JPH0518388Y2 - - Google Patents
Info
- Publication number
- JPH0518388Y2 JPH0518388Y2 JP1988086629U JP8662988U JPH0518388Y2 JP H0518388 Y2 JPH0518388 Y2 JP H0518388Y2 JP 1988086629 U JP1988086629 U JP 1988086629U JP 8662988 U JP8662988 U JP 8662988U JP H0518388 Y2 JPH0518388 Y2 JP H0518388Y2
- Authority
- JP
- Japan
- Prior art keywords
- compression spring
- rod
- machine base
- shaped link
- slide member
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 claims description 36
- 238000007906 compression Methods 0.000 claims description 36
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000003028 elevating effect Effects 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 5
- 230000032258 transport Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Reciprocating Conveyors (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、主として自動車車体等の重量物を搬
送する搬送台車に搭載される昇降装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an elevating device mounted on a transport vehicle that mainly transports heavy objects such as automobile bodies.
（従来の技術）
従来、車体搬送用の台車に搭載する昇降装置と
して、台車に固定の機台上に昇降テーブルを支持
する１対のＸ形リンク機構を並設し、該各Ｘ形リ
ンク機構を構成する一方のリンクの下端を枢着す
る該機台上のスライド部材を、該各Ｘ形リンク機
構を構成する他方のリンクの下端を枢着する該機
台上の固定支点部に向けて駆動源により進退させ
ることにより該昇降テーブルを昇降させるように
し、更に昇降テーブルの上昇動をアシストすべ
く、機台とスライド部材との間に該スライド部材
を固定支点部側に付勢する引張りばねを張設した
ものは知られている。(Prior Art) Conventionally, as an elevating device mounted on a trolley for transporting a vehicle body, a pair of X-shaped link mechanisms supporting an elevating table are installed in parallel on a platform fixed to the trolley, and each of the X-shaped link mechanisms A slide member on the machine base to which the lower end of one link constituting the X-shaped link mechanism is pivoted is directed toward a fixed fulcrum on the machine base to which the lower end of the other link constituting each X-shaped link mechanism is pivotally coupled. The lifting table is moved up and down by being moved forward and backward by a drive source, and in order to further assist the lifting movement of the lifting table, a tension spring is provided between the machine base and the sliding member to bias the sliding member toward the fixed fulcrum. It is known that the
（考案が解決しようとする課題）
上述の引張りばねは、その両端のフツク部にお
いて機台とスライド部材とに係止するを一般と
し、この場合フツク部に応力が集中するため、車
体のような重量物を昇降するにはフツク部の設計
加工を高精度で行なうことが要求され、特に、ば
ねレートを高くすべく断面角形の線材で引張りば
ねを形成するときはフツク部の捩れが問題となつ
てその設計加工は非常に面倒になり、更に機台や
スライド部材に設けるフツク部の係止部もこれに
合せて高精度に設計加工する必要があり、コスト
アツプにつながる。(Problem to be solved by the invention) The above-mentioned tension spring is generally locked to the machine base and the slide member at the hooks at both ends, and in this case, stress concentrates on the hooks, so it is In order to raise and lower heavy objects, it is necessary to design and process the hook part with high precision, and twisting of the hook part becomes a problem, especially when forming a tension spring from a wire rod with a square cross section in order to increase the spring rate. The design and processing thereof is extremely troublesome, and furthermore, the locking portions of the hook portions provided on the machine base and the slide member must be designed and processed with high precision, leading to an increase in costs.
また、実開昭62−157898号公報により、スライ
ド部材の側端部に固定支点部側にオフセツトして
１対のＸ形リンク機構の並設間隙の外方に張り出
すフランジ部を突設すると共に、機台上に該フラ
ンジ部に対し固定支点部側とは反対側において対
向する圧縮ばねを設け、スライド部材を固定支点
部から離間する方向に後退させて昇降テーブルを
下降させたとき、圧縮ばねがフランジ部により圧
縮され、昇降テーブルの上昇に際し圧縮ばねによ
るアシスト力が得られるようにした昇降装置も知
られているが、このものでは、１対のＸ形リンク
機構の並設間隙の外側に圧縮ばねの配置スペース
を確保しなければならず、装置全体が大型化する
問題がある。 Further, according to Japanese Utility Model Application Publication No. 62-157898, a flange portion is provided at the side end of the slide member to protrude outward from the gap between the pair of X-shaped link mechanisms, which is offset toward the fixed fulcrum portion. At the same time, a compression spring is provided on the machine base to face the flange on the side opposite to the fixed fulcrum, and when the slide member is moved back in the direction away from the fixed fulcrum and the lifting table is lowered, the compression spring is There is also known an elevating device in which the spring is compressed by the flange part, and the assist force from the compression spring is obtained when the elevating table is raised. In this case, it is necessary to secure a space for arranging the compression spring, which causes the problem of increasing the size of the entire device.
