JPH03216477A - Control device for linear motor type elevator - Google Patents

Control device for linear motor type elevator

Info

Publication number
JPH03216477A
JPH03216477A JP2011845A JP1184590A JPH03216477A JP H03216477 A JPH03216477 A JP H03216477A JP 2011845 A JP2011845 A JP 2011845A JP 1184590 A JP1184590 A JP 1184590A JP H03216477 A JPH03216477 A JP H03216477A
Authority
JP
Japan
Prior art keywords
car
load
cage
linear motor
thrust command
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2011845A
Other languages
Japanese (ja)
Other versions
JP2512336B2 (en
Inventor
Toshiaki Ishii
敏昭 石井
Hiroyuki Ikejima
宏行 池島
Takehiko Kubota
猛彦 久保田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2011845A priority Critical patent/JP2512336B2/en
Publication of JPH03216477A publication Critical patent/JPH03216477A/en
Application granted granted Critical
Publication of JP2512336B2 publication Critical patent/JP2512336B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Elevator Control (AREA)

Abstract

PURPOSE:To perform operation with comfortableness in riding by providing a load detecting device on a braking device so as to measure the weight of a cage during stopping and inputting an arithmetic value, obtained by inputting a detection value in accordance with a weight measuring value of the cage to a thrust command generating device, to a driving gear of a linear motor as a thrust command. CONSTITUTION:Since an electromagnet device 10d is deenergized when a cage 2 is placed in a stop condition, suction force to a rod 10r is deenergized, and a guide rail 6 is pressed by a brake shoe 10a by extending force of a compression spring 10b. On the other hand, a load of the cage 2 is a load variable related to a load cell 50 between a bottom part of the cage 2, displaced along a plurality of bolts 10f in a floating condition, and an upper surface of a body 10e. In such a way as mentioned, the load cell 50, which receives the load, inputs an output signal, in accordance with the load of the cage 2, to a thrust command generating device 51 in which a thrust command 51a, in accordance with the load of the cage 2, to be given to a linear motor, is calculated and input to a VVVF device, and a control device 10 is opened after a control command, based on the command 51a, is previously given at the time of starting.

Description

【発明の詳細な説明】 [産業上の利用分野] 、この発明は、リニアモータによる駆動でかごを昇降さ
せるエレベータの制御装置に係り、さらに詳しくは、該
エレベータのかごの制動装置の制御装置に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for an elevator that raises and lowers a car driven by a linear motor, and more particularly, to a control device for a braking device for the elevator car. It is something.

[従来の技術] 従来のローブ式エレベータは、ロープの一端にかごを設
けると共に、他端には釣り合い錘りを設けて、巻上機の
綱車とこれに掛けわたしたローブとの摩擦力でかごを昇
降させるトラクション式が用いられている。
[Prior Art] A conventional lobe-type elevator has a car at one end of the rope and a counterweight at the other end, and uses the frictional force between the sheave of the hoist and the lobe stretched around it. A traction system is used to raise and lower the car.

一方、超高層ビルのエレベータにおいては、エレベータ
の運転能力及びサービス向上の観点から、きわめて多数
のエレベータを設置する必要があるので、上記のトラク
ション式のエレベータではビルの有効使用スペースが減
ってしまう。
On the other hand, in the case of elevators in skyscrapers, it is necessary to install a very large number of elevators from the viewpoint of improving the operating capacity and service of the elevators, so the above-mentioned traction type elevators reduce the effective usable space of the building.

そこで、多数のエレベータを設置しても、単一の昇降路
内に複数組のエレベータかごを配置し、リニアモータに
よって駆動される所謂ワンシャフトマルチカ一式のエレ
ベータが提案されている。
Therefore, even if a large number of elevators are installed, a so-called one-shaft multicar elevator has been proposed in which a plurality of sets of elevator cars are arranged in a single hoistway and driven by a linear motor.

