CN2203693Y - Driving controller for energy-saving hydraulic elevator - Google Patents
Driving controller for energy-saving hydraulic elevator Download PDFInfo
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- CN2203693Y CN2203693Y CN 94214083 CN94214083U CN2203693Y CN 2203693 Y CN2203693 Y CN 2203693Y CN 94214083 CN94214083 CN 94214083 CN 94214083 U CN94214083 U CN 94214083U CN 2203693 Y CN2203693 Y CN 2203693Y
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Abstract
The utility model relates to a driving controller for energy-saving hydraulic elevators, which comprises an oil supply device, a variable pump-motor, a controller, a cage, and a pulse code sensor, wherein, the oil supply device is composed of an oil tank, an oil filter, an electromotor, a hydraulic pump, a safety valve, and an accumulator; one end of the variable pump-motor is communicated with the hydraulic pump and the other end of the variable pump-motor is communicated with the oil tank. According to the cage speed and the position signal of the pulse code sensor, the controller can implement the regular control of displacement amount of the variable pump-motor, thus alters the size of an output torque to realize the precise control of the cage speed and the position. The utility model can greatly reduce elevator driving power and also has the function of safety protection, which can be used for passengers, sick beds, and goods elevators in various buildings.
Description
The utility model relates to a kind of building carrying up and down, cargo-carrying hydraulic elevator driving control device of being used for.
From " hydraulic elevator " of " application of electrohydraulic proportion technology hydraulic elevator " of " hydraulic pressure and pneumatic " the 3rd interim introduction in 1992 and " vehicle for constructionization " interim introduction in 1987 the 12nd, see, present domestic making with the hydraulic lifting cylinder in the hydraulic elevator of car lifting, when rising operation, the direct motor drive fix-displacement pump that rotating speed is certain, a flow-controlling gate is by regulating to control the speed of car the flow of supplying with in the hydraulic lifting cylinder; Descend by deadweight, another flow-controlling gate is by regulating the speed with the control car to the flow of exporting from the hydraulic lifting cylinder.
Yet, adopt this mode, when rising operation, quickening and the section of running slowly especially, the flow of exporting from Hydraulic Pump of not supplying with the hydraulic lifting cylinder directly flows back to fuel tank; And when descending operation, the pressure oil that is formed by car and carrying or cargo-carrying gravity is by the hydraulic throttle valve port and oil sump tank, so the degradation of energy that causes is very big.This not only makes the driving power of this hydraulic elevator be required to be 4～5 times of traction elevator, has increased over-the-road expense, and the energy of loss is transformed into heat energy, or causes the rising of oil temperature, the service life of reducing Hydraulic Elements; Maybe cooling intallation need be set, increase spending.
The purpose of this utility model is: adopt controllable capacity pump-motor driven in hydraulic drive control device, by of the detection of pulse encoding sensor to car speed and position, controller is clocklike controlled controllable capacity pump-motor displacement size, not only realized accuracy control to car speed and position, also can realize Power Recovery to gravitional force and braking energy, reduce driving power, can overcome the existing problem of background technology.
For achieving the above object, the technical solution of the utility model is: it comprises fuel tank, oil filter, electrical motor, Hydraulic Pump, check valve, safety valve, energy storage, solenoid directional control valve, hydraulic control one-way valve, transmission device, roller, steel rope, car, pulse encoding sensor, controllable capacity pump-motor that one end is communicated with Hydraulic Pump, the other end is communicated with fuel tank and controller thereof, the mouth of controllable capacity pump-motor drives the car up-and-down movement through transmission device, roller, steel rope.Also can governor valve be arranged indirectly, a check valve in parallel in controllable capacity pump-motor high-low pressure chamber at Hydraulic Pump and controllable capacity pump-motor.
Transmission device can be a retarder, also can be that an end is communicated with Hydraulic Pump-motor that the other end is communicated with hydraulic control one-way valve, and hydraulic actuating cylinder with the high pressure chest of fuel tank or controllable capacity pump-motor.Between governor valve and controllable capacity pump-motor, or between Hydraulic Pump-motor and hydraulic actuating cylinder, be connected to solenoid directional control valve and hydraulic control one-way valve.Between the high pressure chest of fuel tank and controllable capacity pump-motor, be connected to check valve.
Controllable capacity pump-motor is the key element of this hydraulic drive control device, and it both can be used as Hydraulic Pump, also can be used as HM Hydraulic Motor.Be simplified illustration, suppose that the mechanical efficiency of controllable capacity pump-motor and Volumetric efficiency are 1.Like this, at steady state condition, the moment of torsion that inputs or outputs of controllable capacity pump-motor all can be represented by the formula:
M＝pq／2π
Wherein M is a moment of torsion, N/m; P is an inlet outlet pressure differential, Pa; Q is a discharge capacity, 1/r.Therefore,, change discharge capacity q and also just changed moment of torsion M when being constant at p.This structure is under the more constant situation of charge oil pressure, the car speed that records by the pulse encoding sensor and the feedback of position, by the control of controller realization, and then change output torque to reach accurate speed and position control to the car lifting to controllable capacity pump-motor displacement size.In the practical work process, the variation of oil reserve has caused some variations of charge oil pressure in the energy storage, the interference that this will fluctuate with the elimination charge oil pressure by compensate control of controller.
Below in conjunction with accompanying drawing,, provide working process of the present utility model and some details by description to embodiment.
Fig. 1, Fig. 2, Fig. 3 are three kinds of structural representations of the present utility model.Its feed apparatus comprises fuel tank 1, oil filter 2, electrical motor 3, Hydraulic Pump 4, check valve 5, safety valve 6, energy storage 7.When starting working, it can be controllable capacity pump or fix-displacement pump that electrical motor 3 drives Hydraulic Pump 4() rotate, export a certain amount of high pressure oil, pressure is by the pre-inflation pressure and the volume decision of energy storage 7.When energy storage 7 capacity are enough big, can make the charge oil pressure substantially constant.Check valve 5 can prevent that the pressure oil in the energy storage makes Hydraulic Pump 4 counter-rotatings when electrical motor is not worked.
The uphill process of the following car of explanation earlier.When the operator after controller sends the electric signal that car need rise, the current value that controller output is certain makes the electric-hydraulic proportion valve events of control variable pump-motor 11, pressure oil entering variable oil cylinder progressively increases its discharge capacity.So output torque progressively increases, can overcome when heavily waiting the resisting moment that produces when increasing to by car, controllable capacity pump-motor 11 begins rotation, and is operated in the motor operating mode, and it rises thereby drive car by transmission device stretching steel rope 14.When cage operation during at accelerating sections, the car speed that records by the pulse encoding sensor and the feedback of position, controller makes controllable capacity pump-motor 11 be operated in big discharge capacity scope, make output torque greater than resisting moment, thereby car is quickened, can be to the control of acceleration magnitude by the control of displacement size is realized.When cage operation in when section at the uniform velocity, by speed and position feedback, controller makes controllable capacity pump-motor 11 be operated in a certain medium discharge capacity scope, and output torque is equated substantially with resisting moment, thereby car is traveled at the uniform speed, also can be by to the control of displacement size and realize to the control of velocity magnitude.When cage operation during at braking section, by speed and position feedback, controller makes controllable capacity pump-motor 11 be operated in a certain less discharge capacity scope, makes output torque less than resisting moment, thereby car is slowed down, also can be to the control of deceleration/decel size by the control of displacement size is realized.When car arrives a certain floor and need stop the time, controller makes car speed just in time drop to zero smoothly.At this moment, still resistivity moment is little for the output torque of controllable capacity pump-motor 11, and the effect of hydraulic control one-way valve 10 stops car and can not sink.In order to make discharge capacity control more accurate, also the displacement of variable oil cylinder can be fed back to apportioning valve with the form of force feedback, or feed back to controller with the form of electricity feedback.
Besides the decline process of bright car.When the operator after controller sends the electric signal that car need descend, controller makes solenoid directional control valve 9 energisings, pressure oil passes to the hydraulic control mouth of hydraulic control one-way valve 10 and it is opened.When cage operation when quickening descending section, the car speed that records by pulse coder and the feedback of position, controller makes controllable capacity pump-motor 11 be operated in less discharge capacity scope, thereby the moment that is acted on controllable capacity pump-motor 11 by the car load-carrying by steel rope and transmission device is greater than the moment that is produced by difference of pressure, thereby it is descending that car is quickened, can be by the control of displacement size is realized to the control of acceleration magnitude.When cage operation in when section at the uniform velocity, by speed and position feedback, controller makes controllable capacity pump-motor 11 be operated in a certain medium discharge capacity scope, make the moment that produces by the car load-carrying equate substantially with the moment that produces by difference of pressure, thereby car is traveled at the uniform speed, also can be by to the control of displacement size and realize to the control of velocity magnitude.When cage operation during at braking section, by speed and position feedback, controller makes controllable capacity pump-motor 11 be operated in a certain big discharge capacity scope, the feasible moment that is produced by the car load-carrying is less than the moment that is produced by difference of pressure, thereby car is slowed down, also can be to the control of deceleration/decel size by the control of displacement size is realized.When car arrives a certain floor and need stop the time, controller makes car speed just in time drop to zero smoothly.Simultaneously, controller makes controllable capacity pump-motor 11 discharge capacities continue to reduce, and rises once more to prevent car.In the descending process of whole carriage, pump-motor 11 is operated in the pump operating mode, and is oil-filled to energy storage 7.This not only quickens descending and uniform descending section at car, makes the part gravitional force of car and load-carrying obtain reclaiming; And, make most of gravitional force of car and load-carrying and kinetic energy obtain reclaiming descending section of car deceleration.
The speed governing of hydraulic drive control device for convenience selects Hydraulic Pump 4 more better for controllable capacity pump.Safety valve 6 is not worked when flat, just under unexpected situation, just moves when system pressure surpasses safe pressure, thereby guarantees safe and reliable.Governor valve 8 also is under unexpected situation, and during as steel rope 14 fractures, the load of controllable capacity pump-motor 11 reduces suddenly, rotating speed increases too high, at this moment governor valve 8 cuts off the fuel feeding runner of controllable capacity pump-motor 11 under the differential pressure action of front and back and move, and it is stopped the rotation.When causing the car downstream rate too fast in steel rope 14 fracture, this device is also the same with other elevator, by the effect of velocity limiter to governor rope, forces safety tongs to move, with the car stop on guide rail.At car decline run duration, if the positive input of hydraulic control one-way valve 10 drops to when very low because of reasons such as pipeline breaking make pressure, the car descending speed will be too big, at this moment, controller can obtain the excessive speed signal of car that recorded by pulse coder, then it at once give a signal make electromagnetic valve 9 outages, make the logical fuel tank of hydraulic control mouth of hydraulic control one-way valve 10, thereby cut off the backward channel of hydraulic control one-way valve 10, with the car stop.
First kind of embodiment as shown in Figure 1, transmission device is a retarder 12, its input end links to each other with controllable capacity pump-motor 11, mouth is through roller 13, steel rope 14 drives car 15 up-and-down movements.The speed control and the position control method of car are same as described above.
Second kind of embodiment as shown in Figure 2, transmission device is made up of Hydraulic Pump-motor 12-1, hydraulic actuating cylinder 12-2.Hydraulic Pump-motor one end is communicated with fuel tank 1, and the other end is communicated with hydraulic actuating cylinder 12-2 through hydraulic control one-way valve 10.When car need rise, the average discharge of controllable capacity pump-motor 11 is operated in the motor operating mode greatly, it drives Hydraulic Pump-motor 12-1 rotation and makes it be operated in the pump operating mode, thereby pressure oil output enters hydraulic actuating cylinder 12-2 through hydraulic control one-way valve 10, promoting roller 13 rises, stretching steel rope 14 rises car 15.When car need descend, the average discharge of controllable capacity pump-motor 11 is less, thereby its moment of torsion is less, car 15 deadweights and load-carrying act on by steel rope 14 in the plunger of hydraulic actuating cylinder 12-2, and the pressure oil that is produced makes Hydraulic Pump-motor 12-1 contrarotation, makes it be operated in the motor operating mode, thereby also drive 11 contrarotations of controllable capacity pump-motor, make it be operated in the pump operating mode, the pressure oil of output charges into energy storage 7, and car 14 is descending.The speed control and the position control method of car are same as described above.
The third embodiment as shown in Figure 3, it and second kind of embodiment are basic identical, the wherein chamber of different is Hydraulic Pump-motor 12-1 is not a connected tank 1, but is connected on the high pressure chest of controllable capacity pump-motor 11.This mainly is the deadweight that makes Hydraulic Pump-motor 12-1 partial balancing car 15 and hydraulic actuating cylinder 12-2 plunger, the power of controllable capacity pump-motor 11 is reduced slightly, at this moment, the pressure of energy storage 7 should descend to some extent, because through the supercharging of Hydraulic Pump-motor 12-1, the pressure among the hydraulic actuating cylinder 12-2 is higher than the pressure of energy storage 7 when rising.
The utility model is compared with background technology, the beneficial effect that has is, it not only have operate steadily, comfortable, safety, loading capacity is big, the advantages such as division of room is convenient, and it is big to have overcome general hydraulic elevator energy consumption, and has the shortcoming of energy loss in the counterweight elevator commonly used because of the counterweight imbalance, and elevator drive power is reduced significantly. First kind of scheme is suitable for various buildings, rear two kinds because limited by hydraulic cylinder travel, generally be suitable for the median low structure thing.
Claims (5)
1, a kind of energy-saving hydraulic elevator drive control setup, it comprises fuel tank [1], oil filter [2], electrical motor [3], Hydraulic Pump [4], check valve [5], safety valve [6], energy storage [7], transmission device, roller [13], steel rope [14], car [15], pulse coder [16], feature of the present utility model is: comprise that also an end is communicated with Hydraulic Pump [4], controllable capacity pump-motor [11] that the other end is communicated with fuel tank [1], and controller [17], the mouth of controllable capacity pump-motor drives car [15] up-and-down movement through transmission device, roller [13], steel rope [14].
