JPS6315259Y2 - - Google Patents
Info
- Publication number
- JPS6315259Y2 JPS6315259Y2 JP1986057922U JP5792286U JPS6315259Y2 JP S6315259 Y2 JPS6315259 Y2 JP S6315259Y2 JP 1986057922 U JP1986057922 U JP 1986057922U JP 5792286 U JP5792286 U JP 5792286U JP S6315259 Y2 JPS6315259 Y2 JP S6315259Y2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- elevator
- hydraulic
- hydraulic oil
- solenoid valve
- 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
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 43
- 230000001174 ascending effect Effects 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 description 5
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はエレベータの停止、微速上昇、全速上
昇、微速下降及び全速下降の各段階に対応して電
子制御用プログラムに従つて作動油流量を設定す
る電子制御式流量可変ソレノイド弁を油圧回路に
装置した油圧エレベータに関する。[Detailed description of the invention] [Field of industrial application] This invention adjusts the flow rate of hydraulic oil according to an electronic control program in response to each stage of elevator stop, slow rise, full speed rise, slow fall, and full speed fall. The present invention relates to a hydraulic elevator in which an electronically controlled variable flow rate solenoid valve for setting is installed in a hydraulic circuit.
本考案者は先に電動機により駆動される油圧ポ
ンプによつて作動油をタンクからジヤツキへ、又
ジヤツキからタンクへ移送してエレベータを昇降
せしめる油圧エレベータにおいて、上記の油圧ポ
ンプにエレベータの昇降に対応して容量を調整さ
れた可変容量型油圧ポンプの代りに安価でしかも
大型の油圧エレベータの製作が可能な定容量型油
圧ポンプを用い、その油圧回路にエレベータの停
止、微速上昇、全速上昇、微速下降及び全速下降
の各段階に対応して電子制御用プログラムに従つ
て作動流量を設定する電子制御式流量可変ソレノ
イド弁を装置し、かつ上記作動油流量が設定値か
らずれると油圧回路に装置した流量計測器が作動
油流量の設定値からのずれをフイードバツク信号
として検出し、このフイードバツク信号によつて
作動油流量を設定値に規正すべく前記電子制御式
流量可変ソレノイド弁の開閉を自動調整するよう
構成され、又上記油圧ポンプ駆動用の電動機とし
て、カゴ型誘導電動機を用いてエレベータの下降
時にはこれを誘導発電機として運転し、その発生
電力を電源に返還することにより電力エネルギー
を大巾に節減することができる油圧エレベータを
開発した。
The present inventor first developed a hydraulic elevator in which hydraulic oil is transferred from a tank to a jack and from the jack to a tank using a hydraulic pump driven by an electric motor to raise and lower the elevator. Instead of a variable displacement hydraulic pump whose capacity is adjusted by adjusting the volume, a constant displacement hydraulic pump is used, which is inexpensive and can be used to manufacture large hydraulic elevators. An electronically controlled variable flow rate solenoid valve is installed to set the operating flow rate according to an electronic control program in response to each stage of descent and full-speed descent, and is installed in the hydraulic circuit when the hydraulic oil flow rate deviates from the set value. A flow meter detects a deviation of the hydraulic oil flow rate from a set value as a feedback signal, and based on this feedback signal, the opening and closing of the electronically controlled variable flow rate solenoid valve is automatically adjusted to regulate the hydraulic oil flow rate to the set value. In addition, a cage type induction motor is used as the motor for driving the hydraulic pump, and when the elevator is going down, it is operated as an induction generator, and the generated power is returned to the power source, thereby increasing the electrical energy. We have developed a hydraulic elevator that can save money.
本考案は上記電子制御用プログラムに従つて作
動油流量を設定する方式の油圧エレベータにおい
て、該電子制御用プログラムの前記エレベータの
各段階に対応してリミツトスイツチを適宜に装置
することによつて、より円滑で効率の良い油圧エ
レベータの運転を可能ならしめたものである。
The present invention provides a hydraulic elevator that sets the hydraulic oil flow rate according to the electronic control program, by appropriately installing a limit switch in accordance with each stage of the elevator in the electronic control program. This enables smooth and efficient hydraulic elevator operation.
