JPH0742057B2 - Hydraulic elevator controller - Google Patents
Hydraulic elevator controllerInfo
- Publication number
- JPH0742057B2 JPH0742057B2 JP1154207A JP15420789A JPH0742057B2 JP H0742057 B2 JPH0742057 B2 JP H0742057B2 JP 1154207 A JP1154207 A JP 1154207A JP 15420789 A JP15420789 A JP 15420789A JP H0742057 B2 JPH0742057 B2 JP H0742057B2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- solenoid valve
- hydraulic pump
- hydraulic pressure
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Types And Forms Of Lifts (AREA)
- Elevator Control (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は油圧エレベーターを制御する装置に関するも
のである。The present invention relates to a device for controlling a hydraulic elevator.
従来，油圧エレベーターでは，例えば特開昭63−252885
号に示されるように，油圧ポンプと油圧ジヤツキの間に
逆止弁を持つ電磁切換え弁が用いられているが，この逆
止弁の部分での流路損失があり，かつ電磁切換え弁の構
造が複雑となり高価なものとなる。このため，逆止弁を
廃止し，単にソレノイドで油圧回路の開閉だけを行う電
磁弁を採用し，流路損失が少なく，かつ安価に構成され
る油圧エレベーターの制御装置が提案されている。Conventionally, in hydraulic elevators, for example, Japanese Patent Laid-Open No. 63-252885
As shown in No. 6, an electromagnetic switching valve with a check valve is used between the hydraulic pump and the hydraulic jack. However, there is a flow path loss at this check valve, and the structure of the electromagnetic switching valve is Becomes complicated and expensive. For this reason, there has been proposed a hydraulic elevator control device in which the check valve is abolished and a solenoid valve that simply opens and closes the hydraulic circuit with a solenoid is used to reduce the flow path loss and to be inexpensive.
第５図はその油圧エレベーターの制御装置を示す構成図
である。FIG. 5 is a block diagram showing the control device for the hydraulic elevator.
図中，（１）は昇降路底部に立設されプランジヤ（２）
を有する油圧ジヤツキ，（３）はプランジヤ（２）の頂
部に装着された綱車，（４）は綱車（３）に巻き掛けら
れた主索で，その一端はかご（５）に他端は固定部
（６）にそれぞれ結合されている。（７）は可逆回転可
能な油圧ポンプ（８）に結合された誘導電動機，（９）
は油圧ジヤツキ（１）と油圧ポンプ（８）の間に配置さ
れた電磁弁で，ソレノイド（10）が消勢されていると油
の通路を閉塞し，付勢されると開放するように構成され
ている。（11）は油タンクで，油圧ジヤツキ（１），電
磁弁（９），油圧ポンプ（８）及び油タンク（11）はそ
れぞれ管路（12）〜（14）で接続されている。（15）は
電動機（７）に結合され回転速度を検出する速度検出
器，（16）はマイクロコンピユータ（以下マイコンとい
う）で構成され速度検出器（15）からの信号を入力して
制御信号を出力する速度制御装置，（17）は速度制御装
置（16）からの指令を受けてソレノイド（10）を制御す
る電磁弁制御装置，（18）は速度制御装置（16）からの
指令に従つて電動機（７）を駆動するインバータ装置で
ある。In the figure, (1) is the plunger (2) that is erected on the bottom of the hoistway.
A hydraulic jack having (3), (3) a sheave mounted on the top of the plunger (2), (4) a main rope wound around the sheave (3), one end of which is a car (5) and the other end. Are respectively connected to the fixed parts (6). (7) is an induction motor coupled to a reversibly rotatable hydraulic pump (8), (9)
Is a solenoid valve arranged between the hydraulic jack (1) and the hydraulic pump (8), which is configured to close the oil passage when the solenoid (10) is deenergized and open when energized. Has been done. Reference numeral (11) is an oil tank, and the hydraulic jack (1), the solenoid valve (9), the hydraulic pump (8) and the oil tank (11) are connected by pipelines (12) to (14), respectively. (15) is a speed detector that is connected to the electric motor (7) to detect the rotation speed, and (16) is composed of a micro computer (hereinafter referred to as a microcomputer) and receives a signal from the speed detector (15) to input a control signal. The output speed control device, (17) is a solenoid valve control device that controls the solenoid (10) in response to a command from the speed control device (16), and (18) is in accordance with the command from the speed control device (16). It is an inverter device that drives an electric motor (7).
