JP2684821B2 - Hydraulic elevator equipment - Google Patents
Hydraulic elevator equipmentInfo
- Publication number
- JP2684821B2 JP2684821B2 JP2141895A JP14189590A JP2684821B2 JP 2684821 B2 JP2684821 B2 JP 2684821B2 JP 2141895 A JP2141895 A JP 2141895A JP 14189590 A JP14189590 A JP 14189590A JP 2684821 B2 JP2684821 B2 JP 2684821B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pressure oil
- valve
- hydraulic
- car
- 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
Landscapes
- Elevator Control (AREA)
- Types And Forms Of Lifts (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装置およびその制御装置に
関するものである。Description: TECHNICAL FIELD The present invention relates to a hydraulic elevator device and its control device.
第３図は従来の油圧エレベータ装置の構成を示すもの
で，（１）は油圧ジヤツキ（２）は油圧ジヤツキ（１）
に支持されたかご，（３）は可逆回転可能な油圧ポン
プ，（４）は油圧ポンプ（３）を駆動する電動機，
（５）は主室（5a）と，弁体（5b）を介して主室（5a）
と離隔された背室（5c）とを有し，油圧ジヤツキ（１）
と油圧ポンプ（３）との間に主室（5a）が接続され，背
室（5c）内への圧油の流入出により弁体（5b）を作動さ
せて油圧ジヤツキ（１）と油圧ポンプ（３）との間の油
圧流路を開閉し，かご（２）が昇降している時は開口
し，かご（２）が停止している時は閉止する開閉弁，
（６）は油圧ジヤツキ（１）と開閉弁（５）と油圧ポン
プ（３）とを順に接続した油圧の主回路，（７）はフイ
ルタ，（８）は油槽，（９）は油圧ジヤツキ（１）と開
閉弁（５）の背室（5c）とを接続する圧油流入回路（9
a）および開閉弁（５）の背室（5c）と油槽（８）とを
接続する圧油排出回路（9b）とからなるパイロツト回
路，（10）は圧油排出回路（9b）に設けられた圧油排出
回路（9b）を開路または閉路させる常時閉形の電磁弁，
（11）は圧油流入回路（9a）に設けられた可変絞り弁，
（12）は圧油排出回路（9b）に設けられた可変絞り弁，
（13）は電磁弁（10）の開閉制御と油圧ポンプ（３）を
駆動する電動機（４）を制御する制御装置である。な
お，主回路（６）のうち開閉弁（５）と油圧ポンプ
（３）の間を第１回路（6a），油圧ジヤツキ（１）と開
閉弁（５）の間を第２回路（6b）とする。また、パイロ
ツト回路（９）に設けられた可変絞り弁（11）は可変絞
り弁（12）より絞り度合が大きくしてあり，油圧の通過
流量は可変絞り弁（12）の方が多い。FIG. 3 shows the structure of a conventional hydraulic elevator device. (1) is a hydraulic jack (2) is a hydraulic jack (1).
A cage supported by the, (3) a reversibly rotatable hydraulic pump, (4) an electric motor for driving the hydraulic pump (3),
(5) is the main chamber (5a) and the main chamber (5a) via the valve body (5b)
And a back chamber (5c) separated from each other, and a hydraulic jack (1)
The main chamber (5a) is connected between the hydraulic pump (3) and the hydraulic pump (3), and the valve body (5b) is actuated by the inflow and outflow of the pressure oil into the back chamber (5c) to operate the hydraulic jack (1) and the hydraulic pump. An on-off valve that opens and closes the hydraulic flow path to and from (3) and opens when the car (2) moves up and down and closes when the car (2) is stopped,
(6) is a main hydraulic circuit in which a hydraulic jack (1), an on-off valve (5) and a hydraulic pump (3) are sequentially connected, (7) is a filter, (8) is an oil tank, and (9) is a hydraulic jack ( 1) and the back chamber (5c) of the on-off valve (5) connecting the pressure oil inflow circuit (9
A pilot circuit (a) and a pressure oil discharge circuit (9b) connecting the back chamber (5c) of the on-off valve (5) and the oil tank (8), and (10) are provided in the pressure oil discharge circuit (9b). Normally closed solenoid valve that opens or closes the pressure oil discharge circuit (9b),
(11) is a variable throttle valve provided in the pressure oil inflow circuit (9a),
(12) is a variable throttle valve provided in the pressure oil discharge circuit (9b),
Reference numeral (13) is a control device for controlling the opening / closing of the solenoid valve (10) and the electric motor (4) for driving the hydraulic pump (3). In the main circuit (6), the first circuit (6a) is between the on-off valve (5) and the hydraulic pump (3), and the second circuit (6b) is between the hydraulic jack (1) and the on-off valve (5). And Further, the variable throttle valve (11) provided in the pilot circuit (9) has a larger throttle degree than the variable throttle valve (12), and the variable throttle valve (12) has a larger hydraulic flow rate.
