JP2016196364A - Lifting device - Google Patents

Lifting device Download PDF

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JP2016196364A
JP2016196364A JP2015077928A JP2015077928A JP2016196364A JP 2016196364 A JP2016196364 A JP 2016196364A JP 2015077928 A JP2015077928 A JP 2015077928A JP 2015077928 A JP2015077928 A JP 2015077928A JP 2016196364 A JP2016196364 A JP 2016196364A
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screw shaft
lifting device
struts
top plate
mounting base
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JP6290130B2 (en
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英維 坂田
Hideo Sakata
英維 坂田
紀匡 奥井
Norimasa Okui
紀匡 奥井
一宏 茂木
Kazuhiro Mogi
一宏 茂木
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Tsubakimoto Chain Co
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Tsubaki E&M Co
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Abstract

PROBLEM TO BE SOLVED: To provide a lifting device composed of a few components which achieves an installation floor area and compactness and high rigidity in a height direction.SOLUTION: In a lifting device 10, a screw shaft 22 is orthogonal in a horizontal direction relative to an assumed line X connecting a center P of a support post 30 to a center Q of a support post 40 and arranged at a position at equal intervals to the centers P and Q of the support posts 30 and 40; a work-piece mounting base 21 faces in a vertical direction opposite to the screw shaft 22 with respect to the assumed line connecting the centers P and Q of the support posts 30 and 40; a guide member 50 that guides the work-piece mounting base 21 to both support posts 30 and 40 is provided; and on a lower surface of a top plate outside respective ranges of the support posts 30 and 40 is arranged a gear box G to be connected to the screw shaft 22. This allows the device to make compactness and high rigidity compatible, eliminate bearing at an end part at the top plate side of the screw shaft and reduce the number of components.SELECTED DRAWING: Figure 1

Description

本発明は、対象物を昇降させるための昇降装置に関し、特に、支柱と並行して配設されたねじ軸をモータ等で回転させ、ボールねじ機構等の進退動を利用して対象物を昇降させ、その昇降をガイド部材で案内するという昇降装置に関する。   The present invention relates to an elevating device for elevating and lowering an object. In particular, the screw shaft disposed in parallel with a support column is rotated by a motor or the like, and the object is moved up and down by using a forward and backward movement of a ball screw mechanism or the like. It is related with the raising / lowering apparatus which guides the raising / lowering with a guide member.

このような昇降装置は、主に、支柱、モータ等の駆動部、ボールねじ機構等の昇降機構、及び昇降を案内するガイド部材で構成されており、その例として、特許文献1,2に示すものがある。   Such an elevating device is mainly composed of a support unit such as a column, a motor, an elevating mechanism such as a ball screw mechanism, and a guide member for guiding elevating. Examples thereof are shown in Patent Documents 1 and 2. There is something.

特開2009−91093号公報JP 2009-91093 A 特開2013−127275号公報JP 2013-127275 A

特許文献1は、コ字形の支柱の内側にボールねじ機構が配設され、ボールねじ機構のねじ軸に沿って、支柱内側面に直線ガイドが設けられ、支柱の下部にねじ軸と連結するギアボックスを具え、そのギアボックスにモータが連結されるという昇降装置を開示する。   In Patent Document 1, a ball screw mechanism is disposed inside a U-shaped column, a linear guide is provided on the inner surface of the column along the screw axis of the ball screw mechanism, and a gear connected to the screw shaft at the lower part of the column. An elevating device is disclosed that includes a box and a motor is coupled to the gear box.

特許文献1の昇降装置は、設置床面積が小さく、この点でコンパクト化を実現している。しかし、モータとギアボックスからなる駆動機構が設置される駆動部ベースが支柱の範囲内(直下)に配設されているという構成であるため、昇降装置の長手方向(高さ方向)寸法が大きくなる傾向にある。   The lifting device of Patent Document 1 has a small installation floor area, and in this respect, it is compact. However, since the drive unit base on which the drive mechanism including the motor and the gear box is installed is disposed within the range of the column (directly below), the longitudinal direction (height direction) dimension of the lifting device is large. Tend to be.