従来の油圧エレベーターの制御装置は上記のように構成
され，かご（５）の停止時，電磁弁（９）のソレノイド
（10）は消勢されており，管路（12），（13）は閉塞さ
れている。The conventional hydraulic elevator control device is configured as described above, the solenoid (10) of the solenoid valve (9) is deenergized when the car (5) is stopped, and the pipelines (12) and (13) are It is blocked.
上昇指令が出ると，電磁弁制御装置（17）によりソレノ
イド（10）が付勢され，電磁弁（９）は全開し，管路
（12），（13）は連通する。同時に，電動機（７）は回
転し，速度制御装置（16）及びインバータ装置（18）に
より電動機（７）の回転速度は制御され，油圧ポンプ
（８）の回転速度，すなわち油圧ポンプ（８）の吐出量
が制御される。これで，油圧ポンプ（８）は油タンク
（11）の油を管路（14）を介して吸引して吐出し，管路
（13），電磁弁（９）及び管路（12）を通つて油圧ジヤ
ツキ（１）へ送出する。したがつて，かご（５）はプラ
ンジヤ（２），綱車（３）及び主索（４）を介して駆動
され，所定速度パターンに従つて上昇する。この間，電
磁弁（９）は全開されているので，逆止弁を使用したも
のに比し流路損失は少ない。When a rise command is issued, the solenoid (10) is energized by the solenoid valve control device (17), the solenoid valve (9) is fully opened, and the pipelines (12) and (13) are in communication. At the same time, the electric motor (7) rotates, the rotational speed of the electric motor (7) is controlled by the speed control device (16) and the inverter device (18), and the rotational speed of the hydraulic pump (8), that is, the hydraulic pump (8). The discharge amount is controlled. Now, the hydraulic pump (8) sucks and discharges the oil in the oil tank (11) through the pipe line (14), and passes through the pipe line (13), the solenoid valve (9) and the pipe line (12). Then, it is sent to the hydraulic jack (1). Therefore, the car (5) is driven via the plunger (2), the sheave (3) and the main rope (4), and rises according to a predetermined speed pattern. During this period, the solenoid valve (9) is fully opened, so the flow path loss is smaller than that of the one using a check valve.
また，下降運転指令が出ると，上記と同様に電磁弁
（９）は全開し，管路（12），（13）は連通する。これ
により，油圧ジヤツキ（１）はかご（５）の自重によつ
て圧油を排出し，圧油は管路（12），電磁弁（９），管
路（13），油圧ポンプ（８）及び管路（14）を通つて油
タンク（11）へ戻る。これで，油圧ポンプ（８）は回転
するため，電動機（７）は発電機として作用し，その発
電制動を利用してかご（５）の下降速度を制御すると共
に，動力を回生する。このときも，速度制御装置（16）
及びインバータ装置（18）により電動機（７）の回転速
度は制御される。Further, when a descending operation command is issued, the solenoid valve (9) is fully opened and the pipe lines (12) and (13) are communicated with each other in the same manner as above. As a result, the hydraulic jack (1) discharges the pressure oil by the weight of the car (5), and the pressure oil flows through the pipe line (12), the solenoid valve (9), the pipe line (13), and the hydraulic pump (8). And the pipeline (14) to return to the oil tank (11). With this, since the hydraulic pump (8) rotates, the electric motor (7) acts as a generator, and the generated braking is used to control the descending speed of the car (5) and regenerate power. Also at this time, the speed control device (16)
Also, the rotation speed of the electric motor (7) is controlled by the inverter device (18).
