CN1050106C - Device for controlling hydraulic elevator - Google Patents
Device for controlling hydraulic elevator Download PDFInfo
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- CN1050106C CN1050106C CN94109543A CN94109543A CN1050106C CN 1050106 C CN1050106 C CN 1050106C CN 94109543 A CN94109543 A CN 94109543A CN 94109543 A CN94109543 A CN 94109543A CN 1050106 C CN1050106 C CN 1050106C
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- mentioned
- switch valve
- car
- hydraulic jack
- hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/26—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration mechanical
Abstract
For a hydraulic pressure control setting, in the rising process, the first opening/closing valve 5 is closed, and the second opening/closing valve 21 is opened, and the pressurized oil discharged by a hydraulic pump 3 is sent into a hydraulic jack 1, and the car 2 is raised. In the lowering, the second opening/closing valve 21 is closed, and the first opening/closing valve 5 is opened, and the pressurized oil in the hydraulic jack 1 is discharged into an oil tank 8 by controlling the hydraulic pump 3. Since the first opening/closing valve 5 is exclusively used for lowering, the opening degree can be set small independently of the rising operation. Since the valve body 21b of the second opening/closing valve 21 has the opening degree corresponding to the flow rate of the pressurized oil, speedy closure can be realized when the flow of the pressurized oil is suspended because of the service interruption.
Description
The present invention relates to change the device that comes the modulated pressure elevator by the rotative speed that makes Hydraulic Pump.
Fig. 3 is the hydraulic circuit diagram of the apparatus for hydraulicly controlling elevator in the past put down in writing of the practical new clear 57-144971 communique of case publication number of expression Japan.
Among the figure, (1) is hydraulic jack, (2) car that is supported for hydraulic jack (1), (3) are that Hydraulic Pump, (4) that can reverse are the electrical motor that drives Hydraulic Pump (3), and (5) are for having main chamber (5a) and passing through valve body (5b) and the switch valve of the back chamber (5c) of main chamber (5a) isolation.
(6) be the 1st loop (6a) by the main chamber (5a) that connects Hydraulic Pump (3) and switch valve (5), the 1st major loop of forming with the 2nd loop (6b) of the main chamber that is connected switch valve (5) (5a) and hydraulic jack (1), (7) be to be located at the filter that is attempted by in the oil groove (8) on the Hydraulic Pump (3), (9) be the guiding loop, pressure oil by the back chamber (5c) that connects hydraulic jack (1) and switch valve (5) flows into loop (9a), discharging loop (9b) with the pressure oil of back chamber (5c) that is connected switch valve (5) and oil groove (8) forms, (10) be to insert the normally open solenoid valve of pressing oil to flow into loop (9a), (11) are to insert to press oil to discharge the normally closed solenoid valve in loop (9b).
(12) be to be located at the adjustable throttling of pressing on the oil inflow loop (9a), (13) be to be located at the adjustable throttling of pressing on the oil discharge loop (9b), (14) be the control setup of control electromagnetic valve (10) (11) and electrical motor (4), (15) be to be used for moving making valve body (5b) remain in the standard-sized sheet of switch valve (5) and the aperture adjustment flow regulating valve that the institute between the full cut-off decides aperture in the deceleration of the operation that descends, (15a) be the trimming screw of adjusting the aperture of adjustable throttling (15b) open facing outward, be to be fixed on the valve body (5b) (15c), and between adjustable throttling (15b), form the stem nut of the aperture of adjustable throttling (15b).
(16) be that the adjustable throttling (15b) that connects switch valve (5) is discharged the loop with the pressure oil of oil groove (8), (17) are to insert to press oil to discharge the normally closed solenoid valve in loop (16), and (18) are to be located to press oil to discharge the adjustable throttling in loop (16).
The control setup of hydraulic elevator in the past constitutes as described above, carries out following work.
At first, one the rising operating instruction occurs, and then control setup (14) makes electrical motor (4) running.Then, electromagnetic valve (10) is pressed oil to flow into loop (9a) and is closed by adhesive, then, electromagnetic valve (11) adhesive, it is open-minded that pressure oil is discharged loop (9b).So the pressure oil of the back chamber (5c) of switch valve (5) is disposed to oil groove (8), valve body (5b) moves switch valve (5) opening towards the figure top.
In case switch valve (5) opening, then the pressure oil of Hydraulic Pump (3) discharge flows into hydraulic jack (1) through the 1st loop (6a) → switch valve (5) → the 2nd loop (6b), so car (2) rises.Then, with the rotative speed of control setup control motor (4), according to the ascending velocity of fixed run curve control car (2).
Car (2) arrive when deciding flooring, promptly stop.And when control setup (14) sent the instruction of close switch valve (5), then electromagnetic valve (11) discharged, and occlusion pressure oil is discharged loop (9b), and electromagnetic valve (10) discharges, and it is open-minded to press oil to flow into the loop.So valve body (5b) moves towards the figure below, switch valve (5) is closed fully.
Then, when the decline operating instruction occurring, then control setup (14) allows electromagnetic valve (10) adhesive, presses oil to flow into loop (9a) and closes, and then, electromagnetic valve (11) is by adhesive, and it is open-minded to press oil to discharge loop (9b).So the pressure oil of switch valve (5) chamber, back (5c) is disposed to oil groove (8), valve body (5b) moves switch valve (5) opening towards the figure top.