第3図は従来のリニアモータ式エレベータの構成例を示
す斜視図である。図において、(1)はかごの昇降路、
(2)は上部かご(以下かごという)、(2d)はかご
(2)の直下で昇降する下部かごて、かご(2)と同一
構造のものである。(3)は階床、(2l)はかご(2
)の側壁に設けられ、ガイドレール(5)に沿ってかご
(2)を案内する上部ガイドローラ、(22)は同じく
は下部ガイドローラである。なお、かご(2)のガイド
レール(6)側にも上記と同様なガイドローラが設けら
れている。(10)はその詳細を後述する制動装置、(
30)は昇降路(1)に配設されたリニアモータの一次
コイルであり、(30A)〜(30D)で示すように四
分割されている。
FIG. 3 is a perspective view showing an example of the configuration of a conventional linear motor elevator. In the figure, (1) is the car hoistway;
(2) is an upper car (hereinafter referred to as a car), (2d) is a lower car that goes up and down directly below car (2), and has the same structure as car (2). (3) is the floor, (2l) is the basket (2
) is provided on the side wall of the car and guides the car (2) along the guide rail (5). The upper guide roller (22) is also a lower guide roller. Note that a guide roller similar to the above is also provided on the guide rail (6) side of the car (2). (10) is a braking device whose details will be described later;
30) is a primary coil of a linear motor disposed in the hoistway (1), which is divided into four parts as shown by (30A) to (30D).

(40)はかご(2)の側壁にリニアモータの一次コイ
ル(30)に対向して配設されたリニアモータの二次側
を構成する永久磁石であり、同様に(40A)〜(40
D)で示すように四分割されている。
(40) is a permanent magnet that constitutes the secondary side of the linear motor, which is disposed on the side wall of the cage (2) facing the primary coil (30) of the linear motor;
It is divided into four parts as shown in D).

第4図は第3図の構成を模式的に示した縦断面図で、さ
らにリニアモータの一次コイル(30)と駆動用のイン
バータ装置(100)との接続を示したものである。イ
ンバータ装置(100)において、、(lot)はパワ
ートランジスタ等で構成された可変電圧可変周波数制御
装置(以下、VVVF装置という) 、(102) ハ
一次コイル(30)とvvVF装it(101)とを接
続するためのコンタクタ接点、(103)は一次コイル
(30)を短絡するための接点であり、一次コイル(3
0)は各階床(3)の中間でセクション(3l)〜(3
8)に分割され、それぞれインバータ装置(10(1)
から独立して給電されるようになっている。このように
構成することで、複数台のかごを独立して制御できる。
FIG. 4 is a vertical sectional view schematically showing the configuration of FIG. 3, and further shows the connection between the primary coil (30) of the linear motor and the driving inverter device (100). In the inverter device (100), (lot) is a variable voltage variable frequency control device (hereinafter referred to as VVVF device) composed of power transistors, etc., (102) C is a primary coil (30) and a vvVF device (101). The contactor contact (103) is a contact for short-circuiting the primary coil (30).
0) is located between sections (3l) to (3) in the middle of each floor (3).
8), each with an inverter device (10(1)
It is designed to be powered independently from the With this configuration, multiple cars can be controlled independently.

すなわち、かご(2)の位置を検出し、対応するセクシ
ョン(31)〜(38)を選択してインバータ装置(1
00)で付勢するものである。なお、VVVF装置(1
01)については、例えば特開昭61−170287号
公報等で既に開示されているので、ここでは詳細を省略
する。
That is, the position of the car (2) is detected, the corresponding sections (31) to (38) are selected, and the inverter device (1) is
00). In addition, VVVF device (1
01) has already been disclosed in, for example, Japanese Unexamined Patent Application Publication No. 170287/1983, so the details will be omitted here.

第5図は第3図及び第4図における制動装置(10)の
構成を示す正面図である。図において、(10a)はガ
イドレール(8)の側面にそれぞれ対向して設けられた
制動シュー (tab)はレバー(10c)を介して制
動シュー(10a)をガイドレール(6)に押圧する圧
縮ばね、(led)はかご(2)の下部に固定された電
磁石装置で、励磁されると圧縮ばね(10b)に抗して
ロッド(10r)を吸引し、制動シュー(10a)を解
放位置に保持する。
FIG. 5 is a front view showing the structure of the braking device (10) in FIGS. 3 and 4. FIG. In the figure, (10a) is a compression shoe (tab) provided on each side of the guide rail (8) that presses the brake shoe (10a) against the guide rail (6) via a lever (10c). The spring (led) is an electromagnetic device fixed to the bottom of the car (2), and when energized, it attracts the rod (10r) against the compression spring (10b) and moves the brake shoe (10a) to the release position. Hold.