この場合、スライド部材に対し固定支点部とは
反対側に位置させてスライド部材の中間部分に対
向するように圧縮ばねを設けて、圧縮ばねの配置
スペースを１対のＸ形リンク機構の並設幅内に収
めることも考えられるが、スライド部材の中間部
分は上記フランジ部のように固定支点部側即ち前
方にオフセツトできないため、スライド部材の後
退端位置で圧縮ばねが該位置より後方に圧縮され
るよう、スライド部材のストローク範囲の後方に
圧縮ばねの配置スペースを確保する必要があり、
装置全体の小型化は図れない。 In this case, a compression spring is provided so as to be located on the opposite side of the sliding member from the fixed fulcrum part and facing the middle part of the sliding member, and the space for arranging the compression spring is used to arrange a pair of X-shaped link mechanisms in parallel. It is conceivable to fit it within the width, but since the middle part of the slide member cannot be offset toward the fixed fulcrum part, that is, forward, like the flange part, the compression spring is compressed rearward from the retreating end position of the slide member. It is necessary to secure a space for placing the compression spring behind the stroke range of the slide member, so that
It is not possible to downsize the entire device.
本考案は、以上の点に鑑み、昇降テーブルの上
昇動を圧縮ばねでアシストし得るようにしたコン
パクトな昇降装置を提供することをその目的とし
ている。 In view of the above points, it is an object of the present invention to provide a compact elevating device in which the upward movement of an elevating table can be assisted by a compression spring.
（課題を解決するための手段）
上記目的を達成すべく、本考案では、機台上に
昇降テーブルを支持する１対のＸ形リンク機構を
並設し、該各Ｘ形リンク機構を構成する一方のリ
ンクの下端を枢着する該機台上のスライド部材
を、該各Ｘ形リンク機構を構成する他方のリンク
の下端を枢着する該機台上の固定支点部に向けて
駆動源により進退させることにより該昇降テーブ
ルを昇降させると共に、該昇降テーブルの上昇動
をアシストする圧縮ばねを設けるものにおいて、
該駆動源を該両Ｘ形リンク機構の並設間隙に配置
すると共に、該並設間隙に該スライド部材から該
機台に固定のガイドブロツクを貫通して該固定支
点部側にのびるロツドを配置し、該圧縮ばねを該
ガイドブロツクと該ロツドの先端のフランジとの
間に介設した。(Means for Solving the Problems) In order to achieve the above object, in the present invention, a pair of X-shaped link mechanisms that support a lifting table are arranged in parallel on a machine base, and each of the X-shaped link mechanisms is configured. The slide member on the machine base, to which the lower end of one link is pivotally attached, is moved by a drive source toward the fixed fulcrum on the machine base, to which the lower end of the other link constituting each X-shaped link mechanism is pivotally attached. In a device that raises and lowers the elevating table by moving forward and backward, and is provided with a compression spring that assists the upward movement of the elevating table,
The driving source is arranged in a gap between the two X-shaped link mechanisms, and a rod extending from the slide member to the fixed fulcrum side through a guide block fixed to the machine base is arranged in the gap. The compression spring was interposed between the guide block and the flange at the tip of the rod.
この場合、前記圧縮ばねを複数個に分割し、前
記ロツドに、該ロツドに対し摺動自在な仕切部材
を介してこれら分割された複数の圧縮ばねを直列
に外挿することが望ましい。 In this case, it is desirable to divide the compression spring into a plurality of pieces, and to extrapolate these divided compression springs in series to the rod via a partition member that is slidable with respect to the rod.
