JP2004006208A - Lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifting device that can set easily and steadily the drive amount to the optimal descending position based on the condition of the installation location. <P>SOLUTION: This is a lifting device that comprises a plurality of lifting control parts 26 which individually control drive of a plurality of electric motors 22 for individually driving lifting of a plurality of electric apparatuses in hung state, an optimal descending position setting mode which memorizes and sets on the lifting control part 26 the driving amount by which the electric apparatuses are descended and installed at the optimal descending position by driving the electric apparatuses from the uppermost lifted position to the optimal descended position, and an operating mode which drives the electric apparatuses from the uppermost position to the optimal descended position based on the driving amount of this optimal descending position setting mode. <P>COPYRIGHT: (C)2004,JPO

Description

この表１から、例えば、昇降高さＡとして６ｍ下降駆動させた際には、最上昇位置から最下降位置までの下降時間Ｂの１２１ｓ（秒）から床面までの下降時間Ｃの３０ｓを減算した下降時間（Ｂ−Ｃ＝１２１ｓ−３０ｓ＝９１ｓ）が昇降高さＡ６ｍの場合の最適下降位置（６ｍ−１．５ｍ）への下降時間となる。
【０１４０】
また、この表１から解るように、昇降高さＡが高くなるに従い、つまり、下降距離が長くなるに従い、単位距離毎、例えば、昇降高さＡが４〜６ｍの２ｍは、下降時間Ｂが７７ｓから１２１ｓの４４ｓ要しているに対して、昇降高さＡが１０〜１２ｍの２ｍは、下降時間Ｂが２２０ｓから２７６ｓの５６ｓ要している。
【０１４１】
つまり、昇降高さＡが大きくなると吊持されている照明器具３１の下降時間Ｂは大きくなり、つまり下降距離が大きくなると下降速度が遅くなる。
【０１４２】
これは、下降距離が長くなると照明器具３１を吊持しているワイヤーロープ２４も長くなり、巻取ドラム２３に巻回されるワイヤーロープ２４の巻回径が変化するためである。
【０１４３】
つまり、下降開始当初の巻取ドラム２３に巻回されているワイヤーロープ２４の巻回径が大きいために、１回転で繰り出すワイヤーロープ２４の長さは長くなり、繰り出し経過と共に巻取ドラム２３に巻回されているワイヤーロープ２４の巻回径が小さくなり、巻き取りドラム２３の１回転当たりの繰り出し長さが短くなるためである。
【０１４４】
これにより、前述の下降時間Ｂから床面までの下降時間Ｃを減算して設定した最適下降位置に、下降距離による誤差が生じる虞がある。
【０１４５】
そこで、巻取ドラム２３からワイヤーロープ２４が繰り出され、照明器具３１が下降駆動した距離に応じて、単位距離毎の下降時間を算出して、その単位時間毎の下降時間を用いて前記床面までの下降時間Ｃを補正することで昇降高さＡに応じた最適下降位置の設定が可能となる。
【０１４６】
この他の実施形態により、照明器具３１の下降距離に応じた下降時間の変動に対して、最適下降位置での下降駆動量を容易に設定できる。
【０１４７】
なお、昇降高さＡは、昇降装置を設置時に昇降装置本体２１の設置位置から床面２０ｂの距離を実測設定するか、あるいは、ワイヤーロープ２４の繰り出しに応じた回転駆動してワイヤーロープ２４の繰り出し距離を計測するセンサーで検出する方法などがある。
【０１４８】
次に、本発明に係る昇降装置の最適メンテナンス位置である最適下降位置を、昇降装置毎に設定する為の応用形態を図９を用いて説明する。
【０１４９】
本発明に係る昇降装置本体２１は、図９に示すように、高天井内に設置された複数の昇降装置本体２１ａ〜２１ｎに吊持された個々の照明器具３１ａ〜３１ｎを単一の操作スイッチ１５で昇降駆動されるようになっている。
【０１５０】
この複数の昇降装置本体２１ａ〜２１ｎを構成する各種構成部品や製造時の誤差や昇降駆動時の損失誤差などにより昇降装置本体２１ａ〜２１ｎ間で最適下降位置であるメンテナンス位置の設定に誤差が生じる。これらの誤差を昇降装置本体２１ａ〜２１ｎ毎に個別に調整する必要がある。
【０１５１】
そこで、前記昇降装置本体２１ａ〜２１ｎの昇降制御部２６に赤外線制御信号発信器（以下、単にリモコン発信器と称する）４２からの赤外線による遠隔制御信号を受信する赤外受信部１７ｄ、または外部設定器４１からの有線による制御信号を受信する設定器接続部４３を設ける。
【０１５２】
リモコン発信器４２は、昇降装置本体２１ａ〜２１ｎ毎に付されたアドレス番号と、昇降装置本体２１ａ〜２１ｎの駆動モード切替指示と、吊持された照明器具３１ａ〜３１ｎを昇降駆動する電動モータ２２ａ〜２２ｎの正転・逆転駆動と駆動停止の駆動制御とからなる赤外制御信号を発信するものである。
【０１５３】
一方、昇降装置本体２１ａ〜２１ｎに設けられた赤外線受信部１７ｄは、前記リモコン発信器４２から送信された赤外線信号の内、自己のアドレス番号に一致する赤外制御信号を受信し、その赤外制御信号に含まれている駆動モード切替指示と、電動モータの正転・逆転駆動と駆動停止等の駆動制御信号を解読して実行される。
【０１５４】
具体的には、例えば、リモコン発信器４２から昇降装置本体２１ａのアドレス番号と、この昇降装置本体２１ａの駆動モードを設定モードに設定する赤外制御信号が発信されると、この赤外制御信号を受信した昇降装置本体２１ａは、自己アドレス番号への赤外制御信号であることの認識と、駆動モードを設定モードに切替て、後続するリモコン発信器４２からの赤外制御信号の受信待機する。この設定モード状態で、リモコン発信器４２からアドレス番号と吊持されている照明器具３１ａの上昇、下降、または停止駆動制御信号が送信受信すると、昇降装置本体２１ａは、その制御信号の基で、吊持されている照明器具３１ａを昇降駆動させると共に、最適メンテナンス位置の設定などの処理が実行される。
【０１５５】
このようにリモコン発信器４２から駆動制御する昇降装置本体２１のアドレス番号と、そのアドレス番号の昇降装置本体２１の駆動モードや駆動制御内容を示す赤外制御信号により、昇降装置本体２１を個別に駆動制御できると共に、設定モードにおける最適メンテナンス位置である最適下降値の調整設定が個別に実行でき、昇降装置間の誤差を補正修正可能となる。
【０１５６】
また、前記リモコン発信器４２に変えて、外部設定器４１を前記昇降装置本体２１の設定器接続部４３に接続して、その外部設定器４１を接続した昇降装置本体２１に対して、駆動モードの選択設定と吊持されている照明器具３１の昇降駆動制御などの制御信号を有線で送信し、その有線送信された制御信号の基で、個々の昇降装置本体２１の最適メンテナンス位置である最適下降位置の設定等を行う。
【０１５７】
これにより、昇降装置本体２１間の誤差を個別に補正修正可能となる。
【０１５８】
【発明の効果】
請求項１の発明の昇降装置は、保守点検の運転モードの際に、昇降体を最適下降位置に昇降させる最適下降位置設定において、一旦昇降体を最適下降位置に昇降させ、その最適下降位置から最上昇位置までの駆動量を基に最適下降位置までの基準駆動量とすることで、煩雑な演算機能を用いることなく、かつ、各昇降装置に応じた最適下降位置までの駆動量設定が可能となる効果を有している。
【０１５９】
請求項２の発明の昇降装置は、最適下降位置の設定において、最適下降位置付近まで下降駆動させた後に、昇降調整することで精細な最適下降位置の設定が容易となる効果を有している。
【０１６０】
請求項３及び請求項４の発明の昇降装置は、昇降装置の取り付け面、または昇降体の最下降位置に高低差がある場合、その高低差に応じた各昇降装置の最適下降位置が容易に設定できる効果を有している。
【０１６１】
請求項５及び請求項６の発明の昇降装置は、昇降させる電気機器の重量と昇降距離に影響されることなく、最適下降位置の設定と、その最適下降位置への下降駆動が可能となった。
【０１６２】
請求項７及び請求項８の発明の昇降装置は、昇降装置を個別に最適下降位置の調整設定が可能となり、昇降装置間の誤差の解消、または昇降装置毎の条件設定が可能となった。
【図面の簡単な説明】
【図１】本発明に係る昇降装置に用いられる昇降制御部の構成を示すブロック図。
【図２】本発明に係る昇降装置の概要構成を示すブロック図。
【図３】本発明に係る昇降装置の設置状態を説明する説明図。
【図４】本発明に係る昇降装置の第１の駆動制御モードである設定モードの動作を説明するフローチャート。
【図５】本発明の昇降装置の第２の駆動制御モードである運転モードの動作を説明するフローチャート。
【図６】本発明に係る昇降装置の第１の駆動制御モードの他の実施形態の動作を説明するフローチャート。
【図７】本発明に係る昇降装置の第１の駆動制御モードの他の実施形態の応用例の動作を説明するフローチャート。
【図８】本発明に係る昇降装置の他の実施形態を説明する説明図。
【図９】本発明に係る昇降装置の応用形態を説明する説明図。
【符号の説明】
１１…マイクロプロセッサ（ＭＰＵ）、１２…メモリ、１３…モータドライブ回路、１４…タイマー、１５…操作スイッチ、１６…モード切換スイッチ、２１…昇降装置本体、２２…電動モータ、２３…巻取ドラム、２４…ワイヤーロープ、２５…ワイヤガード、２６…昇降制御部、２７…点灯制御部、２８…給電端子、２９…受電端子、３０…昇降体、３１…照明器具。[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a lifting device for raising and lowering electric equipment such as a lighting device and a loudspeaker installed on a high ceiling, and more particularly to a lifting device for easily and surely setting an optimum lowering position when performing maintenance and inspection of electric devices.