一方、特許文献2には、支柱の内側に、ボールねじ機構のねじ軸と直線ガイドが並設され、ねじ軸を駆動するモータも、これらに並設されている昇降装置が開示されている。この構成によれば、特許文献1の昇降装置に比べて、昇降装置の高さ方向寸法を小さくすることができる。また、直線ガイドの長手方向寸法が比較的長いため、特許文献1の昇降装置のような、直線ガイドとねじ軸の長手方向寸法がほぼ一致しているものに比べて、昇降部材の昇降を案内できる範囲が広い。   On the other hand, Patent Document 2 discloses an elevating device in which a screw shaft of a ball screw mechanism and a linear guide are arranged in parallel inside a support, and a motor for driving the screw shaft is also arranged in parallel. According to this configuration, the height direction dimension of the lifting device can be made smaller than that of the lifting device disclosed in Patent Document 1. In addition, since the longitudinal dimension of the linear guide is relatively long, the lifting / lowering member is guided to be lifted / lowered as compared with the lifting / lowering apparatus disclosed in Patent Document 1 in which the linear guide and the screw shaft have substantially the same longitudinal dimension. Wide range is possible.

しかしながら、特許文献2の昇降装置は、薄型の昇降装置を実現するためのもので、モータ、ねじ軸、ガイド部材が一列に並ぶように配置されているため、対象物による負荷が昇降装置に対して偏って掛かり易いという問題もある。昇降装置には、設置床面積と高さ方向のコンパクト性だけでなく、高い剛性も求められているため、これらの両立を図った昇降装置が望まれている。   However, the lifting device of Patent Document 2 is for realizing a thin lifting device, and since the motor, the screw shaft, and the guide member are arranged in a line, the load due to the object is applied to the lifting device. There is also a problem that it tends to be biased. The lifting device is required to have not only the installation floor area and compactness in the height direction but also high rigidity. Therefore, a lifting device that achieves both of these requirements is desired.

また、組立の容易さ、メインテナンス性の向上、軽量化、及び製造コストの低減の面から、昇降装置は、部品点数が少ない方が望ましい。   In addition, it is desirable that the lifting device has a smaller number of parts in terms of ease of assembly, improvement in maintenance, weight reduction, and reduction in manufacturing cost.

そこで、本発明は、前述した従来技術の問題点及びニーズに鑑み、設置床面積と高さ方向のコンパクト性を両立し、且つ、高剛性を実現し、さらに部品点数の少ない昇降装置を提供することを目的とする。   Therefore, in view of the problems and needs of the conventional technology described above, the present invention provides an elevating device that achieves both installation floor area and compactness in the height direction, achieves high rigidity, and has a small number of components. For the purpose.

本発明は、ベースプレートとトッププレートの間に配設される一対の支柱と、
前記両支柱の中心を結ぶ想定線に対して水平方向に直交し、且つ、前記両支柱の中心に対して等間隔の位置に配設されるねじ軸と、
前記両支柱のそれぞれの範囲外の前記トッププレートの下面に取付けられ、駆動装置から伝達されるトルクを前記ねじ軸が嵌込まれている中空出力軸から出力するギアボックスと、
前記ねじ軸の回転により該ねじ軸上を進退動する昇降部材と、
前記両支柱の間を通る連結部材によって前記昇降部材に連結され、前記想定線に対し前記ねじ軸と反対側の垂直方向に面するワーク取付ベースと、
前記ワーク取付ベースの昇降を前記両支柱の面上でそれぞれ案内する一対のガイド部材を具えることを特徴とする昇降装置によって前記課題を解決した。
The present invention includes a pair of support posts disposed between a base plate and a top plate;
A screw shaft that is orthogonal to a hypothetical line connecting the centers of both struts in a horizontal direction and is disposed at equal intervals with respect to the centers of both struts;
A gear box that is attached to the lower surface of the top plate outside the respective ranges of the both struts and that outputs torque transmitted from the driving device from a hollow output shaft into which the screw shaft is fitted;
An elevating member that moves forward and backward on the screw shaft by rotation of the screw shaft;
A work mounting base that is connected to the elevating member by a connecting member that passes between the two columns, and that faces in the vertical direction opposite to the screw shaft with respect to the assumed line;
The above problem has been solved by a lifting device comprising a pair of guide members for guiding the lifting and lowering of the work mounting base on the surfaces of the both columns.