2, hydraulic drive control device according to claim 1 is characterized in that: at Hydraulic Pump ［ 4 ］ and controllable capacity pump-motor ［ 11 ］ governor valve ［ 8 ］ is arranged indirectly.
3, hydraulic drive control device according to claim 1 and 2, it is characterized in that: transmission device can be retarder ［ 12 ］, also can be that an end is communicated with the high pressure chest of fuel tank ［ 1 ］ or controllable capacity pump-motor ［ 11 ］, Hydraulic Pump-motor ［ 12-1 ］ that the other end is communicated with hydraulic control one-way valve ［ 10 ］, and hydraulic actuating cylinder ［ 12-2 ］.
4, according to claim 1 or 3 described hydraulic drive control devices, it is characterized in that: between governor valve ［ 8 ］ and controllable capacity pump-motor ［ 11 ］, or between Hydraulic Pump-motor ［ 12-1 ］ and hydraulic actuating cylinder ［ 12-2 ］, be connected to solenoid directional control valve ［ 9 ］ and hydraulic control one-way valve ［ 10 ］.
5, according to claim 1 or 4 described hydraulic drive control devices, it is characterized in that: between the high pressure chest of fuel tank ［ 1 ］ and controllable capacity pump-motor ［ 11 ］, be connected to check valve ［ 5 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214083 CN2203693Y (en) | 1994-06-14 | 1994-06-14 | Driving controller for energy-saving hydraulic elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214083 CN2203693Y (en) | 1994-06-14 | 1994-06-14 | Driving controller for energy-saving hydraulic elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2203693Y true CN2203693Y (en) | 1995-07-19 |
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ID=33830448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94214083 Expired - Fee Related CN2203693Y (en) | 1994-06-14 | 1994-06-14 | Driving controller for energy-saving hydraulic elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2203693Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298606C (en) * | 2001-11-23 | 2007-02-07 | 布奇尔液压公司 | Hydraulic lift comprising a pressure accumulator and method for controlling and regulating one such lift |
| CN103241619A (en) * | 2013-05-22 | 2013-08-14 | 太原理工大学 | Energy saving elevator and operation control method thereof |
| CN104401850A (en) * | 2014-09-18 | 2015-03-11 | 韦伯电梯有限公司 | Hydraulic elevator system with large load and high speed |
| CN105257605A (en) * | 2015-11-06 | 2016-01-20 | 杨贝贝 | Energy conversation method and energy conversation device for pressure control hydraulic systems |
| CN106335833A (en) * | 2015-07-08 | 2017-01-18 | 株式会社日成Eng | Automatic Emergency Lifting Or Lowering System For Operational Deployment Facility |
| CN107140514A (en) * | 2017-06-29 | 2017-09-08 | 广东工业大学 | A kind of energy-saving hydraulic staircase |
| CN107738970A (en) * | 2016-11-25 | 2018-02-27 | 重庆键英液压机电有限公司 | Lowering or hoisting gear based on multistage hydraulic cylinder |
| CN112855631A (en) * | 2021-02-03 | 2021-05-28 | 北京航空航天大学 | Hatch door actuating system |
-
1994
- 1994-06-14 CN CN 94214083 patent/CN2203693Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298606C (en) * | 2001-11-23 | 2007-02-07 | 布奇尔液压公司 | Hydraulic lift comprising a pressure accumulator and method for controlling and regulating one such lift |
| CN103241619A (en) * | 2013-05-22 | 2013-08-14 | 太原理工大学 | Energy saving elevator and operation control method thereof |
| CN104401850A (en) * | 2014-09-18 | 2015-03-11 | 韦伯电梯有限公司 | Hydraulic elevator system with large load and high speed |
| CN106335833A (en) * | 2015-07-08 | 2017-01-18 | 株式会社日成Eng | Automatic Emergency Lifting Or Lowering System For Operational Deployment Facility |
| CN105257605A (en) * | 2015-11-06 | 2016-01-20 | 杨贝贝 | Energy conversation method and energy conversation device for pressure control hydraulic systems |
| CN105257605B (en) * | 2015-11-06 | 2017-05-10 | 杨贝贝 | Energy conversation method and energy conversation device for pressure control hydraulic systems |
| CN107738970A (en) * | 2016-11-25 | 2018-02-27 | 重庆键英液压机电有限公司 | Lowering or hoisting gear based on multistage hydraulic cylinder |
| CN107140514A (en) * | 2017-06-29 | 2017-09-08 | 广东工业大学 | A kind of energy-saving hydraulic staircase |
| CN112855631A (en) * | 2021-02-03 | 2021-05-28 | 北京航空航天大学 | Hatch door actuating system |
| CN112855631B (en) * | 2021-02-03 | 2022-04-05 | 北京航空航天大学 | Hatch door actuating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |