CN104477730A - Elevator damping device with adaptability - Google Patents
Elevator damping device with adaptability Download PDFInfo
- Publication number
- CN104477730A CN104477730A CN201410769141.XA CN201410769141A CN104477730A CN 104477730 A CN104477730 A CN 104477730A CN 201410769141 A CN201410769141 A CN 201410769141A CN 104477730 A CN104477730 A CN 104477730A
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- CN
- China
- Prior art keywords
- damping
- elevator
- elevator car
- detecting
- piston rod
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
The invention discloses an elevator damping device with adaptability. The elevator damping device comprises a magnetorheological damping body and a control system. Parameters of magnetorheological fluid are regulated according to parameters in an abnormal falling process, if the falling speed is higher, the electrification current is increased, and the magnetorheological fluid is thickened for increasing the damping force, in addition, the damping force is gradually increased in the bottom touching process of an elevator life car body, meanwhile, the electrification current can be reduced after the speed of the elevator life car body is decelerated in the damping process, a gradually decreased damping force is formed, the damping is fast and gentle combined with the general hydraulic damping and the damping of an ordinary spring, and the damping force is adjustable, so the elevator damping device can be applicable to high-speed and low-speed elevators, the descending buffer smoothness and the sufficient variable damping force are realized, and in addition, the any-time dynamic application effects are achieved, so that the comfort and the reliability before the elevator life car body touches the bottom and at the moment of making contact with a buffer assembly can be effectively improved, and the safety performance of the elevators is improved.
Description
Technical field
The present invention relates to a kind of special safety equipment system, special type relates to safety system when a kind of cage type elevator touches the end.
Background technology
Cage type elevator is a kind of vehicle solving vertical transport, is closely connected with daily life; Existing cage type elevator, primarily of formations such as towing machine, control housing, elevator car, guide rails, realizes uplink and downlink comparatively rapidly; In order to realize uplink and downlink and install relevant device, use the place meeting type of construction elevators hoistway of cage type elevator at building or other, to realize trouble-free operation.
The uplink and downlink of cage type elevator are generally realized by mechanical force traction, structure is comparatively complicated, due to environment for use, cycle and the problem such as ageing equipment, quality, elevator elevator car all can be caused to drop without when constraint or finite constraint, there is comparatively serious safety problem.In prior art, cause serious danger in order to solve by (directly dropping to shaft bottom) at the bottom of elevator car rigid touch to occupant, shock absorber is set at shaft bottom; Be hydraulic cushion for express elevator shock absorber, slower elevators is then generally adopted to the structure of recoil spring, and so consider the mainly elasticity modulus of spring, the relation between stroke and elevator car, therefore, express elevator then can not adopt the spring that elasticity modulus is larger, otherwise have at the bottom of obvious rigid touch and feel, thus cause the accident; Importantly, above-mentioned buffer structure could not have comformability according to the whereabouts of elevator car, therefore cannot cushion according to situation about falling.
Therefore, need to improve existing elevator cushion structure, it is adjustable with dumping force comformability in buffering course during the tactile end before the improper tactile end occurs elevator car, realize the ride comfort of downstream buffer, therefore compared with prior art same device can realize at a high speed and slower elevators general, the safety performance of hoisting elevator.
Summary of the invention
In view of this, object of the present invention provides a kind of elevator to have adaptive damping arrangement, it is adjustable with dumping force comformability in buffering course during the tactile end before the improper tactile end occurs elevator car, realize the ride comfort of downstream buffer, therefore compared with prior art same device can realize at a high speed and slower elevators general, the safety performance of hoisting elevator.
Elevator of the present invention has adaptive damping arrangement, comprises magnetorheological damping body and control system;
Described control system comprises:
Magnet coil, for providing electromagnetic field for magnetorheological damping body;
Power subsystem unit, for providing power supply for magnet coil;
Descent parameters detecting unit, for detecting the descent parameters of elevator car;
Central processing unit, for receiving the data-signal of descent parameters detecting unit and sending to power subsystem unit according to this signal and provide power command.
Further, described magnetorheological damping body cylinder body, damping piston and the piston rod be fixedly connected with damping piston, be magnetic flow liquid in described cylinder body, damping piston has damping hole, described piston rod engages with bottom elevator car when elevator car falls, and forms damping by damping piston to elevator car; Described magnet coil is positioned at around cylinder body;
Further, the one-body molded formation of described piston rod part is just to the dash plate bottom elevator car;
Further, described dash plate and the one-body molded place of piston rod thicken and process, and are formed by the piston rod upwards structure that increases gradually of lateral dimension;
Further, described dash plate upper surface arranges cushion layer;
Further, described descent parameters detecting unit comprises:
Falling speed detecting sensor, for detecting elevator car falling speed parameter;
Elevator box weight parameter sensor, for detecting the real-time load weight parameter of elevator box;
Further, described descent parameters detecting unit also comprises:
Whereabouts contact detecting sensor, for detecting the pressure parameter produced magnetorheological damping body when elevator car falls and contacts with magnetorheological damping body;
Further, by dash plate to the downward forming station hierarchic structure of piston rod transition.
Beneficial effect of the present invention: elevator of the present invention has adaptive damping arrangement, adopt magnetorheological damping assembly to the structure of whereabouts elevator car damping, according to the parameter of the parameter adjustment magnetic flow liquid in improper dropping process, then magnetic flow liquid electrical current as large in falling speed strengthens retrogradation, to increase dumping force, and dumping force in end process can be touched at elevator car to increase gradually, simultaneously, electrical current can be reduced after reducing according to elevator car speed in damping process, form the dumping force diminished gradually, compare mild rapidly with general hydraulic damping with common spring, because dumping force is adjustable, high speed and slower elevators can be applicable to, realize the ride comfort of downstream buffer and there is enough variable dumping forces, and there is the effect of dynamic application at any time, before making elevator car touch the end and the traveling comfort of moment of contact Buffer Unit and reliability effectively improve, the safety performance of hoisting elevator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, as shown in the figure: the elevator of the present embodiment has adaptive damping arrangement, comprises magnetorheological damping body and control system;
Described control system comprises:
Magnet coil 11, for providing electromagnetic field for magnetorheological damping body;
Power subsystem unit 12, for providing power supply for magnet coil;
Descent parameters detecting unit, for detecting the descent parameters of elevator car 1;
Central processing unit 13, for receiving the data-signal of descent parameters detecting unit and sending to power subsystem unit according to this signal and provide power command.
Elevator box 1 can have different speed and inertia according to differing heights and load-carrying in dropping process, thus for shock absorber, needs to provide different cushion effects and dumping force; In the present invention, the height utilizing descent parameters detecting unit to detect, resistance, gravity, speed and pressure parameter etc. that shock absorber is produced, certainly, partial parameters can be effective; Adjusted the energising intensity of magnet coil 11 by central processing unit 13, to adjust magnetic-field intensity, thus reach the object of adjustment magnetic flow liquid machinery, physical property, to change dumping force; When gravity, speed and pressure parameter that shock absorber is produced bigger than normal time, in order to prevent declining and avoid at the bottom of rigid touch fast, then increase energising intensity in advance, the retrogradation of magnetic flow liquid entirety, and adjusts according to above-mentioned parameter, dumping force increase; Contact when elevator car and press down in process, along with the reduction of elevator car speed, according to the viscosity reducing degree adjustment magnetic flow liquid, also can reducing thereupon, form the dumping force that conformability is stronger; Central processing unit according to great gravity, speed and to shock absorber produce pressure parameter adopt much energising intensity then belong to existing be by experiment confirmable control method, do not repeat them here.