[0002]
[Prior art]
Conventionally, when electrical equipment such as lighting equipment and loudspeakers are installed on high ceilings such as factories, gymnasiums, and event venues, to facilitate maintenance and inspection of electrical equipment, electric equipment is provided by a lifting device installed on high ceilings. The device can be lifted up and down by hanging it.
[0003]
When performing maintenance and inspection of the electric equipment suspended near the high ceiling by this lifting / lowering device, the lifting / lowering device is driven down to lower the electrical equipment to an optimum position where maintenance and inspection is easy (hereinafter, referred to as an optimum descent position). After stopping and holding, and performing maintenance and inspection of the electric equipment at this optimal lowering position, for example, replacing the lighting lamp of the lighting equipment, the lifting device is driven up to hold the electric equipment at the predetermined highest position on the high ceiling. (For example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-7-176206.
[0005]
[Problems to be solved by the invention]
The conventional elevating device is based on a setting mode for setting a driving time for driving an electric device to descend from an uppermost position to an optimal lowering position by an operation panel attached to the elevating device, and a descent driving time set in this setting mode. It has a drive mode and a drive mode for driving the lifting device down.
[0006]
In this setting mode, by using the operation panel to drive the electric device from the highest position to the vicinity of the preset optimum lowering position, and the time adjusted from the vicinity of the optimum lowering position to the optimum lowering position, The descent drive time up to the optimal descent position is set.
[0007]
In this case, the descent time of the electric device from the highest position to the vicinity of the optimum descent position, and when the electronic device is further lowered from the vicinity of the optimum descent position and adjusted to the optimum descent position, the adjustment descent time is added to the descent time. When the position is adjusted to the optimum lowering position by ascending from the vicinity of the optimum lowering position, the time obtained by subtracting the adjustment time from the lowering time is set and stored as the drive time of the electric device to the optimum lowering position.
[0008]
On the other hand, in the operation mode, the electric device is driven down using the operation panel based on the drive time up to the optimal lowering position of the electric device set and stored in the setting mode, and the electric device is driven down to the optimal lowering position. Has become.
[0009]
Such an optimal lowering position setting method is applicable when the lifting device and the switch in the operation panel for instructing the operation of the lifting device correspond one-to-one, but the optimal lowering device is set for each of the plurality of lifting devices. Since it is necessary to set the position, the setting operation becomes complicated, and it is necessary to provide an operation panel for each lifting device, the number of members of the lifting device increases.
[0010]
Therefore, it is desired that a single or a small number of switches in the operation panel simultaneously control the lifting and lowering of a plurality of lifting and lowering devices.
[0011]
However, when a plurality of lifting devices are controlled by a single or a small number of switches in the operation panel, particularly when the installation positions of the lifting devices are different, for example, the lifting devices are installed on an inclined high ceiling. In the case of or the installation position of the lifting device is the same height, but in the case of a staircase with a different optimum lowering position or a floor surface with a height difference, the difference in the lowering drive time of each lifting device, There is a problem that the setting of the drive time up to the descending position is complicated.
[0012]
In view of such a problem, the present invention can control the driving of a plurality of elevating devices with a single or a small number of operation panels, and when there is a height difference between the installation position of the elevating device and the optimal lowering position, respectively. It is an object of the present invention to provide an elevating device capable of setting an optimal descending position according to a height difference of the elevating device.
[0013]
[Means for Solving the Problems]
The lifting device according to the first aspect of the present invention includes a plurality of lifting means for individually driving up and down a plurality of suspended electric devices; a plurality of lifting control means for individually controlling the driving of the plurality of lifting means; Operation instructing means for instructing an operation of the elevating control means; and in response to an operation instruction from the operation instructing means, the elevating means is driven up and down to drive the electric device down to an optimal lowering position, and A first elevating control mode means provided in the elevating control means for detecting and storing a driving amount of the elevating means when the apparatus is driven to rise from an optimal lowering position to a highest elevating position; and an operation from the operation instruction means In accordance with an instruction, the electric device is controlled to lower the lifting device from the highest position to the optimum lowering position based on the driving amount of the lifting device detected and stored by the first lifting control mode device. Is characterized by comprising; a second lift control mode means provided in the elevating control unit that.
[0014]
The definitions and technical meanings of terms in the present invention and each of the following inventions are as follows.
[0015]
The elevating means includes a wire rope for suspending the electric device, a winding drum for winding the wire rope, and an electric motor for rotating the winding drum. The wire rope is driven by the electric motor to rotate forward or backward. Is wound up or fed out by a winding drum to drive the electric device up and down.
[0016]
The elevating control means rotates the electric motor forward, reverse, and stops to wind or unwind the wire rope wound on the winding drum of the elevating means, based on an operation instruction from an operation instruction means described later. A motor drive circuit for controlling the drive, a microprocessor for generating a control signal for controlling the motor drive circuit according to a drive mode described later, and a memory for storing various data for controlling the drive of the motor drive circuit. I have.
[0017]
The operation instructing means is for inputting a driving mode of the elevating control means and for inputting an elevating instruction of the suspended electric device, and includes a first elevating control mode means for setting an optimal lowering position of the elevating means. The drive mode selection setting can be instructed with the second lifting control mode means for driving the lifting means to the optimum lowering position set by the first lifting control mode means.
[0018]
The first elevating control mode means controls the driving of the elevating means to lower the suspended electric device from the highest position to the optimum lowering position, and after confirming the adjustment of the optimum lowering position, performs the optimum lowering operation. The ascending / descending means is driven to ascend from the position to the highest position, the amount of ascending drive from the optimum descending position to the highest position is detected, and the detected ascending drive amount is stored in a memory.
[0019]
Since this ascending drive amount is equal to the descending drive amount when driving from the highest ascending position to the optimal descending position, it is used as the descending drive amount in the second ascending and descending control mode means.
[0020]
The highest position is a position where the electric device is hoisted and raised by the raising / lowering means and stopped at the top dead center.
[0021]
The optimal lowering position is a position from the floor at which the electric equipment is driven down by the elevating means so that the maintenance and inspection work of the electric equipment can be executed most efficiently.
[0022]
The detection of the driving amount of the lifting / lowering means is performed by measuring a driving time of the lifting / lowering means from an optimum lowering position to an uppermost position by a timer function built in the microprocessor of the lifting / lowering control means, In this method, the number of rotations of the winding drum is detected, and the amount of drive from the optimum lowering position to the highest position of the lifting / lowering means is calculated based on the number of rotations.
[0023]
The second elevating control mode means is a mode for controlling the driving of the elevating means to lower the suspended electric device to an optimal lowering position for maintenance and inspection. Based on the driving amount from the optimum lowering position to the highest position detected and stored by the means, the lowering means controls the lowering means to drive down to the optimum lowering position.
[0024]
With the lifting device according to the first aspect of the present invention, the first lowering control mode means sets the optimum lowering position, and detects and stores the driving amount from the optimum lowering position to the highest raising position. The electric device is optimally lowered by lowering the lifting means by the second lifting control mode based on the driving amount from the optimum lowering position to the highest lifting position detected and stored by the first lifting control mode means. It is possible to drive down to the position. That is, the drive amount to the optimum lowering position can be easily and reliably detected only by detecting the drive amount from the set optimum lowering position to the highest raising position by performing the upward drive.
