CN103569813A - Automatic balancing energy-saving device for elevator car adopting assistant counterweight on counterweight side and counterweight and control system - Google Patents
Automatic balancing energy-saving device for elevator car adopting assistant counterweight on counterweight side and counterweight and control system Download PDFInfo
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- CN103569813A CN103569813A CN201210280507.8A CN201210280507A CN103569813A CN 103569813 A CN103569813 A CN 103569813A CN 201210280507 A CN201210280507 A CN 201210280507A CN 103569813 A CN103569813 A CN 103569813A
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Abstract
The invention belongs to the technical field of energy saving for elevators and specifically relates to an automatic balancing energy-saving device for an elevator car adopting assistant counterweight and a counterweight. The energy-saving device comprises a counterweight-side weight sensor, an elevator car-side weight sensor, a dragging brake and crown block combiner, a dragging cable crown block, a dragging and fixing pair counterweight cable, a counterweight frame, a counterweight block, an assistant counterweight frame, an assistant counterweight block, a dragging hand and a guide rail. When the elevator ascends or descends in response to a calling signal and the load in the elevator car is in dynamic change, the energy-saving device enables the counterweight to automatically load or unload the assistant counterweight according to the information about the weight difference on the elevator car side and the counterweight side sensed by an elevator weight sensor, so as to achieve the balance of the forces on the two sides of a dragging wheel. The balance-point load weight is generally set as 50% of rated loading capacity. When the energy-saving device is used, the elevator is driven and the energy is consumed only when the load of the elevator car exceeds the balance point. If the load of the elevator car is under the balance point, the running of the elevator only needs to overcome the ultra-low energy consumption of a friction force of the cable, so that the energy-saving effect is very obvious.
Description
Technical field
The invention belongs to elevator energy-saving technical field, be specifically related to a kind of vertical lift energy saving in running device.
Background technology
The energy consumption of vertical lift (hereinafter to be referred as " elevator ") mainly consists of four aspects: traction system, electric control system, cage illumination and ventilation system, door mechanism system, wherein the energy consumption of tractive driving has accounted for the overwhelming majority wherein (being generally 70% to 80%).
The type of drive of vertical lift has multiple, existing most popular be tractive driving.
The load-carrying capacity of elevator is by fully loaded Demand Design.But in service up and down, full-load run is not the normality of elevator operation, the even unloaded real normality for elevator operation of underloading.Therefore the rated load function of elevator design is often by emptying.The design of this large amount of redundancy has caused the waste of elevator traction driving-energy.
Summary of the invention
The object of the present invention is to provide a kind of energy saver that can reduce elevator operation energy consumption.
The perfect condition that elevator traction drives is counterweight frame 6 and pouring weight 7 (hereinafter to be referred as " counterweight ") side is kept in balance and equated with the weight of car one side, do not considering under the prerequisite that traction steel-cable deadweight changes, towing machine only need overcome traction friction drag and just can easily move, and now tractive driving energy consumption is minimum.
Based on this thinking, the present invention increases by a covering device in the overall structure of elevator, make elevator its weight to heavy side and cage side when different loads moves up and down make dynamic balance play, allow the traction motor most of the time in only need be to overcome the utmost point low energy consumption work of friction force of steel rope, thereby realize the object of elevator energy-saving.
The principle of work of apparatus of the present invention and elevator structure, by Figure of description, are shown in shown in Fig. 5～Fig. 6.
The elevator energy saving in running device of the present invention's design, comprise: counterweight check weighing quantity sensor 5, car check weighing quantity sensor 3, traction braking and fixed pulley combiner (normally closed) 8, haulage cable fixed pulley 14, traction and fixed joint counterweight steel rope 9, secondary counterweight frame 10 and secondary to pouring weight 11 (hereinafter to be referred as " secondary counterweight "), secondary counterweight carriage 12, a pair of traction hand 13, secondary counterweight long guideway 16, secondary counterweight short lead rail 15; Wherein, counterweight check weighing quantity sensor 5 is arranged on the counterweight of elevator, for measuring the weight of counterweight; Car check weighing quantity sensor 3 is arranged on the car of elevator, for measuring the weight of car;
Secondary to being reused in the car 4 of balance traction sheave 1 both sides and the weight difference of counterweight.As shown in Figure 5, a set of energy saver is only established a secondary counterweight, by long guideway 16 and the short lead rail 15 of secondary counterweight carriage, moves up and down respectively.The installation of secondary counterweight carriage and moving position are in the space up and down of the centre of counterweight and well enclosure.Specifically, long guideway 16 is fixed on well enclosure, and short lead rail 15 is fixed on secondary counterweight frame, and long guideway 16 length are corresponding to well enclosure length, and short lead rail 15 length are corresponding to secondary counterweight frame 10 length; Between long guideway 16 and short lead rail 15, by channel suspending rail sliding block joint, make secondary counterweight frame 10 along channel suspending rail up-and-down movement; Secondary counterweight frame 10 is provided with secondary counterweight position transduser, for detection of the location point of secondary counterweight frame.