In case switch valve (5) opening, then the pressure oil in the hydraulic jack (1) is forced out because of the deadweight of car, through hydraulic jack (1) → the 2nd loop (6b) → switch valve (5) → the 1st loop (6a) → Hydraulic Pump (3) → filter (7), be disposed to oil groove (8).Then, utilize control setup (14), discharge the interior pressure oil of hydraulic jack (1) by the Hydraulic Pump (3) that electrical motor (4) drives, so car (2) descends.Because the flow that dependence is discharged by pressure in the hydraulic jack (1) of the deadweight generation of car (2) and hydraulic jack (1) drives Hydraulic Pump (3), therefore, electrical motor (4) dynamic brake mode turns round.
So control setup (14) is by the rotative speed at control motor (4), by the descending speed of decide run curve control car (2).In case car (2) arrive decide flooring, car (2) promptly stops.Then, when control setup sends the instruction of off switch valve (5), then electromagnetic valve (11) discharges, and presses oil to discharge loop (9b) and closes, and electromagnetic valve (10) discharges, and it is open-minded to press oil to flow into loop (9a).So valve body (5b) moves towards the figure below, switch valve (5) is closed fully.
Above-mentioned apparatus for hydraulicly controlling elevator in the past, because of switch valve (5) is an open state rising and descend in service, in case outage in service, the electrical motor stall, then before switch valve (5) is closed fully, press oil to flow to oil groove (8) from hydraulic jack (1) by switch valve (5).Therefore, car (2) can descend.In order to suppress the descending speed of this car (2), must fix the aperture of switch valve (5) less.
Therefore, rise when mobile, the pressure loss of the pressure oil that Hydraulic Pump (3) extrudes during by switch valve (5) becomes big, must strengthen the delivery pressure of Hydraulic Pump (3), has promptly the increase electric power problem of consumption of the output that must increase electrical motor (4) thereupon.
Also have, hydraulic elevator, install and situation such as maintenance under, often to car (2) be moved between at an arbitrary position from the low speed operation that descends.At this moment, often by opening switch valve (5), regenerative brake electrical motor (4) makes the rotative speed of Hydraulic Pump (3) change the oily delivery flow of the pressure of coming in the modulated pressure jack (1).When cutting off the power supply in the case, the regenerative brake of electrical motor (4) is invalid, begins to close between early stage at switch valve (5), and car (2) quickens to descend, and closes fully because of switch valve (5) then to stop.
Car (2) elongated danger of decline miles of relative movement before stopping when therefore, having outage.
The objective of the invention is to address the above problem, even provide a kind of outage when the switch valve pressure loss descends operation during operation of reduce rising also can make the control setup of the hydraulic elevator that car stops in short range very.
The control setup of the 1st form hydraulic elevator of the present invention comprises placing between hydraulic jack and the Hydraulic Pump, opening when car descends and the 1st switch valve of closing when stopping; Opening when car rises and the 2nd switch valve of closing when stopping.
The control setup of the 2nd form hydraulic elevator of the present invention comprises the 1st switch valve of the present invention's the 1st form; Have car when rising so that the valve body that is communicated with between Hydraulic Pump and the hydraulic jack and car low speed are descended with the 2nd switch valve of the piston that moves again after above-mentioned valve body combines; Has car low speed the 3rd switch valve with the valve body that is communicated with between Hydraulic Pump one side that makes the 2nd switch valve corresponding to the aperture of pressing oily flow and the oil groove when descending.
The control setup of the 3rd form hydraulic elevator of the present invention comprises the 1st switch valve of the present invention's the 1st form; Car makes when rising and descending and is communicated with between Hydraulic Pump and the hydraulic jack and the 2nd switch valve that car is closed when stopping; The 3rd switch valve that is communicated with between car low speed makes the 2nd switch valve when descending Hydraulic Pump one side and the oil groove; When car low speed descends the back chamber of the 3rd switch valve is connected to the electromagnetic valve of oil groove.
The control setup of the 4th form hydraulic elevator of the present invention comprises the 1st switch valve of the present invention's the 1st form; The the 2nd and the 3rd switch valve of the present invention's the 3rd form; Place between Hydraulic Pump and the 2nd and the 3rd switch valve, only permitted to press oil to be circulated to the check valve of the 2nd and the 3rd switch valve from Hydraulic Pump.
The control setup of the 5th form hydraulic elevator of the present invention comprises the 1st switch valve of the present invention's the 1st form; The the 2nd and the 3rd switch valve of the present invention's the 3rd form; When car low speed descends the back chamber of the 2nd switch valve is connected to the electromagnetic valve of oil groove.
The control setup of the 6th form hydraulic elevator of the present invention comprises that car rises and when descending, and makes to be communicated with between Hydraulic Pump and the hydraulic jack and the 2nd switch valve that car is closed when stopping; The 3rd switch valve that is communicated with between car makes the 2nd switch valve when descending Hydraulic Pump one side and the oil groove.