〔発明が解決しようとする課題〕 上記のような従来の油圧エレベーターの制御装置では，
かご（５）の起動時電磁弁（９）を全開するようにして
いるため，電磁弁（９）が開放したとき，管路（12），
（13）の圧力差により，圧油が油圧ジヤツキ（１）へ流
入したり，油圧ジヤツキ（１）から流出したりする。こ
のため，かご（５）は起動時にいつたん上昇又は下降し
て乗心地を損なう，すなわち乗客に起動衝撃を与えると
いう問題点がある。[Problems to be Solved by the Invention] In the conventional hydraulic elevator control device as described above,
Since the solenoid valve (9) is fully opened when the car (5) is started, when the solenoid valve (9) is opened, the pipeline (12),
Due to the pressure difference of (13), the pressure oil flows into or out of the hydraulic jack (1). Therefore, there is a problem that the car (5) is raised or lowered at the time of start-up to impair the riding comfort, that is, a starting shock is given to passengers.
この発明は上記問題点を解決するためになされたもの
で，逆止弁を有しない電磁弁を使用しても，起動衝撃を
大幅に緩和できるようにした油圧エレベーターの制御装
置を提供することを目的とする。The present invention has been made to solve the above problems, and it is an object of the present invention to provide a control device for a hydraulic elevator that can significantly reduce the starting impact even if a solenoid valve having no check valve is used. To aim.
この発明に係る油圧エレベーターの制御装置は，第１図
の油圧検出器で電磁弁の油圧ジヤツキ側の油圧を検出
し，第２の油圧検出器で電磁弁の油圧ポンプ側の油圧を
検出し，かごの起動時第１の油圧検出器の出力と第２の
油圧検出器の出力とを比較して，その差が所定範囲にな
るように流量を制御した後に，油圧ジヤツキと油圧ポン
プの間に設けられた電磁弁を開放するようにしたもので
ある。The hydraulic elevator control device according to the present invention detects the hydraulic pressure on the hydraulic jack side of the solenoid valve with the hydraulic pressure detector of FIG. 1, and detects the hydraulic pressure of the solenoid valve on the hydraulic pump side with the second hydraulic pressure detector. When the car is started, the output of the first hydraulic pressure detector is compared with the output of the second hydraulic pressure detector, and after controlling the flow rate so that the difference is within a predetermined range, the output between the hydraulic jack and the hydraulic pump is The provided solenoid valve is opened.
この発明においては，起動時電磁弁の油圧ジヤツキ側の
油圧と，油圧ポンプ側の油圧の差が所定範囲になるよう
に制御した後電磁弁を開放するようにしたため，電磁弁
開放後圧油が油圧シリンダに急激に流入したり，油圧シ
リンダから急激に流出したりすることはない。In the present invention, since the solenoid valve is opened after controlling the difference between the hydraulic pressure on the hydraulic jack side of the solenoid valve at startup and the hydraulic pressure on the hydraulic pump side to be within a predetermined range, the pressure oil after opening the solenoid valve is It does not suddenly flow into or out of the hydraulic cylinder.
第１図〜第３図はこの発明の一実施例を示す図で，第１
図は構成図，第２図は油圧制御系のブロツク図，第３図
は動作説明図であり，従来装置と同様の部分は同一符号
で示す。1 to 3 are views showing an embodiment of the present invention.
The figure is a block diagram, FIG. 2 is a block diagram of the hydraulic control system, and FIG. 3 is an operation explanatory diagram. The same parts as those of the conventional apparatus are designated by the same reference numerals.
第１図中，（21）は管路（12）に設けられ油圧ジヤツキ
（１）内の油圧Pjを検出する第１の圧力検出器，（22）
は管路（13）に設けられ油圧ポンプ（８）の出力の油圧
Ppを検出する第２の圧力検出器，（23）は運転指令が出
ている間閉成する運転リレー接点，（24）はかご（５）
のドアが開いていると閉成し閉じると開放する戸開検出
リレー接点である。なお，速度制御装置（16），電磁弁
制御装置（17），インバータ装置（18）及び接点（2
3），（24）で起動時制御回路が構成されている。In FIG. 1, (21) is a first pressure detector provided in the conduit (12) for detecting the hydraulic pressure Pj in the hydraulic jack (1), and (22).