次に，上記のような構成の従来の油圧エレベータ装置
の動作について説明する。Next, the operation of the conventional hydraulic elevator device configured as described above will be described.
まず、かご（２）の上昇運転について説明する。 First, the ascending operation of the car (2) will be described.
上昇運転指令が油圧エレベータの運転制御装置（図示
せず）から出ると制御装置（13）により電動機（４）が
回転方向および回転速度を制御されて運転され，これに
接続された油圧ポンプ（３）が駆動されて，第１回路
（6a）の油圧が上昇する。そして第１回路（6a）の油圧
が第２回路（6b）の油圧と同圧となつたことを検出装置
（図示せず）が検出して，制御装置（13）にりパイロツ
ト回路（９）の圧油排出回路（9b）に設けられた電磁弁
（10）が付勢されると圧油排出回路（9b）が開路する。
これにより開閉弁（５）の背室（5c）内の圧油が圧油排
出回路（9b）を通つて油槽（８）へ排出された開閉弁
（５）が開口する。この後，制御装置（13）により所定
の上昇パターンに従つて電動機（４）が運転されると，
油圧ポンプ（３）が駆動されて油圧ポンプ（３）から吐
出された圧油が開閉弁（５）を通つて油圧ジヤツキ
（１）に流入しかご（２）は上昇する。When the ascending operation command is issued from the operation control device (not shown) of the hydraulic elevator, the control device (13) operates the electric motor (4) by controlling the rotation direction and the rotation speed, and the hydraulic pump (3) connected to the electric motor (4). ) Is driven, and the hydraulic pressure in the first circuit (6a) rises. Then, a detection device (not shown) detects that the hydraulic pressure of the first circuit (6a) is the same as the hydraulic pressure of the second circuit (6b), and the control device (13) returns to the pilot circuit (9). When the solenoid valve (10) provided in the pressure oil discharge circuit (9b) is energized, the pressure oil discharge circuit (9b) opens.
As a result, the on-off valve (5) in which the pressure oil in the back chamber (5c) of the on-off valve (5) passes through the pressure oil discharge circuit (9b) and is discharged to the oil tank (8) opens. After that, when the electric motor (4) is driven by the control device (13) according to a predetermined rising pattern,
The hydraulic pump (3) is driven, and the pressure oil discharged from the hydraulic pump (3) passes through the on-off valve (5) and flows into the hydraulic jack (1), so that the cage (2) rises.
かご（２）を停止させる時は，制御装置（13）により
所定の停止パターンに従つて電動機（４）が制御され，
これに接続された油圧ポンプ（３）が駆動される。そし
て，かご（２）の停止階までくると油圧ポンプ（３）か
らの圧油の吐出がなくなり，かご（２）を停止階の位置
に保持するための油圧だけが発生している。この状態で
圧油排出回路（9b）に設けられた電磁弁（10）が消勢さ
れた圧油排出回路（9b）が閉路されて油槽（８）への圧
油の排出が阻止されると，油圧ジヤツキ（１）の圧油が
圧油流入回路（9a）を通つて開閉弁（５）の背室（5c）
に流入し開閉弁（５）が閉止する。これによりかご
（２）は確実に停止する。When stopping the car (2), the control device (13) controls the electric motor (4) according to a predetermined stop pattern,
The hydraulic pump (3) connected to this is driven. Then, when the car (2) reaches the stop floor, the pressure oil is not discharged from the hydraulic pump (3), and only the hydraulic pressure for keeping the car (2) at the stop floor is generated. In this state, when the solenoid valve (10) provided in the pressure oil discharge circuit (9b) is deenergized and the pressure oil discharge circuit (9b) is closed, the discharge of the pressure oil to the oil tank (8) is blocked. , Pressure oil of the hydraulic jack (1) passes through the pressure oil inflow circuit (9a) and the back chamber (5c) of the on-off valve (5)
And the on-off valve (5) closes. This ensures that the car (2) will stop.
次に，かご（２）の下降運転について説明する。 Next, the descent operation of the car (2) will be described.