[0025]
The lifting device according to a second aspect of the present invention is the lifting device according to the first aspect, wherein the first lifting control mode means provided in the lifting control means controls the lifting means in response to an operation instruction from the operation instruction means. A lowering position setting function for controlling the drive to lower the electric device from the highest position to the vicinity of the optimum lowering position, and optimally lowering the electric device driven down to the vicinity of the optimum lowering position set by the lowering position setting function. And an adjustment function for adjusting the position of the actuator, wherein the drive amount of the lifting / lowering means when the ascent / descent means is driven to rise from the optimal lowering position adjusted by the adjusting function to the highest ascending position is detected and stored.
[0026]
The lowering position setting function is to lower the raising / lowering means when lowering the suspended electric device to near the optimum lowering position in order to set the raising / lowering control means to the optimal lowering position which is the first raising / lowering control mode. The amount is instructed from the operation instructing means to the elevating control means.
[0027]
The adjusting function raises or lowers the elevating means by an instruction from the operation instructing means so that the electric device driven downward to the vicinity of the optimal lowering position set by the lowering position setting function becomes the optimum lowering position. The adjustment is performed so as to stop at the optimal lowering position.
[0028]
In the first lifting / lowering control mode for setting the optimum lowering position, the lifting / lowering device according to the second aspect of the present invention is configured such that the lowering drive is performed once to the vicinity of the optimum lowering position, and the state is adjusted to the optimum lowering position state. Thus, the optimum lowering position can be set in a short time.
[0029]
The lifting device according to a third aspect of the present invention is the lifting device according to the first aspect, wherein the first lifting control mode means provided in the lifting control means controls the lifting means in response to an operation instruction from the operation instruction means. A drive control to lower the electric device from the highest position to the lowest position, and to maintain the state where the electric device is lowered to the lowest position for a predetermined time, and a lowest position by the lowest position maintenance function. After the predetermined time maintained at the position, adjusts the electric device to the optimal descending position by driving the elevating means up and down, and adjusts the electric device to the optimal descending position. The driving amount of the lifting / lowering means at the time of the upward driving is detected and stored.
[0030]
The lowermost position is a position where the electric device that has been driven down comes into contact with the floor or the like and cannot be further driven down.
[0031]
The detection of the descent drive to the lowest position is determined by detecting the slack of the wire rope suspending the electric device.
[0032]
In other words, if the high ceiling surface is inclined and the distance from the lifting device attached to the inclined ceiling surface to the floor surface is different, or the high ceiling surface to which the lifting device is mounted is the same surface but the floor surface is flat However, when there is a height difference, the amount of lowering drive of each lifting device when the electrical device is driven down and lowered to the floor surface is different.
[0033]
Therefore, the lifting device, which is the object of the lifting drive control, is driven to descend, and the electric equipment suspended by the lifting device is lowered to the lowest position on the floor. The lowest position maintaining function is to maintain the state of being lowered to the lowest position on the floor for a predetermined time.
[0034]
The lowest descending position maintaining function is a function of waiting until all the electric devices suspended by the elevating devices having different descending drive amounts of the descending drive control target are lowered to the floor surface at the lowest descending position.
[0035]
The adjustment function is the optimal lowering, which is the height at which maintenance and inspection are most easily performed from the lowest position, when the electric devices suspended from all the lifting devices to be controlled are driven down to the lowest position. The lifting device is raised to a position, for example, a height of 1.0 to 1.5 m from the floor surface, and the setting of the optimal lowering position is adjusted.
[0036]
With the lifting device according to the third aspect of the present invention, even when there is a height difference between the mounting surface of the lifting device and the surface at the lowest position of the electric device, it is possible to set the optimum lowering position according to the height difference. .
[0037]
The lifting device according to a fourth aspect of the present invention is the lifting device according to the first aspect, wherein the first lifting control mode means provided in the lifting control means controls the lifting means in response to an operation instruction from the operation instruction means. A drive control to lower the electric device from the highest position to the lowest position, and to maintain the state where the electric device is lowered to the lowest position for a predetermined time, and a lowest position by the lowest position maintenance function. After elapse of a predetermined time maintained at the position, the drive control of the elevating means is performed, and the elevating means from the lowest position to the highest position when the electric device is raised from the lowest position to the highest position. A drive amount detection function for detecting a drive amount; and a calculation function for calculating a drive amount detected by the drive amount detection function from the highest position to the optimum lower position of the electric device. It is characterized by storing the driving amount of up to optimum lowered position from the uppermost position.
[0038]
The drive amount detection function is to drive all lifting / lowering devices to be controlled to the lowest position when there is a difference in height between the mounting surface of the lifting / lowering device and the surface at the lowest position. This is a function of driving the ascending device to the ascending position and detecting the drive amount of each elevating device to the highest position.
[0039]
The calculating function is from the driving amount from the lowest position to the highest position detected by the driving amount detecting function from the lowest position to the highest position, from the lowest position to the optimum lowering position (about 1.0 to 1.5 m from the floor). Is subtracted to obtain the driving amount from the highest position to the optimum lowering position.
[0040]
The driving amount from the lowest position to the optimum lowering position is a value that is calculated in advance from the rotation speed of the electric motor or the winding drum.
[0041]
With the lifting device according to the fourth aspect of the present invention, even when there is a height difference between the mounting surface of the lifting device and the surface at the lowest position of the electric device, it is possible to set the optimum lowering position according to the height difference. .
[0042]
A lifting device according to a fifth aspect of the present invention includes a plurality of lifting means for individually driving up and down a plurality of suspended electric devices; a plurality of lifting control means for individually driving and controlling the plurality of lifting means; An operation instructing means for instructing an ascending / descending drive operation to the ascending / descending control means; and operating the ascending / descending means to ascend / descend the electric device from the highest position to the lowest position in accordance with the operation instruction from the operation instruction means Driving and measuring the descent time, using the measured descent time and the descent distance from the highest position to the lowest position of the electrical device, from the highest position to the optimum descent position of the electrical device A first elevating control mode means provided in the elevating control means for calculating and setting a driving amount; and an electric instruction set by the first elevating control mode means in response to an operation instruction from the operation instruction means. A second elevation control mode means provided in the elevation control means for controlling the electric device to descend and drive to the optimal descending position on the basis of the driving amount from the ascending position to the optimal descending position. I have.
[0043]
The descent time measurement measures the descent drive time from the highest position to the lowest position of the electrical device.
[0044]
When the electric device suspended by the elevating means is moved up and down by a certain distance, when the electric device is driven up while the rotation speed of the motor is constant, the ascending drive time (winding time) is the electric device. The difference is relatively large depending on the weight of the electric device, but the difference in the descent drive time (fall time) when the descent drive is performed is relatively small due to the weight of the electric device.
[0045]
For this reason, when raising and lowering a heavy electric device, a descent time with a small error when the descent drive is performed from the highest position to the lowest position is used.
[0046]
The descending distance is a descending distance at which the electric device is driven to descend from the highest position to the lowest position.
[0047]
This descending distance is substantially the same as the distance between the lifting means installed on the ceiling surface and the floor surface, and is measured at the time of installation of the lifting device, or measured by the amount of wire rope unreeled from the lifting means. There is.
[0048]
An average descent time of the unit distance is calculated from the descent distance and the descent time, for example, a descent time per m of the descent distance, and the calculated descent time per m is multiplied by a descent distance from the highest position to the optimum descent position. Then, the lowering drive time from the highest position to the optimum lowering position is calculated and set. Alternatively, the descent time corresponding to the distance from the floor optimal for maintenance is subtracted from the descent time, and the descent drive time from the highest position to the optimum descent position is calculated and set.
[0049]
With the lifting device according to the fifth aspect of the present invention, an error in lowering the driving amount to the optimum lowering position can be minimized particularly when lifting and lowering a heavy electric device.
[0050]
The lifting device according to a sixth aspect of the present invention is the lifting device according to the fifth aspect, wherein the first lifting and lowering control mode means provided in the lifting and lowering control means calculates a driving amount of the electric device up to an optimal lowering position. At this time, the descending speed per unit distance is calculated according to the descending distance from the highest position to the lowest position, and the calculated descending speed per unit distance is used to calculate the descending speed from the highest position to the optimal descending position. It is characterized in that a drive amount according to the descending distance is set for correction calculation.
[0051]
The descending speed of each unit distance is calculated by measuring the descending distance of the electric device, for example, the total descending time of each unit distance at intervals of 1 to 2 m from the highest position, and calculating the descending time of each unit distance from the total descending time of the unit distance. Is calculated.