In the present embodiment, described magnetorheological damping body cylinder body 9, damping piston 10 and the piston rod 4 be fixedly connected with damping piston 10, be magnetic flow liquid in described cylinder body, damping piston 10 has damping hole, described piston rod 4 engages when elevator car 1 falls with bottom elevator car 1, forms damping by damping piston 10 pairs of elevator cars 1; Described magnet coil 11 is positioned at around cylinder body 9; In the present invention, the improper lower backwardness of elevator car 1, the piston rod 5 of damper assembly is depressed row, damping piston 10 is had an effect formation damping, now according to elevator box 1 drawdown parameter determination dumping force, the mode that piston rod 5 engages with elevator car 1 is generally the way of contact, and namely the descending direct contact piston bar upper end of elevator car 1, can realize the effect of descending damping; As shown in the figure, damping piston 10 has damping hole (setting size and number as required), be full of magnetic flow liquid in cylinder body, when piston moves under external force, magnetic flow liquid passes through by means of only damping hole, and viscosity determines dumping force and forms damping; Because magnetic flow liquid viscosity is adjustable, so the flow area of damping hole can be greater than general hydraulic damping equipment; As shown in the figure, cylinder body 9 is embedded among basis 8, magnet coil 11 is positioned at basis and is isolated by division board with basis 8, cylinder body 9 top is sealed by cylinder cap 7, cylinder cap 7 is sealedly attached to cylinder body 9 by the holding-down bolt 6 be embedded on basis 8, cylinder cap 7 is integrally formed the axle sleeve 5 for leading to piston rod; Adopt the structure that recoil spring combines with damper assembly, touch damper assembly in bottom buffering process at elevator car and engage the effect playing laddering buffer damping, this structure can increase the cushion stroke of Buffer Unit and reduce the elastic coefficient, the realization that can more relax whole process buffering; This structure is suitable for all cage type elevators and uses, and when elevator accident touches the end, can ensure that compression that is mild, that go forward one by one gradually cushions.
In the present embodiment, the one-body molded formation in described piston rod 4 top is just to the dash plate 2 bottom elevator car; Increase the area of contact with elevator car 1, form stable impact and buffering.
In the present embodiment, described dash plate 2 and piston rod 4 one-body molded place thicken and process, and formation is by the piston rod upwards structure that increases gradually of lateral dimension (cross-sectional area); Can progressively increase load ability according to stress condition, and form stable support.
In the present embodiment, described dash plate 2 upper surface arranges cushion layer; This cushion layer can prevent direct rigid contact, thus ensures safety and compliance.
In the present embodiment, described descent parameters detecting unit comprises:
Falling speed detecting sensor 14, for detecting elevator car falling speed parameter; Be arranged at elevator, the existing speed sensor such as Hall element can be adopted to test the speed, do not repeat them here;
Elevator box weight parameter sensor 16, for detecting the real-time load weight parameter of elevator box.Can be arranged at bottom elevator car or other load parts;
The present embodiment also comprises whereabouts contact detecting sensor 15, for detecting the pressure parameter produced magnetorheological damping body when elevator car 1 falls and contacts with magnetorheological damping body; Whereabouts contact detecting sensor 15 be arranged at elevator box improper fall time contact parts, the dash plate upper surface of such as the present embodiment; Dash plate is then that elevator car 1 falls and the magnetorheological damping body component contacted at first; The needs of buffering inertia can be obtained by above-mentioned elevator car falling speed parameter and real-time load weight parameter, the size adjusting electric current is needed according to this, and this adjustment can be carried out in elevator dropping process, real-time inertial parameter is obtained according to falling speed, overall weight, thus adjust the viscosity of magnetic flow liquid in real time, and pointed formation damping; During actual use, elevator car falls and the pressure parameter produced magnetorheological damping body when contacting with magnetorheological damping body has effect promptly and accurately, actual impulsive force can be obtained accurately, thus the inertial parameter of above-mentioned two gain of parameters is reached to the object of correction, should be as the criterion with the large person of force of inertia of pressure parameter and acquisition; Owing to having real-time detection, the increase making dumping force pointed in dropping process or adjustment, be also unlikely to change and the impulsive force with sudden change after pressure parameter correction; The inertial parameter of above-mentioned acquisition according to inertial parameter adjustment magnetic flow liquid viscosity, by simply to calculate and the program of prior art can realize, does not repeat them here.
In the present embodiment, by dash plate 2 to the downward forming station hierarchic structure 3 of piston rod 4 transition, namely realized by this ledge structure by the piston rod structure that upwards lateral dimension (cross-sectional area) increases gradually; As shown in the figure, by dash plate 2 forming station hierarchic structure downwards, form stable load basis according to the force structure of damping, thus ensure the safety in buffer damping process further.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. elevator has an adaptive damping arrangement, it is characterized in that: comprise magnetorheological damping body and control system;
Described control system comprises:
Magnet coil, for providing electromagnetic field for magnetorheological damping body;
Power subsystem unit, for providing power supply for magnet coil;
Descent parameters detecting unit, for detecting the descent parameters of elevator car;
Central processing unit, for receiving the data-signal of descent parameters detecting unit and sending to power subsystem unit according to this signal and provide power command.