下降運転指令が出ると制御装置（13）により電磁弁
（10）が付勢されて圧油排出回路（9b）が開路する。こ
れにより開閉弁（５）の背室（5c）の圧油が油槽（８）
へ排出されて開閉弁（５）が開口する。開閉弁（５）が
開口すると油圧ジヤツキ（１）内の圧油は，かご（２）
の自重により押し出されて油圧ジヤツキ（１）→開閉弁
（５）→油圧ポンプ（３）→フイルタ（７）を経て油槽
（８）へ排出される。この時，同時に制御装置（13）に
より電動機（４）がかご（２）の上昇時とは逆方向に起
動されており，油圧ポンプ（３）が油圧ジヤツキ（１）
内の圧油の排出を行う。しかし，油圧ポンプ（３）で排
出する油量よりも，油圧ジヤツキ（１）からかご（２）
の自重により押しされてくる油量の方が多いため，この
油流で油圧ポンプ（３）が駆動されて，油圧ポンプ
（３）に接続された電動機（４）が発電運転される。従
つて制御装置（13）により電動機（４）の発電量を制御
することにより所定の運転パターンに従つてかご（２）
は下降する。When a descending operation command is issued, the solenoid valve (10) is energized by the control device (13) to open the pressure oil discharge circuit (9b). As a result, the pressure oil in the back chamber (5c) of the on-off valve (5) is transferred to the oil tank (8).
And the on-off valve (5) is opened. When the on-off valve (5) is opened, the pressure oil in the hydraulic jack (1) is stored in the car (2).
Is pushed out by its own weight and is discharged to the oil tank (8) through the hydraulic jack (1) → opening / closing valve (5) → hydraulic pump (3) → filter (7). At this time, at the same time, the electric motor (4) is started by the control device (13) in the direction opposite to that when the car (2) is raised, and the hydraulic pump (3) is moved to the hydraulic jack (1).
The pressure oil inside is discharged. However, rather than the amount of oil discharged by the hydraulic pump (3), the hydraulic jack (1) to the car (2)
Since the amount of oil pushed by the own weight is larger, the hydraulic pump (3) is driven by this oil flow, and the electric motor (4) connected to the hydraulic pump (3) is operated to generate electricity. Therefore, by controlling the amount of power generation of the electric motor (4) by the control device (13), the car (2) follows the predetermined operation pattern.
Descends.
上記のような従来の油圧エレベータ装置においては，
例えばかご（２）の上昇運転指令が出ると，まず開閉弁
（５）が開口し，その後，僅かな時間の遅れがあつて油
圧ポンプ（３）からの圧油が油圧ジヤツキ（１）内へ流
入をはじめ，かご（２）は上昇を開始する。In the conventional hydraulic elevator device as described above,
For example, when a command to raise the car (2) is issued, the on-off valve (5) opens first, and after that, there is a slight delay and the pressure oil from the hydraulic pump (3) enters the hydraulic jack (1). Beginning the inflow, the car (2) begins to rise.
すなわちかご（２）の上昇運転では，まず，電磁弁
（10）が動作し，圧油排出回路（9b）が開路して，開閉
弁（５）の背室（5c）の圧油が油槽（８）へ排出され，
開閉弁（５）が開口する。That is, in the ascending operation of the car (2), first, the solenoid valve (10) operates, the pressure oil discharge circuit (9b) opens, and the pressure oil in the back chamber (5c) of the on-off valve (5) transfers to the oil tank ( 8) is discharged to
The on-off valve (5) opens.
しかしこれと同時に油圧ジヤツキ（１）内の圧油がパ
イロツト回路（９），すなわち油圧ジヤツキ（１）→可
変絞り弁（11）→電磁弁（10）→可変絞り弁（12）を通
つて油槽（８）へ排出されるため，かご（２）は一旦，
下降をはじめる。この直後に上昇側に駆動をはじめた油
圧ポンプ（３）からの圧油が油圧ジヤツキ（１）内に注
入されるため，下降状態のかご（２）が急に上昇をはじ
めて，いわゆる起動シヨツクが起きるという問題点があ
つた。At the same time, however, the pressure oil in the hydraulic jack (1) passes through the pilot circuit (9), that is, the hydraulic jack (1) → variable throttle valve (11) → solenoid valve (10) → variable throttle valve (12) to the oil tank. As the car (2) is once discharged to (8),
The descent begins. Immediately after this, the pressure oil from the hydraulic pump (3) that started to drive to the ascending side is injected into the hydraulic jack (1), so that the car (2) in the descending state begins to ascend suddenly, causing a so-called startup shock. There was a problem that it would happen.