本発明によれば、ベースプレートとトッププレートの間に一対の支柱が配設され、ギアボックスが両支柱のそれぞれの範囲外のトッププレートの下面に取付けられており、両支柱の中心を結ぶ想定線に対して水平方向に直交し、且つ、両支柱の中心に対して等間隔の位置にねじ軸が配設されている。また、ねじ軸上を進退動する昇降部材に両支柱の間を通る連結部材によって連結されるワーク取付ベースが、当該想定線に対し、ねじ軸と反対側の垂直方向に面しており、且つ、一対のガイド部材によって両支柱の面上で案内されるという構成であるため、以下の効果を奏する。すなわち、第一に、ねじ軸を中心として支柱が対称に配設され、両方の支柱にガイド部材が設けられているため、対象物による負荷を両支柱で均等に受けることができ、結果として、昇降装置の剛性を高めることができる。これにより、ガイド部材を比較的小型にできるため、その分、昇降装置をコンパクトにすることもできる。第二に、支柱の一端を設置面に近付けることができるため、ガイド部材が支柱の上部から設置面近くの下部まで全部に亘ってワーク取付ベースの昇降を案内することができる。これにより、ワーク取付ベースの昇降をスムーズに、且つ、安定させることができる。また、昇降装置の高さ方向寸法を比較的コンパクトにできる。第三に、スペースを効率的に使用した、支柱及びねじ軸の配置を実現できるため、剛性を高めながら、設置床面積を最小限に抑えることができる。よって、高剛性とコンパクト性の両立を実現した昇降装置とすることができる。また、ギアボックスがトッププレートの下面に取付けられており、ねじ軸がギアボックスの中空出力軸に嵌込まれているという構成であるため、本来、ねじ軸のトッププレート側端部とベースプレート側端部に配設すべき軸受の内、トッププレート側端部の軸受を省略することができる。これにより、ねじ軸を軸支する1つの軸受の分、部品点数を削減することができるから、組立が容易であり、メインテナンス性を向上させることができる。また、軽量化と製造コストの低減も図ることができる。   According to the present invention, a pair of support columns are arranged between the base plate and the top plate, and a gear box is attached to the lower surface of the top plate outside the range of both support columns, and an assumed line connecting the centers of both support columns. The screw shaft is disposed at a position perpendicular to the horizontal direction and at equal intervals with respect to the centers of the two columns. In addition, the work mounting base connected by the connecting member passing between the two columns to the elevating member that moves forward and backward on the screw shaft faces the vertical direction opposite to the screw shaft with respect to the assumed line, and Since the structure is such that it is guided on the surfaces of both struts by a pair of guide members, the following effects are produced. That is, firstly, since the pillars are symmetrically arranged around the screw shaft and the guide members are provided on both pillars, the load due to the object can be equally received by both pillars. The rigidity of the lifting device can be increased. Thereby, since a guide member can be made comparatively small, the raising / lowering apparatus can also be made compact correspondingly. Second, since one end of the support can be brought close to the installation surface, the guide member can guide the lifting and lowering of the work mounting base from the upper part of the support to the lower part near the installation surface. Thereby, raising / lowering of a workpiece | work attachment base can be made smooth and stable. Moreover, the height direction dimension of the lifting device can be made relatively compact. Third, since it is possible to realize the arrangement of the columns and screw shafts that efficiently use the space, it is possible to minimize the installation floor area while increasing the rigidity. Therefore, it can be set as the raising / lowering apparatus which implement | achieved both high rigidity and compactness. In addition, since the gear box is attached to the lower surface of the top plate and the screw shaft is fitted into the hollow output shaft of the gear box, the end portion on the top plate side and the end on the base plate side of the screw shaft are inherently arranged. Of the bearings to be disposed in the portion, the bearing at the end portion on the top plate side can be omitted. As a result, the number of parts can be reduced by the amount of one bearing that supports the screw shaft, so that assembly is easy and maintenance can be improved. Further, the weight can be reduced and the manufacturing cost can be reduced.

また、ねじ軸の中心が両支柱の間の範囲内に位置している構成とすれば、ねじ軸の中心と負荷の中心との距離を縮めることができ、ねじ軸が許容できる荷重が増すため、ガイド部材に掛かる負荷を軽減することができる。   In addition, if the configuration is such that the center of the screw shaft is located within the range between both struts, the distance between the center of the screw shaft and the center of the load can be shortened, and the allowable load of the screw shaft increases. The load on the guide member can be reduced.

また、支柱を横断面H形状又はコ字状とすれば、同形状の市販品の鋼材を支柱として使用することができるので、生産性を一層高めることができる。   Further, if the support has a H-shaped cross section or a U-shape, a commercially available steel material having the same shape can be used as the support, so that productivity can be further enhanced.