Is the hydraulic pressure of the output of the hydraulic pump (8) provided in the pipeline (13)
The second pressure detector that detects Pp, (23) is the operation relay contact that is closed while the operation command is issued, (24) is the cage (5)
Is a door open detection relay contact that closes when the door is open and opens when it closes. The speed control device (16), solenoid valve control device (17), inverter device (18) and contact (2
The startup control circuit is composed of 3) and (24).
第２図中，（31）は記憶回路，（32）は比較回路，（3
3）は速度制御装置（16），インバータ装置（18）及び
電動機（７）からなる電動機制御装置で,Kmはその全体
の利得定数,Kpは油圧ポンプ（８）の利得定数である。In FIG. 2, (31) is a memory circuit, (32) is a comparison circuit, and (3
3) is an electric motor control device comprising a speed control device (16), an inverter device (18) and an electric motor (7), where Km is the overall gain constant and Kp is the gain constant of the hydraulic pump (8).
次に，この実施例の動作を第３図を参照して説明する。Next, the operation of this embodiment will be described with reference to FIG.
今，かご（５）は停止してドアが開いているとすると，
運転リレー接点（23）は開放し，戸開検出リレー接点
（24）は閉成している。Now, if the car (5) is stopped and the door is open,
The operation relay contact (23) is open and the door open detection relay contact (24) is closed.
第３図の時刻t1で運転指令が出ると，接点（23）は閉成
する。これで，第１の圧力検出器（21）の出力は，接点
（23），（24）を介して記憶回路（31）へ入力されて記
憶される。そして，記憶回路（31）の出力は油圧制御系
の入力として比較回路（32）に与えられ，第２の圧力検
出器（22）の出力と比較される。その結果，油圧ポンプ
（８）の出力の油圧Ppと油圧ジヤツキ（１）の油圧Pjの
差が所定範囲になるように自動制御される。Operation When a command comes at time t 1 of FIG. 3, the contact (23) is closed. Thus, the output of the first pressure detector (21) is input to and stored in the memory circuit (31) via the contacts (23) and (24). Then, the output of the memory circuit (31) is given to the comparison circuit (32) as an input of the hydraulic control system and compared with the output of the second pressure detector (22). As a result, the difference between the hydraulic pressure Pp of the output of the hydraulic pump (8) and the hydraulic pressure Pj of the hydraulic jack (1) is automatically controlled so as to fall within a predetermined range.
やがて，時刻t2でドアが閉まると，接点（24）は開放
し，第１の圧力検出器（21）から記憶回路（31）への入
力を遮断する。これは，かご（５）の走行中に，走行に
よつて変動する油圧ジヤツキ（１）内の油圧を入力する
と，速度制御系の外乱となつて制御上の支障が発生する
ことがあるからである。このようにして，記憶回路（3
1）への入力は遮断されるが，その出力の油圧Pjは記憶
保持される。Eventually, when the door is closed at time t 2 , the contact (24) is opened and the input from the first pressure detector (21) to the memory circuit (31) is cut off. This is because if the hydraulic pressure in the hydraulic jack (1) that fluctuates due to running is input while the car (5) is running, disturbance in the speed control system may occur and control problems may occur. is there. In this way, the memory circuit (3
The input to 1) is cut off, but the output hydraulic pressure Pj is retained.
次に，電磁弁（９）を開くように速度制御装置（16）か
ら電磁弁制御回路（17）へ信号が与えられ，ソレノイド
（10）が付勢されて電磁弁（９）は全開する。このと
き，管路（12），（13）の圧力差はほとんどないので，
起動衝撃が発生することもなく，かご（５）は円滑に起
動する。続いて，時刻t3から速度制御系の動作により，
曲線Ａで示すようにかご（５）は走行を開始する。時刻
t4でかご（５）が停止すると接点（23）は開放し，ドア
が開くと接点（24）は閉成する。Next, a signal is given from the speed control device (16) to the solenoid valve control circuit (17) to open the solenoid valve (9), the solenoid (10) is energized, and the solenoid valve (9) is fully opened. At this time, since there is almost no pressure difference between the pipelines (12) and (13),
The car (5) can be started smoothly without any starting shock. Then, from time t 3 by the operation of the speed control system,
As shown by the curve A, the car (5) starts traveling. Times of Day
The contact (23) opens when the car (5) stops at t 4, and the contact (24) closes when the door opens.