次に、上記のように構成した制動装置の作用を説明する
。起動指令が出されると、接点(103)は開放され、
接点(102)は閉成する。また、電磁石装置(10d
)が付勢されて制動装置(10)が解放状態になる。V
VVF装置(101)は所定の速度指令信号に従って所
定の電圧、周波数の交流を発生して一次コイル(30)
に給電し、この給電による移動磁界によってかご(2)
が昇降駆動される。目的階に到達すると、制動装置(1
0)がかご(2)を制止するとともに、接点(103)
は閉成し、接点(102)は開放する。
Next, the operation of the braking device configured as described above will be explained. When a start command is issued, the contact (103) is opened,
Contact (102) is closed. In addition, an electromagnet device (10d
) is energized and the braking device (10) is in the released state. V
The VVF device (101) generates an alternating current of a predetermined voltage and frequency according to a predetermined speed command signal to drive the primary coil (30).
The moving magnetic field generated by this power supply causes the car (2) to
is driven up and down. When reaching the destination floor, the braking device (1
0) stops the car (2), and the contact (103)
is closed and the contact (102) is opened.

通常、以上の制動装置(10)の制動動作は、かご(2
)が目的階に停止するたびごとに電磁石(1(ld)が
消勢され、かご(2)をガイドレール(6)に保持・す
る。
Normally, the braking operation of the above braking device (10) is performed by the car (2
) stops at the destination floor, the electromagnet (1 (ld)) is deenergized to hold the car (2) on the guide rail (6).

[発明が解決しようとする課題] 上記のようなリニアモータ式エレベータは、ローブ付き
エレベータと比較すると、ローブ付きエレベータの場合
は、例えば巻き上げローブにかかる荷重を検出し、巻き
上げモータには釣り合い錘りに対するアンバランストル
クをあらかじめ与えておき、その後に制動装置を解放す
る、いわゆる「秤起動」が可能であるが、かごを吊荷す
るロープがないリニアモータ式エレベータにおいては「
秤起動」を行うことができないために、走行開始と同時
に制動装置を解放すると、かごは一旦自重で僅かに下方
へ移動してから走行するため、乗客に不快感を与える。
[Problems to be Solved by the Invention] Compared to elevators with lobes, the linear motor elevator as described above detects the load applied to the hoisting lobes, and the hoisting motor is equipped with a counterweight. It is possible to apply an unbalanced torque to the car in advance and then release the braking device, a so-called "scale start," but in linear motor elevators that do not have ropes to suspend the car, "
If the brake system is released at the same time as the car starts running, the car will move slightly downward under its own weight before running, causing discomfort to passengers.

また、この欠点を避けるために、かごの負荷をかごが支
えられている防振ゴムのたわみ量から計量する方法も考
えられるが、この方法は正確さを欠くなどの問題があっ
た。
In order to avoid this drawback, a method may be considered in which the load on the car is measured from the amount of deflection of the anti-vibration rubber on which the car is supported, but this method has problems such as a lack of accuracy.

この発明は上記のような課題を解決するためになされた
もので、走行開始と同時に制動装置を解放しても、かご
が一旦下方へ移動することがな《、乗客が乗り心地よく
運行できるリニアモータ式エレベータの制御装置を得る
ことを目的とする。
This invention was made in order to solve the above-mentioned problem, and it is a linear motor that allows passengers to ride comfortably without the car moving downward even if the braking device is released at the same time as the car starts traveling. The purpose is to obtain a control device for a type elevator.

[課題を解決するための手段] この発明に係るリニアモータ式エレベータの制御装置は
、昇降路に対向設置されてかごを案内するガイドレール
の両側面を押圧してかごを停止、保持する制動装置上に
荷重検出装置を設け、この荷重検出装置によって停止中
のかごの重量を計り、かごの計量値に応じた検出値を推
力指令発生装置に入力して演算することによって得られ
た演算値を、推力指令としてリニアモータの駆動装置に
入力するようにしたものである。
[Means for Solving the Problems] A control device for a linear motor elevator according to the present invention includes a braking device that stops and holds a car by pressing both sides of guide rails that are installed facing each other in a hoistway and guide the car. A load detection device is installed on the top, the weight of the stopped car is measured by this load detection device, and the calculated value obtained by inputting the detected value corresponding to the weighed value of the car to the thrust command generator is calculated. , which is input to the linear motor drive device as a thrust command.

[作用コ この発明においては、かごの始動時に荷重検出装置で得
られたかごの自重に応じた推力を、あらかじめリニアモ
ータ,の推力として与えた後に制動装置を解放し、かご
を始動させる。
[Operation] In this invention, a thrust corresponding to the weight of the car obtained by the load detection device at the time of starting the car is applied in advance as thrust to the linear motor, and then the braking device is released and the car is started.

[実施例] 第1図、第2図はこの発明の一実施例の構成を示す平面
図及びその正面図である。
[Embodiment] FIGS. 1 and 2 are a plan view and a front view showing the configuration of an embodiment of the present invention.

第1図、第2図において、従来技術における制動装置の
構成を示した第5図中の符号と同じ部分は、同一又は相
当部分であり、これらの構成及びガイドレール(6)に
対向配置されたガイドレール(5)側についての説明は
省略する。
In FIGS. 1 and 2, parts that are the same as the reference numerals in FIG. 5, which shows the structure of the braking device in the prior art, are the same or equivalent parts, and are arranged opposite to these structures and the guide rail (6). A description of the guide rail (5) side will be omitted.

(10e)は制動装置(10)を保持する筐体であり、
かご(2)に穿設した貫通孔に遊嵌した複数のボルト(
10f)が螺合され、かご(2)に吊持されている。
(10e) is a casing that holds the braking device (10);
Multiple bolts loosely fitted into the through holes drilled in the basket (2)
10f) are screwed together and suspended from the cage (2).

(50)は筐体(10e)の上面(10g)に固設され
たロードセルであり、その出力信号は導線(50a) 
. (50b)を介して推力指令発生装置(51)に伝
送され、その出力である推力指令は第4図で示したVV
VF装置(101)に入力するようになっている。
(50) is a load cell fixed on the top surface (10g) of the housing (10e), and its output signal is sent to the conductor (50a).
.. (50b) to the thrust command generator (51), and the output thrust command is the VV shown in FIG.
It is designed to be input to the VF device (101).

次に、上記実施例の作用を説明する。かご(2)が停止
状態のときは、第1図に示すように電磁石装置(10d
)は消磁されているので、ロツド(10r)に対する吸
引力が消勢され、圧縮ばね(10b)の伸張力によって
制動シュー(10a)はガイドレール(6)を押圧して
いる。一方、かご(2)の荷重は遊嵌状態の複数のボル
ト(10f)に沿って変位するかご(2)の底部と、筐
体(10e)の上面との間のロードセル(50)に対す
る負荷変数となる(構成説明を省略したガイドレール(
6)に対向配設されたガイドレール(5)側のロードセ
ルにも同一の負荷がかかる)。
Next, the operation of the above embodiment will be explained. When the car (2) is in a stopped state, the electromagnet device (10d
) is demagnetized, so the attraction force on the rod (10r) is deenergized, and the braking shoe (10a) presses the guide rail (6) by the tension force of the compression spring (10b). On the other hand, the load of the car (2) is a load variable applied to the load cell (50) between the bottom of the car (2) and the top surface of the housing (10e), which is displaced along the plurality of loosely fitted bolts (10f). (Guide rail with configuration explanation omitted)
The same load is applied to the load cell on the guide rail (5) side, which is arranged opposite to the guide rail (5).