（作用）
スライド部材を固定支点部から離間する方向に
移動して昇降テーブルを下降させると、ロツドの
先端のフランジとガイドブロツクとの距離が短く
なつて両者間に介設した圧縮ばねが圧縮され、ス
ライド部材にロツドを介して該スライド部材を固
定支点部側に押す方向にばね力が作用する。かく
て、スライド部材を駆動源により固定支点部側に
移動して昇降テーブルを上昇させる際、圧縮ばね
によるアシスト力が得られ、駆動源の負荷が軽減
される。(Function) When the slide member is moved away from the fixed fulcrum and the lifting table is lowered, the distance between the flange at the tip of the rod and the guide block becomes shorter, and the compression spring interposed between them is compressed. A spring force acts on the slide member via the rod in a direction that pushes the slide member toward the fixed fulcrum. Thus, when the slide member is moved toward the fixed fulcrum by the drive source to raise the lifting table, an assisting force from the compression spring is obtained, and the load on the drive source is reduced.
そして、本考案では、本来デツドスペースとな
る両Ｘ形リンク機構の並設間隙に駆動源に加えて
圧縮ばねを収納配置でき、並設間隙の外側に圧縮
ばねの配置スペースを確保する必要がなく、装置
全体をコンパクトに構成できる。 In addition, with the present invention, the compression spring can be stored in addition to the drive source in the gap between the two X-shaped link mechanisms, which is originally a dead space, and there is no need to secure a space for arranging the compression spring outside the gap. The entire device can be configured compactly.
ところで、圧縮ばねによる上昇動のアシストス
トロークを長く取るために圧縮ばねを長いものに
すると、圧縮時の座屈により圧縮ばねとロツドと
のこじりを生じ易くなるが、上記の如く圧縮ばね
を複数個に分割して、これら圧縮ばねをロツドに
仕切部材を介して直列に外挿すれば、アシストス
トロークを長く取つて且つばねの座屈を防止で
き、有利である。 By the way, if the compression spring is made long in order to lengthen the assist stroke of the upward motion by the compression spring, the compression spring and the rod are likely to be strained due to buckling during compression. If these compression springs are divided into two and extrapolated in series through a partition member, the assist stroke can be made longer and buckling of the spring can be prevented, which is advantageous.
（実施例）
第１図を参照して、１は自動車車体Ｗを搬送す
る自走式の搬送台車を示し、該台車１の中間部に
設けた機台２にＸ形リンク機構３を介して昇降テ
ーブル４を昇降自在に支持し、該テーブル４上に
車体Ｗを載置するようにした。(Example) Referring to FIG. 1, reference numeral 1 denotes a self-propelled transport vehicle for transporting an automobile body W. An elevating table 4 is supported so as to be movable up and down, and a vehicle body W is placed on the table 4.
該Ｘ形リンク機構３は、第２図示の如く左右１
対に設けられるもので、機台２上に、第３図及び
第４図に示す如く、横方向中央のガイドレール５
に沿つて前後方向に摺動自在なスライド部材６を
設け、該スライド部材６の左右両端部に各Ｘ形リ
ンク機構３を構成する一方のリンク３ａの下端を
枢着し、又該機台２の前端の左右両側部に、第５
図に示す如く、軸受から成る固定支点部７を設け
て、これに各Ｘ形リンク機構３を構成する他方の
リンク３ｂの下端の枢軸３b1を軸支し、更に前記
スライド部材６の中央部にナツトスリーブ６ａを
固設して、該スリーブ６ａに、機台２上に搭載し
たモータから成る駆動源８により正逆転される螺
杆８ａを螺挿し、該螺杆８ａの正逆転により該ス
ライド部材６を前方と後方とに移動して、昇降テ
ーブル４を昇降動作させるようにした。 The X-shaped link mechanism 3 has left and right sides as shown in the second figure.
As shown in FIGS. 3 and 4, a guide rail 5 is installed on the machine base 2 at the center in the lateral direction.
A slide member 6 is provided which is slidable in the front and back direction along the slide member 6, and the lower end of one link 3a constituting each X-shaped link mechanism 3 is pivotally connected to both left and right ends of the slide member 6. There is a fifth mark on both left and right sides of the front end of the
As shown in the figure, a fixed fulcrum part 7 consisting of a bearing is provided, on which a pivot shaft 3b1 at the lower end of the other link 3b constituting each X-shaped link mechanism 3 is pivotally supported, and furthermore, the central part of the slide member 6 A nut sleeve 6a is fixed to the sleeve 6a, and a screw rod 8a which is rotated forward and backward by a drive source 8 comprising a motor mounted on the machine base 2 is screwed into the sleeve 6a. is moved forward and backward, and the lifting table 4 is moved up and down.
図中９は螺杆８ａを軸支する軸受、１０は螺杆
８ａの回転を検出するエンコーダを示す。 In the figure, reference numeral 9 denotes a bearing that supports the screw rod 8a, and 10 denotes an encoder that detects the rotation of the screw rod 8a.
前記スライド部材６には、前記固定支点部７の
側即ち前方にのびる左右１対のロツド１１，１１
が取付けられ、機台２上に該各ロツド１１を挿通
する左右１対のガイドブロツク１２，１２を固設
して、該各ガイドブロツク１２と該各ロツド１１
の先端のフランジ１１ａとの間に圧縮ばね１３を
介設し、該ばね１３により該各ロツド１１を介し
てスライド部材６を前方に付勢するようにし、こ
のばね力で昇降テーブル４の上昇動に際してのア
シスト力を得られるようにした。 The slide member 6 has a pair of left and right rods 11, 11 extending toward the side of the fixed fulcrum 7, that is, toward the front.
is attached, and a pair of left and right guide blocks 12, 12 through which each rod 11 is inserted is fixed on the machine base 2, and each guide block 12 and each rod 11 are
A compression spring 13 is interposed between the slide member 6 and the flange 11a at the tip of the slide member 6, and the spring 13 urges the slide member 6 forward through each rod 11. It has been made possible to obtain assist power when
該圧縮ばね１３は、ばねレートを高くして大き
なアシスト力を得られるように、第６図に示す如
く、断面角形の線材で形成されており、前記ロツ
ド１１に、該ロツド１１に対し摺動自在な仕切部
材１４を介して圧縮ばね１３の複数個を直列に外
挿した。 The compression spring 13 is made of a wire rod with a rectangular cross section, as shown in FIG. 6, in order to increase the spring rate and obtain a large assist force. A plurality of compression springs 13 were extrapolated in series via a flexible partition member 14.
又、本実施例では、機台２と昇降テーブル４と
の間に前後各１対の計４個のクツシヨン部材１５
を介設した。 In addition, in this embodiment, a total of four cushion members 15, one pair each in the front and rear, are provided between the machine base 2 and the lifting table 4.
was intervened.
該クツシヨン部材１５は、第７図に示す如く、
機台２に固定される下端のフランジ１５a1を有す
るスリーブ１５ａに、昇降テーブル４を受ける上
端のフランジ１５b1を有するロツド１５ｂを上下
動自在に嵌挿し、これらフランジ１５a1，１５b1
間に該スリーブ１５ａに摺動自在に外嵌した仕切
部材１５ｃを介して圧縮ばね１５ｄを上下２段に
介設して成るもので、昇降テーブル４が下降した
とき、これが上端のフランジ１５b1に当接して圧
縮ばね１５ｄを圧縮し、該テーブル４の上昇動に
際し該圧縮ばね１５ｄのばね力によるアシスト力
が得られるようにした。 The cushion member 15, as shown in FIG.
A rod 15b having a flange 15b 1 at the upper end that receives the lifting table 4 is fitted into a sleeve 15a having a flange 15a 1 at the lower end fixed to the machine base 2 so as to be movable up and down, and these flanges 15a 1 , 15b 1
Compression springs 15d are interposed in two stages, upper and lower, through a partition member 15c that is slidably fitted onto the sleeve 15a. The abutment compresses the compression spring 15d, so that when the table 4 moves upward, an assisting force is obtained by the spring force of the compression spring 15d.
（考案の効果）
以上の説明から明らかなように、請求項１の考
案によれば、圧縮ばねにより昇降テーブルの上昇
動に対するアシスト力を得るようにしたため、引
張りばねを用いる従来技術と異なりばねの端部や
その受部の加工が容易になり、且つ１対のＸ形リ
ンク機構の並設間隙に駆動源を加えて圧縮ばねを
収納配置でき、昇降装置を安価に且つコンパクト
に得られる。(Effect of the invention) As is clear from the above description, according to the invention of claim 1, the assist force for the upward movement of the lifting table is obtained by the compression spring. Processing of the end portions and their receiving portions is facilitated, a driving source can be added to the gap between the pair of X-shaped link mechanisms, and the compression spring can be housed, and the lifting device can be obtained at a low cost and in a compact size.
更に、請求項２の考案によれば、昇降テーブル
の上昇動のアシストストロークを長く取つて、駆
動源のより一層の小型化を図れると共に、圧縮ば
ねの座屈によるロツドとのこじりを防止して耐久
性を向上できる。 Furthermore, according to the second aspect of the present invention, the assist stroke for the upward movement of the lifting table is made longer, thereby making it possible to further downsize the drive source and preventing the rod from prying due to buckling of the compression spring. Durability can be improved.