上述の起動時の動作は，上昇時も下降時も同様である。The above-mentioned operation at the time of starting is the same when rising and falling.
なお，上記実施例では，油圧ポンプ（８）の出力の油圧
Ppを検出する第２の油圧検出器（22）を用いるものとし
たが，安価かつ簡便なものとして，第４図に示すように
構成しても十分実用に供し得る。In the above embodiment, the hydraulic pressure of the output of the hydraulic pump (8)
Although the second oil pressure detector (22) for detecting Pp is used, it can be practically used even if it is constructed as shown in FIG. 4 as an inexpensive and simple device.
第４図はこの発明の他の実施例を示す油圧制御系のブロ
ツク図で，図中（35）は利得調整回路で,Kaはその利得
定数,Kjは第１の油圧検出器（21）と記憶回路（31）を
合わせた利得定数である。FIG. 4 is a block diagram of a hydraulic control system showing another embodiment of the present invention. In the figure, (35) is a gain adjusting circuit, Ka is its gain constant, Kj is the first hydraulic pressure detector (21). It is a gain constant including the memory circuit (31).
すなわち，定数Kj,Km,Kpはあらかじめ分かつている値で
あるから，利得調整回路（35）の利得Kaを下式のように
設定すれば，油圧ポンプ（８）の出力の油圧Ppは，油圧
ジヤツキ（１）内の油圧Pjの差が所定範囲になるように
制御される。That is, since the constants Kj, Km, and Kp are values that are divided in advance, if the gain Ka of the gain adjusting circuit (35) is set as in the following equation, the hydraulic pressure Pp of the output of the hydraulic pump (8) will be The difference in the hydraulic pressure Pj in the jack (1) is controlled so as to fall within a predetermined range.
〔発明の効果〕 以上説明したとおりこの発明では，起動時電磁弁の油圧
ジヤツキ側の油圧と，油圧ポンプ側の油圧の差が所定範
囲になるように制御した後電磁弁を開放するようにした
ので，電磁弁開放後圧油が油圧シリンダに急激に流入し
たり，油圧シリンダから急激に流出したりすることがな
く，逆止弁を使用しないで電磁弁を使用しても，起動衝
撃を大幅に緩和でき，乗心地の良い油圧エレベーターと
することができる効果がある。 [Effects of the Invention] As described above, in the present invention, the solenoid valve is opened after the difference between the hydraulic pressure on the hydraulic jack side of the solenoid valve at startup and the hydraulic pressure on the hydraulic pump side is controlled within a predetermined range. Therefore, after opening the solenoid valve, pressure oil does not suddenly flow into or out of the hydraulic cylinder, and even if the solenoid valve is used without using the check valve, the starting shock will be significantly reduced. The effect is that the hydraulic elevator is comfortable and comfortable to ride.
