotary shaft and the left and right latches, and converts the rotary motion of the rotary shaft into the linear motion of the latch;
A load receiving base lifting device, comprising: an operating lever provided on the rotating shaft so as to be positioned in the vicinity of at least one side of the left and right sides of the load receiving base and rotating the rotating shaft.
車両の荷台に対する荷物の積み卸し作業を支援する荷受台昇降装置において、
前記車両の下部に固定した基部ユニット、
荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台、
前記荷受台基端部を前記基部ユニットに対して回動可能に連結し、前記荷受台を実質的に水平な姿勢を維持したまま昇降させる昇降駆動部、及び、
前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置を備え、
前記中折れ防止装置は、
前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、
これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、
前記本体部側ブラケットに対して先端部が出し入れされるように前記基端部側ブラケットのそれぞれに摺動可能に設けた左右のラッチと、
前記基端部側ブラケットの前側にて左右に延在するように前記荷受台基端部の下面に設けられた回転軸と、
この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、
前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーと
を備えたことを特徴とする荷受台昇降装置。
In the loading platform lifting device that supports the loading and unloading work of the cargo on the loading platform of the vehicle,
A base unit fixed to the lower part of the vehicle,
A load receiving base having a load receiving base base part and a load receiving base main body part that is pivoted upward and folded from the unfolded state with respect to the base of the load receiving base;
An elevating drive unit that rotatably connects the load receiving base base portion to the base unit, and moves the load receiving table up and down while maintaining a substantially horizontal posture, and
A folding prevention device that restrains the folding operation of the load receiving base main body portion with respect to the load receiving base base end portion and prevents the load receiving stand from being bent;
The breakage prevention device is
Left and right base end side brackets provided at the bottom rear edge of the load receiving base end in each of the left and right regions of the load receiving base;
Left and right body part side brackets provided on the lower front edge of the load receiving base body part facing the left and right base end side brackets,
Left and right latches slidably provided on each of the base end side brackets so that the front end portion is inserted into and removed from the main body side bracket;
A rotating shaft provided on the lower surface of the load receiving base end so as to extend left and right on the front side of the base end side bracket;
A right and left link mechanism that connects the rotary shaft and the left and right latches, and converts the rotary motion of the rotary shaft into the linear motion of the latch;
A load receiving base lifting device, comprising: an operating lever provided on the rotating shaft so as to be positioned in the vicinity of at least one side of the left and right sides of the load receiving base and rotating the rotating shaft.
請求項1又は2の荷受台昇降装置において、前記荷受台は、下面の左右両側に前後方向に延びるスチフナを有しており、前記基端部側ブラケット及び前記本体部側ブラケットは、前記スチフナの側部に固定されていることを特徴とする荷受台昇降装置。   3. The load receiving platform lifting apparatus according to claim 1 or 2, wherein the load receiving platform has stiffeners extending in the front-rear direction on both right and left sides of the lower surface, and the base end side bracket and the main body side bracket are the stiffeners. A load receiving table lifting device fixed to a side portion. 荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台を有する荷受台昇降装置に備えられ、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置において、
前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、
これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、
前記基端部側ブラケット及びそれに対向する本体部側ブラケットに係止可能な左右のラッチと、
左右に延在するように前記荷受台の下面に設けられた回転軸と、
この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、
前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーと
を備えたことを特徴とする中折れ防止装置。
It is provided in a load receiving base lifting device having a load receiving base having a load receiving base having a load receiving base having a main body and a load receiving base main body that is folded upward from the unfolded state with respect to the base of the load receiving base. In the middle break prevention device that restrains the folding operation to the base end of the load receiving stand and prevents the load receiving stand from being bent,
Left and right base end side brackets provided at the bottom rear edge of the load receiving base end in each of the left and right regions of the load receiving base;
Left and right body part side brackets provided on the lower front edge of the load receiving base body part facing the left and right base end side brackets,
Left and right latches that can be locked to the base end side bracket and the main body side bracket opposite to the base end side bracket,
A rotating shaft provided on the lower surface of the load receiving table so as to extend to the left and right;
A right and left link mechanism that connects the rotary shaft and the left and right latches, and converts the rotary motion of the rotary shaft into the linear motion of the latch;
An anti-bending device comprising: an operation lever provided on the rotating shaft so as to be positioned at least in the vicinity of the left and right end portions of the load receiving table, and operating the rotating shaft.
荷受台基端部及びこの荷受台基端部に対し展開状態から上方に回動して折り畳まれる荷受台本体部を有する荷受台を有する荷受台昇降装置に備えられ、前記荷受台本体部の前記荷受台基端部に対する折り畳み動作を拘束し前記荷受台の中折れを防止する中折れ防止装置において、
前記荷受台の左右両側の領域のそれぞれにおいて前記荷受台基端部の下面後縁部に設けた左右の基端部側ブラケットと、
これら左右の基端部側ブラケットに対向して前記荷受台本体部の下面前縁部に設けた左右の本体部側ブラケットと、
前記本体部側ブラケットに対して先端部が出し入れされるように前記基端部側ブラケットのそれぞれに摺動可能に設けた左右のラッチと、
前記基端部側ブラケットの前側にて左右に延在するように前記荷受台基端部の下面に設けられた回転軸と、
この回転軸と前記左右のラッチを連結し、前記回転軸の回転運動を前記ラッチの直線運動に変換する左右のリンク機構と、
前記荷受台の少なくとも左右片側の端部近傍に位置するように前記回転軸に設けられ、前記回転軸を回転操作する操作レバーと
を備えたことを特徴とする中折れ防止装置。
It is provided in a load receiving base lifting device having a load receiving base having a load receiving base having a load receiving base having a main body and a load receiving base main body that is folded upward from the unfolded state with respect to the base of the load receiving base. In the middle break prevention device that restrains the folding operation to the base end of the load receiving stand and prevents the load receiving stand from being bent,
Left and right base end side brackets provided at the bottom rear edge of the load receiving base end in each of the left and right regions of the load receiving base;
Left and right body part side brackets provided on the lower front edge of the load receiving base body part facing the left and right base end side brackets,
Left and right latches slidably provided on each of the base end side brackets so that the front end portion is inserted into and removed from the main body side bracket;
A rotating shaft provided on the lower surface of the load receiving base end so as to extend left and right on the front side of the base end side bracket;
A right and left link mechanism that connects the rotary shaft and the left and right latches, and converts the rotary motion of the rotary shaft into the linear motion of the latch;
An anti-bending device comprising: an operation lever provided on the rotating shaft so as to be positioned at least in the vicinity of the left and right end portions of the load receiving table, and operating the rotating shaft.
JP2006244861A 2006-09-08 2006-09-08 Load receiving platform lifting device and folding preventive device used for the same Pending JP2008062862A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006244861A JP2008062862A (en) 2006-09-08 2006-09-08 Load receiving platform lifting device and folding preventive device used for the same

Related Child Applications (1)

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JP2009005589U Continuation JP3154677U (en) 2009-08-06 2009-08-06 Cargo stand elevating device and anti-breaking device used therefor

Publications (1)

Publication Number Publication Date
JP2008062862A true JP2008062862A (en) 2008-03-21

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