CN112420449B - Elevator locking system and elevator - Google Patents
Elevator locking system and elevator Download PDFInfo
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- CN112420449B CN112420449B CN202011339864.8A CN202011339864A CN112420449B CN 112420449 B CN112420449 B CN 112420449B CN 202011339864 A CN202011339864 A CN 202011339864A CN 112420449 B CN112420449 B CN 112420449B
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- 230000005611 electricity Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
Abstract
The embodiment of the invention provides an elevator locking system and an elevator, wherein the elevator locking system comprises a locking control loop, and the locking control loop comprises a first loop and a second loop; the first loop is conducted in a non-locking ladder state and is disconnected after receiving a signal for starting locking the ladder; the second loop is conducted after receiving a signal for starting the locking ladder, and is disconnected after receiving a signal for finishing the locking ladder; the power supply control loop comprises a first power supply, a first electric contact and an elevator control cabinet; the elevator locking control loop controls the closing or opening of the first electric contact, if the first loop and/or the second loop are/is conducted, the first electric contact is closed, and the power supply control loop is conducted, so that the first power supply supplies power to the elevator control cabinet; if the first loop and the second loop are disconnected, the first electrical contact is disconnected, and the power supply control loop is disconnected, so that the first power supply stops supplying power to the elevator control cabinet. According to the embodiment of the invention, the elevator control cabinet can be in the power-off state in the elevator locking state, so that the energy is saved.
Description
Technical Field
The embodiment of the invention relates to the field of elevators, in particular to an elevator locking system and an elevator.
Background
With the rapid development of the building market in China and the increase of the intelligent building demand, the use amount of the elevator is rapidly increased. The elevator mainly comprises a traction machine (winch), a guide rail, a counterweight device, a safety device (such as a speed limiter, a safety clamp, a buffer and the like), a signal control system, a car, a hoistway door and the like. These parts are installed in the hoistway and the machine room of the building, respectively. The elevator car is usually driven by friction transmission of a steel wire rope, the steel wire rope bypasses a traction sheave, two ends of the steel wire rope are respectively connected with a car and a counterweight, and a motor drives the traction sheave to enable the car to lift.
The elevator locking function refers to a mode in which the elevator exits from a normal service state and passengers cannot use the elevator. If sudden power failure or power supply line failure occurs in the operation of the elevator, the elevator can automatically lock the elevator. Because the elevator is provided with an electric and mechanical safety device, once the elevator fails, the brake of the elevator automatically brakes, so that the elevator cannot run.
But the current elevator has higher power consumption in the elevator locking state.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is to provide an elevator locking system and an elevator, and the problem that the power consumption of the elevator is high in a locking state is solved.
In order to solve the above problems, an embodiment of the present invention provides an elevator locking system, including: the locking ladder control loop comprises a first loop and a second loop which are connected in parallel; the first loop is conducted in a non-locking ladder state and is disconnected after receiving a signal for starting locking the ladder; the second loop is conducted after receiving a signal for starting the locking ladder, and is disconnected after receiving a signal for finishing the locking ladder; the power supply control loop comprises a first power supply, a first electric contact and an elevator control cabinet; the elevator locking control loop controls the closing or opening of the first electric contact, if the first loop and/or the second loop are/is conducted, the first electric contact is closed, and the power supply control loop is conducted so that the first power supply supplies power to the elevator control cabinet; if the first loop and the second loop are disconnected, the first electrical contact is disconnected, and the power control loop is disconnected, so that the first power supply stops supplying power to the elevator control cabinet.
The first loop includes: the second power supply, the second switch and the first coil are connected in sequence; the second circuit includes: the second power supply, the third switch and the first coil; the first coil controls the closing or opening of the first electric contact, and the first coil and the first electric contact form a first switch; in the non-locking ladder state, the second switch is closed; after receiving a signal for starting locking the ladder, the second switch is opened, and the third switch is closed; and after receiving the signal of locking the ladder, the third switch and the second switch are disconnected.