第１図〜第３図はこの発明による油圧エレベーターの制
御装置の一実施例を示す図で，第１図は構成図，第２図
は油圧制御系のブロツク図，第３図は動作説明図，第４
図はこの発明の他の実施例を示す油圧制御系のブロツク
図，第５図は従来の油圧エレベーターの制御装置を示す
構成図である。 図中，（１）は油圧ジヤツキ，（５）はかご，（７）は
誘導電動機，（８）は油圧ポンプ，（９）は電磁弁，
（16）は速度制御装置，（17）は電磁弁制御装置，（1
8）はインバータ装置，（21）は第１の油圧検出器，（2
2）は第２の油圧検出器，（23）は運転リレー接点，（2
4）は戸開検出リレー接点である。 なお，図中同一符号は同一部分を示す。1 to 3 are views showing an embodiment of a control device for a hydraulic elevator according to the present invention. FIG. 1 is a block diagram, FIG. 2 is a block diagram of a hydraulic control system, and FIG. , 4th
FIG. 5 is a block diagram of a hydraulic control system showing another embodiment of the present invention, and FIG. 5 is a configuration diagram showing a conventional hydraulic elevator control device. In the figure, (1) is a hydraulic jack, (5) is a basket, (7) is an induction motor, (8) is a hydraulic pump, (9) is a solenoid valve,
(16) is a speed controller, (17) is a solenoid valve controller, (1
8) is an inverter device, (21) is the first hydraulic pressure detector, (2
2) is the second oil pressure detector, (23) is the operation relay contact, (2
4) is a door open detection relay contact. The same reference numerals in the drawings denote the same parts.
Claims (1)
タ装置に接続され可変速度制御される電動機と，この電
動機により駆動される油圧ポンプと，この油圧ポンプと
上記油圧ジヤツキの間に設けられた電磁弁とを有し，上
記油圧ポンプによる圧油の流量制御により上記油圧ジヤ
ツキの作動速度を制御するエレベーターにおいて，上記
電磁弁の上記油圧ジヤツキ側の油圧を検出する第１の油
圧検出器と，上記電磁弁の上記油圧ポンプ側の油圧を検
出する第２の油圧検出器とを設け，上記かごの起動時上
記第１の油圧検出器の出力と上記第２の油圧検出器の出
力とを比較して，その差が所定範囲になるように上記油
圧ポンプの圧油の流量を制御した後上記電磁弁を開放す
る起動時制御回路を備えたことを特徴とする油圧エレベ
ーターの制御装置。1. A hydraulic jack for driving a car, an electric motor connected to an inverter device for variable speed control, a hydraulic pump driven by the electric motor, and an electromagnetic device provided between the hydraulic pump and the hydraulic jack. A first hydraulic pressure detector for detecting the hydraulic pressure of the solenoid valve on the hydraulic jack side in an elevator having a valve and controlling the operating speed of the hydraulic jack by controlling the flow rate of pressure oil by the hydraulic pump; A second hydraulic pressure detector for detecting the hydraulic pressure of the solenoid valve on the hydraulic pump side is provided, and the output of the first hydraulic pressure detector and the output of the second hydraulic pressure detector are compared when the car is started. A control device for a hydraulic elevator, comprising a startup control circuit for opening the solenoid valve after controlling the flow rate of the pressure oil of the hydraulic pump so that the difference is within a predetermined range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154207A JPH0742057B2 (en) | 1989-06-16 | 1989-06-16 | Hydraulic elevator controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154207A JPH0742057B2 (en) | 1989-06-16 | 1989-06-16 | Hydraulic elevator controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0323169A JPH0323169A (en) | 1991-01-31 |
| JPH0742057B2 true JPH0742057B2 (en) | 1995-05-10 |
Family
ID=15579185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1154207A Expired - Fee Related JPH0742057B2 (en) | 1989-06-16 | 1989-06-16 | Hydraulic elevator controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0742057B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162296A (en) * | 2010-02-08 | 2011-08-25 | Mitsubishi Electric Corp | Abnormality detecting device of hydraulic elevator |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2880193B2 (en) * | 1989-09-20 | 1999-04-05 | 株式会社日立製作所 | Hydraulic elevator control device |
| JP2505644B2 (en) * | 1990-11-20 | 1996-06-12 | 三菱電機株式会社 | Hydraulic elevator drive controller |
| JPH0570045A (en) * | 1991-09-13 | 1993-03-23 | Hitachi Ltd | Control device for hydraulic elevator |
-
1989
- 1989-06-16 JP JP1154207A patent/JPH0742057B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162296A (en) * | 2010-02-08 | 2011-08-25 | Mitsubishi Electric Corp | Abnormality detecting device of hydraulic elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323169A (en) | 1991-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |