CN202296654U - Emergency evacuation device of elevator - Google Patents
Emergency evacuation device of elevator Download PDFInfo
- Publication number
- CN202296654U CN202296654U CN2011203677237U CN201120367723U CN202296654U CN 202296654 U CN202296654 U CN 202296654U CN 2011203677237 U CN2011203677237 U CN 2011203677237U CN 201120367723 U CN201120367723 U CN 201120367723U CN 202296654 U CN202296654 U CN 202296654U
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Abstract
The utility model relates to an emergency evacuation device of an elevator, which is applied on lifting elevators. The emergency evacuation device comprises a motor (11), a rectifier (31), an inverter (32) connected with the rectifier (31), a pulse width modulation circuit (34) for transmitting a control signal to the inverter (32), a central processor (371) and a data memory (372), the emergency evacuation device is characterized by further comprising a current detecting circuit (33) used for detecting the operation direction of the motor (11) and feeding back the operation direction to the central processor (371), the input end thereof is connected with the current output end of the inverter (32), and the output end thereof is connected with the input end of the central processor (371); and a voltage detecting circuit (40) used for detecting the voltage of the inverter (32), and the output end thereof is connected with the central processor (371). Compared with the prior art, the emergency evacuation device of the utility model has the advantages of improving the operation efficiency and safety, further reducing the load of a spare power supply and reducing the cost of an elevator system.
Description
Technical field
The utility model relates to a kind of elevator emergency detrainment device, belongs to elevator control field.
Background technology
If emergency condition takes place during the elevator operation; Need carry out emergency evacuation operation, back-up source place in operation at this moment is for elevator normally reaches the flat bed state under emergency rating; Need carry out the judgement of emergency evacuation service direction, be exactly in fact the judgement of elevator load direction.If can correctly judge the load direction of elevator, then system makes the motor that drags the elevator operation along the elevator load direction operation, evacuates thereby reach the flat bed state.If the direction error in judgement will cause the back-up source emergency protection, influence the recovery of the normal condition of elevator.This shows that in elevator emergency evacuation process, it is extremely important that elevator emergency is evacuated the direction judgement of elevator load direction just, it is the prerequisite that can elevator safe operation reach the flat bed state.
Existing emergency evacuation service direction determination methods has two kinds: one freely slips the mode of car by elevator and obtains elevator emergency and evacuate direction for adopt decontroling band-type brake, concrete it is thus clear that be called the patent of invention institute elaboration method of " self-adaptive control method of elevator emergency operation " No. 201010107593.3; But the method is from decontroling band-type brake to learning that the emergent direction of operation will be through 2 ~ 3 seconds time, and in this time, the elevator variable frequency device is the operation of motor not to be controlled, and can occur situations such as motor stall like this, causes potential safety hazard.Two install the switch of weighing for elevator, and this switch of weighing is judged the direction of elevator load through the weight of measuring car and counterweight, and apparatus for controlling elevator learns that this direction rear drive elevator moves towards respective direction, carries out emergency evacuation.But; The use switch of weighing is judged the direction of elevator load; Increase the cost that the switch of weighing has increased elevator device on the one hand, there is the risk that lost efficacy in the switch of weighing on the other hand, and will cause the emergency evacuation anisotropy if the switch of weighing loses efficacy; Start the back-up source protection, elevator can't carry out emergency evacuation.
The utility model content
Have problems for solving in the prior art; The utility model provides a kind of new elevator emergency detrainment device, and its main principle is to utilize the size of DC bus-bar voltage and current of electric to judge the size and the direction of Motor torque, thereby judges the elevator load direction; And this direction information is stored in the memory device so that elevator calls when emergency rating occurring; Drive motor moves towards load direction, makes machine operation at brake running state, effectively carries out elevator emergency and evacuates.The technical scheme of the utility model is following:
A kind of elevator emergency detrainment device; Comprise motor 11 and rectifier 31 and the inverter 32 that links to each other with rectifier 31; And central process unit 371 and data memory 372; Wherein also comprise: a speed displacement reactive circuit 22, the service direction through detecting said motor 11 also feeds back to said central process unit 371; One current detection circuit 33, the input end of current detection circuit 33 links to each other with the current output terminal of inverter 32, and the mouth of current detection circuit 33 links to each other with the input end of central process unit 371; One is used to detect the voltage detecting circuit 40 of inverter 32 voltages, and the mouth of voltage detecting circuit 40 is connected to central process unit 371.
Further, speed displacement reactive circuit 22 comprises sensor 12 and A/D converter 21.
Further, also comprise cond 38, voltage detecting circuit 40 is connected the two poles of the earth of cond 38 to detect the DC bus-bar voltage of 38 liang of interpolars of cond.
This utility model can improve the efficient of operation and improve safety with respect to background technology one (adopt to decontrol band-type brake and freely slip the mode of car by elevator and obtain elevator emergency evacuation direction, see 201010107593 elaboration methods).With respect to background technology two, reduce the cost of elevator device, further improved safety, also reduced the load of back-up source simultaneously.
Description of drawings
Fig. 1 is the utility model electrical block diagram.
Shown in the figure: 11: motor; 12: sensor; The 21:A/D conv; 22: the speed displacement reactive circuit; 23: motor control unit; 31: rectifier; 32: inverter; 33: current detection circuit; 34: pulse-width modulation circuit; 37: central processing unit; 38: cond; 371: central process unit; 372: data memory.
The specific embodiment
The applicant describes the specific embodiment of the utility model in detail according to Figure of description.The following stated specific embodiment is a preferred implementation, can not think the restriction to other embodiments of the utility model technical scheme.
According to shown in Figure 1, the utility model comprises following major part:
Speed displacement reactive circuit 22 is used to judge the elevator service direction and the running condition of elevator is monitored.Speed displacement reactive circuit 22 comprises sensor 12 and A/D converter 21; Wherein, Sensor 12 detects speed, the displacement signal of motor 11 and sends A/D converter 21 to; Convert digital signal to through A/D converter 21 and send central process unit 371 to, when specifically realizing, sensor 12 can be sine and cosine encoder, the rotary encoder of analog quantity.
Motor control unit 23; Comprise rectifier 31, inverter 32, voltage detecting circuit 40, pulse-width modulation circuit 34, cond 38; After being used to receive the motor drive signal of central process unit 371 generations, carry out control, make motor according to speed and the direction operation set to motor 11.Wherein, rectifier 31: be responsible for alternating current is transformed into galvanic module; Inverter 32: the alternating current that direct current (DC) is transformed into frequency and voltage variable; Pulse-width modulation circuit 34 is responsible for receiving the motor drive signal that central process unit 371 produces, and amplifies and isolation processing 11 operations of operation inverter 32 drive motor.Voltage detecting circuit 40 be responsible for to detect the size of the DC bus-bar voltage at cond 38 two ends, and sends this voltage signal to central process unit 371.
Current detection circuit 33: be used to detect the size of current of three plase alternating current U that inverter 32 mouths flow out and flow through motor 11, V, W, thereby judge the size of motor 11 moments of torsion.
According to circuit structure shown in Figure 1; Present technique scheme mode of operation is described below: the enforcement of present technique scheme focuses on the judgement to the elevator load direction; The just size of the moment of torsion of motor 11 and direction; Wherein there is following step very crucial: at first, to utilize speed displacement reactive circuit 22 to detect the service direction of motor, the just service direction of elevator; Secondly; Utilize current detection circuit 33 to detect inverter 32 output end currents size; And information passed to central process unit 371; The size of electric current and the corresponding relation of moment of torsion are: the size of Motor torque=(outgoing current ÷ main frame rated current) * main frame nominal torque, and central process unit 371 can calculate the size of Motor torque in view of the above according to the size of electric current; They are three years old; Utilize voltage detecting circuit 40 to detect the DC bus-bar voltage at cond 38 two ends; Central process unit 371 is according to the direction of size judgement motor 11 moments of torsion of voltage detecting circuit 40 detected magnitudes of voltage, and physical relationship shows then that for if d-c bus voltage value is higher than setting value 560V machine operation is in braking mode; The direction of Motor torque is opposite with the service direction of motor; If d-c bus voltage value is less than or equal to setting value 560V, then machine operation is at motoring condition, and the Motor torque direction is identical with the service direction of motor.Thus, system just can calculate the size and the direction of the moment of torsion of motor 11, the just load direction of elevator.
In specific words, when elevator was worked at every turn, rectifier 31 was responsible for three plase alternating current R, S, T are transformed into direct current (DC), supplied inverter 32 to use; Direct current (DC) after 38 pairs of conversion of cond carries out Filtering Processing; Voltage detecting circuit 40 detects cond 38 two ends DC bus-bar voltages in real time; And this information of voltage passed to central process unit 371; Central process unit 371 judges that magnitude of voltage is whether in range of receiving, as in scope, not stopping total system work.If in normal range, permit next step action.
Current detection circuit 33 detects the size of current that inverter 32 inputs to motor 11, and information is passed to central process unit 371, thereby central process unit 371 is judged the size of Motor torque according to the current information of U, V, W.As previously mentioned, judge the direction of motor 11 moments of torsion according to voltage detecting circuit 40.Central process unit 371 is confirmed the elevator load direction after judging size and the direction of Motor torque, just the elevator emergency direction of evacuating.This load information be stored in data memory 372 thereafter.When having a power failure, system utilizes the back-up source power supply, and central process unit 371 directly calls the load direction information that is stored in the data memory 372, obtains correct elevator emergency and evacuates direction, in time carries out the emergency evacuation of elevator.
To sum up; The applicant has set forth a kind of elevator emergency detrainment device of the utility model in detail; The applicant has done detailed elaboration to the preferred embodiment of the utility model; But can not be interpreted as restriction, everyly on the utility model basis, further improve and similar or identical scheme, all be regarded as the scope that the utility model is asked for protection other embodiments of the utility model.
Claims (3)
1. elevator emergency detrainment device; Comprise motor (11) and rectifier (31) and the inverter (32) that links to each other with rectifier (31); And central process unit (371) and data memory (372); It is characterized in that also comprising: a speed displacement reactive circuit (22), the service direction through detecting said motor (11) also feeds back to said central process unit (371); One current detection circuit (33), the input end of said current detection circuit (33) links to each other with the current output terminal of said inverter (32), and the mouth of said current detection circuit (33) links to each other with the input end of said central process unit (371); One is used to detect the voltage detecting circuit (40) of inverter (32) voltage, and the mouth of said voltage detecting circuit (40) is connected to central process unit (371).
2. elevator emergency detrainment device according to claim 1 is characterized in that: said speed displacement reactive circuit (22) comprises sensor (12) and A/D converter (21).
3. elevator emergency detrainment device according to claim 1 is characterized in that: also comprise cond (38), said voltage detecting circuit (40) is connected the two poles of the earth of said cond (38) to detect the DC bus-bar voltage of cond (38) two interpolars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203677237U CN202296654U (en) | 2011-10-01 | 2011-10-01 | Emergency evacuation device of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203677237U CN202296654U (en) | 2011-10-01 | 2011-10-01 | Emergency evacuation device of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202296654U true CN202296654U (en) | 2012-07-04 |
Family
ID=46365594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203677237U Withdrawn - After Issue CN202296654U (en) | 2011-10-01 | 2011-10-01 | Emergency evacuation device of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202296654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351121A (en) * | 2011-10-01 | 2012-02-15 | 西子联合控股有限公司 | Elevator emergency evacuation device and an elevator emergency evacuation method |
-
2011
- 2011-10-01 CN CN2011203677237U patent/CN202296654U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351121A (en) * | 2011-10-01 | 2012-02-15 | 西子联合控股有限公司 | Elevator emergency evacuation device and an elevator emergency evacuation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20130925 |
|
| RGAV | Abandon patent right to avoid regrant |