The second switch includes: a second electrical contact and a second coil that controls the closing or opening of the second electrical contact; further comprises: and a third power supply that supplies power to the second coil.
The third switch includes: a third electrical contact and a third coil that controls the closing or opening of the third electrical contact; further comprises: and a fourth power supply that supplies power to the third coil.
The first electrical contact is a normally open electrical contact.
The second electrical contact is a normally closed electrical contact.
The third electrical contact is a normally closed electrical contact.
The first power supply is a strong current.
The second power supply is weak current.
The embodiment of the invention also provides an elevator, which comprises: an elevator lock system as hereinbefore described.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
the elevator locking system comprises a locking control loop and a power control loop, wherein the power control loop comprises a first power supply, a first electric contact and an elevator control cabinet. The elevator locking control loop controls the closing or opening of the first electric contact, so that the elevator control cabinet can obtain electricity in a non-elevator locking state or after receiving an elevator locking starting signal; the elevator control cabinet can lose electricity after receiving the signal of locking the elevator, so that the elevator is not consumed in the elevator locking state, and the aim of saving energy is fulfilled.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a functional block diagram of an elevator lock control system provided by a first embodiment of the present invention.
Detailed Description
As known from the background art, the elevator in the prior art has higher power consumption in the elevator locking state.
The main reasons found by analysis include: when the current elevator enters a locking state, the elevator control cabinet is still electrified, but the system cannot serve, and the elevator is still in a power consumption state.
In order to solve the problems, the embodiment of the invention provides an elevator locking system and an elevator. The elevator locking system comprises a locking control loop and a power control loop, wherein the power control loop comprises a first power supply, a first electric contact and an elevator control cabinet. The elevator locking control loop controls the closing or opening of the first electric contact, so that the elevator control cabinet can obtain electricity in a non-elevator locking state or after receiving an elevator locking starting signal; the elevator control cabinet can lose electricity after receiving the signal of locking the elevator, so that the elevator is not consumed in the elevator locking state, and the aim of saving energy is fulfilled.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
A first embodiment of the invention provides an elevator locking system. Fig. 1 is a schematic view of an elevator locking system provided in this embodiment, and referring to fig. 1, the elevator locking system includes: the locking ladder control loop 100, wherein the locking ladder control loop 100 comprises a first loop and a second loop which are connected in parallel; the first loop is conducted in a non-locking ladder state and is disconnected after receiving a signal for starting locking the ladder; the second loop is conducted after receiving a signal for starting the locking ladder, and is disconnected after receiving a signal for finishing the locking ladder; a power control loop 110, the power control loop 110 comprising a first power source 111, a first electrical contact 112 and an elevator control cabinet 113; the locking ladder control loop 100 controls the closing or opening of the first electrical contact 112, if the first loop and/or the second loop are/is turned on, the first electrical contact 112 is closed, the power supply control loop 110 is turned on, so that the first power supply 111 supplies power to the elevator control cabinet 113; if the first and second circuits are opened, the first electrical contact 112 is opened and the power control circuit 110 is opened to stop the power supply from the first power source 111 to the elevator control cabinet 113.
The following will make a detailed description with reference to the accompanying drawings.
The elevator control cabinet 113 is an electric control device in which various electronic devices and electric components are installed in a cabinet-shaped structure having a safety protection function, and may also be called an elevator central control cabinet. The elevator control cabinet 113 is a device for controlling the operation of an elevator, and in general, the elevator control cabinet 113 may have the following general functions: the centralized selection control is a highly automatic control function for centralized comprehensive analysis processing of various signals such as instructions in a car and calls outside a hall; and stopping the elevator, namely stopping the elevator at a specified floor by using a stopping switch at night, on weekends or on holidays. When the elevator is stopped, the elevator door is closed, and the illumination and the fan are powered off, so that electricity saving and safety improvement are facilitated; full load control, when the car is full loaded, the hall call is not responded; and detecting faults, recording the faults in a microcomputer memory, and stopping the elevator when the faults exceed a certain number.
Since the elevator control cabinet 113 has a large number of functions, the first power source 111 for supporting its normal operation is a strong current. The strong electricity is characterized by large power, large current, large power, low frequency and the voltage of the strong electricity is generally above 24V. The treatment object of strong electricity is energy (electric power), and the main problems are to reduce loss and improve efficiency. The strong electricity is transmitted by a transmission line.
The opening or closing of the first electrical contact 112 determines the opening or closing of the power control loop 110 and determines the power up or power down of the elevator control cabinet 113. After receiving the signal of locking the elevator, namely, in the elevator locking state, the first electric contact 112 is disconnected, so that the elevator control cabinet 113 is powered off, and the aim of saving energy is fulfilled.
The first electrical contact 112 is also controlled by the first coil 104. The first coil 104 controls the closing or opening of the first electrical contact 112, and the first coil 104 and the first electrical contact 112 constitute a first switch 130.
The first switch 130 is a relay, which is an electric control device that causes a predetermined step change in the controlled amount in the electric output circuit when the change in the input amount reaches a prescribed requirement. Relays are commonly used in automated control circuits, which are actually an automatic switch that uses a small current to control the operation of a large current. In general, a relay is composed of a coil and an electrical contact, and when a current of a certain value or more is passed through the coil, an electromagnetic attractive force is generated, and the electrical contact can be driven to operate by using the electromagnetic attractive force. I.e. the opening and closing of the electrical contacts can be controlled by means of the voltage and current (input signal) applied to the coil.
The first switch 130 plays a role of an automatic adjusting, safety protecting and converting circuit for the power control loop 110.
The first electrical contact 112 is a normally open electrical contact that is open when not energized, i.e., the normally open electrical contact is open at the original normal state, and once energized, the state of the normally open electrical contact is reversed and becomes closed. Thus, when the lock ladder control circuit 100 is conductive, the first electrical contact 112 is closed in the energized operational state.
In other embodiments, the first electrical contact may also be provided as a normally closed electrical contact. When the elevator locking control loop is opened, the first electric contact is in a closed state, and the elevator control cabinet is electrified; when the locking ladder control loop is conducted, the first electric contact is in an off state, and the elevator control cabinet is powered off.
The locking ladder control loop 100 is used for controlling the on or off of the power supply control loop 110, so that the elevator control cabinet 113 can be powered on in a non-locking ladder state or after receiving a signal for starting locking the ladder, thereby ensuring the normal operation of the elevator; so that the elevator control cabinet 113 can lose electricity after receiving the signal of locking the elevator, thereby achieving the purpose of saving energy.
Specifically, the lock ladder control loop 100 includes a first loop and a second loop. The first loop and the second loop are matched with each other, so that the elevator power supply can be rapidly switched in the three states of non-locking elevator, locking elevator starting and locking elevator finishing.
The first loop includes: the second power supply 101, the second switch 140 and the first coil 104 are sequentially connected; the second switch 140 includes: a second electrical contact 102 and a second coil 105, the second coil 105 controlling the closing or opening of the second electrical contact 102; the first loop further includes: a third power supply 106, the third power supply 106 supplying power to the second coil 105.
The second loop includes: the second power supply 101, the third switch 150 and the first coil 104 are connected in sequence. The third switch 150 includes: a third electrical contact 103 and a third coil 107, the third coil 107 controlling the closing or opening of the third electrical contact 103; the second circuit further includes: a fourth power supply 108, the fourth power supply 108 supplying power to the third coil 107.
The second power supply 101, the third power supply 106 and the fourth power supply 108 are weak currents, and are characterized by low voltage, small current, small power and high frequency, and the processing objects of the weak currents are mainly information, namely information transmission and control, the voltage is generally within 36V, and the transmission of the weak currents is wired and wireless. The second power supply 101, the third power supply 106, and the fourth power supply 108 are weak currents, mainly because the above-mentioned power supplies are used to change the state of the first circuit or the second circuit, i.e., to transmit the status signal of the elevator to the power control loop 110, and are not used to maintain the operation of the various components of the elevator. Therefore, the second power supply 101 is weak current, which can save energy and improve the safety of the circuit and the accuracy of information transmission.
