JP4817846B2

JP4817846B2 - lift device

Info

Publication number: JP4817846B2
Application number: JP2006000664A
Authority: JP
Inventors: 勇志大橋; 利一日比野; 澄雄伊藤
Original assignee: 大橋鉄工株式会社
Priority date: 2006-01-05
Filing date: 2006-01-05
Publication date: 2011-11-16
Anticipated expiration: 2026-01-05
Also published as: JP2007182279A

Description

本発明は、被搬送物の昇降装置に関する。 The present invention relates to a lifting device for a conveyed object.

従来、被搬送物を上下方向に移動させる昇降装置にあっては、該昇降装置内に収容された空気圧又は油圧式のシリンダーの上部に被搬送物を載置する昇降台を直接接続したり、或いはシリンダーの上部にスプロケットを回動自在に装着すると共に、該スプロケットに掛けたチェーンの一端を昇降台に、下端を昇降装置の下部に固定して、シリンダーの駆動により昇降台を昇降させる様にしているものが見受けられる。 Conventionally, in an elevating device that moves an object to be conveyed in the vertical direction, a lifting platform for placing an object to be conveyed is directly connected to the upper part of a pneumatic or hydraulic cylinder accommodated in the elevating device, Alternatively, a sprocket can be pivotally attached to the upper part of the cylinder, and one end of the chain hung on the sprocket can be fixed to the elevator and the lower end can be fixed to the lower part of the elevator, and the elevator can be raised and lowered by driving the cylinder. You can see what you are doing.

研究開発段階や出願段階で先行技術調査を行っておらず、記載すべき先行技術文献を知りません。 We do not conduct prior art searches at the research and development stage or application stage, and do not know the prior art documents to be described.

しかし、上記昇降装置における前者のものの昇降台の昇降量はシリンダーのストローク分しかなく、後者のものの昇降台の昇降量はシリンダーのストロークの２倍分しかないため、例えばシリンダーが収容された昇降装置の上面まで被搬送物を上昇させることが困難であるなど、解決せねばならない課題があった。 However, since the lifting amount of the former lifting platform in the lifting device is only the cylinder stroke, and the lifting amount of the latter lifting platform is only twice the stroke of the cylinder, for example, the lifting device in which the cylinder is accommodated. There was a problem that had to be solved, for example, it was difficult to raise the object to be conveyed to the upper surface.

本発明は、上記従来技術に基づく、シリンダーの機能以上に被搬送物を昇降させることが出来ない課題に鑑み、ベースに立設した機枠の前面に被搬送物の昇降台を上下動可能に設け、機枠上に被搬送物の載置台板を設け、上記昇降台の後部にリンク杆の前端部を回動可能に取り付け、ベースに立設し、且つ上記載置台板の下方に配置した昇降台の昇降駆動部にリンク杆の中間部を回動可能に取り付け、該リンク杆の上方揺動を規制すると共に下方揺動可能にし、機枠の上部且つ後部にリンク杆の後端部の当接体を設け、上記昇降台を、上記昇降駆動部による上昇と、上記リンク杆の当接体への当接後の下方揺動による上昇により、被搬送物を載置台板上に移載可能な位置まで上昇可能にすることによって、リンク杆の後端部が当接体に当接してから最上昇位置に到達するまでに、リンク杆により昇降台を、リンク杆先端の昇降台への取付部位の昇降駆動部への取付部位に対する上昇量分押し上げて、昇降駆動部による昇降量より多く昇降台を昇降可能にして、上記課題を解決する。 The present invention, the prior art based on, view of the problems can not be elevating the transported object than the function of the cylinder, the lifting platform of the object to be conveyed vertically movably on the front of the machine frame which is erected on the base Provided, a mounting table plate for the object to be transported is provided on the machine frame, a front end portion of the link rod is rotatably attached to the rear portion of the lifting platform, is erected on the base , and is disposed below the mounting table plate. The middle part of the link rod is pivotably attached to the lifting drive unit of the lifting platform to restrict the upward swinging of the link rod and to be able to swing downward, and the rear end of the link rod at the upper and rear part of the machine frame The abutment table is moved on the mounting plate by the lift by the lift drive unit and the downward swing after the link rod contacts the contact body. the raisable to be Rukoto to possible mounting positions, abut the rear end of the link rod is in abutment body From the top to the highest position, the lifting platform is pushed up by the link rod by the amount of elevation of the mounting portion of the mounting portion of the link rod tip to the lifting platform relative to the lifting drive unit, and more than the lifting amount by the lifting drive unit. The above-mentioned problem is solved by making the elevator platform movable.

要するに本発明は、ベースに立設した機枠の前面に被搬送物の昇降台を上下動可能に設け、機枠上に被搬送物の載置台板を設け、上記昇降台の後部にリンク杆の前端部を回動可能に取り付け、ベースに立設し、且つ上記載置台板の下方に配置した昇降台の昇降駆動部にリンク杆の中間部を回動可能に取り付け、該リンク杆の上方揺動を規制すると共に下方揺動可能にし、機枠の上部且つ後部にリンク杆の後端部の当接体を設け、上記昇降台を、上記昇降駆動部による上昇と、上記リンク杆の当接体への当接後の下方揺動による上昇により、被搬送物を載置台板上に移載可能な位置まで上昇可能にしたので、昇降途中において当接体に対しリンク杆の後端部が当接状態であると、リンク杆が昇降台に対し、昇降駆動部への取付部位を略中心として、上昇の場合には下方揺動、下降の場合には上方揺動することで、余分に昇降台を昇降させることが出来、よって昇降駆動部のストロークより多く昇降台を昇降させることが出来る。
又、昇降駆動部を、ベースに立設したシリンダーと、該シリンダーの上部に回動自在に設けた押上体と、該押上体に掛けた吊下線状体とで構成し、該吊下線状体の一端をリンク杆の中間部に回動可能に取り付けると共に、他端をベースに固設したので、かかる昇降駆動部による昇降台の昇降量をシリンダーのストロークの２倍にすることが出来るため、昇降装置のコンパクト化を図ることが出来る等その実用的効果甚だ大である。 In short, the present invention provides an elevator platform for a transported object on the front surface of a machine frame standing on a base so as to be movable up and down , a mounting table plate for the object to be transported on the machine frame, and a link plate at the rear part of the elevator platform. The front end of the link rod is pivotably mounted, and the intermediate portion of the link rod is pivotally mounted on the lifting drive unit of the lifting platform that is erected on the base and disposed below the mounting table plate . The upper swing and the rear of the machine frame are provided with an abutment body at the rear end of the link rod, and the lifting platform is lifted by the lifting drive unit and the link rod Since the object to be transported can be moved up to a position where it can be transferred onto the mounting base plate by raising by the downward swing after coming into contact with the contact body, the rear end of the link rod with respect to the contact body during raising and lowering When the part is in contact, the link rod is approximately centered on the attachment part to the lift drive unit with respect to the lift platform. , In the case of increase by upwardly swinging the case of downward swinging, lowering, it can be extra lift the lifting platform, thus more than the stroke of the elevation drive unit lifting table can be raised and lowered to.
Further, the elevating drive unit is composed of a cylinder erected on the base, a push-up body rotatably provided on the upper part of the cylinder, and a suspended linear body hung on the elevated body, and the suspended linear body Since one end of the shaft is pivotally attached to the middle part of the link rod and the other end is fixed to the base, the lifting amount of the lifting platform by the lifting drive unit can be double the cylinder stroke. Its practical effect is very significant, such as making the lifting device compact.

以下本発明の一実施例を図面に基づいて説明する。
図１は、本発明に係る昇降装置の側面図であり、図２、３は、図１の平面図及び後面図であり、図４、５は、昇降台の最下降位置・最上昇位置を示す要部側面図である。
本発明に係る昇降装置にあっては、主に、ベース１に立設した機枠２の前面に、該機枠２に対し上下動可能に設けた昇降台３と、該昇降台３の両側後部に前端部を回動可能に取り付けた一対のリンク杆４、4aと、該リンク杆４、4aの中間部を回動可能に取り付けて昇降台３を昇降可能にした昇降駆動部５と、機枠２の後部に設けた、リンク杆４、4aの後端部の当接体６、6aとで構成し、上記リンク杆４、4aは、上方揺動を規制すると共に下方揺動を可能にする様に昇降台３に取り付けられている。
以降、具体的に説明する。 An embodiment of the present invention will be described below with reference to the drawings.
1 is a side view of a lifting device according to the present invention, FIGS. 2 and 3 are a plan view and a rear view of FIG. 1, and FIGS. 4 and 5 are the lowest and highest positions of the lifting platform. It is a principal part side view shown.
In the lifting device according to the present invention, mainly a lifting platform 3 provided on the front surface of the machine frame 2 standing on the base 1 so as to be movable up and down with respect to the machine frame 2, and both sides of the lifting table 3. A pair of link rods 4, 4 a having a front end portion rotatably attached to the rear portion, and an elevating drive unit 5 in which an intermediate portion of the link rods 4, 4 a is pivotally attached so that the elevator platform 3 can be raised and lowered; It is composed of the contact members 6 and 6a at the rear ends of the link rods 4 and 4a provided at the rear portion of the machine frame 2, and the link rods 4 and 4a can be controlled to swing upward and to swing downward. It is attached to the elevator 3 so that
Hereinafter, a specific description will be given.

上記昇降台３にあっては、図１〜５に示す様に、機枠２に上下動可能に取り付けられた昇降板７の前部に被搬送物Ｗの載置部８を設けて側面視略Ｌ型状とし、昇降板７における載置部８との連結部の側方に下方開口状の切欠部９、9aを形成して、前端部を載置部８の両側部に取り付けたリンク杆４、4aの中間部が切欠部９、9a内を通過する様にすることで、リンク杆４、4aの中間部が切欠部９、9aの上部に当接するため、それ以上の上方揺動が規制されている。
尚、図面上、機枠２の前面にガイドレールを、昇降台３の昇降板７の後面にＬＭガイドを設けて、機枠２に対し昇降台３をスムーズに上下動可能にしている。
又、上記機枠２を門形状とし、該機枠２上に載置台板10を設け、該載置台板10の前端部を機枠２の前面より前方突出させている。 In the elevator 3, as shown in FIGS. 1 to 5, a placing portion 8 for the object to be transported W is provided on the front portion of the elevator plate 7 that is attached to the machine frame 2 so as to be movable up and down. A link having a substantially L shape, formed with notches 9 and 9a having a lower opening on the side of the connecting portion of the elevating plate 7 with the mounting portion 8, and having front ends attached to both sides of the mounting portion 8. By allowing the intermediate part of the flanges 4 and 4a to pass through the notches 9 and 9a, the intermediate part of the link flanges 4 and 4a abuts on the upper parts of the notches 9 and 9a. Is regulated.
In the drawing, a guide rail is provided on the front surface of the machine frame 2 and an LM guide is provided on the rear surface of the elevator plate 7 of the elevator table 3 so that the elevator table 3 can be moved up and down smoothly relative to the machine frame 2.
Further, the machine frame 2 is formed in a gate shape, a mounting table 10 is provided on the machine frame 2, and a front end portion of the mounting table 10 is projected forward from the front surface of the machine frame 2.

昇降駆動部５は、ベース１上にして機枠２の一対の縦枠2a、2b間に立設したシリンダー11と、該シリンダー11の上部両側に設けた一対の押上体12、12a と、該押上体12、12a に掛けた一対の吊下線状体13、13a とで構成し、該吊下線状体13、13a の一端をリンク杆４、4aの中間部に回動可能に取り付けると共に、他端をベース１に固設している。
つまり、シリンダー11のストローク量をＳとすると、吊下線状体13、13a のリンク杆４、4aへの取付端の昇降長さは２Ｓとなる。 The elevating drive unit 5 includes a cylinder 11 erected between a pair of vertical frames 2a and 2b of the machine frame 2 on the base 1, a pair of push-up bodies 12 and 12a provided on both upper sides of the cylinder 11, A pair of suspended linear bodies 13 and 13a hung on the push-up bodies 12 and 12a, and one end of the suspended linear bodies 13 and 13a is rotatably attached to an intermediate portion of the link rods 4 and 4a. The end is fixed to the base 1.
That is, if the stroke amount of the cylinder 11 is S, the ascending / descending length of the attachment ends of the suspended linear bodies 13, 13a to the link rods 4, 4a is 2S.

上記当接体６、6aにあっては、機枠２における横枠2cに固設したブラケット14、14a の後方突端部の下部に設けられ、かかる当接体６、6aの位置を、シリンダー11が上死点に到達する前に、リンク杆４、4aの後端部、具体的にはリンク杆４、4aの後端部に回動可能に設けたローラー15、15a が当接する様に設定している。 The abutting bodies 6 and 6a are provided below the rear projecting ends of the brackets 14 and 14a fixed to the horizontal frame 2c in the machine frame 2, and the positions of the abutting bodies 6 and 6a are set to the cylinder 11 Before reaching the top dead center, it is set so that the rollers 15 and 15a that can be rotated contact the rear ends of the link rods 4 and 4a, specifically the rear ends of the link rods 4 and 4a. is doing.

図面上、押上体12、12a はホイール状で、シリンダー11の上部の取付板16の両端下部に設けたブラケット17、17a の外側に軸着されており、かかる押上体12、12a をプーリー、スプロケット等とし、吊下線状体13、13a を押上体12、12a に対応するロープ、ベルト、チェーン等とし、望ましくは押上体12、12a をシリンダー11に対し回動自在なスプロケットとすると共に、吊下線状体13、13a をチェーンとする。
そして、シリンダー11により押上体12、12a を上昇させることで押上体12、12a が回転して吊下線状体13、13a を巻き上げて、昇降台３が上昇する。
尚、押上体12、12a は、図面上ホイール状に形成されているが、かかる形態に限定せず、要するに押上体12、12a の上部を吊下線状体13、13a が円滑に動く形態、例えば円周面とすれば、かかる押上体12、12a はシリンダー11に対し固設しても良く、この場合、押上体12、12a に対し吊下線状体13、13a が摺接状態となる。 In the drawing, the push-up bodies 12 and 12a are wheel-like and are pivotally attached to the outsides of brackets 17 and 17a provided at both lower portions of the mounting plate 16 at the top of the cylinder 11. The push-up bodies 12 and 12a are connected to pulleys and sprockets. The suspended linear bodies 13, 13a are ropes, belts, chains, etc. corresponding to the push-up bodies 12, 12a, preferably the push-up bodies 12, 12a are sprockets that are rotatable with respect to the cylinder 11, and the suspended lines The state bodies 13 and 13a are chained.
Then, by raising the push-up bodies 12 and 12a by the cylinder 11, the push-up bodies 12 and 12a rotate to wind up the suspended linear bodies 13 and 13a, and the lifting platform 3 rises.
Although the push-up bodies 12 and 12a are formed in a wheel shape in the drawing, the push-up bodies 12 and 12a are not limited to such a form. In the case of a circumferential surface, the push-up bodies 12 and 12a may be fixed to the cylinder 11. In this case, the suspended linear bodies 13 and 13a are in sliding contact with the push-up bodies 12 and 12a.

更に、吊下線状体13、13a の一端をリンク杆４、4aに直接取り付けずに、リンク杆４、4a間に架設した連結杆（図示せず）に取り付けても良く、要するに吊下線状体13、13a に対しリンク杆４、4aを取付部位を中心に回動可能であれば良い。 Further, one end of the suspended linear body 13, 13a may be attached to a connecting rod (not shown) installed between the link rods 4 and 4a without being directly attached to the link rods 4 and 4a. It is only necessary that the link rods 4 and 4a can be rotated around the attachment portion with respect to 13 and 13a.

図面上、昇降駆動部５は、シリンダー11、押上体12、12a 及び吊下線状体13、13a により構成されているが、かかる形態に限定せず、例えば、昇降駆動部５の上部にリンク杆４、4aの中間部を回動可能に直接取り付けても良い。
要するに、昇降台３の後部にリンク杆４、4aの前端部を回動可能に取り付け、ベース１に立設した昇降台３の昇降駆動部５にリンク杆４、4aの中間部を、該リンク杆４、4aが昇降駆動部５に対し回動可能に取り付けられていれば良い。
但し、図示した昇降装置にあっては、変形可能な吊下線状体13、13a にリンク杆４、4aが取り付けられているため、リンク杆４、4aの先端部を中心に揺動してもリンク杆４、4aの吊下線状体13、13a との取付部位が微前後動可能であるが、リンク杆４、4aと昇降台３又は昇降駆動部５の取付部位にある程度の遊びを持たせることで、昇降台３及び昇降駆動部５を確実に作動させる様な構造にして対応させるケースも有り得る。例えば、昇降台３側又はリンク杆４、4aに設けた長孔に軸を挿通させることで対応させる様にしている。 In the drawing, the elevating drive unit 5 is composed of a cylinder 11, push-up bodies 12, 12a, and suspended linear bodies 13, 13a. However, the present invention is not limited to this configuration. You may attach directly the intermediate part of 4 and 4a so that rotation is possible.
In short, the front ends of the link rods 4 and 4a are rotatably attached to the rear portion of the lifting platform 3, and the intermediate portions of the link rods 4 and 4a are connected to the lifting drive unit 5 of the lifting platform 3 standing on the base 1. The hooks 4 and 4a should just be attached with respect to the raising / lowering drive part 5 so that rotation is possible.
However, in the illustrated lifting and lowering device, the link rods 4 and 4a are attached to the deformable suspended linear bodies 13 and 13a. The attachment parts of the link rods 4 and 4a to the suspended linear bodies 13 and 13a can be moved slightly back and forth, but some attachment is given to the attachment parts of the link rods 4 and 4a and the lifting platform 3 or the lifting drive unit 5. Thus, there may be a case in which the lifting platform 3 and the lifting drive unit 5 are configured so as to reliably operate. For example, it is made to respond | correspond by inserting a shaft in the elongate hole provided in the raising-lowering base 3 side or the link rods 4 and 4a.

よって、昇降台３を昇降駆動部５側に直接連結すれば、昇降台３は昇降駆動部５のストローク量だけしか昇降しないが、昇降台３に対し回動可能に取り付けたリンク杆４、4aを介して昇降駆動部５側を連結されることから、昇降駆動部５によりリンク杆４、4aを介して昇降台３を持ち上げることになるが、昇降台３は機枠２側に対しフリーであり、リンク杆４、4aは上昇途中で後端側の上方移動が規制されてしまうために、リンク杆４、4aが昇降台３に対し徐々に下方揺動して、昇降台３が持ち上げられることになるため、昇降台３の昇降量は、昇降駆動部５による昇降ストロークに、リンク杆４、4aの揺動による追加昇降ストローク、即ち昇降台３が、リンク杆４、4aの後端部が当接体６、6aに当接してから最上昇位置に到達するまでに、リンク杆４、4a先端の昇降台３への取付部位の昇降駆動部５への取付部位に対する上昇量分が加わることになる。 Therefore, if the elevator 3 is directly connected to the elevator drive unit 5 side, the elevator 3 can only move up and down by the stroke amount of the elevator driver 5, but the link rods 4 and 4a attached to the elevator 3 so as to be rotatable. Since the elevating drive unit 5 side is connected via the elevating drive unit 5, the elevating drive unit 5 lifts the elevating table 3 via the link rods 4 and 4a, but the elevating table 3 is free with respect to the machine frame 2 side. Yes, since the link rods 4 and 4a are restricted from moving upward on the rear end side while being raised, the link rods 4 and 4a are gradually swung downward with respect to the elevator 3 to lift the elevator 3 Therefore, the lifting amount of the lifting / lowering table 3 depends on the lifting / lowering stroke by the lifting / lowering drive unit 5 and the additional lifting / lowering stroke by the swinging of the link rods 4 and 4a, that is, the lifting table 3 has the rear end of the link rods 4 and 4a Until the highest position is reached after contacting the contact body 6, 6a Increase amount with respect to the mounting portion of the elevation drive unit 5 of the attached site into lifting platform 3 of rods 4,4a tip so that is applied.

尚、図示された昇降装置にあっては、搬送手段Ｔの終端部に設置するものの例示であることから、昇降台３における載置部８を、一対の両側枠体18a 、18b の前端部間に連結枠体18c を設けた平面視略コ字状の台枠18の上部に、台枠18の上部に上記搬送手段Ｔと同様の搬送手段（図面上、ローラーコンベヤ19）を設置したものとしているが、かかる形態に何ら限定せず、図示しないが、載置部８を、被搬送体Ｗを単に載置するだけの機能しかない板状体又は枠状体としても良い。 In the illustrated lifting device, since it is an example of a device installed at the end portion of the conveying means T, the mounting portion 8 in the lifting platform 3 is placed between the front end portions of the pair of side frames 18a, 18b. In the upper part of a substantially U-shaped base frame 18 provided with a connecting frame 18c on the top, a transport means (roller conveyor 19 in the drawing) similar to the transport means T above the base frame 18 is installed. However, the present invention is not limited to such a form, and although not illustrated, the placement unit 8 may be a plate-like body or a frame-like body that has only a function of simply placing the transport target W.

尚、図面上、リンク杆４、4aは、その先端部を載置部８の台枠18における両側枠体18a 、18b の内側面に軸着すると共に、その中間部を昇降板７に形成された切欠部９、9a内を通過する構成であるが、かかる形態に限定せず、図示しないが、先端部を載置部８の外側面に軸着したリンク杆４、4aを昇降板７の外側を通す様にしても良く、この場合リンク杆４、4aの上方揺動規制手段を昇降板７の外側面に設ける様にしている。
つまり、リンク杆４、4aを、上方揺動を規制すると共に下方揺動を可能にする様に昇降台３に取り付ければ良い。 In the drawing, the link rods 4 and 4a are pivotally attached to the inner side surfaces of the side frames 18a and 18b in the frame 18 of the mounting portion 8 and the intermediate portions thereof are formed on the lifting plate 7 in the drawing. However, the present invention is not limited to such a configuration, and although not shown, the link rods 4 and 4a whose end portions are pivotally attached to the outer surface of the mounting portion 8 are connected to the lifting plate 7. In this case, upward swing restricting means for the link rods 4 and 4a are provided on the outer surface of the elevating plate 7.
That is, the link rods 4 and 4a may be attached to the lifting platform 3 so as to restrict upward swing and allow downward swing.

次に本発明に係る昇降装置の作用について説明する。
（１）最下降位置における昇降台３における載置部８上に被搬送物Ｗを載置した後に昇降駆動部５を作動させ、シリンダー11の伸長に伴い押上体12、12a が上昇して、該押上体12、12a に巻き掛けられた吊下線状体13、13a における昇降台３側への固定端側を引き上げて、シリンダー11のストロークの２倍分昇降台３が上昇する。
（２）昇降台３の上昇途中で、リンク杆４、4aの後端部（のローラー15、15a ）が当接体６、6aに当接すると、リンク杆４、4aの後端部（のローラー15、15a ）の上昇が止まることから、昇降台３に対しリンク杆４、4aが下方揺動し、それに伴い昇降台３がリンク杆４、4aの前端部側が昇降駆動部５側への取付部位を中心に上方揺動して、昇降駆動部５による上昇と共に昇降台３が持ち上げられる。
（３）昇降台３が最上昇位置に到達すると昇降台３が停止し、該昇降台３は、シリンダー11のストロークの２倍分に、リンク杆４、4aの昇降駆動部５側への取付部位に対するリンク杆４、4aの昇降台３への取付部位の上昇分を加えた量だけ上昇する。 Next, the operation of the lifting device according to the present invention will be described.
(1) After the article to be conveyed W is placed on the placing portion 8 of the lifting platform 3 at the lowest position, the raising / lowering driving portion 5 is operated, and the push-up bodies 12, 12a are raised as the cylinder 11 is extended. The lifting end 3 is lifted by twice the stroke of the cylinder 11 by pulling up the fixed end side of the suspended linear bodies 13 and 13a wound around the push-up bodies 12 and 12a toward the elevator 3 side.
(2) When the rear ends (the rollers 15 and 15a) of the link rods 4 and 4a come into contact with the contact bodies 6 and 6a during the ascent of the lifting platform 3, the rear ends (of the link rods 4 and 4a) Since the rise of the rollers 15, 15a) stops, the link rods 4, 4a swing downward with respect to the lifting platform 3, and accordingly the lifting platform 3 moves the front end side of the link rods 4, 4a toward the lifting drive unit 5 side. The elevator 3 swings upward around the attachment site, and the elevator 3 is lifted by the elevator drive unit 5.
(3) When the lifting platform 3 reaches the highest position, the lifting platform 3 stops, and the lifting platform 3 is attached to the lifting drive unit 5 side of the link rods 4 and 4a by twice the stroke of the cylinder 11. It rises by an amount obtained by adding the ascending portion of the attachment part to the lifting platform 3 of the link rods 4 and 4a for the part.

図４、５に示す様、機枠２の前面の上下部所定位置にリミットスイッチ20、20a を設けると共に、昇降台３の側部に入力子21を設け、昇降台３の入力子21により下方リミットスイッチ20及び上方リミットスイッチ20a を「ＯＮ」にすることで、昇降台３を最下降位置及び最上昇位置で停止させる様にしている。 As shown in FIGS. 4 and 5, limit switches 20 and 20 a are provided at predetermined positions in the upper and lower portions of the front surface of the machine frame 2, and an input element 21 is provided on the side of the elevator 3. By turning on the limit switch 20 and the upper limit switch 20a, the elevator 3 is stopped at the lowest and highest positions.

図３、５に示す様に、機枠２の前面上部の所定位置に上部ダンパー22を設けると共に、昇降台３の側部に当接板23を設けている。又、図３に示す様に、機枠２の中間部下方寄りの部位に、シリンダー11の上部の取付板16の両端部より側方突出した当接板24、24a が当接する下部ダンパー25、25a を設け、更に取付板16の下面に、最下降位置においてシリンダー11の上端面に当接する下方ストッパー34を設けている。
そして、最上昇位置付近で上部ダンパー22に当接板23が、最下降位置付近で下部ダンパー25、25a に当接板24、24a が夫々当接して緩衝する様にしている。 As shown in FIGS. 3 and 5, an upper damper 22 is provided at a predetermined position on the upper front surface of the machine frame 2, and an abutting plate 23 is provided on a side portion of the lifting platform 3. Further, as shown in FIG. 3, the lower damper 25 with which the contact plates 24, 24a projecting laterally from both ends of the mounting plate 16 on the upper side of the cylinder 11 are in contact with the lower part of the intermediate part of the machine frame 2; 25a is provided, and a lower stopper 34 that contacts the upper end surface of the cylinder 11 at the lowest position is provided on the lower surface of the mounting plate 16.
The contact plate 23 is in contact with the upper damper 22 near the highest position, and the contact plates 24 and 24a are in contact with the lower dampers 25 and 25a in the vicinity of the lowest position so as to cushion each other.

図１、４、７に示す様に、ベース１の前端部に、搬送手段Ｔの終端側に位置する搬入防止ストッパー26を設けると共に、ベース１における昇降台３の下方部位に被搬送物Ｗの搬入確認スイッチ27を設け、搬入防止ストッパー26は搬入確認スイッチ27が被搬送物Ｗにより「ＯＮ」になると上方突出して、搬送手段Ｔ上の次の被搬送物Ｗが昇降台３側に移動させず、下方リミットスイッチ20が「ＯＮ」になると下方没入して、次の被搬送物Ｗを昇降台３側に移動可能にする様にしている。 As shown in FIGS. 1, 4, and 7, a carry-in prevention stopper 26 is provided at the front end portion of the base 1 and is located on the terminal side of the transport means T. A carry-in confirmation switch 27 is provided, and the carry-in prevention stopper 26 protrudes upward when the carry-in confirmation switch 27 is turned “ON” by the conveyed object W, and the next conveyed object W on the conveying means T is moved to the lifting platform 3 side. First, when the lower limit switch 20 is turned “ON”, the lower transfer switch 20 is immersed downward so that the next object to be conveyed W can be moved to the lifting platform 3 side.

図１、２、４〜９に示す様に、昇降台３の前端の両側部に落下防止ストッパー28、28a を揺動可能に設け、該落下防止ストッパー28、28a は、初期姿勢を起立状態として被搬送物Ｗの搬入に伴い傾倒し、被搬送物Ｗの搬入後に起立状態に復帰する様にしている。 As shown in FIGS. 1, 2, and 4-9, drop prevention stoppers 28 and 28a are swingably provided on both sides of the front end of the lifting platform 3, and the fall prevention stoppers 28 and 28a have their initial postures in an upright state. It tilts with the transport of the transported object W, and returns to the standing state after the transported object W is transported.

図７に示す様に、昇降台３の後部にして昇降板７の上部に被搬送物Ｗの前進防止ストッパー29を設け、該前進防止ストッパー29は、取付ブロック30の両側部に一対のガイドシャフト31、31a を貫設すると共に、該ガイドシャフト31、31a の上端部を当接板32の下面両側部に固設し、ガイドシャフト31、31a の間に当接板32の上方付勢手段33、33a を設けている。
そして、図８（ａ）に示す様に、昇降台３の上昇途中に当接板32の上面が載置台板10の前方突出部の下面に当接して当接板32が停止するが、取付ブロック30は昇降台３と共に上昇して上方付勢手段33、33a を圧縮し、最終的に図８（ｂ）に示す様に、最上昇位置における当接板32の上面が、昇降台３における被搬送物Ｗの載置面より下方になり、昇降台３が所定位置まで下降するまで圧縮状態の上方付勢手段33、33a により当接板32の載置台板10への当接状態が維持され、その後離間して初期状態に復帰し、当接板32の上面が昇降台３における被搬送物Ｗの載置面より上方に位置する様にしている。つまり、前進防止ストッパー29自体が昇降台３の上方ストッパーの役割を果たしている。 As shown in FIG. 7, an advance prevention stopper 29 for the conveyed object W is provided at the rear of the elevating table 3 and on the upper part of the elevating plate 7, and the advance prevention stopper 29 is provided with a pair of guide shafts on both sides of the mounting block 30. 31 and 31a are penetrated, and upper end portions of the guide shafts 31 and 31a are fixed to both sides of the lower surface of the contact plate 32, and the upper biasing means 33 of the contact plate 32 is interposed between the guide shafts 31 and 31a. , 33a are provided.
Then, as shown in FIG. 8 (a), the upper surface of the contact plate 32 contacts the lower surface of the front projecting portion of the mounting table 10 while the lift table 3 is being raised, and the contact plate 32 stops. The block 30 ascends together with the elevator 3 and compresses the upper biasing means 33, 33a. Finally, as shown in FIG. 8 (b), the upper surface of the contact plate 32 at the highest position is in the elevator 3 The contact state of the contact plate 32 with the mounting table plate 10 is maintained by the upper biasing means 33 and 33a in a compressed state until the lift table 3 is lowered to a predetermined position. After that, it is separated and returned to the initial state so that the upper surface of the contact plate 32 is positioned above the placement surface of the article W to be transported in the elevator 3. That is, the advance prevention stopper 29 itself serves as an upper stopper of the lifting platform 3.

図９に示す様に、機枠２の上部に、昇降台３の落下防止装置35を設け、昇降台３の側部に、落下防止装置35の前後方向に進退自在な出没体36の当接体37を設け、昇降台３が最上昇位置に到達して上方リミットスイッチ20a が「ＯＮ」になると、落下防止装置35における出没体36が前進突出して、該出没体36の先端部を当接体37の下方に位置させ、昇降台３の下降と同時に、或いは上方リミットスイッチ20a が「ＯＦＦ」になった時点で、落下防止装置35における出没体36が後退没入する様にしている。 As shown in FIG. 9, a drop prevention device 35 for the lifting platform 3 is provided on the upper part of the machine frame 2, and a protruding and retracting body 36 that can be moved back and forth in the front-rear direction of the fall prevention device 35 is provided on the side of the lifting platform 3. When the body 37 is provided, and the upper / lower platform 3 reaches the highest position and the upper limit switch 20a is turned “ON”, the retractable body 36 in the fall prevention device 35 protrudes forward and abuts the tip of the retractable body 36. The retractable body 36 in the fall prevention device 35 is retracted and retracted when the upper limit switch 20a is turned OFF simultaneously with the lowering of the lifting platform 3 or when the upper limit switch 20a is turned off.

本発明に係る昇降装置の側面図である。It is a side view of the raising / lowering apparatus which concerns on this invention. 図１の平面図である。It is a top view of FIG. 図１の後面図である。FIG. 2 is a rear view of FIG. 1. 昇降台を最下降位置とした昇降装置の要部側面図である。It is a principal part side view of the raising / lowering apparatus which made the raising / lowering stand the lowest position. 昇降台を最上昇位置とした昇降装置の要部側面図である。It is a principal part side view of the raising / lowering apparatus which made the raising / lowering stand the highest position. （ａ）はリンク杆の後端部が当接体に当接した状態を示す昇降装置の要部断面図で、（ｂ）は昇降台を最上昇位置とした昇降装置の要部断面図である。(A) is principal part sectional drawing of the raising / lowering apparatus which shows the state which the rear-end part of the link rod contact | abutted to the contact body, (b) is principal part sectional drawing of the raising / lowering apparatus which made the raising / lowering stand the highest position. is there. 昇降台を最下降位置とした昇降装置の要部断面図である。It is principal part sectional drawing of the raising / lowering apparatus which made the raising / lowering stand the lowest position. （ａ）はストッパーにおける当接板が載置台板に当接した状態を示す昇降装置の要部断面図で、（ｂ）は昇降台を最上昇位置とした昇降装置の要部断面図である。(A) is principal part sectional drawing of the raising / lowering apparatus which shows the state which the contact plate in a stopper contact | abutted to the mounting base plate, (b) is principal part sectional drawing of the raising / lowering apparatus which made the raising / lowering base the highest position. . 落下防止装置を設置した昇降装置の要部側面図である。It is a principal part side view of the raising / lowering apparatus which installed the fall prevention apparatus.

符号の説明Explanation of symbols

１ベース
２機枠
３昇降台
４、4a リンク杆
５昇降駆動部
６、6a 当接体
11 シリンダー
12、12a 押上体
13、13a 吊下線状体

DESCRIPTION OF SYMBOLS 1 Base 2 Machine frame 3 Lifting platform 4, 4a Link rod 5 Lifting drive part 6, 6a Contact body
11 cylinders
12, 12a Push-up body
13, 13a Suspended linear body

Claims

ベースに立設した機枠の前面に被搬送物の昇降台を上下動可能に設け、機枠上に被搬送物の載置台板を設け、上記昇降台の後部にリンク杆の前端部を回動可能に取り付け、ベースに立設し、且つ上記載置台板の下方に配置した昇降台の昇降駆動部にリンク杆の中間部を回動可能に取り付け、該リンク杆の上方揺動を規制すると共に下方揺動可能にし、機枠の上部且つ後部にリンク杆の後端部の当接体を設け、上記昇降台を、上記昇降駆動部による上昇と、上記リンク杆の当接体への当接後の下方揺動による上昇により、被搬送物を載置台板上に移載可能な位置まで上昇可能にしたことを特徴とする昇降装置。 A lifting platform for the object to be transported is provided on the front surface of the machine frame standing on the base so that it can be moved up and down , a loading table for the object to be conveyed is provided on the machine frame, and the front end of the link rod is rotated at the rear of the lifting table. Mounted movably, upright on the base and attached to the lifting drive of the lifting platform located below the mounting plate so that the middle portion of the link rod can be pivoted, and the upward swinging of the link rod is restricted In addition, a contact body of the rear end of the link rod is provided at the upper part and rear part of the machine frame, and the lifting platform is moved up by the lifting drive unit and the contact body of the link rod to the contact body. An elevating apparatus characterized in that it can be raised to a position at which a transferred object can be transferred onto a mounting table plate by raising by a downward swing after contact .

昇降駆動部を、ベースに立設したシリンダーと、該シリンダーの上部に回動自在に設けた押上体と、該押上体に掛けた吊下線状体とで構成し、該吊下線状体の一端をリンク杆の中間部に回動可能に取り付けると共に、他端をベースに固設したことを特徴とする請求項１記載の昇降装置。
The elevating drive unit is composed of a cylinder erected on the base, a push-up body pivotably provided on the upper part of the cylinder, and a suspended linear body hung on the elevated body, and one end of the suspended linear body The lifting device according to claim 1, wherein the shaft is rotatably attached to an intermediate portion of the link rod and the other end is fixed to the base.