本発明の第一実施形態の昇降装置のトッププレートを外した状態の平面図。The top view of the state which removed the top plate of the raising / lowering apparatus of 1st embodiment of this invention. 本発明の第一実施形態の昇降装置の一部透視の側面図。The partial perspective view of the raising / lowering apparatus of 1st embodiment of this invention. 本発明の第二実施形態の昇降装置のトッププレートを外した状態の平面図。The top view of the state which removed the top plate of the raising / lowering apparatus of 2nd embodiment of this invention. 本発明の第二実施形態の昇降装置の側方縦断面図。The side longitudinal cross-sectional view of the raising / lowering apparatus of 2nd embodiment of this invention. 本発明の第二実施形態の昇降装置の側面図。The side view of the raising / lowering apparatus of 2nd embodiment of this invention. 本発明の第三実施形態の昇降装置のバリエーションを示す平面図(トッププレートを外した状態)。The top view which shows the variation of the raising / lowering apparatus of 3rd embodiment of this invention (state which removed the top plate).

本発明の実施例を、図1〜6を参照して説明する。但し、本発明はこの実施形態に限定されるものではない。   An embodiment of the present invention will be described with reference to FIGS. However, the present invention is not limited to this embodiment.

図1に示す昇降装置10は、ベースプレート12とトッププレート16(図2参照)の間に配設された一対の支柱30,40と、ねじ軸22及びねじ軸22上を進退動する昇降部材(昇降ナット)24を具えるボールねじ機構20を有する。ねじ軸22は、支柱30の中心Pと支柱40の中心Qを結ぶ想定線Xに対して水平方向に直交し、且つ、支柱30,40の中心P,Qに対して等間隔の位置に配設されている。ワーク取付ベース21は、支柱30,40の中心P,Qを結ぶ想定線に対してねじ軸22と反対側の垂直方向に面しており、ワーク取付ベース21と昇降部材24は、支柱30,40の間を通る連結部材26によって連結されている。ワーク取付ベース21には、対象物を載せる荷受部材(図3の符号25を参照。)が取付けられる。   A lifting device 10 shown in FIG. 1 includes a pair of support columns 30 and 40 disposed between a base plate 12 and a top plate 16 (see FIG. 2), a screw shaft 22 and a lifting member that moves forward and backward on the screw shaft 22 ( It has a ball screw mechanism 20 including a lifting nut) 24. The screw shaft 22 is arranged at a position perpendicular to the assumed line X connecting the center P of the support column 30 and the center Q of the support column 40 in the horizontal direction and at equal intervals with respect to the centers P and Q of the support columns 30 and 40. It is installed. The workpiece mounting base 21 faces the vertical direction opposite to the screw shaft 22 with respect to an assumed line connecting the centers P and Q of the columns 30 and 40. The workpiece mounting base 21 and the elevating member 24 are They are connected by a connecting member 26 that passes between 40. A load receiving member (see reference numeral 25 in FIG. 3) on which an object is placed is attached to the work attachment base 21.

図2に示すように、支柱40はトッププレート16とベースプレート12により挟持され、モータMが連結されているギアボックスGは、トッププレート16の内面側に取付けられている。具体的には、ギアボックスGは、ギアボックスGに設けられたねじ孔62にトッププレート16の上面側からボルトが挿入されることによって固定されている。ねじ軸22は、ギアボックスGの中空出力軸64に嵌込まれ、中空出力軸64とベースプレート12上に設けられる軸受14によって回転可能に軸支されている。これにより、本来、ねじ軸22のトッププレート16側端部とベースプレート12側端部に配設すべき軸受の内、トッププレート16側端部の軸受を省略することができるから、その分、部品点数を削減することができる。よって、昇降装置10は、組立が容易であり、メインテナンス性を向上させることができる。また、軽量化と製造コストの低減も図ることができる。     As shown in FIG. 2, the support column 40 is sandwiched between the top plate 16 and the base plate 12, and the gear box G to which the motor M is connected is attached to the inner surface side of the top plate 16. Specifically, the gear box G is fixed by inserting bolts into the screw holes 62 provided in the gear box G from the upper surface side of the top plate 16. The screw shaft 22 is fitted into the hollow output shaft 64 of the gear box G, and is rotatably supported by a bearing 14 provided on the hollow output shaft 64 and the base plate 12. As a result, the bearings at the top plate 16 side end portion of the screw shaft 22 that are originally to be disposed at the top plate 16 side end portion and the base plate 12 side end portion can be omitted. The score can be reduced. Therefore, the lifting device 10 is easy to assemble and can improve maintenance. Further, the weight can be reduced and the manufacturing cost can be reduced.

ギアボックスGは、図1に示すように、モータMに連結されているため、モータMのトルクはギアボックスG内のギアを介して中空出力軸64に出力され、ねじ軸22に伝達される。これによりねじ軸22は回転し、昇降部材24がねじ軸22上を進退動する。なお、ギアボックスGの内部構成は既に知られているものを適用すればよい。   Since the gear box G is connected to the motor M as shown in FIG. 1, the torque of the motor M is output to the hollow output shaft 64 via the gear in the gear box G and transmitted to the screw shaft 22. . As a result, the screw shaft 22 rotates, and the elevating member 24 moves forward and backward on the screw shaft 22. In addition, what is necessary is just to apply the already known internal structure of the gear box G.

上記のとおり、昇降装置10のねじ軸22は、支柱30の中心Pと支柱40の中心Qを結ぶ想定線Xに対して水平方向に直交し、且つ、支柱30,40の中心P,Qに対して等間隔の位置に配設されている(図1参照)。よって、ねじ軸22を中心として支柱30,40が対称に配設されるという構成が実現される。そして、上記のとおり、支柱30,40の双方にワーク取付ベース21を案内するガイド部材50が設けられているため、対象物による負荷を両方の支柱30,40で均等に受けることができ、昇降装置10の剛性を高めることができる。これにより、ガイド部材50を従来に比べて小型にすることもできるため、その分、昇降装置10をコンパクトにすることもできる。また、昇降装置10のような支柱30,40及びねじ軸22の配置によれば、スペースを効率的に使用できるため、設置床面積を最小限に抑えることができる。   As described above, the screw shaft 22 of the elevating device 10 is orthogonal to the assumed line X connecting the center P of the support column 30 and the center Q of the support column 40 in the horizontal direction, and is at the centers P and Q of the support columns 30 and 40. In contrast, they are arranged at equally spaced positions (see FIG. 1). Therefore, a configuration in which the support columns 30 and 40 are arranged symmetrically about the screw shaft 22 is realized. And since the guide member 50 which guides the workpiece | work attachment base 21 is provided in both the support | pillars 30 and 40 as mentioned above, the load by a target object can be received equally by both the support | pillars 30 and 40, and it goes up and down The rigidity of the device 10 can be increased. Thereby, since the guide member 50 can also be reduced in size compared with the past, the raising / lowering apparatus 10 can also be made compact accordingly. Moreover, according to arrangement | positioning of the support | pillars 30 and 40 and the screw shaft 22 like the raising / lowering apparatus 10, since space can be used efficiently, an installation floor area can be suppressed to the minimum.

また、支柱30,40のそれぞれの範囲外に、ねじ軸22に連結されるギアボックスGが設置されているため、特許文献1のような、ギアボックスが支柱の範囲内に設置されており、ねじ軸と支柱の長手方向寸法が同じ昇降装置に比べて、支柱の長手方向寸法を大きくすることができ、また、支柱の一端を設置面に近付けることができる。換言すれば、特許文献1の昇降装置の支柱と同等の寸法とした場合、昇降装置10の長手方向寸法を比較的コンパクトにできるということである(図2参照。)。これにより、昇降装置の低床化を図ることもでき、その場合、昇降装置の上部に作業者がアクセスし易くなるため、メインテナンス性を向上させることができる。 Further, since the gear box G connected to the screw shaft 22 is installed outside the respective ranges of the support columns 30 and 40, the gear box as in Patent Document 1 is installed within the range of the support columns . Compared with a lifting device having the same longitudinal dimension of the screw shaft and the strut, the longitudinal dimension of the strut can be increased, and one end of the strut can be brought closer to the installation surface. In other words, when the dimensions are the same as the support column of the lifting device of Patent Document 1, the longitudinal dimension of the lifting device 10 can be made relatively compact (see FIG. 2). Thereby, the floor of the lifting device can also be lowered, and in this case, the operator can easily access the upper portion of the lifting device, so that maintenance can be improved.

ワーク取付ベース21の昇降を案内するガイド部材50は、直線ガイド52と直線ガイド52上を図示しない転動体が転動して転がり案内する、上下一対のスライド部材54から構成されている。スライド部材54は、昇降ベース31,41を介してワーク取付ベース21と連結されている。直線ガイド52は、図2に示されているように、支柱40の長手方向の略全てに亘って設けられているため(支柱30も同様。)、ワーク取付ベース21の昇降を支柱40の上部から設置面近くの下部まで全部に亘って案内することができる。よって、ワーク取付ベース21の昇降をスムーズに、且つ、安定させることができる。   The guide member 50 that guides the lifting and lowering of the workpiece mounting base 21 is composed of a linear guide 52 and a pair of upper and lower slide members 54 that are guided by rolling rolling elements (not shown) on the linear guide 52. The slide member 54 is connected to the work mounting base 21 via the elevating bases 31 and 41. As shown in FIG. 2, the linear guide 52 is provided over substantially the entire longitudinal direction of the support column 40 (the same applies to the support column 30). To the lower part near the installation surface. Thus, the workpiece mounting base 21 can be raised and lowered smoothly and stably.

図1に示すように、昇降装置10の支柱30,40は、フランジ32,42,36,46とウェブ34,44を有する横断面H形状のものである。支柱30,40は、ワーク取付ベース21が一方のフランジ32,42の外側に位置するように配設されているが、支柱30,40の向きは適宜変更することができる。また、昇降装置10の直線ガイド52は、ウェブ34,44に取付ける以外に、フランジ32,42,36,46の内外面のいずれに取付けてもよい。   As shown in FIG. 1, the support columns 30 and 40 of the lifting device 10 have a H-shaped cross section having flanges 32, 42, 36 and 46 and webs 34 and 44. The support columns 30 and 40 are arranged so that the work mounting base 21 is positioned outside the one flanges 32 and 42, but the orientation of the support columns 30 and 40 can be changed as appropriate. Further, the linear guide 52 of the lifting device 10 may be attached to any of the inner and outer surfaces of the flanges 32, 42, 36, 46 in addition to being attached to the webs 34, 44.

支柱30,40には、支柱30,40及びねじ軸22を囲うカバー28,38,48が取付けられている。これにより、ボールねじ機構20とガイド部材50へ粉塵等の異物が侵入することを防ぐことができる。   Covers 28, 38, 48 surrounding the columns 30, 40 and the screw shaft 22 are attached to the columns 30, 40. Thereby, it is possible to prevent foreign matters such as dust from entering the ball screw mechanism 20 and the guide member 50.

図3は、本発明の第二実施形態の昇降装置10aを示す平面図である。昇降装置10aの基本的な構成は昇降装置10と同様である。昇降装置10aのように、横断面コ字状の支柱30a,40aを用いることもできる。ギアボックスGは、昇降装置10と同様に、支柱30a,40aのそれぞれの範囲外に設置されている。連結部材26aと昇降ベース31aの形状は、支柱30a,40aの形状、及びこれらに取付けられるガイド部材50の位置によって適宜変更される。また、ガイド部材50は、図5に示すように、上下一対のスライド部材54,54を具えている。   FIG. 3 is a plan view showing the lifting device 10a according to the second embodiment of the present invention. The basic configuration of the lifting device 10 a is the same as that of the lifting device 10. Like the elevating device 10a, struts 30a and 40a having a U-shaped cross section can also be used. The gear box G is installed outside the respective ranges of the support columns 30a and 40a, like the lifting device 10. The shapes of the connecting member 26a and the elevating base 31a are appropriately changed depending on the shapes of the columns 30a and 40a and the position of the guide member 50 attached to them. The guide member 50 includes a pair of upper and lower slide members 54, 54 as shown in FIG.