[0052]
As the descending distance of the electric equipment becomes longer, the wire rope that holds the electric equipment also becomes longer, and this wire rope is connected to the drum at the terminal side that is connected to the drum and at the tip end that holds the electric equipment. Winding diameter is different.
[0053]
Therefore, even if the number of rotations of the drum is constant, the feeding length of the wire rope per rotation is different between the tip side and the end side of the wire rope, and the descent when the electric device is driven down from the highest position. The speed and the lowering speed when the electric device is driven to lower to the lowest position are different.
[0054]
For this purpose, the descending speed for each unit distance is measured in accordance with the descending distance, and when setting the descending time to the optimal descending position, the difference in the descending speed for each unit distance is corrected and set.
[0055]
In the lifting device according to the sixth aspect of the present invention, it is possible to set a drive amount with a small error up to an optimum descending position in consideration of a change in the descending speed depending on the descending distance.
[0056]
The lifting device according to a seventh aspect of the present invention is the lifting device according to any one of the first to sixth aspects, wherein the plurality of lifting control means include the first lifting control in addition to an operation instruction from the operation instruction means. An external setting device for operating and instructing the mode means can be connected, and the external setting device controls the driving of the first lifting / lowering control mode means to detect and store a driving amount of the lifting / lowering means to an optimum lowering position. And
[0057]
The lifting device according to an eighth aspect of the present invention is the lifting device according to any one of the first to sixth aspects, wherein the plurality of lifting control units include the first lifting control unit in addition to an operation instruction from the operation instruction unit. Remote control signal receiving means for receiving a remote control signal for instructing operation is provided, and the first elevation control mode means is driven and controlled by a remote control signal from the remote control signal transmitting means with respect to the remote control signal receiving means. Then, the drive amount of the lifting / lowering means up to the optimal lowering position is detected and stored.
[0058]
An external setting device can be individually connected to the elevation control means of a plurality of elevation devices which are elevation control objects by the operation instruction means, and a remote control signal receiving means is provided in the elevation control means. I have.
[0059]
The external setting device is connected to each of the individual elevation control means, and drives and controls the elevation control means in accordance with an operation instruction from the external setting device to set an optimum descent position.
[0060]
The remote control signal receiving means is provided for each individual elevation control means, receives a remote control signal from the remote control signal transmission means, and drives and controls the elevation control means based on the received infrared remote control signal. Then, the optimal lowering position setting is set. The remote control signal transmitting means transmits an infrared remote control signal to the remote control signal receiving means.
[0061]
When the optimal descending positions of all the elevators to be controlled are set by an instruction from the operation instruction means, an error occurs in the optimal descending position between the elevators due to a manufacturing error of the elevators and a loss error at the time of the elevator drive. .
[0062]
Therefore, the adjustment of the optimal lowering position can be performed directly from the external setting device or the remote control signal transmitting means to the elevating control means for each elevating device, and the error between the elevating devices can be minimized.
[0063]
The remote control signal includes an identification code and code data for each lifting device and lifting and lowering drive control data.
[0064]
With the lifting devices according to the seventh and eighth aspects of the invention, it is possible to adjust and set the optimum lowering position individually for each lifting device, to eliminate errors between the lifting devices, or to set conditions for each lifting device. Further, by using the remote control signal transmission / reception means, it is possible to remotely adjust and set the optimal descending position of each elevating device installed at a high place.
[0065]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, a schematic configuration of a lifting device according to the present invention will be described with reference to FIG.
[0066]
The elevating device main body 21 is installed on the ceiling surface 20a. The lifting device main body 21 includes an electric motor 22, a winding drum 23 driven to rotate by the electric motor 22, a wire rope 24 wound and wound around the winding drum 23, and An elevating / lowering body 30 hung at the tip of the wire rope 24 and attaching and holding, for example, an illumination device 31 of an electric device, an elevating control unit 26 for driving and controlling the electric motor 22, and lighting control of the illumination device 31. The lighting control section 27 is provided.
[0067]
The wire rope 24 is drawn around by a plurality of wire guards 25a and 25b, and hangs vertically from the center of the bottom surface of the elevating device main body 21 in the drawing. The lighting fixture 31 is attached to and held by the elevating body 30 suspended at the tip of the wire rope 24, and a power receiving terminal 29 for supplying lighting power to the lighting fixture 31 is provided. The power receiving terminal 29 is electrically connected to a power supply terminal 28 provided on the lifting / lowering device main body 21 in a state where the lifting / lowering body 30 is wound up and stored and fixed in the lifting / lowering device main body 21. The power supply terminal 28 is supplied with lighting power from the lighting control unit 27.
[0068]
The electric motor 22 is driven forward or backward under the control of a lifting control unit 26 to take up or unwind the wire rope 24 wound around the winding drum 23, thereby moving the lifting unit up and down. The lighting fixture 31 attached to and held by 30 is moved up and down.
[0069]
The elevating device main body 21 is attached and fixed to a ceiling surface 20 a of a high ceiling, and the lighting fixture 31 suspended by the elevating device main body 21 is turned on by the lighting switch provided on the wall surface. Is driven to control the lighting, and the operation panel provided on the wall controls the driving of the electric motor 22 via the elevation control unit 26 to thereby control the elevation of the lighting fixture 31 together with the elevation body 30.
[0070]
When performing maintenance and inspection such as lamp replacement of the lighting fixture 31 attached to and held by the lifting device main body 21, the lighting device 31 is wound around the winding drum 23 via the lifting control unit 26 by the operation panel on the wall surface. The electric motor 22 is driven so as to rotate in the direction in which the wire rope 24 is fed out. As a result, the wire rope 24 is fed out from the winding drum 23, and the elevating body 30 and the lighting fixture 30 descend.
[0071]
The lighting fixture 30 attached to and held by the elevating body 30 has a predetermined height from the floor surface 20b, and a height at which maintenance and inspection workers can easily perform maintenance and inspection, for example, a height of about 1.0 to 1.5 m from the floor surface. To stop.
[0072]
Next, the configuration of the elevation control unit 26 will be described with reference to FIG. The elevation control unit 26 includes a microprocessor (hereinafter, referred to as an MPU) 11 that generates various control signals for rotationally controlling the electric motor 22, a memory 12 that stores various data used in the MPU 11, It comprises a motor drive circuit 13 for controlling the rotation of the electric motor 22 by a control signal.
[0073]
The MPU 14 includes a sequence program for generating various control signals and a timer 14 for measuring time.
[0074]
An operation switch 15 for instructing a lifting control unit 26 of a plurality of lifting device main bodies 21 to raise, lower, and stop the lifting / lowering body 30 that is a rotational driving direction of the electric motor 22; A first raising / lowering control mode for setting the optimal lowering position, and a second raising / lowering control mode for driving the lifting / lowering body 30 to the optimum lowering position set in the optimum lowering position setting mode during maintenance. And a mode changeover switch 16 for selecting and setting the operation mode.
[0075]
By the operation switch 15 and the mode changeover switch 16, the plurality of lifting / lowering device main bodies 21 are used for the first lifting / lowering control mode for setting an optimal lowering position when the lighting fixture 31 is driven to descend, and for maintenance of the lighting fixture 31. A selection is made between a second raising / lowering control mode for lowering and driving to the optimum lowering position set in the first raising / lowering control mode, and an instruction for a raising / lowering operation is given.
[0076]
When the first elevating control mode of the optimal lowering position setting is selected and set by the mode change switch 16, the electric motor 22 is driven via the motor drive circuit 13 under the control of the MPU 11, A maintenance stop position input device 17a for inputting a position for performing maintenance inspection by lowering the lighting fixture 31 attached and fixed to the elevating body 30 is connected.
[0077]
Furthermore, a lock detector 17b, a slack detector 17c, an infrared receiver 17d, an external setting device receiver 17e, and a rotation detector 17f of the electric motor 22 are connected to each of the plurality of lifting device main bodies 21. The rotation detector 17f is set as needed.
[0078]
The lock detector 17b is for detecting a state where the elevating body 30 is fixedly locked by a lock mechanism (not shown) provided on the elevating apparatus main body 21 when the elevating body 30 is raised. .
[0079]
The slack detector 17c detects the slack of the wire rope 24 when the elevating body 30 is driven downward and the lighting fixture 31 attached and fixed to the elevating body 30 comes into contact with the floor surface 20b.
[0080]
The infrared receiver 17d receives an infrared control signal for remote operation, and remotely controls the drive of the elevating device main body 21 by the infrared control signal.
[0081]
The external setting device connection section 17e is connected to the external setting device via a wire, receives a control signal from the external setting device, and controls the drive of the lifting / lowering device main body 21.