The control setup of the 7th form hydraulic elevator of the present invention is to comprise in the present invention's the 6th form if input begins the instruction that descends, and just the back chamber of the 2nd switch valve is connected to the 2nd electromagnetic valve of oil groove; If input begins the instruction that descends, just the back chamber of the 3rd switch valve is connected to the 3rd electromagnetic valve of oil groove; Car gives when descending that the 3rd electromagnetic valve is above-mentioned to begin the instruction that descends, and in give the control setup that the 2nd electromagnetic valve descends instruction after fixing time.
The control setup of the 8th form hydraulic elevator of the present invention is to comprise in the present invention's the 6th form if input stops the instruction that descends, and just the back chamber of the 2nd switch valve is connected to the 2nd electromagnetic valve of oil groove; If input stops the instruction that descends, just the back chamber of the 3rd switch valve is connected to the 3rd electromagnetic valve of oil groove; Car gives the 2nd electromagnetic valve and stops the instruction that descends when descending, and in give the control setup that the 3rd electromagnetic valve stops to descend instruction after fixing time.
In the present invention's the 1st form, because of being arranged to make the 1st switch valve opening when car descends, make the 2nd switch valve opening during rising, so the 1st switch valve is special-purpose for descending, the pressure oil that Hydraulic Pump is discharged during rising is not by the 1st switch valve.
In the present invention's the 2nd form, constitute the 2nd switch valve with the piston that moves again after valve body combines when corresponding valve body of pressing oily flow of aperture and low speed descend during owing to rises with car, and the 3rd switch valve when descending, car low speed is communicated with between Hydraulic Pump one side that makes the 2nd switch valve corresponding to the aperture of pressing oily flow and the oil groove, therefore, even cut off the power supply in car rising and decline moving process, the 2nd and the 3rd switch valve also can answer up with flow and close.
In the present invention's the 3rd form, make the back chamber of the 3rd switch valve be connected to oil groove when car low speed descends owing to make, therefore the 3rd switch valve can be opened from hydraulic jack, through the stream of the 2nd switch valve to oil groove.
In the 4th form of the present invention, because of between Hydraulic Pump and the 2nd and the 3rd switch valve check valve being set, so the pressure oil from hydraulic jack does not flow into Hydraulic Pump when low speed descends, all-pass is crossed the 3rd switch valve and is flow to oil groove.
In the 5th form of the present invention, the back chamber of the 2nd switch valve is connected to oil groove when descending because of making car low speed, and therefore the 2nd switch valve can be opened from hydraulic jack, by the stream of the 3rd switch valve to oil groove.
In the 6th form of the present invention, because of forming stream by the 2nd and the 3rd switch valve from hydraulic jack to oil groove, so when car low speed descends car by deadweight decline.
In the 7th form of the present invention, in case begin the instruction that descends owing to make the input car, then make the 3rd electromagnetic valve action that the back chamber of the 3rd switch valve is connected to oil groove, and the back chamber of the 2nd switch valve is connected to the 2nd electromagnetic valve action of oil groove in fixing time relief, pressure oil flow when therefore, low speed descends depends on the aperture area of the 2nd switch valve.
In the 8th form of the present invention, in case stop the instruction that descends owing to make the input car, second electromagnetic valve that then allows back chamber with the second switch valve be connected to oil groove stops action, and the 3rd electromagnetic valve that the back chamber of the 3rd switch valve is connected to oil groove is stopped action in fixing time relief, pressure oil flow when therefore, low speed descends depends on the aperture area of the 2nd switch valve.
Fig. 1 is the hydraulic circuit of expression 1-the 8th form one embodiment of the present invention;
Fig. 2 is the 2nd switch valve of Fig. 1 and the action specification figure of the 3rd switch valve;
Fig. 3 represents the hydraulic circuit diagram of the control setup of hydraulic elevator in the past.
Relevant label declaration is as follows among the figure: 1: hydraulic jack, 2: car, 3: Hydraulic Pump, 4: electrical motor, 5: the 1 switch valves, 5: valve body, 6: the 1 major loops, 8: oil groove, 14: control setup, 21: the 2 switch valves, 21b: valve body, 21e piston, 21f: chamber, back, 22: the 2 major loops, 23: check valve, 27: the 2 electromagnetic valves, 29: the 3 switch valves, 29b: valve body, 29c: chamber, back, 30: the 3 major loops, 34; The 3rd electromagnetic valve.
Fig. 1 and Fig. 2, represent 1-the 8th form of the present invention-embodiment.Fig. 1 is a hydraulic circuit diagram, and Fig. 2 is the action specification figure of the 2nd and the 3rd switch valve.With installed identical part place, the same label of distance pole in the past.
Among Fig. 1, (21) be the 2nd switch valve, have main chamber (21a), valve body (21b), chamber (21c), back, stage clip (21d), piston (21e) and chamber (21f), back, piston (21e) just combines with valve body (21b) when the figure top is mobile, stage clip (21d) places between piston (21e) and the valve body (21b), makes valve body (21b), piston (21e) two sides pushing mutually.(21g) be the block of limited piston (21e) lowering position.
(22) be the 2nd major loop that connects Hydraulic Pump (3), the 2nd switch valve (21) and hydraulic jack (1) successively, form with the 2nd loop (22b) of the main chamber (5a) of the 1st switch valve (5) with the main chamber that is connected the 2nd switch valve (21) (21a) with the 1st loop (22a) of the main chamber (21a) of second switch valve (21) by connecting Hydraulic Pump (3).(23) be to insert in the 1st loop (22a), only permitted to press oil to be circulated to the check valve of the 2nd switch valve (21) from Hydraulic Pump (3).