Traction braking and fixed pulley combiner 8 (normally closed) are arranged on the well enclosure top that counterweight is faced, and haulage cable fixed pulley 14 is arranged on the well enclosure bottom that counterweight is faced; Corresponding to a secondary counterweight, there are left and right 2 same traction brakings and fixed pulley combiner 8 and 2 same haulage cable fixed pulleys 14, be divided into the both sides of a secondary counterweight; Wherein, each traction braking and fixed pulley combiner 8 are provided with 1 fixed pulley, and each haulage cable fixed pulley 14 is also provided with 1 fixed pulley; Traction and fixed joint counterweight steel rope 9 also have 2, respectively around the fixed pulley of left and right two traction brakings and fixed pulley combiner 8, and the fixed pulley of left and right two the haulage cable fixed pulleys 14 in lower end, the two ends of every steel cable are connected with bottom with the top of secondary counterweight frame 10 arranged on left and right sides respectively, the closed loop moving mechanism that forms one group of secondary counterweight, for secondary counterweight frame 10 in the location in space and fixing; Configure the action that a pair of traction hand 13 is used for holding with a firm grip and connects or unclamp, rely on the secondary counterweight frame 10 of traction up and down of counterweight to move up and down.Specifically as shown in Figure 5.
Secondary counterweight is participated in counterweight and car load gravitational equilibrium, and it moves self up and down without power.It is affiliated on counterweight by traction hand 13, or unloads from counterweight, and specifically, traction hand 13 is arranged on counterweight frame, and traction hand 13 connects traction and fixed joint counterweight steel rope 9, realizes being affiliated to of secondary counterweight and counterweight; Traction hand 13 unclamps traction and fixed joint counterweight steel rope 9, realizes the unloading of secondary counterweight and counterweight; The connection of traction hand 13 and the action of unclamping submit to car and the instruction of counterweight dynamical equilibrium that energy saver is accepted; Wherein, two traction hands 13 are responsible for controlling the haulage cable of a side separately, guarantee the equidirectional motion of secondary counterweight and car.
In the present invention, energy saver is also provided with control system, for controlling the action of each parts of energy saver.
The present invention installs a set of additional counterweight (secondary counterweight) for the car of feature and the dynamic auto balance energy-saving apparatus of counterweight (being called for short " energy saver ") in the space up and down of the centre of Elevator weight sensor side and well enclosure, and the installation region of secondary counterweight is independent.When elevator is being replied calling signal upstream or downstream and car internal burden while being dynamic change, the cage side that energy saver records according to elevator weight sensor and the information result to heavy side both sides weight difference, on counterweight, automatic hanging leans on or unloads secondary counterweight, to reach traction sheave both sides equilibrium of forces; The load carrying ability of equilibrium point is generally made as 50% of nominal payload.The corresponding elevator drive energy consumption of variation of car load and potential energy thereof is different, Fig. 1, Fig. 2 have described respectively elevator intuitively at the driving efficiency change curve that this energy saver front and back are installed, from curve, equilibrium point is positioned on the point of crossing of car uplink and downlink, installing after this energy saver only when car load surpasses equilibrium point, just demand motive power consumption of elevator, and below equilibrium point, elevator operation only need overcome the utmost point low energy consumption of friction force of steel rope, and energy-saving effect is fairly obvious.
Elevator energy efficiency diagram of curves ordinate represents that I (A), abscissa represent weight W (Kg), Fig. 1 has described alternating-current motor stator electric current, the curve of loads that energy saver is not installed, and Fig. 2 has described alternating-current motor stator electric current, the curve of loads that energy saver is installed.
An important feature of this energy saver is: it moves self up and down without power to participate in counterweight and car load gravitational equilibrium " secondary counterweight ".It is affiliated to or is discharged on counterweight by traction hand, and the motive force or the gravity of self that rely on traction to give produce counterbalance effect up and down.This energy saver is a primary and secondary relation with the overall structure of existing elevator, is a relation of adding and can be separated at any time.