A second electrical contact 102 and a third electrical contact 103 for making or breaking an electrical circuit. The state of the lock ladder control loop 100 may be changed by changing the state of the second electrical contact 102 or the third electrical contact 103 when a different signal is received.
In the present embodiment, the second electrical contact 102 and the third electrical contact 103 are normally closed electrical contacts. It will be appreciated that if the second electrical contact 102 presents a wiring problem, the second electrical contact 102 changes from an original closed state to an open state, and the change in state affects the change in electrical circuit when not energized, thereby making the failure of the second electrical contact 102 easier to detect. Similarly, if the third electrical contact 103 has a line problem, the third electrical contact 103 changes from an original closed state to an open state, and under the condition of no power, the change of state will affect the change of the circuit, so that the fault of the third electrical contact 103 is easier to be detected. Therefore, the use of the normally closed electrical contacts for the second electrical contact 102 and the third electrical contact 103 can improve the safety and stability of the entire circuit.
In other embodiments, the second and third electrical contacts may also be normally open electrical contacts.
The elevator mainly comprises three states: firstly, a non-locking ladder state; secondly, a state after receiving a signal for locking the ladder; thirdly, receiving the signal of locking the ladder. The circuit conditions in three states will be described in detail below:
during normal operation of the elevator, i.e. in an unlocked elevator state, the second switch 140 is closed, the first loop is turned on, specifically, the third power supply 106 is turned off, and the second coil 105 is powered off, so that the second electrical contact 102 maintains the original closed state; thus, the second power source 101 supplies power to the first coil 104 through the second electrical contact 102; at this time, the first coil 104 brings the first electrical contact 112 into a closed state, and the power supply control circuit 110 is turned on.
In this embodiment, when the elevator is in the non-locking state, the third switch 150 is also closed, the second circuit is also turned on, specifically, the fourth power supply 108 is turned off, and the third coil 107 is powered off, so that the third electrical contact 103 also maintains the original closed state; thus, the second power supply 101 may also supply power to the first coil 104 through the third electrical contact 103; at this time, the first coil 104 brings the first electrical contact 112 into a closed state, and the power supply control circuit 110 is turned on.
After receiving the signal of starting the locking ladder, the second switch 140 is opened, the first loop is opened, specifically, the third power supply 106 is opened, the third power supply 106 supplies power to the second coil 105, and the second coil 105 changes the original closed state of the second electrical contact 102, so that the second electrical contact 102 is opened; the third switch 150 is closed, the second loop is turned on, specifically, the fourth power supply 108 is in a closed state, and the third coil 107 is powered off, so that the third electrical contact 103 maintains the original closed state; thus, the second power source 101 supplies power to the first coil 104 through the third electrical contact 103 to close the first electrical contact 112.
That is, in the present embodiment, the second electrical contact 102 is closed in the non-lock ladder state, and opened after receiving a signal to start locking the ladder; the third electrical contact 103 is in a closed state both in the non-locking ladder state and after receiving a signal to start locking the ladder. Since the first loop and the second loop are both conductive in the non-locking state, the state of the power control loop 110 is not changed by merely turning off the first loop after receiving the signal to start locking the ladder. Thus, at the moment of opening the first loop, the power control loop 110 still maintains good stability.
In other embodiments, the elevator may have only the second electrical contact closed and the third electrical contact open during normal operation. When the signal for starting locking the ladder is received, the second electric contact is immediately opened, and the third electric contact is immediately conducted, so that the first loop is opened, the second loop is closed, and the power supply control loop is kept conducting.
After receiving the signal for locking the elevator, the elevator control cabinet 113 is still in a power consumption state, mainly because the elevator needs to execute an elevator locking instruction at this time, such as returning to the elevator locking base station and delaying closing the door. Therefore, after receiving the signal for locking the elevator, the second loop is kept in a conducting state, so that the elevator control cabinet 113 can be ensured to complete corresponding control operation, and the stability and safety of the whole elevator are facilitated.