(24) be the guiding loop that is connected to hydraulic jack, have the guiding loop (24a) that connects guiding loop (24) and the back chamber (21f) of the 2nd switch valve (21) and be connected the guiding loop (24b) that guides loop (24) and (back will illustrate) the 3rd major loop (30).(26) be the adjustable throttling of being located at guiding loop (24), (27) are the normally closed solenoid valves that inserts guiding loop (24b), and (28) are the adjustable throttlings of being located at steering circuit (24b).
(29) be the 3rd switch valve, have main chamber (29a), valve body (29b), chamber (29c), back and stage clip (29d), stage clip (29d) always pushes valve body (29b) towards closing direction.(30) be the 3rd major loop that connects Hydraulic Pump (3), the 3rd switch valve (29) and oil groove successively, form with the 2nd loop (30b) of oil groove (8) with the main chamber that is connected the 3rd switch valve (29) (29a) with the 1st loop (30a) of the 3rd switch valve (29) by the 1st loop (22a) that connects the 2nd major loop.
(31) be the guiding loop that connects the back chamber (29c) of the 1st loop (30a) and the 3rd switch valve (29), (32) be the adjustable throttling of being located in the guiding loop (31), (33) be to connect the back chamber (29c) of the 3rd switch valve (29) and the guiding loop of oil groove (8), (34) are the normally closed solenoid valves that inserts in the guiding loop (33).
Below, the action of this embodiment is described.
1. rise and move
If provide the rising operating instruction, just, control its rotative speed by control setup (14) actuating motor.So, driving Hydraulic Pump (3), the oil pressure in the 1st loop (22a) of the 2nd major loop rises.And, when the pressure in the 1st loop (22a) of the 2nd major loop overcomes the elastic force of the pressure in the 2nd loop (22b) and stage clip (21d), valve body (21b) moves, the 2nd switch valve (21) opening, press oil from the 2nd loop (22b), flow into hydraulic jack (1) by the main chamber (5a) of the 1st switch valve (5) and the 2nd loop (6b) of the 1st major loop.
So car (2) begins to rise, and do to quicken to move along with the rotating speed of electrical motor (4) increases, the aperture of valve body (21b) is along with the flow of the main chamber (21a) by the 2nd switch valve (21) becomes big.When the speed of car (2) reached command speed, then the rotating speed of electrical motor (4) became constantly, and the flow that Hydraulic Pump (3) is discharged also is constant.At this moment, electromagnetic valve (27) discharges, and guiding loop (24b) is closed.Like this, because the oil pressure of hydraulic jack (1) adds to chamber (21f), back by guiding loop (24a), piston (21e) is pushed into block (21g).
Also have, when deceleration instruction appears in the predetermined distance place after car (2) rises operation before being scheduled to stop floor, then the rotating speed of electrical motor (4) slows down, car (2) slows down mobile thereupon, the aperture of valve body (21b) is along with the flow by main chamber (21a) diminishes, when car (2) arrival was scheduled to stop the level position of floor, then electrical motor (4) shut down after valve body (21b) is closed fully.
2. operation descends
If the decline operating instruction occurs, just turn round with the rotating speed at control setup (14) control motor (4).So, driving Hydraulic Pump (3), the pressure in the 1st loop (6a) of the 1st major loop rises.This pressure, basic identical with the pressure in the 2nd loop (6b) of the 1st major loop, if being detected the device (not shown) detects, then control setup (14) makes electromagnetic valve (11) adhesive, and it is open-minded to press oil to discharge loop (9b).
So the pressure oil of the back chamber (5c) of the 1st switch valve (5) is disposed to oil groove (8), valve body (5b) moves back the 1st switch valve (5) opening.When the 1st switch valve (5) beginning opening, then the oil of the pressure in the hydraulic jack (1) is forced out with regard to the deadweight by car, is disposed to oil groove (8) through hydraulic jack (1) → the 1st switch valve (5) → Hydraulic Pump (3) → filter (7).At this moment, the Hydraulic Pump (3) that is driven by electrical motor (4) is according to the control of control setup (14), the pressure oil in the discharging hydraulic jack (1).
Because the pressure of the hydraulic jack (1) that produces by the deadweight of car (2), the traffic driven Hydraulic Pump (3) that hydraulic jack (1) is discharged are so electrical motor (4) turns round for dynamic brake.Thereby by the rotative speed with control setup (14) control motor (4), car (2) descends according to deciding running chart and moves.
If car (2) is gone up the quick travel instruction that the decline operation occurs, then control setup (14) makes electromagnetism (11) adhesive, presses oil discharge loop (9b) open-minded.Like this,, allow the aperture of adjustable throttling (13) change, allow the aperture of the 1st switch valve (5) slowly increase, then can adjust the 1st switch valve (5) from closing to the time of complete opening fully with the speed rising if when quick travel.
Deceleration in service is moved if descend, before being scheduled to stop institute's set a distance of floor, and the instruction that control setup (14) is closed the 1st switch valve (5), then electromagnetic valve (11) discharges, and presses oil to discharge loop (9b) and closes.Simultaneously, electromagnetic valve (17) adhesive.At this moment, aperture is adjusted the adjustable throttling (15b) of flow regulating valve (15) for closing fully, presses oil to discharge loop (16) and is not communicated with.