Accompanying drawing explanation
Fig. 1 elevator energy efficiency diagram of curves (alternating-current motor stator electric current, the curve of loads of energy saver are not installed).
Fig. 2 elevator energy efficiency diagram of curves (alternating-current motor stator electric current, the curve of loads of energy saver are installed).
The elevator device of Fig. 3 self-equalizing energy saver of the present invention forms schematic diagram.
Fig. 4 self-equalizing energy saver of the present invention workflow diagram.
Fig. 5 energy saver mechanical schematic diagram of the present invention.
The secondary counterweight of Fig. 6 elevator move up and down mechanical schematic diagram C to.
Number in the figure: 1 traction sheave, 2 traction steel-cables, 3 cage side weight sensors, 4 cars, 5 counterweights stress quantity sensor, 6 counterweight frames, 7 pairs of pouring weights, 8 traction brakings and fixed pulley combiner (normally closed), 9 traction and fixed joint counterweight steel ropes, 10 secondary counterweight frames, 11 pairs are to pouring weight, 12 secondary counterweight carriages, 13 traction hands, 14 haulage cable fixed pulleys, 15 short lead rail, 16 long guideways.
The specific embodiment
1, apparatus of the present invention major part function introduction
Secondary counterweight is used for the weight difference of balance traction sheave 1 both sides car 4 and counterweight.As can be seen from Figure 5, a set of energy saver has a secondary counterweight, and installation and moving position are in to the space up and down of the centre of heavy side and well enclosure.
Being affiliated to or unloading of elevator secondary counterweight in service drawn the action that hand 13 connects, unclamps traction and fixed joint counterweight steel rope 9 and realized in energy saver, and the action of traction hand submits to car and the instruction of counterweight dynamical equilibrium that energy saver is accepted.
To focusing on bottom, unloaded car is when top layer needs down, and now the weight difference of traction sheave both sides is maximum, and power consumption is maximum, the position that secondary counterweight participates in by top layer down for positive dirction is used.
To focusing on top layer, unloaded car is when bottom needs up, and now the weight difference of traction sheave both sides is also maximum, and power consumption is also minimum, and the position that secondary counterweight participates in is from lower to upper for negative direction is used.
Parts traction braking and fixed pulley combiner 8 and traction and fixed joint counterweight steel rope 9 and secondary counterweight, haulage cable fixed pulley 14, form the closed loop moving mechanism of one group of secondary counterweight.
Fixed pulley in traction braking and fixed pulley combiner 8 keeps static (normally closed) by the braking of traction braking device, between traction and fixed joint counterweight steel rope 9 and fixed pulley (8,14), do not have relative sliding, traction and fixed joint counterweight steel rope 9 are born secondary to focusing on the gravitational equilibrium of locus.
Traction braking and fixed pulley combiner 8 and haulage cable fixed pulley 14 play two effects.Traction and fixed joint counterweight steel rope 9 are used for the fixing of secondary counterweight and location, and haulage cable 9 is drawn by traction hand 13, counterweight up and down time by drawing the hoisting force that hand transmits, drive the upper and lower motion of secondary counterweight.
The upper and lower motion of secondary counterweight realizes by drawing hand 13 haulage cables 9, and secondary counterweight slides up and down the planar location of X, Y-direction and realized by long guideway 16, short lead rail 15.
Shown in Fig. 4, be lift car and the counterweight self-equalizing energy saver workflow diagram that adopts secondary counterweight.
2, the configuration of secondary counterweight
Counterweight frame and the weight to pouring weight, met the design needs of elevator rated load, and its weight is not changed.During elevator operation, energy saver is just to heavy side being affiliated to the action of secondary counterweight and the secondary counterweight of unloading, to reach the energy-conservation object of traction sheave both sides weight balancing.
3, energy saver operation logic describes in detail
Common vertical lift mechanical schematic diagram as shown in Figure 5, in the both sides of traction sheave 1, is hanging respectively counterweight (6,7) and car 4 by traction steel-cable 2, and under the rotation of traction sheave, elevator is made upper and lower perpendicular movement.
Energy saver of the present invention is installed on the well enclosure of Elevator weight sensor side.Install after energy saver, according to zero load, semi-load and fully loaded three kinds of extremities, carry out operating analysis.Energy saver is also provided with control system, controls the action of each parts of energy saver.
The control system of energy saver, and the tracing analysis of motor stator electric current and load is as follows:
Uplink:
A, elevator no-load and car are in base station, and to focusing on top layer, cage side weight is lighter than counterweight side.Elevator is as accepted upwards instruction, secondary to focusing on bottom, control system is controlled 2 traction hands 13 and secondary to reconnecting on counterweight frame, then the brake equipment of the traction braking of open auxiliary counterweight and fixed pulley combiner 8, lift car upwards, secondary counterweight is affiliated to counterweight and is also made upward movement, and secondary counterweight gravity is superimposed to heavy side, makes traction sheave two stress force balance.Ascending for elevator, actual measurement load current just and on efficiency diagram of curves equilibrium point electric current basically identical.
B, elevator semi-load and car are in base station, and to focusing on top layer, cage side weight just equals heavy side.Do not need pair recast to be affiliated to action, traction sheave both sides gravitational equilibrium.Ascending for elevator, actual measurement load current is just consistent with equilibrium point electric current on efficiency diagram of curves.
Fully loaded and the car of C, elevator is in base station, and to focusing on top layer, cage side weight is greater than heavy side.During cage operation, secondary counterweight is not affiliated to action, and one is affiliated to and has alleviated the counterweight amount of stressing, and equilibrium factor is just not right.Elevator up moves power consumption and does not subtract.
Downlink:
A, elevator no-load car are at top layer, and to focusing on base station, cage side weight is lighter than counterweight side.Secondary to focusing on top layer, on control system control counterweight frame, 2 traction hands 13 are connected with fixed joint counterweight steel rope 9 with traction, then the traction braking of open auxiliary counterweight and fixed pulley combiner 8, elevator down moves, secondary counterweight is down operation also, secondary counterweight gravity is superimposed to heavy side, makes traction sheave two stress force balance.Down, actual measurement load current is just consistent with equilibrium point electric current on efficiency diagram of curves for elevator.
B, elevator car semi-load are at top layer, and to focusing on bottom, cage side weight just equals heavy side.Traction sheave both sides gravity is balance just in time, and energy saver is failure to actuate.Down, actual measurement load current is just consistent with equilibrium point electric current on efficiency diagram of curves for elevator.
C, the fully loaded car of elevator are at top layer, and to focusing on bottom, cage side weight is greater than the favourable reduction elevator drive power consumption of heavy side.Elevator down, be failure to actuate by energy saver.Elevator down, is made load current and is measured with to be reflected as current value on efficiency diagram of curves consistent, lower than equilibrium point.
In said process, the size of car weight, counterweight weight is recorded by each self-corresponding weight sensor, the position of secondary counterweight is recorded by secondary counterweight position transduser, and calculate its weight difference by control system, meanwhile, control system judgement car position, sends secondary counterweight and is affiliated to or unloading command, and control the switch enforcement concrete operations of drawing hand, control the brake switch of traction braking and fixed pulley combiner simultaneously.
When elevator is up or down in way while stopping stop, weight sensor finds that car internal load changes, and the control system of this energy saver determines the secondary action that recast forward or negative sense are affiliated to or are unloaded (path from base station to top layer or top layer to base station) immediately.
Claims (1)
1. lift car and a counterweight self-equalizing energy saver that adopts secondary counterweight, it is characterized in that comprising: counterweight check weighing quantity sensor (5), car check weighing quantity sensor (3), traction braking and fixed pulley combiner (8), haulage cable fixed pulley (14), traction and fixed joint counterweight steel rope (9), secondary counterweight frame (10), secondary to a pair of traction hand of pouring weight (11) (13), long guideway (16), short lead rail (15); Wherein, counterweight check weighing quantity sensor (5) is arranged on the counterweight of elevator, for measuring the weight of counterweight; Car check weighing quantity sensor (3) is arranged on the car of elevator, for measuring the weight of car;
Described secondary counterweight (10,11) is for the car (4) of balance traction sheave (1) both sides and the weight difference of counterweight (6,7); A set of energy saver is provided with a secondary counterweight (10,11), and by long guideway (16) and short lead rail (15), the installation of secondary counterweight carriage and moving position are in the space up and down of the centre of counterweight and well enclosure respectively; Wherein, long guideway (16) is fixed on well enclosure, it is upper that short lead rail (15) is fixed on secondary counterweight frame (10), and long guideway (16) length is corresponding to well enclosure length, and short lead rail (15) length is corresponding to secondary counterweight frame (10) length; Between long guideway (16) and short lead rail (15), by channel suspending rail sliding block joint, make secondary counterweight frame (10) along channel suspending rail up-and-down movement; Secondary counterweight frame (10) is provided with secondary counterweight position transduser, for measuring the location status of secondary counterweight;
Described traction braking and fixed pulley combiner (8) comprise two parts of drg of fixed pulley and this fixed pulley, traction braking and fixed pulley combiner (8) are arranged on the well enclosure top that counterweight (6,7) is faced, and haulage cable fixed pulley (14) is arranged on the well enclosure bottom that counterweight (6,7) is faced; Corresponding to a secondary counterweight, there are left and right 2 same traction brakings and fixed pulley combiner (8) and 2 same haulage cable fixed pulleys (14), be divided into the both sides of a secondary counterweight; Wherein, each traction braking and fixed pulley combiner (8) are provided with 1 fixed pulley, and each haulage cable fixed pulley (8) is also established 1 fixed pulley; Traction and fixed joint counterweight steel rope (9) also have 2, respectively around the fixed pulley of left and right two traction brakings and fixed pulley combiner (8), and the fixed pulley of left and right two haulage cable fixed pulleys (14), two ends are connected with bottom with the top of secondary counterweight frame (10) arranged on left and right sides respectively, the closed loop moving mechanism that forms one group of secondary counterweight, for the locus of location and fixed joint counterweight frame (10); The action that coordinates a pair of traction hand (13) to connect or unclamp, draws secondary counterweight frame (10) and moves up and down;
Secondary counterweight frame (10) is also provided with secondary counterweight position transduser, for detection of the locus point of secondary counterweight frame (10);
Secondary counterweight participates in counterweight and car load gravitational equilibrium, by drawing hand (13) on counterweight frame, secondary counterweight is affiliated on counterweight frame, or from counterweight frame, unloads specific implementation;
Wherein, traction hand (13) is arranged on counterweight frame, traction hand (13) connects traction and fixed joint counterweight steel rope (9), realize secondary counterweight toward being affiliated on counterweight frame, traction hand (13) unclamps traction and fixed joint counterweight steel rope (9), realizes secondary counterweight toward the unloading on counterweight frame; The connection of traction hand (13) and the action of unclamping submit to car and the instruction of counterweight dynamical equilibrium that energy saver is accepted; Wherein, each is responsible for controlling the haulage cable of a side two traction hands, guarantees the equidirectional motion of secondary counterweight and car, and secondary counterweight is positive dirction use from top to bottom; Secondary counterweight is that negative direction is used from bottom to top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210280507.8A CN103569813A (en) | 2012-08-08 | 2012-08-08 | Automatic balancing energy-saving device for elevator car adopting assistant counterweight on counterweight side and counterweight and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210280507.8A CN103569813A (en) | 2012-08-08 | 2012-08-08 | Automatic balancing energy-saving device for elevator car adopting assistant counterweight on counterweight side and counterweight and control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035717A (en) * | 2015-06-23 | 2015-11-11 | 合肥鑫晟光电科技有限公司 | System for loading and unloading cassette and method for loading and unloading cassette |
| CN107150941A (en) * | 2017-07-13 | 2017-09-12 | 苏州莱茵电梯股份有限公司 | The elevator of counterweight coefficient of balance can be changed |
| CN112249847A (en) * | 2020-07-15 | 2021-01-22 | 德普家用电梯（上海）有限公司 | Weight balance system of home elevator |
| CN114394507A (en) * | 2022-01-19 | 2022-04-26 | 深圳市嘉伯科技有限公司 | Magnetic suspension elevator |
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2012
- 2012-08-08 CN CN201210280507.8A patent/CN103569813A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035717A (en) * | 2015-06-23 | 2015-11-11 | 合肥鑫晟光电科技有限公司 | System for loading and unloading cassette and method for loading and unloading cassette |
| US9919878B2 (en) | 2015-06-23 | 2018-03-20 | Boe Technology Group Co., Ltd. | System for loading and unloading cassette and method for loading and unloading cassette |
| CN105035717B (en) * | 2015-06-23 | 2019-09-06 | 合肥鑫晟光电科技有限公司 | Load and unload the system of cassette and the method for handling cassette |
| CN107150941A (en) * | 2017-07-13 | 2017-09-12 | 苏州莱茵电梯股份有限公司 | The elevator of counterweight coefficient of balance can be changed |
| CN112249847A (en) * | 2020-07-15 | 2021-01-22 | 德普家用电梯（上海）有限公司 | Weight balance system of home elevator |
| CN114394507A (en) * | 2022-01-19 | 2022-04-26 | 深圳市嘉伯科技有限公司 | Magnetic suspension elevator |
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Application publication date: 20140212 |