[0082]
The rotation detector 17f detects the rotation of the electric motor 22 or the winding drum 23 that is driven to rotate by the electric motor 22. Generally, rotation is detected using a photodiode or the like.
[0083]
The lifting device main body 21 and the lighting fixtures 31 are attached and fixed at predetermined intervals to the ceiling surface 20a of the high ceiling in a one-to-one relationship. The plurality of lifting / lowering device main bodies 21 are driven and operated by the operation switch 15 and the mode switch 16 provided on the wall surface. That is, in the mode selected and set by the mode changeover switch 16 provided on the wall surface, by operating and inputting the operation switch 15, the plurality of lifting / lowering device main bodies 21 can be driven up and down.
[0084]
In addition, the lock detector 17b, the slack detector 17c, the infrared receiver 17d, the external setting device connection part 17e, and the rotation detector 17f are provided in each lifting device main body 21, respectively.
[0085]
The lifting / lowering operation of the lighting fixture 31 suspended by the lifting / lowering device main body 21 having the above-configured lifting / lowering device main body 21 fixed to a high ceiling will be described with reference to FIG. 3.
[0086]
3 (a) and 3 (b) show a lighting apparatus in which a plurality of lifting / lowering device bodies 21, 21,... Are mounted and fixed on a ceiling surface of the same height of a high ceiling, and driven up and down by the lifting / lowering device body 21. Reference numerals 31 and 31 denote states in which the floor surface 20b having no height difference is illuminated.
[0087]
.. Are driven by an operation switch 15 and a mode changeover switch 16.
[0088]
When the lowering operation is instructed from the operation switch 15 in a state in which the operation mode is selected and set by the mode changeover switch 16, the MPU 11 causes the motor drive circuit 13, The driving of the motor 22 is controlled so that the lighting fixture 31 is driven to descend, and as shown in FIG. 3A, is lowered and stopped at a maintenance stop position which is an optimal lowering position for performing maintenance and inspection.
[0089]
When the maintenance and inspection of the lighting fixture 31 at the maintenance stop position is completed, the MPU 11 drives and controls the motor drive circuit 13 and the electric motor 22 in response to an ascending operation instruction from the operation switch 15 to switch the lighting fixture 31. By ascending drive, as shown in FIG. 3B, it is raised from the maintenance stop position to the uppermost limit position and stopped.
[0090]
When the luminaire 31 rises to the upper limit position, the elevating body 30 is locked by a lock mechanism (not shown), and the power receiving terminal 29 is electrically connected to the power supply terminal 28. When the lock by the lock mechanism is detected by the lock detector 17b, the MPU 11 performs a process of stopping the rotation drive of the electric motor 22.
[0091]
In such an elevating device, conventionally, the position setting for stopping the lighting fixture 31 at the maintenance stop position is performed by using the mode changeover switch 16 to switch and select the MPU 11 to the setting mode. The electric motor 22 is driven to the maintenance stop position using the lowering, stopping, and raising switches of the operation switch 15, and the timer 14 counts the driving time of the electric motor 22 to the maintenance stop position, and stops the maintenance. At the time of position adjustment, it is necessary to add / subtract the drive time counted by the timer 14, and it takes time to preliminarily set the drive amount up to the maintenance stop position, which requires complicated work.
[0092]
Further, as shown in FIGS. 3C and 3D, the lifting device main body 21 is fixedly mounted on a ceiling surface having the same height, but the lighting suspended from the lifting device main body 21. Immediately below the elevating device 31, when equipment is installed on the floor surface or when there is a difference in height such as a stair surface, or as shown in FIG. When the ceiling is a sloping ceiling, the maintenance stop positions of the lighting fixtures suspended from the lifting device main bodies 21 are different, and setting the optimal maintenance stop position for each lifting device main body 21 is a very complicated task. It was.
[0093]
Therefore, in the present invention, in the setting mode, the lighting fixture 31 is driven to descend and, for example, as shown in FIG. The driving time of the electric motor 22 at the time of ascending drive is measured and detected by the timer 14. In other words, the drive time from the optimal maintenance stop position to the uppermost limit position is substantially the same as the drive time from the uppermost position to the optimal maintenance stop position. Is set, and the drive time from the maintenance optimum stop position to the uppermost limit position is measured, and the time is used as the lighting fixture descent reference position data at the time of maintenance and inspection in the operation mode.
[0094]
This makes it possible to easily and reliably set the maintenance stop position of the elevating device main body 21 provided on the floor or the inclined ceiling.
[0095]
The operation of the MPU 11 for setting the optimal lowering position in the setting mode, which is the operation for setting the maintenance stop position, will be described with reference to FIG.
[0096]
In step S1, the MPU 11 determines whether or not the mode switch 16 has been switched to the setting mode. If it is determined that the mode has been switched to the setting mode, the MPU 11 drives the lifting / lowering device body 21 downward in step S2, thereby The position at which the lighting fixture 31 is stopped to descend is input from the maintenance stop position input device 17a. The input of the descending stop position sets the drive time of the electric motor 22 when the lighting fixture 31 is driven to descend to the maintenance stop position.
[0097]
Next, in step S3, it is determined whether or not a lowering operation instruction is input from the operation switch 15, and when the lowering operation instruction is input from the operation switch 15, the MPU 11 drives the electric motor 22 via the motor drive circuit 13 to take up the winding drum. The wire rope 24 wound around 23 is driven to rotate in the reverse rotation direction in which the wire rope 24 is fed out, and the timer 14 starts counting in step S5. Before the electric motor 22 is driven in the reverse direction in step S4, the motor is driven forward once to release the lock mechanism (not shown) that locks the elevating body 30, and the lock mechanism is released. Is detected by the lock detector 17b, the electric motor 22 is driven to rotate in the reverse direction.
[0098]
Next, in step S6, a comparison is made until the count value of the timer 14 reaches the drive timer set value of the electric motor 22 set in step S2. When the count value of the timer 14 reaches the set timer value, in step S7. , The MPU 11 stops the rotation of the electric motor 22 via the motor drive circuit 13.
[0099]
In step S8, the maintenance and inspection person determines whether the position of the lighting fixture 31 fixed to the elevating body 30 when the electric motor 22 is stopped is the optimum descending position which is the maintenance stop position.
[0100]
In step S8, if the maintenance inspector determines that the stop position is too high to perform maintenance, the operation switch 15 is operated to move the electric motor 22 to lower the lifting body 30 in step S9. The reverse rotation drive is performed again, and the stop position determination in step S8 is performed again. If it is determined in step S8 that the maintenance / inspection person is too low for maintenance at the stop position, the operation switch 15 is operated in step S10 to raise the elevating body 30 by the electric motor. 22 is driven forward, and the stop position determination in step S8 is performed again.
[0101]
That is, in steps S8 to S10, the maintenance and inspection person controls the operation of the electric motor 22 from the MPU 11 via the motor drive circuit 22 by the operation switch 15 so that the lifting / lowering body 30 is at the optimum lowering position which is the maintenance position. Adjustment is made so that the stop position of the lifting / lowering body 30 becomes a desired optimum lowering position.
[0102]
If it is determined in step S8 that the adjusted stop position of the elevating body 30 is the desired optimum lowering position, the maintenance and inspection person stops driving the electric motor 22 using the operation switch 15 in step S11. An operation instruction is issued, and based on the stop operation instruction, the MPU 11 stops driving the electric motor 22 via the motor drive circuit 13. The point where the electric motor 22 stops is the optimal lowering position of the lighting fixture 31.
[0103]
When the electric motor 22 is stopped, the MPU 11 resets the timer 14 in step S12, and determines in step S13 whether a rising operation instruction has been input from the operation switch 15. When it is determined that the ascending operation instruction is input from the operation switch 15, the MPU 11 winds up the electric rope 22 wound around the winding drum 23 via the motor drive circuit 13 in step S14. Then, the elevating body 30 is driven in the normal rotation direction to rise, and time counting by the timer 14 is started.
[0104]
Next, in step S15, the MPU 11 determines whether the lifting body 30 has reached the uppermost position. The lock detector 17b detects that the elevating body 30 has reached the uppermost limit position by detecting that the elevating body 30 is driven up and locked by a lock mechanism (not shown) provided in the elevating device main body 21. Then, the determination is made by supplying the lock detection signal to the MPU 11.
[0105]
If it is determined in step S15 that the elevating body 30 has been raised to the highest position, in step S16, the MPU 11 stops the rotation of the electric motor 22 via the motor drive circuit 13 and stops the timer 14 Stop time counting.
[0106]
Next, in step S17, the MPU 11 causes the memory 12 to store the timer count value whose time count has been stopped in step S16. In this step S17, the timer count value from the optimum lowering position to the highest ascending position is stored as a descending drive timer value of the elevating body 30 from the highest ascending position to the optimum lowering position, and the operation in the setting mode ends.
[0107]
Next, the operation of the MPU 11 in the operation mode in which the elevating body 30 is driven down to the optimal lowering position for maintenance and inspection after the storage of the descent drive timer value to the optimum lowering position of the elevating body 30 is completed in this setting mode is shown. 5 will be described.
[0108]
In step S21, the MPU 11 determines whether or not the mode changeover switch 16 is set to the operation mode. If it is determined that the operation mode is set, the MPU 11 determines in step S22 whether or not the operation switch 15 has issued a downward operation instruction.
[0109]
If it is determined in step S22 that the operation switch 15 has issued the descending operation instruction, the MPU 11 reads the descending drive timer value up to the optimal descending position stored in the memory 12 in step S23, and proceeds to step S24. The timer 14 is reset, and the electric motor 22 is driven to rotate in the reverse direction via the motor drive circuit 13 in step S25.
[0110]
Next, in step S26, it is determined whether or not the timer count value of the timer 14 is the same as the timer value read in step S23. If the timer count value is the same as the timer value read in step S23, the MPU 11 determines in step S27. Stops the rotation of the electric motor 22 via the motor drive circuit 13.
[0111]
In other words, the electric motor 22 is rotationally driven and the elevating body 30 is driven to descend based on the ascending driving time from the optimum descending position to the highest ascending position in the above-described setting mode, so that the electric motor 22 is attached and fixed to the elevating body 30 The illuminating device 31 can be stopped to descend to the optimal descending position.
[0112]
The lighting fixture 31 stopped at the optimal lowering position in step S27 is subjected to maintenance and inspection by a maintenance and inspection staff in step S28. When the maintenance and inspection in step S28 is completed, the maintenance and inspection staff issues an ascending operation instruction from the operation switch 15 in order to drive the elevating body 30 up. The MPU 11, which has detected the raising operation instruction of the operation switch 15 in step S29, drives the electric motor 22 to rotate forward through the motor drive circuit 13, winds the wire rope 24 with the winding drum 23, and moves the elevating body 30. Drive up.
[0113]
Next, the lifting / lowering body 30 driven upward in step S30 is raised / lowered to the lifting / lowering apparatus main body 21, the power receiving terminal 29 and the power supply terminal 28 are electrically connected, and the lifting / lowering body 30 is locked by a lock mechanism (not shown). Is detected by the lock detector 17b, and when the lock detection information is transmitted to the MPU 11, the MPU 11 stops the forward drive of the electric motor 22 via the motor drive circuit 13, and ends the operation mode. I do.
[0114]
That is, in the operation mode, for maintenance and inspection, the lighting fixture installed on the high ceiling is controlled to be lowered and driven based on the driving time to the optimum lowering position which is the predetermined maintenance position set in the setting mode, and is optimized. The lowering drive is quickly performed to the lowering position, and in the ascending drive after the maintenance and inspection, the maintenance and inspection work can be easily performed by locking the elevating body to the lifting and lowering device main body.
[0115]
Next, another embodiment of the lifting apparatus according to the present invention will be described with reference to FIG. As described with reference to FIGS. 3C to 3E, the lifting device according to the other embodiment has a floor surface on which the lifting device is installed on an inclined ceiling surface or a lighting fixture that has been lowered by the lifting device. Is suitable for setting the drive amount to the optimal lowering position for each lifting device when the driving amount to the optimal lowering position differs for each lifting device.
[0116]
The MPU 11 determines in Step S31 that the mode changeover switch 16 is in the setting mode. If it is determined that the current mode is the setting mode, it is determined in step S32 whether a downward operation instruction has been issued from the operation switch 15. When it is determined that the descending operation instruction is given, the MPU 11 drives the electric motor 22 in the reverse direction via the motor drive circuit 13 in step S33, and pays out the wire rope 24 wound around the winding drum 23. The lighting fixture 31 fixed to the suspended elevating body 30 is driven to descend.
[0117]
Next, in step 34, the MPU 11 determines whether the slack detector 17c has detected slack. That is, when the lighting fixture 31 attached to the lifting / lowering body 30 driven downward by the electric motor 22 driven in reverse rotation in step S33 descends and reaches the floor surface, the lifting / lowering body 30 and the lighting fixture 31 are suspended. The loose wire rope 24 is loosened. By detecting the slack with the slack detector 17c, it is possible to detect and determine the state in which the lighting fixture 31 suspended by the elevating body 30 has reached the floor surface.
[0118]
When the slack is detected by the slack detector 17c, the drive of the electric motor 22 is stopped via the motor drive circuit 13, and the state of the elevating body 30 and the lighting fixture 31 that has reached the floor surface in step S35 is determined. Allow time to maintain.
[0119]
As described above, for example, the lifting device main body 21 provided on the ceiling surface is maintained at the same height position as shown in FIG. If equipment is installed immediately below one of the suspended lighting fixtures 31, or if the suspended lighting fixture 31 is directly below the stairs, the equipment is suspended by each lifting device main body 21. The driving amount of the wire rope 24, the driving amount of the electric motor 22, the feeding time, and the like until the respective lighting fixtures 31 are lowered to reach the facility surface, the floor surface, and the stair surface are different. For this reason, in this setting mode, the waiting time until the looseness detectors 17c of all the lifting / lowering apparatus main bodies 21 whose optimum descending position is to be set detects the looseness.
[0120]
When the maintenance of the predetermined time in step S35 is completed and it is confirmed that the slack detectors 17c of all the lifting / lowering apparatus main bodies 21 to be set are detected to be slack, the MPU 11 sends the signal via the motor drive circuit 13 in step S36. The electric motor 22 is driven to rotate forward, the wire rope 24 wound around the winding drum 23 is wound, and the suspended lifting body 30 and the lighting fixture 31 are driven to rise.
[0121]
It is determined whether the lighting fixture 30 attached to the elevating body 30 suspended by the forwardly driven electric motor 22 has reached a maintenance position which is a predetermined maintenance inspection position. That is, the lighting fixture 30 attached to the elevating body 30 is raised from a state where the lighting apparatus 30 reaches a floor or the like having a height difference to a position 1.0 to 1.5 m above the floor at the maintenance position, for example. The determination of the rise of the maintenance position to a position of about 1.0 to 1.5 m is made based on the driving time of the electric motor 22 or the rotation speed of the electric motor 22 or the winding drum 23 detected by the rotation detector 17f. Pre-set using
[0122]
If it is determined in step S37 that the drive has been raised to the predetermined maintenance position, the MPU 11 stops the forward drive of the electric motor 22 via the motor drive circuit 13 in step S38.
[0123]
Next, in step S39, the MPU 11 determines whether or not an ascending operation instruction has been input from the operation switch 15. If it is determined that the ascending operation instruction has been input, the MPU 11 corrects the electric motor 22 via the motor drive circuit 13 in step S40. The wire rope 24 wound around the winding drum 23 is wound, the lighting fixture 31 fixed to the suspended elevating body 30 is driven up, and the timer count by the timer 14 is counted. Start.
[0124]
Next, in step S41, the MPU 11 determines whether or not the lock detector 17b has detected that the lifting / lowering body 30 has reached the lifting / lowering device main body 21 and locked by a lock function (not shown). When the lock is detected by the lock detector 17b, the MPU 11 stops the forward rotation drive of the electric motor 22 via the motor drive circuit 13 and stops the timer count of the timer 14 in step S42.
[0125]
In this step S42, the timer count value at the time of stopping the timer count was measured by the timer 14 until each of the lifting and lowering device main bodies 21 was driven up from the optimal lowering position, which is the maintenance position, and was locked by the lifting and lowering device main body 21. The time is stored in the memory 12 of each lifting / lowering apparatus main body 21 in step S43, and the setting mode ends.
[0126]
That is, the time stored in the memory 12 is the drive amount of the electric motor 22 up to the optimal lowering position of the lighting fixture 31 attached to the elevating body 30 during maintenance.
[0127]
As described above, the height difference between the mounting surface of the elevating device and the height difference of the maintenance floor makes it easy to drive the lighting device suspended for each elevating device to the optimal lowering position, which is the optimal maintenance position. Can be set.
[0128]
Next, an application example of another embodiment of the present invention will be described with reference to FIG. Steps S51 to S55 in the application example of FIG. 7 are the same as steps S31 to S35 described with reference to FIG.
[0129]
In step S55, after maintaining the state in which the lighting fixtures 31 suspended from all the lifting / lowering device main bodies 21 have reached the floor surface for a predetermined time, the MPU 11 receives an ascending operation instruction input from the operation switch 15 in step S56. If it is determined that the operation has been performed, and if it is determined that the ascending operation instruction has been input, in step S57, the electric motor 22 is driven to rotate forward through the motor drive circuit 13 to rotate the wire rope 24 wound around the winding drum 23. The lighting fixture 31 fixed to the elevating body 30 that has been wound and suspended is driven to rise, and the timer 14 starts counting timers.
[0130]
Next, in step S58, the MPU 11 determines whether or not the lock detector 17b has detected that the lifting / lowering body 30 has reached the lifting / lowering device main body 21 and has been locked by a lock function (not shown). When the lock is detected by the lock detector 17b, the MPU 11 stops the forward rotation drive of the electric motor 22 via the motor drive circuit 13 and stops the timer count of the timer 14 in step S59.
[0131]
In step S59, the MPU 11 calculates the timer value up to the optimal maintenance position of the elevating body 30 in step S60 using the timer count value at the time of stopping the timer count.
[0132]
The calculation of the timer value up to the optimal maintenance position starts counting in step S57, and the timer count value counted in step S59, that is, the lighting fixture 31 suspended for each of the lifting / lowering device main bodies 21 is moved from the floor surface. The time obtained by subtracting the time required for raising the lifting device main body 21 from the time when the lifting device main body 21 is driven up to the optimum maintenance position (the optimum lowering position, for example, a height of 1 m) is the maximum lift in which the lifting device main body 21 is locked. The drive time from the position to the optimal lowering position, which is the optimal maintenance position, is obtained.
[0133]
The drive time to the optimum maintenance position of each lifting / lowering device main body 21 calculated in step S60 is stored in the memory 12 of each lifting / lowering device main body 21 in step S61, and the setting mode is ended.
[0134]
In each of the above-described embodiments, the up-and-down drive amount control of the elevating body 30 from the optimal lowering position to the highest position, from the lowest position to the highest position, or from the highest position to the optimum lowering position is performed by the timer 14. Although the description has been given using the measurement time, the rotation number of the electric motor 22 or the winding drum 23 may be used by the rotation detector 17f. Further, by using both the timer counted by the timer 14 and the number of rotations detected by the rotation detector 17f, it is possible to perform a more accurate elevation drive amount control.
[0135]
Next, another embodiment of the lifting device according to the present invention will be described with reference to FIG. In the lifting device described above, the ascending drive time from the optimal maintenance stop position to the uppermost limit position is substantially the same as the descending drive time from the uppermost position to the optimal maintenance stop position. The ascending drive time to the upper limit position is measured, and this time is used as reference position data for descending drive to the maintenance position for maintenance and inspection in the operation mode, but these elevating devices can handle hanging loads of up to 12 kg. It has become. When the suspended electric device is relatively light, the rising drive time from the optimum lowering position, which is the optimum stop position for maintenance, to the highest rising position, and the lowering driving time from the highest rising position to the optimum lowering position are substantially the same. It can be.
[0136]
However, when the weight of the lighting equipment 31 increases, the time of the ascending drive is different, and the difference in the ascending time due to the weight causes an error in the setting of the optimum descending position. The differences were experimentally found to be minor.
[0137]
Therefore, as shown in FIG. 8, a descent time B is measured in which the lighting fixture 31 is lowered by a descent height A which is a descent distance from the highest position on the ceiling surface 20a to the lowest position on the floor surface 20b. Subtracting the optimum descent position from the measured descent time B, for example, descent time C from the maintenance optimum position 1.5 m from the floor surface to the floor surface, the descent time from the highest descent position to the optimum descent position ΔB−C = B − (B / A × 1.5 m)} is required.
[0138]
Table 1 shows an example of measurement results of the measurement of the elevation time B of the elevation height A and the descent time C from the optimum position of the maintenance calculated from the elevation height A and the elevation time B to the floor surface. .
[0139]
[Table 1]

From Table 1, for example, when the descent height A is 6 m, the descent time B from the highest position to the lowest position is 121 s (seconds), and the descent time C from the floor to 30 s is 30 s. The descending time (BC = 121 s-30 s = 91 s) is the descending time to the optimal descending position (6 m-1.5 m) when the elevation height is A6 m.
[0140]
Also, as can be seen from Table 1, as the elevation height A increases, that is, as the descent distance increases, for each unit distance, for example, 2 m where the elevation height A is 4 to 6 m, the descent time B is longer. While 44 s is required from 77 s to 121 s, 2 m where the elevation height A is 10 to 12 m requires 56 s where the descent time B is 220 s to 276 s.
[0141]
That is, as the elevation height A increases, the descending time B of the suspended lighting fixture 31 increases, that is, as the descending distance increases, the descending speed decreases.
[0142]
This is because as the descending distance becomes longer, the wire rope 24 suspending the lighting equipment 31 becomes longer, and the winding diameter of the wire rope 24 wound around the winding drum 23 changes.
[0143]
In other words, since the winding diameter of the wire rope 24 wound around the winding drum 23 at the start of the descent is large, the length of the wire rope 24 that is paid out in one rotation becomes long. This is because the winding diameter of the wound wire rope 24 becomes smaller, and the payout length per rotation of the winding drum 23 becomes shorter.
[0144]
As a result, an error due to the descending distance may occur in the optimal descending position set by subtracting the descending time C from the descending time B to the floor surface.
[0145]
Then, the wire rope 24 is unreeled from the winding drum 23, and the descent time per unit distance is calculated according to the distance that the lighting fixture 31 is driven down, and the floor time is calculated using the descent time per unit time. By correcting the descending time C up to this, it is possible to set the optimal descending position according to the elevation height A.
[0146]
According to this other embodiment, the descending drive amount at the optimal descending position can be easily set with respect to the fluctuation of the descending time according to the descending distance of the lighting fixture 31.
[0147]
The lifting height A is set by actually measuring the distance of the floor surface 20b from the installation position of the lifting device main body 21 when the lifting device is installed, or by rotating and driving the wire rope 24 according to the feeding of the wire rope 24. There is a method of detecting by using a sensor that measures the extension distance.
[0148]
Next, an application form for setting the optimum lowering position, which is the optimum maintenance position of the lifting device according to the present invention, for each lifting device will be described with reference to FIG.
[0149]
As shown in FIG. 9, the lifting apparatus main body 21 according to the present invention is configured such that individual lighting fixtures 31 a to 31 n suspended by a plurality of lifting apparatus main bodies 21 a to 21 n installed in a high ceiling are operated by a single operation switch. It is designed to be driven up and down at 15.
[0150]
An error occurs in the setting of the maintenance position, which is the optimal lowering position, between the lifting / lowering device main bodies 21a to 21n due to various components constituting the plurality of lifting / lowering device main bodies 21a to 21n, errors during manufacturing, and loss errors during vertical driving. . These errors need to be individually adjusted for each of the lifting device main bodies 21a to 21n.
[0151]
Therefore, an infrared receiver 17d for receiving a remote control signal by infrared rays from an infrared control signal transmitter (hereinafter, simply referred to as a remote controller transmitter) 42 is provided to the lifting controller 26 of the lifting device main bodies 21a to 21n, or an external setting. A setting unit connection unit 43 for receiving a control signal by wire from the unit 41 is provided.
[0152]
The remote control transmitter 42 includes an address number assigned to each of the lifting / lowering device main bodies 21a to 21n, a drive mode switching instruction for the lifting / lowering device main bodies 21a to 21n, and an electric motor 22a for vertically driving the suspended lighting fixtures 31a to 31n. .About.22n, and transmits an infrared control signal composed of forward / reverse drive and drive stop drive control.
[0153]
On the other hand, among the infrared signals transmitted from the remote control transmitter 42, the infrared receiver 17d provided in the lifting device main bodies 21a to 21n receives an infrared control signal corresponding to its own address number, and receives the infrared control signal. This is executed by decoding a drive mode switching instruction included in the control signal and a drive control signal such as forward / reverse drive and drive stop of the electric motor.
[0154]
Specifically, for example, when the address number of the lifting / lowering device main body 21a and the infrared control signal for setting the drive mode of the lifting / lowering device main body 21a to the setting mode are transmitted from the remote control transmitter 42, the infrared control signal The lifting / lowering device body 21a that has received the command recognizes that it is an infrared control signal for its own address number, switches the drive mode to the setting mode, and waits for reception of an infrared control signal from the subsequent remote control transmitter 42. . In this setting mode state, when the ascending, descending, or stopping drive control signal of the lighting device 31a suspended and the address number is transmitted and received from the remote control transmitter 42, the elevating device main body 21a, based on the control signal, The suspended lighting fixture 31a is driven up and down, and processing such as setting of an optimum maintenance position is executed.