After receiving the signal of locking the ladder, the second switch 140 and the third switch 150 are both turned off, so that the first loop and the second loop are both turned off, specifically, the fourth power supply 108 and the third power supply 106 are both turned on, and the third coil 107 and the second coil 105 are both powered on, so that the third electrical contact 103 is both turned off from the second electrical contact 102; thus, the first coil 104 is de-energized, causing the first electrical contact 112 to open.
I.e. after receiving the lock ladder completed signal, the third electrical contact 103 undergoes a switch from closed to open, while the second electrical contact 102 remains open, the state of which has not undergone a switch. At this time, the power control loop 110 is disconnected, and the elevator control cabinet 113 does not consume power any more, so that the energy saving purpose in the elevator locking state is achieved.
When the ladder locking switch is restored, the second switch 140 and the third switch 150 are both opened, the first loop and the second loop are both turned on, specifically, the third power supply 106 and the fourth power supply 108 are both turned off, and the second coil 105 and the third coil 107 are both powered off, so that the second electrical contact 102 and the third electrical contact 103 are both closed, the ladder locking control loop 100 is turned on, and the first coil 104 is powered on; and then the first electrical contact 112 is closed, the elevator control cabinet 113 is powered on, and the elevator is put into normal service.
In other embodiments, only the second electrical contact may be closed, i.e. only the first loop is conductive, after the ladder lock switch is restored.
In summary, in this embodiment, the locking ladder control circuit controls the closing or opening of the first electrical contact, so that the elevator control cabinet can obtain electricity in a non-locking ladder state or after receiving a signal from the start of locking the ladder; the elevator control cabinet can lose electricity after receiving the signal of locking the elevator, so that the elevator is not consumed in the elevator locking state, and the aim of saving energy is fulfilled.
A second embodiment of the invention provides an elevator comprising the elevator locking system of the first embodiment.
In the non-locking state and after receiving a signal for starting locking, the locking control loop controls the first electric contact to be closed or opened, so that the elevator control cabinet can obtain electricity in the non-locking state or after receiving the signal for starting locking, and the whole elevator is in a power consumption state; the elevator control cabinet can lose electricity after receiving the signal of locking the elevator, so that the elevator is not consumed in the elevator locking state, and the aim of saving energy is fulfilled.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is therefore intended to be limited only by the appended claims.
Claims (7)
1. An elevator lock system, comprising:
the locking ladder control loop comprises a first loop and a second loop which are connected in parallel; the first loop is conducted in a non-locking ladder state and is disconnected after receiving a signal for starting locking the ladder; the second loop is conducted after receiving a signal for starting the locking ladder, and is disconnected after receiving a signal for finishing the locking ladder;
the power supply control loop comprises a first power supply, a first electric contact, a first coil and an elevator control cabinet, wherein the first coil and the first electric contact form a first switch, and the first coil controls the first electric contact to be closed or opened; if the first loop and/or the second loop are/is conducted, the first electrical contact is closed, and the power supply control loop is conducted so that the first power supply supplies power to the elevator control cabinet; if the first loop and the second loop are disconnected, the first electrical contact is disconnected, and the power supply control loop is disconnected so that the first power supply stops supplying power to the elevator control cabinet;
the first loop includes: the second switch comprises a second electric contact and a second coil, and the second coil controls the closing or opening of the second electric contact; the first loop further includes: a third power supply that supplies power to the second coil;
the second circuit includes: the second power supply, a third switch and the first coil, wherein the third switch comprises a third electric contact and a third coil, and the third coil controls the closing or opening of the third electric contact; the second circuit further includes: a fourth power supply that supplies power to the third coil;
in the non-locking ladder state, the second switch is closed to enable the first loop to be conducted, in particular, the third power supply is closed, the second coil is powered off, so that the second electric contact keeps a closed state, the second power supply supplies power to the first coil through the second electric contact, the first coil enables the first electric contact to be in the closed state,
the first loop is conducted; after receiving a signal for starting the locking ladder, the second switch is opened to enable the first loop to be opened, the third switch is closed to enable the second loop to be conducted, specifically, the third power supply is opened, the third power supply supplies power to the second coil, the second coil changes the closing state of the second electric contact to enable the second electric contact to be opened, the fourth power supply is in the closing state, the third coil is powered off to enable the third electric contact to be kept in the closing state, and then the second power supply supplies power to the first coil through the third electric contact to enable the first electric contact to be closed, and the second loop is conducted; after receiving the signal of locking ladder completion, the third switch with the second switch all opens and makes first return circuit with the second return circuit all opens, specifically, third power and fourth power all open, and third coil and second coil all get electric for third electrical contact all opens with the second electrical contact, and first coil loses the electricity, makes first electrical contact disconnection, thereby first return circuit and second return circuit all open.
2. The elevator lock ladder system of claim 1, wherein the first electrical contact is a normally open electrical contact.
3. The elevator lock ladder system of claim 1, wherein the second electrical contact is a normally closed electrical contact.
4. The elevator lock ladder system of claim 1, wherein the third electrical contact is a normally closed electrical contact.
5. The elevator lock system of claim 1, wherein the first power source is a strong current.
6. The elevator lock system of claim 1, wherein the second power source is a weak current.
7. An elevator, characterized by comprising: an elevator lock system according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011339864.8A CN112420449B (en) | 2020-11-25 | 2020-11-25 | Elevator locking system and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011339864.8A CN112420449B (en) | 2020-11-25 | 2020-11-25 | Elevator locking system and elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112420449A CN112420449A (en) | 2021-02-26 |
| CN112420449B true CN112420449B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011339864.8A Active CN112420449B (en) | 2020-11-25 | 2020-11-25 | Elevator locking system and elevator |
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| Country | Link |
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| CN (1) | CN112420449B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028030B (en) * | 2022-06-30 | 2023-12-19 | 广州广日电梯工业有限公司 | Elevator locking method, system and device of elevator system and storage medium |
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| CN202558405U (en) * | 2012-05-10 | 2012-11-28 | 戴开煌 | Emergent electric control switching off protection system of elevator |
| CN103030038A (en) * | 2012-12-28 | 2013-04-10 | 江南嘉捷电梯股份有限公司 | Elevator |
| CN103482436A (en) * | 2013-09-26 | 2014-01-01 | 四川科莱电梯有限责任公司 | Energy-saving circuit of elevator |
| CN106980279A (en) * | 2017-04-11 | 2017-07-25 | 快意电梯股份有限公司 | Auto-power on power-down control device for elevator |
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2020
- 2020-11-25 CN CN202011339864.8A patent/CN112420449B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723209A (en) * | 2009-12-18 | 2010-06-09 | 广州市特种机电设备检测研究院 | Intelligent power-saving method and device for lift |
| CN102241356A (en) * | 2011-06-28 | 2011-11-16 | 杭州优迈科技有限公司 | Energy saving method and device for elevator door motor |
| CN102285564A (en) * | 2011-07-18 | 2011-12-21 | 中铁建工集团有限公司 | External elevator door interlocking system for building and method thereof |
| CN202558405U (en) * | 2012-05-10 | 2012-11-28 | 戴开煌 | Emergent electric control switching off protection system of elevator |
| CN103030038A (en) * | 2012-12-28 | 2013-04-10 | 江南嘉捷电梯股份有限公司 | Elevator |
| CN103482436A (en) * | 2013-09-26 | 2014-01-01 | 四川科莱电梯有限责任公司 | Energy-saving circuit of elevator |
| CN106980279A (en) * | 2017-04-11 | 2017-07-25 | 快意电梯股份有限公司 | Auto-power on power-down control device for elevator |
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|---|---|
| CN112420449A (en) | 2021-02-26 |
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