図3に示すように、ねじ軸22は、支柱30aの中心P´と支柱40aの中心Q´を結ぶ想定線X´に対して水平方向に直交し、且つ、支柱30a,40aの中心P´,Q´に対して等間隔の位置に配設されており、さらに、ねじ軸22の中心は、支柱30a,40aの間の範囲内に位置している。この構成により、ワーク取付ベース21に取付けられるワーク25上に載せられる対象物の負荷の中心Lとねじ軸22との距離を縮めることができ、ねじ軸22が許容できる荷重が増すため、ガイド部材50に掛かる負荷を軽減することができる。よって、ガイド部材50を一層コンパクトにすることができ、その分、昇降装置全体としてもコンパクト化を図ることができる。   As shown in FIG. 3, the screw shaft 22 is orthogonal to the assumed line X ′ connecting the center P ′ of the support column 30a and the center Q ′ of the support column 40a in the horizontal direction, and the center P ′ of the support columns 30a and 40a. , Q ′ are arranged at equal intervals, and the center of the screw shaft 22 is located within the range between the columns 30a, 40a. With this configuration, the distance between the load center L of the object to be mounted on the workpiece 25 mounted on the workpiece mounting base 21 and the screw shaft 22 can be reduced, and the allowable load of the screw shaft 22 increases. The load on 50 can be reduced. Therefore, the guide member 50 can be made more compact, and the entire lifting device can be made compact accordingly.

図4は、昇降装置10aの側方縦断面図である。同図では、便宜上、ガイド部材50の図示を省略している。図4に示すとおり、支柱30aはトッププレート16aとベースプレート12aにより挟持され、モータMが連結されているギアボックスGは、トッププレート16aの内面側に取付けられている。ねじ軸22は、ギアボックスの中空出力軸64に嵌め込まれており、中空出力軸64とベースプレート12a上に設けられる軸受14によって回転可能に軸支されている。これにより、本来、ねじ軸22のトッププレート16a側端部とベースプレート12a側端部に配設すべき軸受の内、トッププレート16a側端部の軸受を省略することができるから、その分、部品点数を削減することができる。よって、昇降装置10aは、組立が容易であり、メインテナンス性を向上させることができる。また、軽量化と製造コストの低減も図ることができる。   FIG. 4 is a side longitudinal sectional view of the lifting device 10a. In the drawing, the guide member 50 is not shown for convenience. As shown in FIG. 4, the support column 30a is sandwiched between the top plate 16a and the base plate 12a, and the gear box G to which the motor M is connected is attached to the inner surface side of the top plate 16a. The screw shaft 22 is fitted into a hollow output shaft 64 of the gear box, and is rotatably supported by a bearing 14 provided on the hollow output shaft 64 and the base plate 12a. As a result, among the bearings that should originally be arranged at the top plate 16a side end and the base plate 12a side end of the screw shaft 22, the bearing at the top plate 16a side end can be omitted. The score can be reduced. Therefore, the elevating device 10a is easy to assemble and can improve maintenance. Further, the weight can be reduced and the manufacturing cost can be reduced.

図6は、本発明の第三実施形態の昇降装置10b〜10eを示す平面図である。昇降装置10b〜10eは、図1に示されている昇降装置10と同様に、トッププレート16(図2参照。)が外されている状態である。   FIG. 6 is a plan view showing the lifting devices 10b to 10e according to the third embodiment of the present invention. The elevating devices 10b to 10e are in a state in which the top plate 16 (see FIG. 2) is removed in the same manner as the elevating device 10 shown in FIG.

昇降装置10b〜10eの支柱30b〜e,40b〜eのように、支柱の向きは適宜決定することができる。また、ワーク取付ベース21の昇降を案内するガイド部材50の支柱に対する位置も適宜決定することができ、ガイド部材50の位置に応じて、昇降ベース31,41の形状を変更すればよい。   As in the columns 30b to e and 40b to e of the lifting devices 10b to 10e, the direction of the columns can be determined as appropriate. In addition, the position of the guide member 50 that guides the lifting and lowering of the work mounting base 21 with respect to the support can be determined as appropriate, and the shapes of the lifting bases 31 and 41 may be changed according to the position of the guide member 50.

以上に説明した昇降装置10〜10eのように、支柱として横断面H形状又はコ字状というような市販されている形鋼を使用すれば、昇降装置の生産性を高めることができる。なお、横断面H形状又はコ字状以外の形状の支柱を採用することができることは言うまでもない。   As in the lifting devices 10 to 10e described above, the productivity of the lifting device can be increased by using a commercially available shape steel having a cross-sectional H shape or a U shape as the support. Needless to say, struts having a shape other than the H-shaped cross section or the U-shape can be employed.

本発明の昇降装置のガイド機構は、上記に説明した直線ガイド52とスライド部材54から構成されるもの以外に、ローラやメタル軸受を用いたものでもよい。また、ボールねじ機構の他に台形ねじ機構等の昇降機構を適用することもできる。   The guide mechanism of the lifting device of the present invention may be one using a roller or a metal bearing in addition to the linear guide 52 and the slide member 54 described above. In addition to the ball screw mechanism, a lifting mechanism such as a trapezoidal screw mechanism can also be applied.