Therefore, if change the aperture of adjustable throttling (12) when mobile slowing down, the aperture that makes the 1st switch valve (5) slows down with speed and slowly reduces, and then can adjust the time that the 1st switch valve (5) is closed.The stem nut (15c) that aperture is adjusted flow regulating valve (15) is followed the aperture of the 1st switch valve (5) to reduce gradually and is followed the tracks of mobilely, and adjustable throttling (15b) opens gradually, and it is open-minded to press oil to discharge loop (16).When the aperture of adjustable throttling (15b) reach make from the pressure oil influx of pressing oil to flow into loop (9a) with from pressing oil to discharge the oily discharge rate of pressure in loop (16) when consistent, the 1st switch valve (5) stops the part aperture.
Then,, press oil to discharge loop (16) and close, become and do not discharge pressure oil, thereby from pressing oil to flow into the oily back chamber (5c) that flows into the 1st switch valve (5) of pressure in loop (9a), the 1st switch valve (5) is through closing fully after the closure gradually because of electromagnetic valve (17) discharges.
3. low speed decline operation
If low speed decline operating instruction when maintenance (installation, maintenance etc.) occurs, control setup (14) makes electromagnetic valve (34) adhesive of control the 3rd switch valve (29).So guiding loop (33) is open-minded, press oil to be disposed to oil groove (8) by the back chamber (29c) that the 3rd switch closes (29).Because of the valve body (29b) of the 3rd switch valve (29) is subjected to stage clip (29d) pushing, so only under electromagnetic valve (34) adhesive, the 3rd switch valve (29) is opening not.
As shown in Figure 2, if electromagnetic valve (34) in moment t
1By adhesive, then at the complete opening time t of the path of this electromagnetic valve (34)
1After moment t
2, allow control the 2nd switch valve (21) electromagnetic valve (27) adhesive.So loop (24a), (24b) are open-minded in guiding, press oil to drain into the 3rd major loop (30) from the back chamber (21c) of the 2nd switch valve (21).By this discharge of pressing oil, piston (21e) leaves block (21g) and moves, so piston (21e) combines with valve body (21b), and both move with being integral.
So the pressure oil of hydraulic jack (1) is discharged through the 1st loop (30a) → the 3rd switch valve (29) of the 1st loop (22b) → the 2nd switch valve (21) → the 3rd major loop of hydraulic jack (1) → the 1st switch valve (5) → the 2nd major loop.Therefore, the valve body (29b) of the 3rd switch valve (29) is pushed away by pressure, overcomes the elastic force of stage clip (29d) and moves, and the 3rd switch valve (29) opening presses oil to be disposed to oil groove (8) from the 2nd loop (30b) of the 3rd major loop.
The aperture area of the 3rd switch valve this moment (29) is corresponding to the flow that passes through.Therefore become and to adjust pick-up time by adjusting the aperture area of flow regulating valve (28).Because the 2nd switch valve (21) is opening gradually, increase by the flow that the 2nd switch valve (21) flow to the 3rd major loop (30) from hydraulic jack (1), car (2) quickens to move.
Then, if at moment t
3The low speed instruction that descends occurs stopping, then electromagnetic valve (2) discharges, and makes by the back chamber (21c) of the 2nd switch valve (21) the pressure oil to the 3rd major loop (30) to stop to discharge.Therefore, press oily self-hydraulic jack (1), flow into (21c) by guiding loop (24a), mobile thereby piston (21e) and valve body (21b) are integral, close gradually towards the path direction of blocking-up the 2nd major loop (22).Like this, self-hydraulic jack (1) just reduces by the flow that the 2nd switch valve (21) flows to the 3rd major loop (30), and car (2) slows down and moves.Become and to adjust standing time by the aperture area of adjusting flow regulating valve (26).
The aperture area of the 3rd opening valve (29) is corresponding to the flow that passes through, yet even because of car (2) in moment t
4Stop,, still have some delay time of T till close fully by the flow vanishing of hydraulic jack (1) to the 3rd major loop (30)
3Therefore, in the time before the 3rd switch valve (29) is closed fully, for example from the d/d moment T of electromagnetic valve (27)
3Rise through time T
2After, electromagnetic valve (34) is released.Because the power of stage clip (29d) is pushed valve body (29b) to normally closed direction, exist by guiding loop (33) to flow into the oil of chamber, back (29c) and the oil that flows into by guiding loop (31), close the time T that back to the 3rd switch valve (29) is closed fully fully so can shorten the 2nd switch valve (21) from oil groove (8)
3
As shown in Figure 2, in the time T of the complete opening of path of electromagnetic valve (34)
1After, by the time difference in order to electromagnetic valve (27) adhesive is set, opposite with the 2nd switch valve (21) open condition, electromagnetic valve (34) even opening be subjected to electric or mechanicalness former thereby slack-off, the acceleration operation control that still can rely on the low speed of the aperture area of the 2nd switch valve (21) to move.Suppose: the first opening of the 2nd switch valve (21), the 3rd switch valve (29) after-opening, then the acceleration of car (2) is moved and is become the opening of following the tracks of the 3rd switch valve (29), can not utilize the aperture of throttling (28) to control.
As mentioned above, electromagnetic valve (27) is released through time T
2After, by discharging electromagnetic valve (34), the acceleration operation control that can rely on the low speed of the aperture area of the 2nd switch valve (21) to move.Suppose that the 3rd switch valve (29) closes earlier, then promptly the pressure in the 1st loop (22a) of chamber (21f), back, main chamber (21a) and the 2nd major loop is identical entirely because of the 2nd switch valve (21) pressure on every side, and the 2nd switch valve (21) can not be closed, and it is constant to be parked in open state.
If from then on state begins, connect down and carry out the low speed operation that descends, then the 3rd switch valve (29) just during opening, can press oil circulation car (2) decline because of producing, so comfort degenerates.
In addition, when low speed descended operation, (1) flowed to the pressure oil of the 3rd major loop (30) by the 2nd switch valve (21), and because of check valve (23) does not flow into Hydraulic Pump (3), all-pass is crossed the 3rd switch valve (29) and flowed to oil groove (8) from hydraulic jack.Flow into Hydraulic Pump (3) if be set as, then its flow can be inconsistent because of the mechanical wear of Hydraulic Pump (3), press oil viscosity pressure etc. to change.Check valve (23) is exactly to be used for the anti-member of situation here, and its effect is the velocity variations of eliminating when low speed descends operation under the influence of Hydraulic Pump (3).
The present invention's the 1st form of above-mentioned explanation, when descending, car allows the 1st switch valve opening because of making, allow the 2nd switch valve opening during rising, so the 1st switch valve is special-purpose for descending, the pressure oil that Hydraulic Pump is discharged during rising is not by the 1st switch valve, thereby have such effect, promptly can not produce pressure loss and the standard-sized sheet aperture of dwindling the 1st switch valve of car descending speed when being used to limit outage.
The present invention's the 2nd form, constitute the 2nd switch valve with the piston that moves again after valve body combines when corresponding valve body of pressing oily flow of aperture and low speed descend during owing to rises with car, and make between the 3rd switch valve makes the 2nd switch valve with the aperture corresponding to the oily flow of pressure when car low speed descends Hydraulic Pump one side and the oil groove and be communicated with; The present invention's the 3rd form is connected to oil groove with the back chamber of the 3rd switch when car low speed descends; The present invention's the 5th form is connected to oil groove with the back chamber of the 2nd switch valve too.Thereby have such effect: even car rises and the outage in service that descends, the 2nd and the 3rd switch valve also can be closed rapidly by corresponding flow, and car is being stopped in the short range very much.
The present invention's the 4th form, owing between Hydraulic Pump and the 2nd and the 3rd switch valve, check valve is set, so the pressure oil from hydraulic jack when low speed descends does not flow into Hydraulic Pump, all-pass is crossed the 3rd switch valve and is flow to oil groove, have the mechanical wear that is not subjected to Hydraulic Pump inconsistent, press oil viscosity pressure etc. to influence, can prevent the effect of velocity variations when low speed descends.
The present invention's the 6th form forms stream from hydraulic jack to oil groove because of making by the 2nd and the 3rd switch valve, thus car low speed when descending by deadweight decline, even thereby have outage, car is speedup not also, can stop in very short dropping distance, guarantees safe effect.
The present invention's the 7th form, in case begin the instruction that descends owing to make the input car, just allow back chamber with the 3rd switch valve be connected to the 3rd electromagnetic valve action of oil groove, the chamber is connected to the 2nd electromagnetic valve action of oil groove after fixing time relief is with the 2nd switch valve, therefore has such effect: even the action of the 3rd electromagnetic valve is delayed, pressure oil flow when low speed descends also depends on the aperture area of the 2nd switch valve, the acceleration operation in the time of controlling low speed decline accurately.
The present invention's the 8th form, in case stop the instruction that descends owing to make the input car, the 2nd electromagnetic valve that then allows back chamber with the 2nd switch valve be connected to oil groove stops action, and the 3rd electromagnetic valve that the back chamber of the 3rd switch valve is connected to oil groove is stopped action in fixing time relief, therefore has such effect: even the action of the 2nd electromagnetic valve is delayed, pressure oil flow when low speed descends also depends on the aperture area of the 2nd switch valve, running slowly in the time of controlling low speed decline accurately.
Claims (8)
1. the control setup of a hydraulic elevator, with electric motor driven oil pump with the Pressure oil feeder hydraulic jack, by controlling the rotating speed of above-mentioned electrical motor, change the delivery flow of Hydraulic Pump, car is risen, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, control the rotating speed of above-mentioned electrical motor, change the delivery flow of above-mentioned pressure oil, above-mentioned car is descended, it is characterized in that comprising: place between above-mentioned hydraulic jack and the Hydraulic Pump opening when above-mentioned car descends and the 1st switch valve of closing when stopping; Opening when above-mentioned car rises and the 2nd switch valve of closing when stopping.