また，かご（２）を下降させる時にも，かご（２）の
上昇運転時と同様に起動シヨツクが起きる。しかし，こ
の起動シヨツクはかご（２）の上昇運転時に比較すれば
少い。In addition, when the car (2) is lowered, the starting shock occurs as in the case of the ascending operation of the car (2). However, this start-up is small compared to the ascending operation of the car (2).
この発明は，上記のような問題点を解決するためなさ
れたもので，油圧エレベータ装置のかご（２）を上昇ま
たは下降させる際，発生する起動シヨツクをなくし，安
定した起動ができる油圧エレベータ装置およびその制御
装置を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and eliminates a starting shock that occurs when raising or lowering a car (2) of a hydraulic elevator device, and a hydraulic elevator device capable of stable starting. It is intended to provide the control device.
この発明にかかる油圧エレベータ装置は、油圧ジャッ
キに支持されたかご、上記油圧ジャッキに接続されて電
動機により駆動される油圧ポンプ、上記油圧ポンプ用の
油を貯溜する油槽と、主室と弁体を介して上記主室と隔
離された背室とを有し、上記油圧ジャッキと上記油圧ポ
ンプとの間に上記主室が接続され、上記背室への油の流
入出により上記弁体を作動させ上記油圧ジャッキと上記
油圧ポンプとの間の油圧流路を開閉し、上記かごの昇降
時には開口し、停止時には閉止する開閉弁、上記油圧ジ
ャッキと上記開閉弁の背室とを接続する圧油流入回路お
よび上記開閉弁の背室と上記油槽とを接続する圧油排出
回路とからなるパイロット回路、上記パイロット回路に
設けられ、上記圧油流入回路または上記圧油排出回路を
開路または閉路させる電磁弁、上記電磁弁を上記かごの
昇降時および停止時に対応させて開閉制御する制御装置
を備え、上記開閉弁を開口する時、上記パイロット回路
の上記圧油流入回路を閉路すると同時、またはその後
に、上記パイロット回路の上記圧油排出回路を開路する
ものである。A hydraulic elevator apparatus according to the present invention includes a car supported by a hydraulic jack, a hydraulic pump connected to the hydraulic jack and driven by an electric motor, an oil tank for storing oil for the hydraulic pump, a main chamber and a valve body. Has a back chamber separated from the main chamber, the main chamber is connected between the hydraulic jack and the hydraulic pump, and the valve element is operated by the inflow and outflow of oil into the back chamber. An on-off valve that opens and closes the hydraulic flow path between the hydraulic jack and the hydraulic pump, opens when the car moves up and down, and closes when the car stops, and pressure oil inflow that connects the hydraulic jack and the back chamber of the on-off valve. Circuit and a pilot circuit consisting of a pressure oil discharge circuit that connects the back chamber of the on-off valve and the oil tank, and is provided in the pilot circuit, and opens or closes the pressure oil inflow circuit or the pressure oil discharge circuit. A solenoid valve is provided with a control device for controlling the opening / closing of the solenoid valve in response to the car ascending / descending and stopping, and at the time of opening the switch valve, simultaneously with closing the pressure oil inflow circuit of the pilot circuit, or thereafter. In addition, the pressure oil discharge circuit of the pilot circuit is opened.
また、開閉弁を閉止する時、パイロット回路の圧油排
出回路を閉路すると同時、またはその後に、上記パイロ
ット回路の圧油流入回路を開路するものである。Further, when the on-off valve is closed, the pressure oil discharge circuit of the pilot circuit is closed, or at the same time, or after that, the pressure oil inflow circuit of the pilot circuit is opened.
上記のように構成された油圧エレベータ装置は，パイ
ロツト回路に電磁弁を設け，この電磁弁により圧油流入
回路または圧油排出回路を開路または閉路し，この電磁
弁はかごの昇降時および停止時に対応させて制御され
る。In the hydraulic elevator device constructed as described above, a solenoid valve is provided in the pilot circuit, and the solenoid valve opens or closes the pressure oil inflow circuit or the pressure oil discharge circuit, and this solenoid valve is used when the car is moved up and down and stopped. It is controlled correspondingly.
また，上記のように構成された油圧エレベータ装置の
制御装置は，パイロツト回路に設けられた電磁弁を動作
させて圧油排出回路を開路させると同時，まは，その後
に圧油流入回路を閉路させるので，かごの昇降時に油圧
ジヤツキ内の圧油がパイロツト回路を通つて直接，油槽
へ排出されることがない。Further, the control device for the hydraulic elevator device configured as described above operates the solenoid valve provided in the pilot circuit to open the pressure oil discharge circuit, or at the same time, closes the pressure oil inflow circuit. Therefore, when the car is moved up and down, the pressure oil in the hydraulic jack is not discharged directly to the oil tank through the pilot circuit.
以下，この発明の実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
図中，第３図に示された従来装置と同一または相当部
分については同一符号を付し，その説明は省略し相違す
る部分を説明する。In the figure, the same or corresponding parts as those of the conventional device shown in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted and different parts will be described.
（15）はパイロツト回路（９）の圧油流入回路（9a）
に設けられ圧油流入回路（9a）を開路または閉路させる
常時開形電磁弁，（16）は電磁弁（10）（15）の開閉制
御と油圧ポンプ（３）を駆動する電動機（４）の制御と
を行う制御装置である。(15) is the pressure oil inflow circuit (9a) of the pilot circuit (9)
Is a normally open solenoid valve that opens or closes the pressure oil inflow circuit (9a), and (16) controls the opening and closing of solenoid valves (10) and (15) and the electric motor (4) that drives the hydraulic pump (3). It is a control device that performs control.
次に，この実施例の動作について説明する。 Next, the operation of this embodiment will be described.
まず，かご（２）の上昇運転について説明する。 First, the ascending operation of the car (2) will be described.
上昇運転指令が油圧エレベータの運転制御装置（図示
せず）から出ると制御装置（16）により電動機（４）が
回転方向および回転速度を制御されて運転され，これに
接続された油圧ポンプ（３）が駆動されて第１回路（6
a）の油圧が上昇する。そして第１回路（6a）の油圧が
第２回路（6b）の油圧と同圧となつたことを検出装置
（図示せず）で検出し，制御装置（16）により圧油流入
回路（9a）に設けられた電磁弁（15）が付勢されると，
圧油流入回路（9a）が閉路されて圧油流入回路（9a）の
圧油の流れが阻止される。これと同時または，この後
に，制御装置（16）により圧油排出回路（9b）に設けら
れた電磁弁（10）が付勢されて圧油排出回路（9b）が開
路する。これにより開閉弁（５）の背室（5c）内の圧油
が，圧油排出回路（9b）を通つて油槽（８）へ排出され
開閉弁は開口する。この後，制御装置（16）により所定
の上昇パターンに従つて電動機（４）が運転されると，
油圧ポンプ（３）が駆動されて油圧ポンプ（３）から吐
出された圧油が開閉弁（５）を通つて油圧ジヤツキ
（１）に流入しかご（２）は上昇する。When the ascending operation command is issued from the operation control device (not shown) of the hydraulic elevator, the control device (16) operates the electric motor (4) by controlling the rotation direction and the rotation speed, and the hydraulic pump (3) connected thereto. ) Is driven and the first circuit (6
The hydraulic pressure of a) rises. Then, the detection device (not shown) detects that the oil pressure of the first circuit (6a) is the same as the oil pressure of the second circuit (6b), and the control device (16) causes the pressure oil inflow circuit (9a). When the solenoid valve (15) provided on the
The pressure oil inflow circuit (9a) is closed to block the flow of pressure oil in the pressure oil inflow circuit (9a). At the same time as or after this, the control device (16) urges the solenoid valve (10) provided in the pressure oil discharge circuit (9b) to open the pressure oil discharge circuit (9b). As a result, the pressure oil in the back chamber (5c) of the on-off valve (5) is discharged to the oil tank (8) through the pressure oil discharge circuit (9b), and the on-off valve opens. After that, when the control device (16) operates the electric motor (4) according to a predetermined rising pattern,
The hydraulic pump (3) is driven, and the pressure oil discharged from the hydraulic pump (3) passes through the on-off valve (5) and flows into the hydraulic jack (1), so that the cage (2) rises.
かご（２）を停止させる時は，制御装置（16）により
所定の停止パターンに従つて電動機（４）が制御され，
これに接続された油圧ポンプ（３）が駆動されて，かご
（２）の停止階にくると油圧ポンプ（３）からの圧油の
吐出がなくなり，かご（２）を停止階位置に保持するた
めの油圧だけが発生している。この状態で圧油排出回路
（9b）に設けけられた電磁弁（10）が消勢されと圧油排
出回路（9b）が閉路されて油槽（８）への圧油の排出が
阻止される。これと同時または，この後に制御装置（1
6）により圧力流入回路（9a）に設けられた電磁弁（1
5）が消勢され圧油流入回路（9a）が開路する。When stopping the car (2), the control device (16) controls the electric motor (4) according to a predetermined stop pattern,
When the hydraulic pump (3) connected to this is driven to reach the stop floor of the car (2), pressure oil is no longer discharged from the hydraulic pump (3), and the car (2) is held at the stop floor position. Only the hydraulic pressure is generated. In this state, when the solenoid valve (10) provided in the pressure oil discharge circuit (9b) is deenergized, the pressure oil discharge circuit (9b) is closed to prevent discharge of the pressure oil to the oil tank (8). . At the same time or after this, the control device (1
6) The solenoid valve (1) provided in the pressure inflow circuit (9a)
5) is de-energized and the pressure oil inflow circuit (9a) opens.
これにより油圧ジヤツキ（１）の圧油が圧油流入回路
を通つて開閉弁（５）の背室（5c）へ流入し開閉弁
（５）が停止させるのでかご（２）は確実に停止する。As a result, the pressure oil of the hydraulic jack (1) passes through the pressure oil inflow circuit and flows into the back chamber (5c) of the opening / closing valve (5) to stop the opening / closing valve (5), so that the car (2) surely stops. .
かご（２）の下降運転時は，かご（２）の上昇運転時
と同じ方法で開閉弁（５）が開口する。この後，制御装
置（16）により電動機（４）が所定の運転パターンに従
つて制御されて，かご（２）は下降するが，これは従来
装置と同一につき説明は省略する。During the descent operation of the car (2), the on-off valve (5) opens in the same manner as during the ascending operation of the car (2). After that, the electric motor (4) is controlled by the control device (16) in accordance with a predetermined operation pattern, and the car (2) descends. However, this is the same as the conventional device, and a description thereof will be omitted.
この実施例においては，圧油流入回路（9a）に常時開
形の電磁弁（15）が設けてあり圧油流入回路（9a）が閉
路したと同時，または，その直後に圧油排出回路（9b）
が開路する。従つて，油圧ジヤツキ（１）内の圧油がパ
イロツト回路（９）を通つて直接油槽（８）へ排出され
ることがないので，かご（２）の上昇または下降が開始
時に従来装置のような起動シヨツクは起こらない。In this embodiment, a normally open solenoid valve (15) is provided in the pressure oil inflow circuit (9a) and the pressure oil inflow circuit (9a) is closed at the same time or immediately after that. 9b)
Opens. Therefore, since the pressure oil in the hydraulic jack (1) does not pass through the pilot circuit (9) and is not discharged directly to the oil tank (8), the car (2) rises or falls like a conventional device at the start. The startup will not occur.
第２図は，この発明による他の実施例を示すもので，
図中，第３図に示された従来装置と同一または相当部分
については，同一符号を付し，その説明は省略し相違す
る部分を説明する。（17）はパイロツト回路に設けられ
た電磁弁で，この電磁弁（17）は油圧ジヤツキ（１）と
開閉弁（５）の背室（5c）と油槽（８）とに接続され
て，圧油流入回路（9a）および圧油排出回路（9b）の開
閉を行うもので，圧油流入回路（9a）を開とした時には
圧油排出回路（9b）を閉とし，逆に圧油排出回路（9b）
を閉とした時には圧油流入回路（9a）が開とするよう構
成されている。（18）は，電磁弁（17）の開閉制御と油
圧ポンプ（３）を駆動する電動機（４）の制御を行う制
御装置である。FIG. 2 shows another embodiment according to the present invention,
In the figure, those parts which are the same as or correspond to those of the conventional device shown in FIG. (17) is a solenoid valve provided in the pilot circuit. This solenoid valve (17) is connected to the hydraulic jack (1), the back chamber (5c) of the opening / closing valve (5), and the oil tank (8), The oil inflow circuit (9a) and the pressure oil discharge circuit (9b) are opened and closed. When the pressure oil inflow circuit (9a) is opened, the pressure oil discharge circuit (9b) is closed, and vice versa. (9b)
When is closed, the pressure oil inflow circuit (9a) is opened. Reference numeral (18) is a control device that controls the opening / closing of the solenoid valve (17) and the electric motor (4) that drives the hydraulic pump (3).
この実施例では，かご（２）を昇降させるため，制御
装置（18）により電磁弁（17）を付勢すると，圧油流入
回路（9a）が閉路し，圧油排出回路（9b）が開路する。
これにより，開閉弁（５）内の圧油が圧油排出回路（9
b）を通つて油槽（８）へ排出されるので，開閉弁
（５）が開口する。また，かご（２）を停止されるため
制御装置（18）により電磁弁（17）を消勢すると，圧油
流入回路（9a）が開路し，圧油排出回路（9b）が閉路す
る。これにより，油圧ジヤツキ（１）内の圧油が圧油流
入回路（9a）を通つて開閉弁（５）の背室（5c）内に流
入するので，開閉弁（５）は閉止する。In this embodiment, when the control device (18) urges the solenoid valve (17) to raise and lower the car (2), the pressure oil inflow circuit (9a) is closed and the pressure oil discharge circuit (9b) is opened. To do.
As a result, the pressure oil in the on-off valve (5) will be
Since it is discharged to the oil tank (8) through b), the on-off valve (5) opens. When the control device (18) deactivates the solenoid valve (17) to stop the car (2), the pressure oil inflow circuit (9a) opens and the pressure oil discharge circuit (9b) closes. As a result, the pressure oil in the hydraulic jack (1) flows into the back chamber (5c) of the opening / closing valve (5) through the pressure oil inflow circuit (9a), so that the opening / closing valve (5) is closed.
これ以外は，第１図に示す実施例と同一のため説明は
省略するが，この実施例においては，第１図の実例例に
示した電磁弁（10）（15）に代つて，パイロツト回路
（９）に圧油流入回路（9a）を開とした時には圧油排出
回路（9b）を閉とし，逆に圧油排出回路（9b）を閉とし
た時には圧油流入回路（9a）が開となるよう構成された
電磁弁（17）を設けたので，油圧ジヤツキ（１）内の圧
油がパイロツト回路（９）を通つて直接，油槽（８）へ
排出されることはない。Except for this, the description is omitted because it is the same as the embodiment shown in FIG. 1, but in this embodiment, instead of the solenoid valves (10) and (15) shown in the example of FIG. 1, a pilot circuit is used. When the pressure oil inflow circuit (9a) is opened to (9), the pressure oil discharge circuit (9b) is closed. Conversely, when the pressure oil discharge circuit (9b) is closed, the pressure oil inflow circuit (9a) is opened. Since the solenoid valve (17) configured as described above is provided, the pressure oil in the hydraulic jack (1) is not discharged directly to the oil tank (8) through the pilot circuit (9).
以上説明したとおり、この発明による油圧エレベータ
装置は、開閉弁を開口してエレベータを起動する時、パ
イロツト回路の圧油流入回路を閉路すると同時、または
その後に、パイロット回路の圧油排出回路を開路するこ
とにより、かごの昇降時に、油圧ジャッキ内の圧油がパ
イロット回路を通って直接油槽へ排出されることがない
ため、かごの昇降時に起動ショックがほとんど起きず乗
り心地を改善できる効果がある。As described above, the hydraulic elevator apparatus according to the present invention opens the pressure oil discharge circuit of the pilot circuit at the same time as closing the pressure oil inflow circuit of the pilot circuit when opening the on-off valve and starting the elevator. By doing so, when the car is moved up and down, the pressure oil in the hydraulic jack will not be discharged directly to the oil tank through the pilot circuit, so there is almost no starting shock when the car is moved up and down, and the riding comfort can be improved. .
また、開閉弁を閉止してエレベータを停止する時、パ
イロット回路の圧油排出回路を閉路すると同時、または
その後に、パイロット回路の圧油流入回路を開路するこ
とにより、起動シャックがほとんど起きることなく、か
ごを確実に停止させることができる。Also, when closing the on-off valve and stopping the elevator, the pressure oil discharge circuit of the pilot circuit is closed at the same time or after that, the pressure oil inflow circuit of the pilot circuit is opened, and the start shack hardly occurs. , The car can be stopped surely.
第１図は，この発明の一実施例による油圧エレベータ装
置を示す油圧回路図，第２図は，この発明の他の実施例
を示す第１図相当図，第３図は従来の油圧エレベータ装
置を示す油圧回路図である。 （１）……油圧ジヤツキ，（２）……かご，（３）……
油圧ポンプ，（５）……開閉弁，（９）……パイロツト
回路，（10）（15）（17）……電磁弁，（13）（16）
（18）……制御装置。 なお，図中同一部分または相当部分は同一符号により示
す。FIG. 1 is a hydraulic circuit diagram showing a hydraulic elevator apparatus according to an embodiment of the present invention, FIG. 2 is a view corresponding to FIG. 1 showing another embodiment of the present invention, and FIG. 3 is a conventional hydraulic elevator apparatus. 3 is a hydraulic circuit diagram showing FIG. (1) …… hydraulic jack, (2) …… basket, (3) ……
Hydraulic pump, (5) ... Open / close valve, (9) ... Pilot circuit, (10) (15) (17) ... Solenoid valve, (13) (16)
(18) …… Control device. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 下秋 元雄 愛知県稲沢市菱町１番地 三菱電機株式 会社稲沢製作所内 (72)発明者 牛田 博 愛知県稲沢市菱町１番地 三菱電機株式 会社稲沢製作所内 (56)参考文献 実公 昭61−19187（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoo Shimoaki 1 Hishimachi, Inazawa, Aichi Prefecture Inazawa Manufacturing Co., Ltd. (72) Inventor Hiroshi Ushida 1 Hishimachi, Inazawa, Aichi Mitsubishi Electric Corporation Inazawa Seisakusho (56) Bibliography Sho 61-19187 (JP, Y2)
Claims (2)
ジャッキに接続されて電動機により駆動される油圧ポン
プ、上記油圧ポンプ用の油を貯溜する油槽と、主室と弁
体を介して上記主室と隔離された背室とを有し、上記油
圧ジャッキと上記油圧ポンプとの間に上記主室が接続さ
れ、上記背室への油の流入出により上記弁体を作動させ
上記油圧ジャッキと上記油圧ポンプとの間の油圧流路を
開閉し、上記かごの昇降時には開口し、停止時には閉止
する開閉弁、上記油圧ジャッキと上記開閉弁の背室とを
接続する圧油流入回路および上記開閉弁の背室と上記油
槽とを接続する圧油排出回路とからなるパイロット回
路、上記パイロット回路に設けられ、上記圧油流入回路
または上記圧油排出回路を開路または閉路させる電磁
弁、上記電磁弁を上記かごの昇降時および停止時に対応
させて開閉制御する制御装置を備え、上記開閉弁を開口
する時、上記パイロット回路の上記圧油流入回路を閉路
すると同時、またはその後に、上記パイロット回路の上
記圧油排出回路を開路することを特徴とする油圧エレベ
ータ装置。1. A car supported by a hydraulic jack, a hydraulic pump connected to the hydraulic jack and driven by an electric motor, an oil tank for storing oil for the hydraulic pump, and a main chamber and a valve body through the main chamber. A chamber and a back chamber isolated from each other, the main chamber is connected between the hydraulic jack and the hydraulic pump, and the valve body is actuated by the inflow and outflow of oil to and from the back chamber. An on-off valve that opens and closes a hydraulic flow path with the hydraulic pump, opens when the car moves up and down, and closes when the car stops, a pressure oil inflow circuit that connects the hydraulic jack and the back chamber of the on-off valve, and the opening and closing. A pilot circuit consisting of a pressure oil discharge circuit connecting the back chamber of the valve and the oil tank, a solenoid valve provided in the pilot circuit for opening or closing the pressure oil inflow circuit or the pressure oil discharge circuit, and the solenoid valve The above It is equipped with a control device that controls opening and closing in response to lifting and stopping of the car, and at the same time as closing the pressure oil inflow circuit of the pilot circuit when opening the opening and closing valve, or after that, the pressure of the pilot circuit is changed. A hydraulic elevator device characterized by opening an oil discharge circuit.
油排出回路を閉路すると同時、またはその後に、上記パ
イロット回路の圧油流入回路を開路することを特徴とす
る請求項１に記載の油圧エレベータ装置。2. The pressure oil inflow circuit of the pilot circuit is opened at the same time as or after the pressure oil discharge circuit of the pilot circuit is closed when the on-off valve is closed. Hydraulic elevator equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2141895A JP2684821B2 (en) | 1990-05-31 | 1990-05-31 | Hydraulic elevator equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2141895A JP2684821B2 (en) | 1990-05-31 | 1990-05-31 | Hydraulic elevator equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0439278A JPH0439278A (en) | 1992-02-10 |
| JP2684821B2 true JP2684821B2 (en) | 1997-12-03 |
Family
ID=15302664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2141895A Expired - Fee Related JP2684821B2 (en) | 1990-05-31 | 1990-05-31 | Hydraulic elevator equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2684821B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2893978B2 (en) * | 1991-02-28 | 1999-05-24 | 株式会社日立製作所 | Hydraulic elevator and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6119187U (en) * | 1984-07-10 | 1986-02-04 | 日本鋼管株式会社 | pipe fittings |
-
1990
- 1990-05-31 JP JP2141895A patent/JP2684821B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0439278A (en) | 1992-02-10 |
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