第１図は本案装置を搭載した搬送台車の側面
図、第２図はその要部の平面図、第３図は第２図
の−線截断側面図、第４図及び第５図は夫々
第３図の−線及び−線截断面図、第６図
及び第７図は夫々第２図の−線及び−線
拡大截断面図である。
２……機台、３……Ｘ形リンク機構、３ａ……
一方のリンク、３ｂ……他方のリンク、４……昇
降テーブル、６……スライド部材、７……固定支
点部、８……駆動源、１１……ロツド、１２……
ガイドブロツク、１３……圧縮ばね。
Fig. 1 is a side view of the transport vehicle on which the proposed device is mounted, Fig. 2 is a plan view of the main parts thereof, Fig. 3 is a side view taken along the line - - in Fig. 2, and Figs. 3, and FIGS. 6 and 7 are enlarged sectional views taken along the line and - of FIG. 2, respectively. 2...Machine base, 3...X-type link mechanism, 3a...
One link, 3b...Other link, 4...Elevating table, 6...Slide member, 7...Fixed fulcrum portion, 8...Drive source, 11...Rod, 12...
Guide block, 13...compression spring.
Claims (1)
リンク機構を並設し、該各Ｘ形リンク機構を構
成する一方のリンクの下端を枢着する該機台上
のスライド部材を、該各Ｘ形リンク機構を構成
する他方のリンクの下端を枢着する該機台上の
固定支点部に向けて駆動源により進退させるこ
とにより該昇降テーブルを昇降させると共に、
該昇降テーブルの上昇動をアシストする圧縮ば
ねを設けるものにおいて、該駆動源を該両Ｘ形
リンク機構の並設間隙に配置すると共に、該並
設間隙に該スライド部材から該機台に固定のガ
イドブロツクを貫通して該固定支点部側にのび
るロツドを配置し、該圧縮ばねを該ガイドブロ
ツクと該ロツドの先端のフランジとの間に介設
したことを特徴とする昇降装置。 ２ 前記圧縮ばねを複数個に分割し、前記ロツド
に、該ロツドに対し摺動自在な仕切部材を介し
てこれら分割された複数の圧縮ばねを直列に外
挿したことを特徴とする請求項１に記載の昇降
装置。[Claims for Utility Model Registration] 1. A machine in which a pair of X-shaped link mechanisms that support a lifting table are arranged side by side on a machine base, and the lower end of one of the links constituting each X-shaped link mechanism is pivotally connected. The elevating table is raised and lowered by moving the slide member on the table forward and backward by a drive source toward a fixed fulcrum on the machine base to which the lower end of the other link constituting each X-shaped link mechanism is pivoted. ,
In a device that is provided with a compression spring that assists the upward movement of the lifting table, the driving source is arranged in the gap between the two X-shaped link mechanisms, and a connection member fixed to the machine base is installed in the gap from the slide member to the machine base. A lifting device characterized in that a rod is disposed extending through the guide block and extends toward the fixed fulcrum, and the compression spring is interposed between the guide block and a flange at the tip of the rod. 2. Claim 1, characterized in that the compression spring is divided into a plurality of pieces, and the plurality of divided compression springs are extrapolated to the rod in series via a partition member that is slidable with respect to the rod. Lifting device described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086629U JPH0518388Y2 (en) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086629U JPH0518388Y2 (en) | 1988-07-01 | 1988-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0210397U JPH0210397U (en) | 1990-01-23 |
| JPH0518388Y2 true JPH0518388Y2 (en) | 1993-05-17 |
Family
ID=31311267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988086629U Expired - Lifetime JPH0518388Y2 (en) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518388Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006264966A (en) * | 2005-03-25 | 2006-10-05 | Daifuku Co Ltd | Lifting device |
| JP2006264965A (en) * | 2005-03-25 | 2006-10-05 | Daifuku Co Ltd | Lifter device |
| JP6149384B2 (en) * | 2012-11-16 | 2017-06-21 | 株式会社大林組 | Transport device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0518387Y2 (en) * | 1986-03-31 | 1993-05-17 |
-
1988
- 1988-07-01 JP JP1988086629U patent/JPH0518388Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0210397U (en) | 1990-01-23 |
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