2. elevator according to claim 1 has adaptive damping arrangement, it is characterized in that: described magnetorheological damping body cylinder body, damping piston and the piston rod be fixedly connected with damping piston, be magnetic flow liquid in described cylinder body, damping piston has damping hole, described piston rod engages with bottom elevator car when elevator car falls, and forms damping by damping piston to elevator car; Described magnet coil is positioned at around cylinder body.
3. elevator according to claim 2 has adaptive damping arrangement, it is characterized in that: the one-body molded formation of described piston rod part is just to the dash plate bottom elevator car.
4. elevator according to claim 3 has adaptive damping arrangement, it is characterized in that: described dash plate and the one-body molded place of piston rod thicken and process, and is formed by the piston rod upwards structure that increases gradually of lateral dimension.
5. elevator according to claim 4 has adaptive damping arrangement, it is characterized in that: described dash plate upper surface arranges cushion layer.
6. elevator according to claim 1 has adaptive damping arrangement, it is characterized in that: described descent parameters detecting unit comprises:
Falling speed detecting sensor, for detecting elevator car falling speed parameter;
Elevator box weight parameter sensor, for detecting the real-time load weight parameter of elevator box.
7. elevator according to claim 6 has adaptive damping arrangement, it is characterized in that: described descent parameters detecting unit also comprises:
Whereabouts contact detecting sensor, for detecting the pressure parameter produced magnetorheological damping body when elevator car falls and contacts with magnetorheological damping body.
8. elevator according to claim 4 has adaptive damping arrangement, it is characterized in that: by dash plate to the downward forming station hierarchic structure of piston rod transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769141.XA CN104477730A (en) | 2014-12-13 | 2014-12-13 | Elevator damping device with adaptability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769141.XA CN104477730A (en) | 2014-12-13 | 2014-12-13 | Elevator damping device with adaptability |
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| Publication Number | Publication Date |
|---|---|
| CN104477730A true CN104477730A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410769141.XA Pending CN104477730A (en) | 2014-12-13 | 2014-12-13 | Elevator damping device with adaptability |
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| CN (1) | CN104477730A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115411A (en) * | 2016-08-17 | 2016-11-16 | 河海大学 | A kind of for the operating safety guard of elevator and operation process thereof |
| CN108317158A (en) * | 2018-04-04 | 2018-07-24 | 吉林大学 | A kind of motor-driven variable length link of guide |
| WO2019210886A1 (en) * | 2019-04-10 | 2019-11-07 | 山东科技大学 | Spiral variable-volume buffer and operating method therefor |
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| CN104477729A (en) * | 2014-12-13 | 2015-04-01 | 重庆和航科技股份有限公司 | Elevator system with adaptive damping device |
| CN204528992U (en) * | 2014-12-13 | 2015-08-05 | 重庆和航科技股份有限公司 | The elevator buffer device of dumping force real-time, tunable |
| CN204528993U (en) * | 2014-12-13 | 2015-08-05 | 重庆和航科技股份有限公司 | With the elevator of the shock absorber of dumping force real-time, tunable |
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Patent Citations (11)
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| US5492312A (en) * | 1995-04-17 | 1996-02-20 | Lord Corporation | Multi-degree of freedom magnetorheological devices and system for using same |
| JP2005054847A (en) * | 2003-08-01 | 2005-03-03 | Univ Kanagawa | Viscous variable fluid shock absorber |
| CN2752541Y (en) * | 2004-12-24 | 2006-01-18 | 河北科技大学 | Magnetic flow variable liquid damper |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115411A (en) * | 2016-08-17 | 2016-11-16 | 河海大学 | A kind of for the operating safety guard of elevator and operation process thereof |
| CN106115411B (en) * | 2016-08-17 | 2018-08-10 | 河海大学 | One kind being used for the running safety guard of elevator and its operation process |
| CN108317158A (en) * | 2018-04-04 | 2018-07-24 | 吉林大学 | A kind of motor-driven variable length link of guide |
| CN108317158B (en) * | 2018-04-04 | 2023-10-10 | 吉林大学 | Motor-driven variable-length connecting rod with guide rod |
| WO2019210886A1 (en) * | 2019-04-10 | 2019-11-07 | 山东科技大学 | Spiral variable-volume buffer and operating method therefor |
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| PB01 | Publication | ||
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Application publication date: 20150401 |