本考案の要旨とする所はカゴ型誘導電動機によ
り駆動される定容量型油圧ポンプによつて、作動
油をタンクからジヤツキへ、又ジヤツキからタン
クへ移送してエレベータを昇降せしめる油圧回路
に、エレベータの停止、微速上昇、全速上昇、微
速下降及び全速下降の各段階に対応して電子制御
用プログラムに従つて作動する上昇及び下降用電
子制御式流量可変ソレノイド弁を装置し、該流量
可変ソレノイド弁をリミツトスイツチに連動せし
めて作動油流量を制御するようにした油圧エレベ
ータにおいて、タンク−油圧ポンプ−逆止弁−流
量計測器−ジヤツキからなる作動油主路のポン
プ、逆止弁間の側路に上昇用流量可変ソレノイド
弁を、該主路のポンプ、流量計測器間で逆止弁を
挟む他の側路に下降用流量可変ソレノイド弁をそ
れぞれ配して油圧回路を構成し、エレベータの上
昇に際してはリミツトスイツチを前記電子制御用
プログラムの全速上昇から減速上昇に移行する位
置及び減速上昇から停止に移行する位置に配設し
て、上昇及び停止を円滑ならしめるとともに、下
降に際しては、全速下降時に下降用流量可変ソレ
ノイド弁を通る作動油流量が、油圧ポンプを介し
てタンクに戻される作動油流量よりも多くなる範
囲に設定しておき、全速下降から減速下降に移行
する少し手前の位置でリミツトスイツチにより上
記下降用流量可変ソレノイド弁を通る作動油流量
が上記タンクに戻される作動油流量と同じ範囲に
なるようにし、更に全速下降から減速下降に移行
する位置及び減速下降から停止に移行する位置に
それぞれリミツトスイツチを配設して、下降及び
停止を円滑ならしめるように、２個の流量可変ソ
レノイド弁と５個のリミツトスイツチを組合せて
システムを構成したことを特徴とする油圧エレベ
ータに存するものである。
The gist of this invention is that a fixed displacement hydraulic pump driven by a squirrel-cage induction motor is used to transfer hydraulic oil from a tank to a jack and from the jack to a tank to move the elevator up and down. an electronically controlled variable flow rate solenoid valve for rising and falling that operates according to an electronic control program in response to each stage of stop, slow rise, full speed rise, slow fall and full speed fall; In a hydraulic elevator in which the hydraulic oil flow rate is controlled by interlocking with a limit switch, the main hydraulic oil path consisting of the tank, hydraulic pump, check valve, flow meter, and jack is connected to the pump in the main hydraulic oil path and the side path between the check valve. A hydraulic circuit is constructed by disposing a variable flow rate solenoid valve for ascending and a variable flow rate solenoid valve for descending in the other side passage with a check valve sandwiched between the pump in the main passage and the flow rate measuring device. limit switches are placed at the positions where the electronic control program transitions from full-speed rise to deceleration rise and from deceleration rise to stop to smooth the rise and stop, and when descending, the limit switch Set the hydraulic oil flow rate through the variable flow rate solenoid valve to be higher than the hydraulic oil flow rate returned to the tank via the hydraulic pump, and set the limit switch at a position slightly before the transition from full speed descent to deceleration descent. The flow rate of hydraulic oil passing through the variable flow rate solenoid valve for lowering is in the same range as the flow rate of hydraulic oil returned to the tank, and furthermore, the flow rate of hydraulic oil passing through the variable flow rate solenoid valve for lowering is in the same range as the flow rate of hydraulic oil returned to the tank, and furthermore, the flow rate of hydraulic oil passing through the variable flow rate solenoid valve for lowering is set in the same range as the flow rate of hydraulic oil returned to the tank, and the position where the transition from full speed descent to deceleration descent occurs, and the position where the transition from deceleration descent to stop is determined, respectively. A hydraulic elevator is characterized in that a limit switch is provided and a system is constructed by combining two variable flow rate solenoid valves and five limit switches so as to smoothly descend and stop.
以下に本考案の油圧エレベータを更に詳しく説
明するために添付図面に示す実施例に基き説明す
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The hydraulic elevator of the present invention will be described in more detail below based on embodiments shown in the accompanying drawings.
第１図は本考案の油圧エレベータに係る実施例
１を示し、第２図は本考案の油圧エレベータの電
子制御用プログラムと該エレベータの作動の各段
階に対応して作動するリミツトスイツチの位置を
示すものであり、カゴ型誘導電動機１により駆動
される定容量型油圧ポンプ２によつて作動油をタ
ンク３からジヤツキ４へ、又ジヤツキ４からタン
ク３へ移送してジヤツキ４のラム５を上下動させ
てエレベータを昇降せしめるラム式油圧エレベー
タである。以下にこの油圧エレベータの作動機能
をエレベータの停止、微速上昇、全速上昇、微速
下降及び全速下降の各段階について順次説明す
る。 Fig. 1 shows a first embodiment of the hydraulic elevator of the present invention, and Fig. 2 shows a program for electronic control of the hydraulic elevator of the present invention and the positions of limit switches that operate corresponding to each stage of operation of the elevator. A constant displacement hydraulic pump 2 driven by a cage-type induction motor 1 transfers hydraulic oil from a tank 3 to a jack 4, and from the jack 4 to a tank 3, and moves a ram 5 of a jack 4 up and down. This is a ram-type hydraulic elevator that moves the elevator up and down. Below, the operating functions of this hydraulic elevator will be sequentially explained for each stage of elevator stop, slow rise, full speed rise, slow fall, and full speed fall.
Ａ エレベータの停止段階；
第１図に示すカゴ型誘導電動機１の電源は切
つてあり、上昇用電子制御式流量可変ソレノイ
ド弁６及び下降用電子制御式流量可変ソレノイ
ド弁７の制御電圧Ｖは零で、前者は完全に開い
ており、後者は完全に閉じている。A Stop stage of the elevator: The power to the cage-type induction motor 1 shown in FIG. 1 is turned off, and the control voltage V of the electronically controlled variable flow rate solenoid valve 6 for ascending and the electronically controlled variable flow rate solenoid valve 7 for descending is zero. The former is completely open and the latter is completely closed.
したがつてタンク３からジヤツキ４へ作動油
が移送されず、かつエレベータの自然落下に伴
うジヤツキ４からタンク３への作動油の移動も
逆止弁９によつて阻止されるので、エレベータ
は完全に停止状態にある。 Therefore, the hydraulic oil is not transferred from the tank 3 to the jack 4, and the movement of hydraulic oil from the jack 4 to the tank 3 due to the free fall of the elevator is also prevented by the check valve 9, so that the elevator is completely closed. is in a stopped state.
Ｂ エレベータの微速上昇（加速上昇）段階；
第１図に示すカゴ型誘導電動機１を始動し、
その正転によつて定容量型油圧ポンプ２を駆動
して作動油をタンク３から吸込用フイルタ１０
を通し油圧回路１１に移送する。B: Slow rise (accelerated rise) stage of the elevator; Start the cage-type induction motor 1 shown in Fig. 1,
The forward rotation drives the constant displacement hydraulic pump 2 and draws hydraulic oil from the tank 3 to the suction filter 10.
is transferred to the hydraulic circuit 11 through.
上記電動機１の始動時には、上昇用電子制御
式流量可変ソレノイド弁６は全開しており、従
つて作動油が当該流量可変ソレノイド弁６を通
つてタンク３に戻されるので、ジヤツキ４にラ
ム５を上昇させる油圧が発生しない。 When the electric motor 1 is started, the electronically controlled variable flow rate solenoid valve 6 for lift is fully open, and the hydraulic oil is returned to the tank 3 through the variable flow rate solenoid valve 6. Hydraulic pressure is not generated to raise it.
上記流量可変ソレノイド弁６は第２図に示す
電子制御用プログラムに従つて作動されるもの
であり、この縦軸は流量可変ソレノイド弁を電
子制御するための制御電圧Ｖは又は電流を示
しており、横軸はエレベータの移動距離ｘ又は
時間ｔを示している。 The variable flow rate solenoid valve 6 is operated according to the electronic control program shown in FIG. 2, and the vertical axis indicates the control voltage V or current for electronically controlling the variable flow rate solenoid valve. , the horizontal axis indicates the moving distance x or time t of the elevator.
第２図に示す如く電動機１の始動時（ｘ＝０
又はｔ＝０の位置）は電圧Ｖが零で流量可変ソ
レノイド弁６は全開しており、電圧Ｖが正方向
に増加するに伴い流量可変ソレノイド弁６が次
第に閉じるよう構成されている。 As shown in FIG. 2, when starting the electric motor 1 (x=0
At the position (t=0), the voltage V is zero and the variable flow rate solenoid valve 6 is fully open, and as the voltage V increases in the positive direction, the variable flow rate solenoid valve 6 is configured to gradually close.
したがつて第２図の微速上昇段階に対するプ
ログラム区間Ｂによつて流量可変ソレノイド弁
６が作動されると、電動機１の始動時には流量
可変ソレノイド弁６が全開で定容量型油圧ポン
プ２によつて移送される作動油がすべてタンク
３に戻されるので、ジヤツキ４にラム５を上昇
させる油圧が発生しないが、流量可変ソレノイ
ド弁６の制御電圧Ｖが増加するに伴い、当該弁
６がしだいに閉じ逆止弁９を通つてジヤツキ４
に移送される作動油流量が増大してラム５を上
昇させる油圧が発生する。 Therefore, when the variable flow rate solenoid valve 6 is operated according to the program section B for the slow speed increase stage in FIG. Since all the transferred hydraulic oil is returned to the tank 3, no hydraulic pressure is generated in the jack 4 to raise the ram 5, but as the control voltage V of the variable flow rate solenoid valve 6 increases, the valve 6 gradually closes. Jack 4 through check valve 9
The flow rate of hydraulic oil transferred to increases, and hydraulic pressure is generated to raise the ram 5.
ラム５は電圧Ｖの増加に伴いその上昇速度が
加速されエレベータを加速的に微速上昇させ
る。 As the voltage V increases, the rising speed of the ram 5 accelerates, causing the elevator to rise slowly and acceleratingly.
Ｃ エレベータの全速上昇段階；
第２図の全速上昇段階に対するプログラム区
間Ｃによつて流量可変ソレノイド弁６が作動さ
れると、電圧Ｖが最大電圧Vcで一定に保持さ
れるようになるので流量可変ソレノイド弁６が
完全に閉じるかあるいはわずかに開いた状態に
保持され、微速上昇段階で加速されたエレベー
タは一定の速度で全速上昇するようになる。C Full-speed rising phase of the elevator; When the variable flow rate solenoid valve 6 is operated according to the program section C for the full-speed rising phase in Fig. 2, the voltage V is held constant at the maximum voltage Vc, so the flow rate is variable. The solenoid valve 6 is kept completely closed or slightly opened, and the elevator, which has been accelerated in the slow ascending stage, is allowed to ascend at full speed at a constant speed.
上記エレベータの全速上昇速度は適宜の値に
調整しうるものであり、その速度に対する最大
電圧Vcを適宜に設定することによつてなされ
る。 The full speed rising speed of the elevator can be adjusted to an appropriate value by appropriately setting the maximum voltage Vc for that speed.
B′ エレベータの微速上昇（減速上昇）段階；
エレベータが目的停止階の直下X1の位置ま
で全速上昇するとリミツトスイツチULs−１が
作動し流量可変ソレノイド弁６に減速信号が入
り、すなわち当該弁６は第２図のプログラム区
間B′に従つて作動される。B' Slow rise (decelerated rise) stage of the elevator: When the elevator rises to full speed to the position X1 directly below the target stop floor, the limit switch ULs-1 is activated and a deceleration signal is input to the variable flow rate solenoid valve 6, that is, the valve 6 is It is operated according to program section B' in FIG.
電圧Ｖが最大電圧Vcから減少し、それに伴
い流量可変ソレノイド弁６が開いてジヤツキ４
へ移送される作動油流量が減少しエレベータの
上昇速度が減速し、目的停止階の停止位置X2
の少し手前でリミツトスイツチULs−２が作動
し、停止位置X2までエレベータを微速上昇さ
せ停止する。この時電動機１はエレベータが停
止位置X2に到達後も数秒間回転しその後停止
する。 The voltage V decreases from the maximum voltage Vc, and accordingly the variable flow solenoid valve 6 opens and the jack 4
The flow rate of hydraulic oil transferred to the destination decreases, the elevator ascending speed slows down, and the elevator reaches the stop position X 2 of the target stop floor.
Limit switch ULs-2 is activated a little before the point X2, and the elevator rises at a slow speed to stop position X2 and then stops. At this time, the electric motor 1 continues to rotate for several seconds even after the elevator reaches the stop position X2 , and then stops.
以上の如く本考案のエレベータは始動から加
速上昇、定速全速上昇、減速上昇及び停止に至
るまで第２図のプログラムとリミツトスイツチ
ULs−１及びULs−２に従つて極めてスムーズ
に運行される。 As described above, the elevator of the present invention uses the program and limit switch shown in Figure 2 from start to acceleration up, constant speed full speed up, deceleration up, and stop.
It operates extremely smoothly in accordance with ULs-1 and ULs-2.
Ｄ エレベータの微速下降（加速下降）段階；
第２図に示す電子制御用プログラムの微速下
降段階に対するプログラム区間Ｄによつて下降
用電子制御式流量可変ソレノイド弁７が作動さ
れ、当該流量可変ソレノイド弁７は制御電圧Ｖ
が負の方向に増加するに伴いしだいに開くよう
構成されている。D Slow descent (accelerated descent) phase of the elevator; The electronically controlled variable flow rate solenoid valve 7 for descent is operated by the program section D for the slow descent phase of the electronic control program shown in FIG. 7 is the control voltage V
The structure is such that it gradually opens as the value increases in the negative direction.
また、上記流量可変ソレノイド弁７が作動す
ると、上昇用電子制御式流量可変ソレノイド弁
６にも油圧がかかりクローズ信号により当該弁
６が閉じるように構成されている。第２図のプ
ログラム区間Ｄに従つて流量可変ソレノイド弁
７が作動し、電圧Ｖが負の方向に増大するに伴
つて当該弁７がしだいに開くと、エレベータに
かかる重力によつて作動油はジヤツキ４から流
量可変ソレノイド弁７を通つて定容量型油圧ポ
ンプ２及び電動機１をエレベータの上昇時とは
逆方向に回転駆動しながらタンク３に移送され
る。尚１７は流量可変ソレノイド弁６がパイロ
ツト圧力を確保するためのチエツクバルブであ
る。 Further, when the variable flow rate solenoid valve 7 operates, hydraulic pressure is applied to the electronically controlled upward variable flow rate solenoid valve 6, and the valve 6 is closed by a close signal. The variable flow rate solenoid valve 7 operates according to the program section D in FIG. 2, and as the voltage V increases in the negative direction, the valve 7 gradually opens. The water is transferred from the jack 4 to the tank 3 through the variable flow rate solenoid valve 7 while driving the constant displacement hydraulic pump 2 and electric motor 1 to rotate in the opposite direction to when the elevator is ascending. Note that 17 is a check valve for ensuring the pilot pressure of the variable flow rate solenoid valve 6.
エレベータは電圧Ｖが負の方向に増加するに
伴い加速的に微速下降し、この落下エネルギー
によつて定容量型油圧ポンプ２が駆動される。 As the voltage V increases in the negative direction, the elevator descends at a slow speed, and the constant displacement hydraulic pump 2 is driven by the falling energy.
エレベータが停止位置X2からX3の位置｛電
動機１の回転によりジヤツキ４からタンク３に
戻る作動油流量が最大の時点即ち最大下降速度
の手前｝まで任意の時点に下降した時、カゴ型
誘導電動機１を通電作動させるが、このカゴ型
誘導電動機１は上記油圧ポンプ２によつて強制
駆動され誘導発電機として働くのでエレベータ
の落下エネルギをこの誘導発電機における発生
電力に返還することができる。 When the elevator descends from the stop position X 2 to the position X 3 {the point at which the flow of hydraulic oil returning from the jack 4 to the tank 3 due to the rotation of the electric motor 1 is at its maximum, that is, just before the maximum descending speed}, the cage type induction The electric motor 1 is energized and operated, and since the cage type induction motor 1 is forcibly driven by the hydraulic pump 2 and works as an induction generator, the falling energy of the elevator can be returned to the electric power generated by the induction generator.
Ｅ エレベータの全速下降段階；
流量可変ソレノイド弁７が第２図の全速下降
段階に対するプログラム区間Ｅによつて作動さ
れると、電圧Ｖが最大電圧−Veで一定に保持
されるようになり、流量可変ソレノイド弁７が
完全に開くかあるいはわずかに閉じた状態に保
持されて微速下降段階で加速されたエレベータ
は一定の速度で全速下降し、この落下エネルギ
によつて定容量型油圧ポンプ２を介して誘導発
電機として働かせるカゴ型誘導電動機１を駆動
し電力を発生させる。E Full-speed down phase of the elevator; When the variable flow solenoid valve 7 is actuated according to the program section E for the full-speed down phase of FIG. 2, the voltage V is kept constant at the maximum voltage -Ve, and the flow rate The variable solenoid valve 7 is held in a fully open or slightly closed state, and the elevator is accelerated in the slow descent stage, and then descends at full speed at a constant speed, and this falling energy is used to move the elevator through the constant displacement hydraulic pump 2. The cage type induction motor 1, which functions as an induction generator, is driven to generate electric power.
上記エレベータの全速下降速度は適宜の値に
設定しうるものであつて最大電圧−Veを適宜
に設定してなされるが、流量可変ソレノイド弁
７の抵抗を極力少なくするため、当該弁７を通
る作動油流量が油圧ポンプ２を介してタンク３
に戻される作動油流量Q1よりも多くなる範囲
Q2に設定してある。そのために、減速下降段
階D′に入る少し手前でリミツトスイツチDLs−
１を作動させて電子制御用プログラムに従つて
流量可変ソレノイド弁７を制御〔弁７で下降速
度を制御〕できる段階に移行させ、スムーズに
減速制御されるよう構成されている。 The full-speed descending speed of the elevator mentioned above can be set to an appropriate value and is achieved by appropriately setting the maximum voltage -Ve, but in order to minimize the resistance of the variable flow rate solenoid valve 7, The hydraulic oil flow is transferred to tank 3 via hydraulic pump 2.
The range in which the hydraulic oil flow rate returned to Q is greater than 1
Q is set to 2 . For this reason, the limit switch DLs-
1 is activated to move the variable flow rate solenoid valve 7 to a stage where the variable flow rate solenoid valve 7 can be controlled (the descending speed is controlled by the valve 7) according to an electronic control program, so that deceleration control is smoothly performed.
D′ エレベータの微速下降（減速下降）段階；
エレベータがX4の位置まで全速下降すると、
リミツトスイツチDLs−２が作動し、流量可変
ソレノイド弁７は第２図のプログラム区間
D′に従つて作動するようになる。D′ Elevator slow descent (deceleration descent) stage; When the elevator descends at full speed to position X 4 ,
The limit switch DLs-2 is activated, and the flow rate variable solenoid valve 7 is activated during the program period shown in Figure 2.
It comes to operate according to D′.
電圧Ｖの絶対値が最大電圧−Veから減少す
るに伴い流量可変ソレノイド弁７が閉じてジヤ
ツキ４からタンク３へ移送される作動油流量が
減少しエレベータの下降速度が減少し停止位置
X5の少し手前でリミツトスイツチDLs−３が
作動し、弁７に停止信号が与えられて弁７が閉
じて停止位置X5で停止する。尚モーター電源
はDLs−２より少し遅れてDLs−３までの間で
切られる。 As the absolute value of the voltage V decreases from the maximum voltage -Ve, the variable flow rate solenoid valve 7 closes, the flow rate of hydraulic oil transferred from the jack 4 to the tank 3 decreases, the descending speed of the elevator decreases, and the elevator reaches the stop position.
Limit switch DLs-3 is activated a little before X5 , and a stop signal is given to valve 7, which closes and stops at stop position X5 . The motor power is turned off a little later than DLs-2 and up to DLs-3.
以上本考案のエレベータはその加速下降か
ら、定速全速下降及び減速下降に至るまで第２
図の電子制御用プログラムと適宜に配設された
リミツトスイツチ群に従つて極めてスムーズに
運行され、とくに全速下降段階で下降用流量可
変ソレノイド弁を通る作動油流量をタンクに戻
される作動油流量よりも大となる範囲に設定
し、全速下降から減速下降への移行を２段のリ
ミツトスイツチにより切換えたことはシステム
構成上の大きな特徴であつて、効率の良い油圧
エレベータが提供できる。 As described above, the elevator of the present invention has a secondary
In accordance with the electronic control program shown in the figure and a group of appropriately placed limit switches, the operation is extremely smooth, and especially during the full-speed descent stage, the hydraulic oil flow rate passing through the descending variable flow rate solenoid valve is higher than the hydraulic oil flow rate returned to the tank. A major feature of the system configuration is that the transition from full-speed descent to deceleration descent is changed over by a two-stage limit switch, and a highly efficient hydraulic elevator can be provided.
又、Ｂ，Ｃ，B′及びＤ，D′各ゾーンにおけ
るエレベータの停止時、上昇時あるいはバルブ
などの不慮の故障によりエレベータが急速上昇
あるいは急速落下して作動油流量が設定値から
ずれた場合、この作動油流量の設定値からのず
れを電子式流量計測器８がフイードバツク信号
として検出し、このフイードバツク信号によつ
て作動流量を設定値に規正すべく上昇用電子制
御式流量可変ソレノイド弁６あるいは下降用電
子制御式流量可変ソレノイド弁７の開閉を自動
調整できるので、エレベータの運行が更にスム
ーズになると共に極めて優れた安全装置を備え
たものである。 Also, when the elevator stops or rises in zones B, C, B' and D, D', or when the elevator rises or falls rapidly due to an unexpected failure of a valve, etc., the hydraulic oil flow rate deviates from the set value. The electronic flow meter 8 detects this deviation from the set value of the hydraulic fluid flow rate as a feedback signal, and the electronically controlled variable flow rate solenoid valve 6 for rising is used to regulate the operating flow rate to the set value based on this feedback signal. Alternatively, since the opening and closing of the electronically controlled variable flow rate solenoid valve 7 for descending can be automatically adjusted, the operation of the elevator becomes smoother and an extremely excellent safety device is provided.
尚本考案の油圧エレベータは安全確認用の手
動開閉弁１２を備えており、定期点検時に電動
機１の電源を切つた状態で流量可変ソレノイド
弁７に下降用信号を入れ、当該安全確認用手動
開閉弁１２を開いてエレベータを急速落下させ
た際に、安全装置が適格に働くかどうかを点検
できるものである。 The hydraulic elevator of the present invention is equipped with a manual opening/closing valve 12 for safety confirmation, and during periodic inspection, a descending signal is input to the variable flow rate solenoid valve 7 with the electric motor 1 powered off, and the manual opening/closing valve for safety confirmation is applied. When the valve 12 is opened to cause the elevator to fall rapidly, it can be checked whether the safety device is working properly.
又作動油タンク３にはその液面検出用のフロ
ートスイツチ１８が備えられ、これによりタン
ク油量をチエツクする安全対策がとられてい
る。 Further, the hydraulic oil tank 3 is equipped with a float switch 18 for detecting the liquid level, thereby providing a safety measure for checking the amount of oil in the tank.
また第１図において、１３は作動油の最高圧
力を決めるリリーフ弁、１４は負圧防止用チエ
ツクバルブ、１５はフイルタ、１６は圧力計を
夫々示している。 Further, in FIG. 1, reference numeral 13 indicates a relief valve that determines the maximum pressure of the hydraulic oil, 14 a check valve for preventing negative pressure, 15 a filter, and 16 a pressure gauge.
以上本考案の油圧エレベータに係る実施例１
を説明したが、この実施例１において、上昇用
流量可変ソレノイド弁６はエレベータの上昇時
に閉じるように構成されている。 Embodiment 1 of the hydraulic elevator of the present invention
However, in the first embodiment, the ascending variable flow rate solenoid valve 6 is configured to close when the elevator ascends.
次に上昇時に開く流量可変ソレノイド弁を装
置した本考案の油圧エレベータに係る実施例２
を第３図に示す。実施例２の油圧エレベータは
実施例１の場合と同じく第２図に示す電子制御
用プログラムに従つて運行されるもので、電動
機１を始動させ定容量型油圧ポンプ２を駆動さ
せると、そのパイロツト圧力を感知して、流量
可変ソレノイド弁６′が開き、第２図の電子制
御用プログラムの区間Ｂに伴つて微速上昇（加
速上昇）し、実施例１と同様に順次全速上昇、
微速上昇（減速上昇）し、停止に至る。尚エレ
ベータの下降時も実施例１と同じなので省略す
る。 Next, Example 2 of the hydraulic elevator of the present invention equipped with a variable flow rate solenoid valve that opens when ascending.
is shown in Figure 3. The hydraulic elevator of the second embodiment is operated according to the electronic control program shown in FIG. 2, as in the case of the first embodiment. Sensing the pressure, the variable flow rate solenoid valve 6' opens, and the flow rate rises at a slight speed (accelerated rise) in accordance with section B of the electronic control program in FIG.
It rises at a very slow speed (decelerates and rises) and comes to a stop. Incidentally, the time when the elevator descends is also the same as in the first embodiment, so a description thereof will be omitted.
第１図は本考案の油圧エレベータに係る実施例
１を示す油圧回路図、第２図は本考案の油圧エレ
ベータに用いる電子制御用プログラムを示す図
表、第３図は本考案の油圧エレベータに係る実施
例２を示す油圧回路図を夫々表わしたものであ
る。
１……カゴ型誘導電動機、２……定容量型油圧
ポンプ、３……タンク、４……ジヤツキ、５……
ラム、６，６′……上昇用電子制御式流量可変ソ
レノイド弁、７……下降用電子制御式流量可変ソ
レノイド弁、８……流量計測器、９……逆止弁、
１０……吸込用フイルタ、１３……リリーフ弁、
１４……負圧防止用逆止弁、１５……フイルタ、
１６……圧力計、１７……チエツクバルブ、１８
……フロートスイツチ。
Fig. 1 is a hydraulic circuit diagram showing a first embodiment of the hydraulic elevator of the invention, Fig. 2 is a diagram showing an electronic control program used in the hydraulic elevator of the invention, and Fig. 3 is a diagram showing the hydraulic elevator of the invention. 3A and 3B are hydraulic circuit diagrams showing a second embodiment, respectively. 1...Cage-type induction motor, 2...Fixed displacement hydraulic pump, 3...Tank, 4...Jacket, 5...
Ram, 6, 6'... electronically controlled variable flow rate solenoid valve for ascending, 7... electronically controlled variable flow rate solenoid valve for descending, 8... flow meter, 9... check valve,
10... Suction filter, 13... Relief valve,
14...Negative pressure prevention check valve, 15...Filter,
16...Pressure gauge, 17...Check valve, 18
...Float switch.
Claims (1)
圧ポンプによつて作動油をタンクからジヤツキ
へ、又ジヤツキからタンクへ移送してエレベータ
を昇降せしめる油圧回路に、エレベータの停止、
微速上昇、全速上昇、微速下降および全速下降の
各段階に対応して電子制御用プログラムに従つて
作動する上昇及び下降用電子制御式流量可変ソレ
ノイド弁を装置し、該流量可変ソレノイド弁をリ
ミツトスイツチに連動せしめて作動油流量を制御
するようにした油圧エレベータにおいて、タンク
−油圧ポンプ−逆止弁−流量計測器−ジヤツキか
らなる作動油主路のポンプ、逆止弁間の側路に上
昇用流量可変ソレノイド弁を、該主路のポンプ、
流量計測器間で逆止弁を挟む他の側路に下降用流
量可変ソレノイド弁をそれぞれ配して油圧回路を
構成し、エレベータの上昇に際しては、リミツト
スイツチを前記電子制御用プログラムの全速上昇
から減速上昇に移行する位置及び減速上昇から停
止に移行する位置に配設して上昇及び停止を円滑
ならしめるとともに、下降に際しては、全速下降
時に下降用流量可変ソレノイド弁を通る作動油流
量が、油圧ポンプを介してタンクに戻される作動
油流量よりも多くなる範囲に設定しておき、全速
下降から減速下降に移行する少し手前の位置でリ
ミツトスイツチにより上記下降用流量可変ソレノ
イド弁を通る作動油流量が上記タンクに戻される
作動油流量と同じ範囲になるようにし、更に全速
下降から減速下降に移行する位置及び減速下降か
ら停止に移行する位置にそれぞれリミツトスイツ
チを配設して、下降及び停止を円滑ならしめるよ
うに、２個の流量可変ソレノイド弁と５個のリミ
ツトスイツチを組合せてシステムを構成したこと
を特徴とする油圧エレベータ。 A hydraulic circuit that uses a constant displacement hydraulic pump driven by a cage-type induction motor to move hydraulic oil from a tank to a jack and from the jack to a tank to move the elevator up and down is used to stop the elevator,
Equipped with an electronically controlled variable flow rate solenoid valve for ascending and descending that operates according to an electronic control program corresponding to each stage of slight speed ascending, full speed ascending, slow descending and full speed descending, and the variable flow rate solenoid valve is used as a limit switch. In a hydraulic elevator in which the flow rate of hydraulic oil is controlled in conjunction with each other, the hydraulic oil main passage consisting of the tank, hydraulic pump, check valve, flow meter, and jack is connected to the pump in the main hydraulic oil passage, and the rising flow rate is placed in the side passage between the check valve. The variable solenoid valve, the main path pump,
A hydraulic circuit is constructed by arranging lowering variable flow rate solenoid valves in the other side paths with a check valve between the flow rate measuring instruments, and when the elevator is going up, a limit switch is activated to reduce the speed from the full speed increase of the electronic control program. It is installed at the position where the transition is made to the ascending position and the position where the deceleration ascending to the stopping position is made to smooth the ascending and stopping. The hydraulic oil flow rate that passes through the variable flow rate solenoid valve for lowering is set to a range that is higher than the flow rate of the hydraulic oil returned to the tank via the lowering valve, and at a position slightly before the transition from full-speed descent to deceleration descent, the limit switch is set so that the flow rate of hydraulic oil passing through the variable flow rate solenoid valve for lowering is set to the above level. The flow rate of the hydraulic oil returned to the tank should be within the same range, and limit switches should be installed at the positions where the flow rate changes from full-speed descent to deceleration descent and from deceleration descent to stop to smooth the descent and stop. A hydraulic elevator characterized in that a system is constructed by combining two variable flow rate solenoid valves and five limit switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986057922U JPS6315259Y2 (en) | 1986-04-17 | 1986-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986057922U JPS6315259Y2 (en) | 1986-04-17 | 1986-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61183373U JPS61183373U (en) | 1986-11-15 |
| JPS6315259Y2 true JPS6315259Y2 (en) | 1988-04-28 |
Family
ID=30582924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986057922U Expired JPS6315259Y2 (en) | 1986-04-17 | 1986-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315259Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49116758A (en) * | 1973-03-14 | 1974-11-07 | ||
| JPS5316764U (en) * | 1976-07-24 | 1978-02-13 | ||
| JPS53115479A (en) * | 1976-12-24 | 1978-10-07 | Beringer Hydraulik Gmbh | Control device for liquid pressure |
-
1986
- 1986-04-17 JP JP1986057922U patent/JPS6315259Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49116758A (en) * | 1973-03-14 | 1974-11-07 | ||
| JPS5316764U (en) * | 1976-07-24 | 1978-02-13 | ||
| JPS53115479A (en) * | 1976-12-24 | 1978-10-07 | Beringer Hydraulik Gmbh | Control device for liquid pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61183373U (en) | 1986-11-15 |
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