以上のように、負荷を受けたロードセル(50)は、か
ご(2)の荷重に応じた出力信号を導線(50a)(5
0b)を介して推力指令発生装置(51》に入力し、こ
こでリニアモータに与えるべきかご(2)の荷重に応じ
た推力指令(51a)を演算し、第4図に示したVVV
F装置(101)に入力して、推力指令(51a)に基
づいたりニアモータに対する制御指令をかご(2)の始
動時にあらかじめ゛与えてから制動装置(10)を解放
するようにして、この解放時に生じるかご(2)の下方
への移動を防止する。
As described above, the loaded load cell (50) transmits an output signal corresponding to the load of the car (2) to the conductor (50a) (50).
0b) to the thrust command generator (51), where the thrust command (51a) corresponding to the load of the car (2) to be applied to the linear motor is calculated, and the VVV shown in FIG.
The braking device (10) is released after the thrust command (51a) or a control command for the near motor is given in advance to the F device (101) at the time of starting the car (2). This prevents the cage (2) from moving downwards.

[発明の効果] 以上のように、この発明によれば、制動装置が作動して
ガイドレールを扶持したかごの停止時に、かごの自重を
受けてこの自重に応じた信号を出力するロードセルと、
このロードセルの出力を受けて、かごの始動時にかごが
下方へ移動するのを防止する推力指令を演算する推力指
令発生装置とを設けたので、かごの走行開始と同時に制
動装置を解放しても、この解放時にかごが一旦下方へ移
動するようなことがなく、乗客にとって乗り心地のよい
リニアモータ式エレベータが得られる。
[Effects of the Invention] As described above, according to the present invention, there is provided a load cell that receives the dead weight of the car and outputs a signal corresponding to the dead weight when the braking device is activated and the car supporting the guide rail is stopped;
We installed a thrust command generator that receives the output of this load cell and calculates a thrust command to prevent the car from moving downward when the car starts, so even if the braking device is released at the same time as the car starts running. When the car is released, the car does not move downward, and a linear motor elevator that provides a comfortable ride for passengers can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例の構成を示す平面図、第2
図はその正面図、第3図は従来のりニアモータ式エレベ
ータの構成例を示す斜視図、第4図は第3図の構成を模
式的に示した縦断面図、第5図は従来の制動装置の構成
を示す正面図である。 図において、(1)は昇降路、(2)はかご、(5).
(6)はガイドレール、(lO)は制動装置、(50)
はロードセル(荷重検出装置) 、(51)は推力指令
発生装置、(51a)は推力指令、(100)はインバ
ータ装置である。 なお、各図中同一符号は同一又は相当部分を示すものと
する。
FIG. 1 is a plan view showing the configuration of an embodiment of the present invention, and FIG.
The figure is a front view, Figure 3 is a perspective view showing an example of the configuration of a conventional linear motor elevator, Figure 4 is a vertical sectional view schematically showing the configuration of Figure 3, and Figure 5 is a conventional braking device. FIG. In the figure, (1) is the hoistway, (2) is the car, (5) .
(6) is a guide rail, (lO) is a braking device, (50)
is a load cell (load detection device), (51) is a thrust command generator, (51a) is a thrust command, and (100) is an inverter device. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】 昇降路に対向設置されてかごを案内するガイドレールと
、上記かごを昇降させるリニアモータを駆動する駆動装
置と、上記ガイドレールの両側面を押圧して上記かごを
停止、保持する制動装置とを備えたエレベータにおいて
、 上記制動装置上に設置されて停止時のかごの重量を計量
する荷重検出装置と、この荷重検出装置の出力を受けて
上記かごの重量に対応するかご始動時の推力を演算しこ
の演算結果を推力指令として上記駆動装置に入力する推
力指令発生装置とを備えたことを特徴とするリニアモー
タ式エレベータの制御装置。
[Scope of Claims] Guide rails installed opposite to each other in a hoistway to guide a car, a drive device that drives a linear motor that raises and lowers the car, and pressing both sides of the guide rail to stop the car; A load detecting device installed on the braking device to measure the weight of the car when stopped, and a car receiving the output of the load detecting device to measure the weight of the car when it is stopped. 1. A control device for a linear motor elevator, comprising: a thrust command generating device which calculates a thrust force at the time of starting and inputs the calculation result to the drive device as a thrust command.
JP2011845A 1990-01-23 1990-01-23 Controller for linear motor type elevator Expired - Lifetime JP2512336B2 (en)

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JP2011845A JP2512336B2 (en) 1990-01-23 1990-01-23 Controller for linear motor type elevator

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Application Number Priority Date Filing Date Title
JP2011845A JP2512336B2 (en) 1990-01-23 1990-01-23 Controller for linear motor type elevator

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JPH03216477A true JPH03216477A (en) 1991-09-24
JP2512336B2 JP2512336B2 (en) 1996-07-03

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001019292A (en) * 1999-06-25 2001-01-23 Inventio Ag Device and method to prevent vertical directional displacement and vertical directional vibration of load support means of vertical carrier device
WO2016005429A1 (en) * 2014-07-10 2016-01-14 Thyssenkrupp Elevator Ag Elevator system comprising a braking mechanism on the elevator car, and method for operating same
WO2016019783A1 (en) * 2014-08-07 2016-02-11 江苏蒙哥马利电梯有限公司 Device preventing abnormal movement of lift cage
CN105621192A (en) * 2016-03-11 2016-06-01 河南理工大学 Efficient permanent magnet power-enhanced safety brake and direct-driven elevator
CN107215741A (en) * 2017-06-12 2017-09-29 河南理工大学 A kind of linear motor direct-driven elevator overspeed protecting and service brake
WO2021084012A1 (en) * 2019-10-31 2021-05-06 Inventio Ag Brake device for an elevator cab, comprising an integrated load measuring device, use thereof in an elevator system, and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826776A (en) * 1981-08-07 1983-02-17 株式会社日立製作所 Compensator for starting of elevator
JPS60122676A (en) * 1983-12-07 1985-07-01 株式会社日立製作所 Controller for elevator
JPH01203182A (en) * 1988-02-10 1989-08-15 Toshiba Corp Elevator drive unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826776A (en) * 1981-08-07 1983-02-17 株式会社日立製作所 Compensator for starting of elevator
JPS60122676A (en) * 1983-12-07 1985-07-01 株式会社日立製作所 Controller for elevator
JPH01203182A (en) * 1988-02-10 1989-08-15 Toshiba Corp Elevator drive unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001019292A (en) * 1999-06-25 2001-01-23 Inventio Ag Device and method to prevent vertical directional displacement and vertical directional vibration of load support means of vertical carrier device
WO2016005429A1 (en) * 2014-07-10 2016-01-14 Thyssenkrupp Elevator Ag Elevator system comprising a braking mechanism on the elevator car, and method for operating same
WO2016019783A1 (en) * 2014-08-07 2016-02-11 江苏蒙哥马利电梯有限公司 Device preventing abnormal movement of lift cage
CN105621192A (en) * 2016-03-11 2016-06-01 河南理工大学 Efficient permanent magnet power-enhanced safety brake and direct-driven elevator
CN107215741A (en) * 2017-06-12 2017-09-29 河南理工大学 A kind of linear motor direct-driven elevator overspeed protecting and service brake
WO2021084012A1 (en) * 2019-10-31 2021-05-06 Inventio Ag Brake device for an elevator cab, comprising an integrated load measuring device, use thereof in an elevator system, and method
CN114616202A (en) * 2019-10-31 2022-06-10 因温特奥股份公司 Braking device for an elevator car with an integrated load measuring device, and use of such a braking device in an elevator installation and method
CN114616202B (en) * 2019-10-31 2023-09-29 因温特奥股份公司 Brake device, use thereof in an elevator installation, method and elevator installation
US11772933B2 (en) 2019-10-31 2023-10-03 Inventio Ag Brake device for an elevator car, comprising an integrated load measuring device, use thereof in an elevator system, and method
AU2020376295B2 (en) * 2019-10-31 2024-03-07 Inventio Ag Brake device for an elevator cab, comprising an integrated load measuring device, use thereof in an elevator system, and method

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