2. the control setup of a hydraulic elevator, with electric motor driven oil pump with the Pressure oil feeder hydraulic jack, by controlling the rotating speed of above-mentioned electrical motor, change the delivery flow of Hydraulic Pump, car is risen, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, control the rotating speed of above-mentioned electrical motor, change the delivery flow of above-mentioned pressure oil, above-mentioned car is descended, it is characterized in that comprising: place between above-mentioned hydraulic jack and the Hydraulic Pump opening when above-mentioned car descends and the 1st switch valve of closing when stopping; Have above-mentioned car and combine the 2nd switch valve of the piston that moves again when with aperture the valve body that is communicated with between above-mentioned Hydraulic Pump and the hydraulic jack and above-mentioned car low speed being descended when rising with above-mentioned valve body corresponding to above-mentioned pressure oil flow; Has above-mentioned car low speed the 3rd switch valve with the valve body that is communicated with between above-mentioned Hydraulic Pump one side that makes above-mentioned the 2nd switch valve corresponding to the aperture of pressing oily flow and the oil groove when descending.
3. the control setup of a hydraulic elevator, with electric motor driven oil pump with the Pressure oil feeder hydraulic jack, by controlling the rotating speed of above-mentioned electrical motor, change the delivery flow of Hydraulic Pump, car is risen, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, control the rotating speed of above-mentioned electrical motor, change the delivery flow of above-mentioned pressure oil, above-mentioned car is descended, it is characterized in that comprising: place between above-mentioned hydraulic jack and the Hydraulic Pump, opening when above-mentioned car descends and when rising and when stopping the 1st switch valve of closing; Make when above-mentioned car rises and when descending between above-mentioned Hydraulic Pump and the hydraulic jack and be communicated with the 2nd switch valve of closing when above-mentioned car stops; Has above-mentioned car low speed the 3rd switch valve with the valve body that is communicated with between above-mentioned Hydraulic Pump one side that makes above-mentioned the 2nd switch valve corresponding to the aperture of pressing oily flow and the oil groove when descending; When above-mentioned car low speed descends the back chamber of above-mentioned the 3rd switch valve is connected to the electromagnetic valve of above-mentioned oil groove.
4. the control setup of a hydraulic elevator, with electric motor driven oil pump with the Pressure oil feeder hydraulic jack, by controlling the rotating speed of above-mentioned electrical motor, change the delivery flow of Hydraulic Pump, car is risen, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, control the rotating speed of above-mentioned electrical motor, change the delivery flow of above-mentioned pressure oil, above-mentioned car is descended, it is characterized in that comprising: place between above-mentioned hydraulic jack and the Hydraulic Pump, opening when above-mentioned car descends and when rising and when stopping the 1st switch valve of closing; Make when above-mentioned car rises and when descending between above-mentioned Hydraulic Pump and the hydraulic jack and be communicated with the 2nd switch valve of closing when above-mentioned car stops; The 3rd switch valve that is communicated with between above-mentioned car low speed makes above-mentioned the 2nd switch valve when descending above-mentioned Hydraulic Pump one side and the oil groove; Place between above-mentioned Hydraulic Pump and the above-mentioned the 2nd and the 3rd switch valve, only permitted above-mentioned pressure oil and be circulated to the above-mentioned the 2nd and the check valve of the 3rd switch valve from above-mentioned Hydraulic Pump.
5. the control setup of a hydraulic elevator, with electric motor driven oil pump with the Pressure oil feeder hydraulic jack, by controlling the rotating speed of above-mentioned electrical motor, change the delivery flow of Hydraulic Pump, car is risen, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, control the rotating speed of above-mentioned electrical motor, change the delivery flow of above-mentioned pressure oil, above-mentioned car is descended, it is characterized in that comprising: place between above-mentioned hydraulic jack and the Hydraulic Pump, opening when above-mentioned car descends and when rising and when stopping the 1st switch valve of closing; Above-mentioned car makes when rising between above-mentioned Hydraulic Pump and the hydraulic jack and is communicated with the 2nd switch valve of closing when above-mentioned car stops; The 3rd switch valve that is communicated with between above-mentioned car low speed makes above-mentioned the 2nd switch valve when descending above-mentioned Hydraulic Pump one side and the oil groove; When above-mentioned car low speed descends the back chamber of above-mentioned the 2nd switch valve is connected to the electromagnetic valve of above-mentioned oil groove.
6. the control setup of a hydraulic elevator, by with the Pressure oil feeder hydraulic jack, the car that this hydraulic jack is supported rises, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, above-mentioned car is descended, it is characterized in that comprising: make when above-mentioned car rises and when descending to be communicated with between above-mentioned Hydraulic Pump and the hydraulic jack and the 2nd switch valve that above-mentioned car is closed when stopping; The 3rd switch valve that is communicated with between above-mentioned car makes above-mentioned the 2nd switch valve when descending above-mentioned Hydraulic Pump one side and the oil groove.
7. the control setup of a hydraulic elevator, by with the Pressure oil feeder hydraulic jack, the car that this hydraulic jack is supported rises, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, above-mentioned car is descended, it is characterized in that comprising: when above-mentioned car rises and low speed make the 2nd switch valve that is communicated with between above-mentioned Hydraulic Pump and the hydraulic jack when descending; In case input begins the instruction that descends, just the back chamber of above-mentioned the 2nd switch valve is connected to the 2nd electromagnetic valve of above-mentioned oil groove; The 3rd switch valve that is communicated with between Hydraulic Pump one side that makes above-mentioned the 2nd switch valve and the above-mentioned oil groove; In case import the above-mentioned instruction that descends that begins, just the back chamber of above-mentioned the 3rd switch valve be connected to the 3rd electromagnetic valve of above-mentioned oil groove; Above-mentioned car gives when descending that above-mentioned the 3rd electromagnetic valve is above-mentioned to begin the instruction that descends, and give the control setup of the above-mentioned decline instruction of the 2nd electromagnetic valve after fixing time.
8. the control setup device of a hydraulic elevator, by with the Pressure oil feeder hydraulic jack, the car that this hydraulic jack is supported rises, by the pressure oil in the above-mentioned hydraulic jack is disposed to oil groove, above-mentioned car is descended, it is characterized in that comprising: make when above-mentioned car rises and when descending to be communicated with between above-mentioned Hydraulic Pump and the hydraulic jack and the 2nd switch valve that above-mentioned car is closed when stopping; In case input stops the instruction that descends, just the back chamber of above-mentioned the 2nd switch valve is connected to the 2nd electromagnetic valve of above-mentioned oil groove; The 3rd switch valve that is communicated with between Hydraulic Pump one side that makes above-mentioned the 2nd switch valve and the above-mentioned oil groove; In case import the above-mentioned instruction that descends that stops, just the back chamber of above-mentioned the 3rd switch valve being connected to the 3rd electromagnetic valve of above-mentioned oil groove; Above-mentioned car gives when descending that above-mentioned the 2nd electromagnetic valve is above-mentioned to stop the instruction that descends, and give the control setup of the above-mentioned instruction that stops to descend of the 3rd electromagnetic valve after fixing time.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20393893A JP3175418B2 (en) | 1993-08-18 | 1993-08-18 | Hydraulic elevator controller |
| JP203938/93 | 1993-08-18 | ||
| JP203938/1993 | 1993-08-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1123245A CN1123245A (en) | 1996-05-29 |
| CN1050106C true CN1050106C (en) | 2000-03-08 |
Family
ID=16482173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94109543A Expired - Fee Related CN1050106C (en) | 1993-08-18 | 1994-08-12 | Device for controlling hydraulic elevator |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3175418B2 (en) |
| KR (1) | KR0146621B1 (en) |
| CN (1) | CN1050106C (en) |
| TW (1) | TW290523B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102065095B1 (en) | 2018-04-13 | 2020-01-10 | 심석래 | Impact energy reduction anchor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148248A (en) * | 1975-03-11 | 1979-04-10 | Maxton Manufacturing Company | Hydraulic valve control system |
| EP0196445A2 (en) * | 1985-04-01 | 1986-10-08 | Albert Böcker GmbH & Co. KG | Control device for actuating the hydraulic winding hoist of an inclined lift |
| US4676140A (en) * | 1984-09-15 | 1987-06-30 | Beringer-Hydraulik Gmbh | Hydraulic control system |
| EP0236732A2 (en) * | 1986-03-14 | 1987-09-16 | Albert Böcker GmbH & Co. KG | Control device for the operation of a hydraulic winch of an inclined lift |
| CN1054949A (en) * | 1990-03-16 | 1991-10-02 | 株式会社日立制作所 | Hydraulic elevator |
| CN1060826A (en) * | 1990-10-16 | 1992-05-06 | 三菱电机株式会社 | Apparatus for hydraulicly controlling elevator |
| US5212951A (en) * | 1991-05-16 | 1993-05-25 | Otis Elevator Company | Hydraulic elevator control valve |
-
1993
- 1993-08-18 JP JP20393893A patent/JP3175418B2/en not_active Expired - Fee Related
-
1994
- 1994-06-08 TW TW083105200A patent/TW290523B/en active
- 1994-07-20 KR KR1019940017542A patent/KR0146621B1/en not_active IP Right Cessation
- 1994-08-12 CN CN94109543A patent/CN1050106C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148248A (en) * | 1975-03-11 | 1979-04-10 | Maxton Manufacturing Company | Hydraulic valve control system |
| US4676140A (en) * | 1984-09-15 | 1987-06-30 | Beringer-Hydraulik Gmbh | Hydraulic control system |
| EP0196445A2 (en) * | 1985-04-01 | 1986-10-08 | Albert Böcker GmbH & Co. KG | Control device for actuating the hydraulic winding hoist of an inclined lift |
| EP0236732A2 (en) * | 1986-03-14 | 1987-09-16 | Albert Böcker GmbH & Co. KG | Control device for the operation of a hydraulic winch of an inclined lift |
| CN1054949A (en) * | 1990-03-16 | 1991-10-02 | 株式会社日立制作所 | Hydraulic elevator |
| CN1060826A (en) * | 1990-10-16 | 1992-05-06 | 三菱电机株式会社 | Apparatus for hydraulicly controlling elevator |
| US5212951A (en) * | 1991-05-16 | 1993-05-25 | Otis Elevator Company | Hydraulic elevator control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| TW290523B (en) | 1996-11-11 |
| KR0146621B1 (en) | 1998-08-17 |
| CN1123245A (en) | 1996-05-29 |
| JPH0753161A (en) | 1995-02-28 |
| KR950005730A (en) | 1995-03-20 |
| JP3175418B2 (en) | 2001-06-11 |
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