以上に説明したとおり、本発明によれば、高剛性とコンパクト性の両立を実現した、部品点数の少ない昇降装置を提供することができる。   As described above, according to the present invention, it is possible to provide an elevating device with a small number of parts that achieves both high rigidity and compactness.

M 駆動装置(モータ)
G1,G2 ギアボックス
X 想定線
P,Q 支柱の中心
10〜10f 昇降装置
12 ベースプレート
16 トッププレート
21 ワーク取付ベース
22 ねじ軸
24 昇降部材
26 連結部材
30,40 支柱
50 ガイド部材
62,64 入出力軸
M Drive device (motor)
G1, G2 Gearbox X Assumed line P, Q Center of pillar 10-10f Lifting device 12 Base plate 16 Top plate 21 Work mounting base 22 Screw shaft 24 Lifting member 26 Connecting member 30, 40 Column 50 Guide member 62, 64 Input / output shaft

Claims (4)

ベースプレートとトッププレートの間に配設される一対の支柱と、
前記両支柱の中心を結ぶ想定線に対して水平方向に直交し、且つ、前記両支柱の中心に対して等間隔の位置に配設されるねじ軸と、
前記両支柱のそれぞれの範囲外の前記トッププレートの下面に取付けられ、駆動装置から伝達されるトルクを前記ねじ軸が嵌込まれている中空出力軸から出力するギアボックスと、
前記ねじ軸の回転により該ねじ軸上を進退動する昇降部材と、
前記両支柱の間を通る連結部材によって前記昇降部材に連結され、前記想定線に対し前記ねじ軸と反対側の垂直方向に面するワーク取付ベースと、
前記ワーク取付ベースの昇降を前記両支柱の面上でそれぞれ案内する一対のガイド部材を具えることを特徴とする、
昇降装置。
A pair of support posts disposed between the base plate and the top plate;
A screw shaft that is orthogonal to a hypothetical line connecting the centers of both struts in a horizontal direction and is disposed at equal intervals with respect to the centers of both struts;
A gear box that is attached to the lower surface of the top plate outside the respective ranges of the both struts and that outputs torque transmitted from the driving device from a hollow output shaft into which the screw shaft is fitted;
An elevating member that moves forward and backward on the screw shaft by rotation of the screw shaft;
A work mounting base that is connected to the elevating member by a connecting member that passes between the two columns, and that faces in the vertical direction opposite to the screw shaft with respect to the assumed line;
Characterized in that it comprises a pair of guide members for respectively guiding the lifting and lowering of the work mounting base on the surfaces of the two columns.
lift device.
前記ねじ軸の中心が前記両支柱の間の範囲内に位置している、請求項1の昇降装置。   The lifting device according to claim 1, wherein the center of the screw shaft is located within a range between the both struts. 前記両支柱が横断面H形状である、請求項1又は2の昇降装置。   The elevating device according to claim 1 or 2, wherein the both struts have a H-shaped cross section. 前記両支柱が横断面コ字状である、請求項1又は2の昇降装置。   The elevating device according to claim 1 or 2, wherein the both struts have a U-shaped cross section.
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CN114466547A (en) * 2022-03-07 2022-05-10 湖南铁路科技职业技术学院 DCDC power converter
WO2022209575A1 (en) * 2021-03-31 2022-10-06 日本精工株式会社 Table device

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JP3126440U (en) * 2006-08-11 2006-10-26 ヨンリエンパンチンミーコンイエクーフェンユーシェンコンスー Articulated robot
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US4782920A (en) * 1987-02-04 1988-11-08 Cascade Corporation Load-lifting mast especially adapted for use with automatically-guided vehicles
JPH09290996A (en) * 1996-04-26 1997-11-11 Hatamoto Kogyo:Kk Lift device for wheel chair or the like
JP3126440U (en) * 2006-08-11 2006-10-26 ヨンリエンパンチンミーコンイエクーフェンユーシェンコンスー Articulated robot
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WO2022209575A1 (en) * 2021-03-31 2022-10-06 日本精工株式会社 Table device
JP7537346B2 (en) 2021-03-31 2024-08-21 日本精工株式会社 Table device
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CN114466547B (en) * 2022-03-07 2023-11-10 湖南铁路科技职业技术学院 DCDC power converter

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