[0155]
In this way, the lifting / lowering device main body 21 is individually controlled by the address number of the lifting / lowering device main body 21 that is driven and controlled by the remote control transmitter 42 and the infrared control signal indicating the drive mode and the drive control content of the lifting / lowering device main body 21 of the address number. The drive control can be performed, and the adjustment setting of the optimum lowering value, which is the optimum maintenance position in the setting mode, can be individually executed, so that the error between the lifting devices can be corrected and corrected.
[0156]
In addition, instead of the remote control transmitter 42, an external setting device 41 is connected to the setting device connecting portion 43 of the lifting device main body 21, and the driving mode is connected to the lifting device main body 21 to which the external setting device 41 is connected. , And control signals such as raising and lowering drive control of the suspended lighting equipment 31 are transmitted by wire. Based on the control signals transmitted by wire, the optimal maintenance position of the individual lifting apparatus main body 21 is determined. Set the descending position.
[0157]
As a result, it is possible to individually correct and correct errors between the lifting / lowering device main bodies 21.
[0158]
【The invention's effect】
According to the first aspect of the present invention, in the operation mode of maintenance and inspection, in the optimal lowering position setting for raising and lowering the elevating body to the optimal lowering position, the elevating body is once raised and lowered to the optimal lowering position, and from the optimal lowering position. By setting the reference drive amount up to the optimal lowering position based on the drive amount up to the highest position, it is possible to set the drive amount up to the optimal lowering position according to each lifting device without using complicated calculation functions It has the following effects.
[0159]
The lifting device according to the second aspect of the present invention has the effect that, in setting the optimum lowering position, the lowering drive is performed to near the optimum lowering position, and then the fine lowering position is easily set by adjusting the raising and lowering. .
[0160]
According to the third aspect of the present invention, when there is a height difference between the mounting surface of the lifting device or the lowest position of the lifting body, the optimum lowering position of each lifting device according to the height difference can be easily determined. Has effects that can be set.
[0161]
The lifting device according to the fifth and sixth aspects of the present invention enables setting of the optimum lowering position and lowering drive to the optimum lowering position without being affected by the weight and the lifting distance of the electric device to be raised and lowered. .
[0162]
In the lifting device according to the seventh and eighth aspects of the present invention, it is possible to adjust and set the optimal lowering position of the lifting device individually, to eliminate errors between the lifting devices, or to set conditions for each lifting device.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a lifting control unit used in a lifting device according to the present invention.
FIG. 2 is a block diagram showing a schematic configuration of a lifting device according to the present invention.
FIG. 3 is an explanatory diagram illustrating an installed state of a lifting device according to the present invention.
FIG. 4 is a flowchart illustrating an operation of a setting mode that is a first drive control mode of the lifting device according to the present invention.
FIG. 5 is a flowchart illustrating an operation in an operation mode that is a second drive control mode of the lifting device according to the present invention.
FIG. 6 is a flowchart illustrating the operation of another embodiment of the first drive control mode of the lifting device according to the present invention.
FIG. 7 is a flowchart illustrating an operation of an application example of another embodiment of the first drive control mode of the lifting device according to the present invention.
FIG. 8 is an explanatory view illustrating another embodiment of the lifting device according to the present invention.
FIG. 9 is an explanatory diagram illustrating an application form of the lifting device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Microprocessor (MPU), 12 ... Memory, 13 ... Motor drive circuit, 14 ... Timer, 15 ... Operation switch, 16 ... Mode changeover switch, 21 ... Elevating device main body, 22 ... Electric motor, 23 ... Winding drum, Reference numeral 24: wire rope, 25: wire guard, 26: elevating control unit, 27: lighting control unit, 28: power supply terminal, 29: power receiving terminal, 30: elevating body, 31: lighting equipment.

Claims (8)

A plurality of lifting and lowering means for individually driving the plurality of suspended electric devices up and down;
A plurality of lifting control means for individually controlling the driving of the plurality of lifting means;
An operation instructing means for instructing the plurality of elevating control means to perform an ascending and descending drive operation instruction; in response to an operation instruction from the operation instructing means, the ascending and descending means is driven to ascend and descend to drive the electric device down to an optimal descending position. A first lifting / lowering control mode means provided in the lifting / lowering control means for detecting and storing a driving amount of the lifting / lowering means when the electrical device is driven to rise from the optimum lowering position to the highest lifting position;
In accordance with an operation instruction from the operation instructing means, the electric device is moved down from the highest position to the optimal lowering position based on the drive amount of the elevating means detected and stored in the first elevating control mode means. Second lifting / lowering control mode means provided in the lifting / lowering control means for driving control;
An elevating device comprising: A first elevating control mode means provided in the elevating control means drives and controls the elevating means in response to an operation instruction from the operation instructing means to lower the electric device from a highest position to a position near an optimum descent position. It has a lowering position setting function to be driven, and an adjusting function to adjust an electric device, which has been driven down to near the optimum lowering position set by the lowering position setting function, to an optimum lowering position. 2. The lifting device according to claim 1, wherein a driving amount of the lifting device when the lifting device is driven to move from the lower position to the highest position is detected and stored. A first elevating control mode means provided in the elevating control means drives and controls the elevating means in accordance with an operation instruction from the operation instructing means to lower the electric device from a highest position to a lowest position. A lowering position maintaining function for maintaining the state of being lowered to the lowermost position for a predetermined time, and after a lapse of a predetermined time maintained at the lowermost position by the lowermost position maintaining function, the raising and lowering means is driven to ascend, An adjustment function for setting and adjusting the electric device to the optimal lowering position, and detecting and storing the drive amount of the lifting / lowering means when the electric device is driven to ascend from the optimal lowering position adjusted by the adjusting function to the highest ascending position. The elevating device according to claim 1, wherein the elevating device is provided. A first elevating control mode means provided in the elevating control means drives and controls the elevating means in accordance with an operation instruction from the operation instructing means to lower the electric device from a highest position to a lowest position. A lowermost position maintaining function of maintaining the state of being lowered to the lowest position for a predetermined time, and after a lapse of a predetermined time maintained at the lowest position by the lowest position maintaining function, drive control of the elevating means, A drive amount detection function for detecting the drive amount of the lifting / lowering means from the lowest position to the highest position when the electric device is raised from the lowest position to the highest position, and the drive amount detection function detects the drive amount. A calculating function for calculating from the driving amount to the optimum lowering position from the highest position of the electric device, and storing the driving amount from the highest moving position to the optimum lowering position calculated by the calculating function. Lifting device according to claim 1, wherein the symptoms. A plurality of lifting and lowering means for individually driving the plurality of suspended electric devices up and down;
A plurality of lifting control means for individually controlling the driving of the plurality of lifting means;
An operation instructing means for instructing the plurality of elevating control means to perform an elevating drive operation instruction; and an operating instruction from the operation instructing means for driving the elevating means up and down to move the electric device from a highest position to a lowest position. The descent time is measured by lowering the electric device, and the measured descent time and the descent distance from the highest position to the lowest position of the electric device are used to calculate the optimum descent position from the highest position of the electric device. First elevation control mode means provided in the elevation control means for calculating and setting the drive amount up to;
In accordance with an operation instruction from the operation instructing means, the electric device is lowered to an optimum lowering position based on a drive amount from the highest position to an optimum lowering position set by the first lifting control mode means. Second lifting / lowering control mode means provided in the lifting / lowering control means for driving control;
An elevating device comprising: A first elevating control mode means provided in the elevating control means, when calculating a drive amount of the electric device to an optimum lowering position, a unit distance corresponding to a lowering distance from a highest position to a lowest position. The method according to claim 1, further comprising: calculating a descending speed for each unit distance; and using the calculated descending speed for each unit distance, correcting and setting a drive amount according to a descending distance from a highest rising position to an optimum descending position. 6. The elevating device according to 5. An external setting device for instructing operation of the first elevation control mode means in addition to an operation instruction from the operation instruction means can be connected to the plurality of elevation control means, and the first elevation control can be performed by the external setting device. The lifting device according to any one of claims 1 to 6, wherein the mode device is drive-controlled to detect and store a driving amount of the lifting device up to an optimal lowering position. The plurality of elevation control means are provided with remote control signal reception means for receiving a remote control signal for operating the first elevation control means in addition to the operation instruction from the operation instruction means. The first means for controlling the first elevation control mode by means of a remote control signal from a remote control signal transmitting means, and detecting and storing a drive amount of the elevation means to an optimum lowering position. Item 7. The lifting device according to any one of Items 1 to 6.

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