CN110790106A - Household elevator - Google Patents
Household elevator Download PDFInfo
- Publication number
- CN110790106A CN110790106A CN201910797896.3A CN201910797896A CN110790106A CN 110790106 A CN110790106 A CN 110790106A CN 201910797896 A CN201910797896 A CN 201910797896A CN 110790106 A CN110790106 A CN 110790106A
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- Prior art keywords
- switch
- power supply
- alternating current
- elevator
- plc
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- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
Abstract
The application discloses a household elevator, which comprises a switching power supply, a first alternating current contactor, a second alternating current contactor, an Uninterruptible Power Supply (UPS) and a Programmable Logic Controller (PLC); the switching power supply is connected with an alternating current power supply through the first alternating current contactor, and the switching power supply is connected with the UPS through the second alternating current contactor; the device also comprises an ascending switch, a descending switch, an ascending button, a descending button and a motor; the controller PLC is connected with the ascending switch and the descending switch; the elevator further comprises: an overweight detection device; the overweight detection device comprises: the middle section of the fixed beam is hinged with the top of the lift car; the two reversing pulleys are respectively arranged at two ends of the fixed beam; the elevator further comprises: an elastic member connected to the rope to carry the car, the elastic member having a rated deformation amount; the position switch is loosened.
Description
The technical field is as follows:
the invention relates to a household elevator.
Background art:
an elevator is a transport device serving a number of specific floors in a building, the cars of which travel in at least two rigid tracks perpendicular to the horizontal or inclined at an angle of less than 15 ° to the vertical.
With the technical innovation and social development, a home elevator suitable for villas or small high-rise buildings has come to be used, great convenience is brought to the life of users, and the users can safely and quickly reach the appointed floors.
Due to the structural characteristics of villas and small high-rise buildings, the home elevator cannot be stably arranged in the building like a commercial elevator, and the home elevator is different from the existing elevator in electric control and structural design to ensure the stable operation of the home elevator. And the existing elevator power supply usually only adopts a common alternating current power supply or a common direct current power supply, when the power supply fails, the elevator cannot be normally used, and great potential safety hazards exist.
The invention content is as follows:
the embodiment of the invention provides a home elevator, which solves the problem that the home elevator in the prior art cannot continuously supply power and power supply safety.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a household elevator comprises a switching power supply, a first alternating current contactor, a second alternating current contactor, an Uninterruptible Power Supply (UPS) and a Programmable Logic Controller (PLC);
the switching power supply is connected with an alternating current power supply through the first alternating current contactor, and the switching power supply is connected with the UPS through the second alternating current contactor;
the first alternating current contactor comprises a main contact, two long-open auxiliary contacts and a normally-closed auxiliary contact; the second alternating current contactor at least comprises a main contact and two long-open auxiliary contacts; the main contact of the first alternating current contactor is arranged between a zero line and a live line of the alternating current power supply, two normally open auxiliary contacts of the first alternating current contactor are respectively arranged on the zero line and the live line of the alternating current power supply, the normally closed auxiliary contact of the first alternating current contactor is connected with the main contact of the second alternating current contactor, and an emergency switch is arranged on the connection point; the two normally open auxiliary contacts of the second alternating current contactor are respectively arranged on a zero line and a live line of the alternating current power supply;
the emergency switch is used for controlling the UPS and the alternating current power supply to be switched, the switch power supply is connected with the PLC, and the PLC is used for controlling the running speed and/or the direction of the elevator motor.
The switching power supply is connected with a PLC, and specifically comprises:
the switch power supply is connected with the PLC through a live wire interface and a zero line interface of the switch power supply; the switching power supply is provided with a live wire interface, a zero line interface, an output positive interface and an output negative interface;
be equipped with first fuse on switching power supply's the positive interface of output, first fuse is used for protecting the positive interface of output.
Be equipped with the second fuse between PLC and switching power supply, the second fuse is used for the protection PLC.
And an air circuit breaker is arranged between the live wire interface of the switching power supply and the second alternating current contactor.
The PLC is provided with a brake, the brake is used for emergency braking, and an electromagnetic relay is arranged between the PLC and the brake.
The household elevator also comprises an ascending switch, a descending switch, an ascending button, a descending button and a motor;
the controller PLC is connected with the ascending switch and the descending switch;
the ascending switch is triggered based on the ascending button, so that the state of the ascending switch is changed, the controller controls the motor of the elevator to rotate in a first direction according to the change of the state of the ascending switch, and the ascending process of the elevator is started;
the descending switch is triggered based on the descending button, so that the state of the descending switch is changed, the controller controls the elevator motor to rotate in the second direction according to the change of the state of the descending switch, and the descending process of the elevator is started.
The elevator further comprises: an overweight detection device;
the overweight detection device comprises: the middle section of the fixed beam is hinged with the top of the lift car;
the two reversing pulleys are respectively arranged at two ends of the fixed beam;
the lifting piece is connected with the fixed beam and comprises a reel with a rope groove and a cable wound on the reel, the reel is arranged between the two reversing pulleys and is offset from the midpoint of the connecting line of the two reversing pulleys, the cable is rotated by the two reversing pulleys to extend backwards and upwards, and the lengths of the cables on the two sides of the reel are different;
one end of the motor is connected with the reel, and the other end of the motor extends to the end part of the fixed beam far away from the reel and forms an indicating end; the motor is connected with the fixed beam through the connecting seat;
the displacement monitoring piece is used for monitoring the displacement of the indicating end and is electrically connected with the controller.
The displacement monitoring piece comprises a contact switch, the contact switch is arranged on one of the indicating end or the car, a triggering part is arranged on the other one of the indicating end or the car, and when the displacement of the indicating end is greater than a set threshold value, the triggering part triggers the contact switch.
The elevator further comprises:
an elastic member connected to the rope to carry the car, the elastic member having a rated deformation amount;
a loose position switch for detecting a change in the elastic member below the rated deformation amount;
the actuating piece is connected with the elastic piece, the position of the actuating piece changes along with the deformation of the elastic piece, and the position of the actuating piece comprises a first position interval for turning on the loose position switch and a second position interval for turning off the loose position switch.
According to the embodiment of the invention, the emergency switch, the first alternating current contactor and the second alternating current contactor which are arranged on the home elevator are matched, so that the switching between a common alternating current power supply and a standby power supply is realized, the switching power supply is always in a connected state, and the home elevator is continuously supplied with power; the actions of the home elevator are controlled by a PLC controller; the emergency braking of the elevator is realized by the cooperation of the PLC and the brake, so that the reliability and the safety of the elevator are improved; the fuse protector is matched with the circuit breaker to protect a power supply line, and the circuit breaker has the advantages of safety, reliability and high response speed.
Description of the drawings:
fig. 1 is a circuit diagram of a power supply control circuit for an elevator according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a home elevator provided in an embodiment of the present invention.
Fig. 3 is an enlarged view of region a in fig. 2.
Fig. 4 is a schematic structural diagram of a motor and a fixed beam provided in an embodiment of the present invention.
Fig. 5 is an enlarged view of region B in fig. 2.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. As shown in fig. 1, an elevator power control circuit according to an embodiment of the present invention includes a switching power supply for converting an ac power into a power supply suitable for a motor and a PLC (Programmable logic controller) of a home elevator, for example, converting an ac power into a 24-volt dc power and outputting the dc power.
In one embodiment of the present application, the PLC controller is used to control a motor of a home elevator so that the elevator operates according to a preset rule. Specifically, the PLC controller is SR 20.
As shown in fig. 1, the live line L and the neutral line N of the ac Power Supply are connected to the switching Power Supply through a first ac contactor KM1, and the Uninterruptible Power Supply (UPS) is connected to the switching Power Supply through a second ac contactor KM 2.
Specifically, a backup power supply is provided in addition to the first ac contactor KM1 connected to the live line L and the neutral line N of the ac power supply. And an emergency switch is arranged between the standby power supply and the second alternating current contactor KM 2. The emergency switch is used for switching the standby power supply and the normal power supply alternating current power supply based on triggering of people or control of a controller. For example, after the normally supplied ac power source is powered off, the emergency switch is controlled to be closed, so that the UPS is connected to the switching power source through the second ac contactor KM 2.
The ac contactor includes a main contact, a normally open auxiliary contact, and a normally closed auxiliary contact, and controls a circuit using the main contact and turns on a control circuit using the auxiliary contact. The main contacts are typically normally open contacts, while the auxiliary contacts include normally open contacts and normally closed contacts. The power of the action of the alternating current contactor is derived from a magnetic field generated by alternating current passing through a coil with an iron core, the electromagnetic iron core is formed by overlapping two E-shaped young silicon steel sheets, one of the two E-shaped young silicon steel sheets is fixed with the iron core, and the coil is sleeved on the iron core. In order to stabilize the magnetic force, a short circuit ring is added on the attraction surface of the iron core. The AC contactor is reset by a spring after power failure. The other is a movable iron core which is the same as the fixed iron core in structure and is used for driving the main contact and the auxiliary contact to be closed or opened. The contactor has the working principle that when a coil of the contactor is electrified, the coil current can generate a magnetic field, the generated magnetic field enables a static iron core to generate electromagnetic attraction to attract a movable iron core and drive an alternating current contact point to act, a normally closed contact is opened, a long open contact is closed, and the normally closed contact and the long open contact are linked. When the coil is powered off, the electromagnetic attraction disappears, the armature is released under the action of the release spring, the contact is restored, the long-open contact is disconnected, and the normally-closed contact is closed.
As shown in fig. 1, the first ac contactor KM1 includes a main contact, two long open auxiliary contacts, one normally closed auxiliary contact, and the second ac contactor KM2 includes a main contact, two long open auxiliary contacts. The main contact of the first alternating current contactor KM1 is arranged between the zero line N and the live line L, and the two normally-open auxiliary contacts of the first alternating current contactor KM1 are respectively arranged on the zero line N and the live line L. The normally closed auxiliary contact of the first alternating current contactor KM1 is connected with the main contact of the second alternating current contactor KM2, and an emergency switch is arranged on the connection point. Two normally open auxiliary contacts of the second alternating current contactor KM2 are arranged on the neutral line N and the live line L. It can be seen that the second ac contactor KM1 is connected in series with the UPS and in parallel with the first ac contactor KM1, and the emergency switch is disposed between the first ac contactor KM1 and the second ac contactor KM 2.
In one embodiment of the present application, a first fuse FU1 is disposed on the output positive interface of the switching power supply, and the first fuse FU1 is used for protecting the output positive interface. And a second fuse FU2 is arranged between the PLC and the switching power supply, and the second fuse FU2 is used for protecting the PLC.
In fig. 1, a brake YBK is also provided on the PLC controller, said brake being used to implement emergency braking of the home elevator. Be equipped with electromagnetic relay KA between PLC controller and stopper YBK, electromagnetic relay KA is used for connecting PLC controller and stopper YBK to increase the reliability.
In addition, an air circuit breaker QF1 is arranged at the connection between the switching power supply and the PLC, the first ac contactor KM1 and the second ac contactor KM2, and the air circuit breaker QF1 is used for providing protection for the switching power supply.
The operation of the power control circuit for an elevator will be described in detail below.
Under normal conditions, the switch power supply is correspondingly connected with the live wire and the zero wire of the alternating current power supply through the live wire interface and the zero wire interface respectively. Therefore, the switching power source is turned on by the normal 220V ac power source through the main contact and the normally open auxiliary contact of the first ac contactor KM 1. The switch power supply supplies power to the elevator through the output positive interface and the output negative interface. Under the condition, the switch power supply supplies power to the elevator normally, and the elevator can run normally. When the normal 220V alternating-current power supply cannot supply power, if the live line L or the zero line N breaks down and is disconnected, the emergency switch is manually triggered or controlled to be closed by the controller. The first alternating current contactor KM1, the second alternating current contactor KM2 and the emergency switch act in a matched mode, the normally open contact of the first alternating current contactor is disconnected, and the normally closed contact enters a working state; second ac contactor actuation makes switching power supply and zero line N and live wire L disconnection to on being connected to switching power supply to stand-by power supply, stand-by power supply is the UPS power, switches on switching power supply by stand-by power supply, thereby can continuously supply power to elevator and PLC controller, thereby guarantee the normal use and the operation of elevator, the phenomenon that the elevator suddenly stopped can not appear, has promoted the reliability and the security of elevator.
According to the household elevator provided by the embodiment of the invention, the current flowing through the alternating current contactor is utilized to generate the magnetic field to control the load, the switching between the common alternating current power supply and the standby power supply is realized by matching with the on-off of the emergency switch, the switching power supply is kept in the on-state, the switching power supply is ensured to supply power to the household elevator all the time, and the household elevator can supply power in real time.
In one embodiment of the present application, the controller PLC controls the ascent and descent of the elevator through an ascent switch, a descent switch, and a motor connected thereto.
Specifically, an ascending button and a descending button of the elevator are respectively connected with an ascending switch and a descending switch, the ascending switch and the descending switch are connected with a controller PLC, and the PLC is connected with a motor through a frequency converter.
Based on the user triggering the rising switch button, the state of the rising switch changes, for example, the rising switch is closed, and based on the change of the state of the rising switch, the PLC controls the motor to rotate in one direction, so that the elevator rises. Also, upon the user triggering the down switch button, the state of the down switch changes, e.g., the down switch is closed, and upon the change of the state of the down switch, the PLC controls the motor to rotate in the other direction to lower the elevator. As shown in fig. 2 to 4, an embodiment of the present application provides an overweight detection device, including: the middle section of the fixed beam 1 is hinged with the top of the lift car 2; two reversing pulleys 3 respectively arranged at two ends of the fixed beam 1; the lifting piece is connected with the fixed beam 1 and comprises a reel 4 with a rope groove 6, a cable 5 wound on the reel 4 and a motor 7 connected with the reel 4, the reel 4 is arranged between the two reversing pulleys 3 and is offset from the midpoint of the connecting line of the two reversing pulleys 3, the cable 5 extends upwards after being reversed by the two reversing pulleys 3, and the lengths of the cables 5 on the two sides of the reel 4 are different; the driving piece comprises a motor 7 and a connecting seat 8, one end of the motor 7 is connected with the reel 4, the other end of the motor extends to the end part of the fixed beam 1 far away from the reel 4, one end of the motor 7 is connected with the fixed beam 1 through the connecting seat 8, and the other end of the motor forms an indicating end 9; and the displacement monitoring piece is suitable for monitoring the displacement of the indicating end 9, and the displacement monitoring piece 9 is electrically connected with the controller.
In the embodiment of the present application, since the reel 4 is offset at the midpoint of the connection line of the two diverting pulleys 3, the lengths of the cables 5 on the two sides of the reel 4 are different, and further, under the effect of the load of the car 2, the lengths of the cables 5 on the two sides of the reel 4 are different in deformation, so that the car 2 is easily tilted. Therefore through setting up the fixed beam 1 of being connected with car 2 rotation, switching-over pulley 3 sets up on fixed beam 1, and then at the length deflection of the hawser 5 of reel 4 both sides different, fixed beam 1 can rotate 2 cars relatively, and then can rotate with the difference of the adaptation of 4 both sides of reel hawser 5 length variations through fixed beam 1, and simultaneously, cooperation in the middle of car 2's guide pulley and the slide rail of indoor elevator keeps car 2's roughly balanced.
When getting into people or article in the indoor elevator, the load grow of car 2 for hawser 5 elastic deformation extension, because the length of the hawser 5 of reel 4 both sides is different, makes the length variation of the hawser 5 of reel 4 both sides different, and then makes fixed beam 1 incline for car 2 relatively, and then makes the displacement of instruction end 9 production relative car 2. When the displacement of instruction end 9 surpassed the settlement threshold value, can know fixed beam 1 and rotated and surpassed certain angle, and then can know 4 both sides hawser 5 of reel reach certain variation, and then can know 2 loads of car and surpass certain weight, can monitor through the displacement to instruction end 9 from this to monitor 2 loads of car.
In this application embodiment, the displacement monitoring piece can be a displacement sensor, can be installed at the top motor 7 of car 2, need not to set up weighing sensor's mounting structure in the bearing structure department of car 2, therefore the structure is simpler. In addition, the load of the car 2 is monitored by monitoring the displacement of the indicating end 9, and compared with a weighing sensor, the working state of the displacement sensor is more stable and accurate.
More specifically, the connecting base 8 is provided at an end of the motor 7 connected to the reel 4. As shown in fig. 3 and 4, since the reel 4 is connected to the motor 7, the connecting base 8 is disposed at an end of the motor 7 close to the reel 4, so that the connecting base 8 is close to the center of gravity between the reel 4 and the motor 7, thereby making the lifting member more stable. In addition, whole indoor elevator is when using, because hawser 5 transmits 4 horizontal forces for reel 4 can produce certain horizontal moment, and connecting seat 8 sets up the tip that is close to motor 7 of reel 4 department, can shorten the arm of force that reel 4 produced the horizontal force, reduces the moment that the horizontal force that reel 4 produced to connecting seat 8 production.
In the embodiment of the present application, as shown in fig. 3 and 4, the motor 7 includes a gear box 701 connected to the reel 4, and a motor 702 connected to the gear box 701, the gear box 701 is connected to the fixed beam 1 through a connecting seat 8, and an end of the motor 702 facing away from the gear box 701 forms an indicating end 9. One end that motor 702 deviates from gearbox 701 forms and indicates end 9, because the car 2 of domestic indoor elevator is less, extends to car 2 department of 4 opposite sides of reel through making motor 702, is convenient for install motor 702, can make simultaneously to indicate end 9 to be far away from the pin joint of fixed beam 1 with car 2, can be when fixed beam 1 rotates certain angle, indicate end 9 to have relatively great displacement, be favorable to the monitoring more.
In the embodiment of the present application, the connection socket 8 includes: a flat plate portion 801 connected to the fixed beam 1; and the vertical plate part 802 is connected with the top of the flat plate part 801 and is connected with the end part of the gearbox 701, which is far away from the motor 702. Therefore, when the motor 7 is installed, the flat plate part 801 is only connected with the fixed beam 1, and the flat plate part 801 is connected with the gearbox 701. Wherein, the holistic L shape that is of connecting seat 8, connecting seat 8 links to each other with fixed beam 1 and gearbox 701 through the bolt respectively, and connecting seat 8 sets up in the one end that gearbox 701 deviates from motor 702, can be convenient for at 2 upsides of car, links to each other connecting seat 8 and fixed beam 1.
In the embodiment of the application, the displacement monitoring piece comprises a contact switch 10, the contact switch 10 is arranged on one of the indicating end 9 or the car 2, a triggering part 11 is arranged on the other of the indicating end 9 or the car 2, and the triggering part 11 triggers the contact switch 10 when the displacement of the indicating end 9 is larger than a set threshold value. By setting the displacement monitoring member as the contact switch 10, the corresponding indicating end 9 can be moved to a position when the car 2 is in a rated load state, so that the trigger part 11 is in contact with the contact switch 10, and the contact switch 10 is triggered, and thus whether the car 2 is overloaded or not can be monitored.
In the embodiment of the present application, as shown in fig. 3 and 4, the contact switch 10 is connected to the car 2; the monitoring mechanism further comprises a mounting bracket 12 connected with the indicating end 9, a threaded hole is formed in the mounting bracket 12, the locking mechanism further comprises a push rod 13 screwed through the threaded hole, the push rod 13 is arranged approximately along the tangential direction of rotation of the indicating end 9, and a trigger part 11 is formed at the end part, facing the contact switch 10, of the push rod 13. Wherein, the tangential direction can be that when trigger portion 11 triggers the contact switch, push rod 13 is tangent with the circle that trigger portion 11 used fixed beam 1 pin joint as the centre of a circle.
By providing the contact switch 10 on the car 2, the line of the contact switch 10 can be stabilized. The trigger part 11 is formed at the end of the push rod 13, so that the trigger part 11 can accurately trigger the contact switch 10, and the distance between the trigger part 11 and the contact switch 10 can be adjusted by rotating the push rod 13, so that the overload weight of the load of the car 2 can be conveniently adjusted.
In the embodiment of the present application, the contact switch 10 may be provided on the motor 702, and the trigger 11 may be provided on the car 2. Furthermore, the arrangement of the triggering portion 11 is not limited to the push rod 13, and in an alternative embodiment, the triggering portion 11 may be a projection fixedly connected to the motor 702 or a projection connected to the car 2.
As shown in fig. 5, the home elevator further includes: an elastic member 14, an actuating member 15 and a loose position switch 16. The loose position switch 16 is provided in a deformation direction of the elastic member 14 below a rated deformation amount. The loose position switch 16 is specifically configured to detect that the deformation of the elastic member 14 is lower than the rated deformation, that is, the elastic member 14 is transformed from a normal compressed state within the rated deformation range to an abnormal state with a deformation lower than the rated deformation, and the structural configuration change of the elastic member 14 triggers the loose position switch 16.
The actuator 15 is connected to the elastic member 14, the position of the actuator 15 changes in accordance with the amount of deformation of the elastic member 14, and the position of the actuator 15 includes a first position interval in which the loose position switch 16 is turned on and a second position interval in which the loose position switch 16 is turned off. In order to ensure that the switch of the loose position 6 can be triggered relatively accurately when the deformation of the elastic member 14 is lower than the rated deformation, in the embodiment, the actuating member 15 is added, the actuating member 15 is connected with the elastic member 14, so that the actuating member 15 obtains the capability of expressing the deformation of the elastic member 14, the movable range of the actuating member 15 is set to a first position interval and a second position interval along with the change of the elastic member 14, and the actuating member 15 in the first position interval indicates that the deformation of the elastic member 14 is lower than the rated deformation, so that the actuating member 15 can trigger the switch of the loose position 16; in contrast, if the actuator 15 in the second position interval indicates that the deformation amount of the elastic member 14 is within the rated deformation amount range, the actuator 15 cannot trigger the loose position switch 16, and the loose position switch 16 is turned off.
It will be appreciated that the loose position switch 16 can be a limit switch in contact with the actuator 15 or an electro-optical proximity switch not in contact with the actuator 15, and the specific type and installation method can be selected according to the functions of the existing product, and can be flexibly used.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (8)
1. A home elevator characterized in that: the device comprises a switching power supply, a first alternating current contactor, a second alternating current contactor, an Uninterruptible Power Supply (UPS) and a Programmable Logic Controller (PLC);
the switching power supply is connected with an alternating current power supply through the first alternating current contactor, and the switching power supply is connected with the UPS through the second alternating current contactor;
the first alternating current contactor comprises a main contact, two long-open auxiliary contacts and a normally-closed auxiliary contact; the second alternating current contactor at least comprises a main contact and two long-open auxiliary contacts; the main contact of the first alternating current contactor is arranged between a zero line and a live line of the alternating current power supply, two normally open auxiliary contacts of the first alternating current contactor are respectively arranged on the zero line and the live line of the alternating current power supply, the normally closed auxiliary contact of the first alternating current contactor is connected with the main contact of the second alternating current contactor, and an emergency switch is arranged on the connection point; the two normally open auxiliary contacts of the second alternating current contactor are respectively arranged on a zero line and a live line of the alternating current power supply;
the emergency switch is used for controlling the UPS and the alternating current power supply to be switched, the switch power supply is connected with the PLC, and the PLC is used for controlling the running speed and/or the direction of the elevator motor.
2. A home elevator according to claim 1, characterized in that: the switching power supply is connected with a PLC, and specifically comprises:
the switch power supply is connected with the PLC through a live wire interface and a zero line interface of the switch power supply; the switching power supply is provided with a live wire interface, a zero line interface, an output positive interface and an output negative interface;
be equipped with first fuse on switching power supply's the positive interface of output, first fuse is used for protecting the positive interface of output.
Be equipped with the second fuse between PLC and switching power supply, the second fuse is used for the protection PLC.
3. A home elevator according to claim 2, characterized in that: and an air circuit breaker is arranged between the live wire interface of the switching power supply and the second alternating current contactor.
4. A home elevator according to claim 1, characterized in that: the PLC is provided with a brake, the brake is used for emergency braking, and an electromagnetic relay is arranged between the PLC and the brake.
5. The home elevator according to claim 1, characterized in that: the household elevator also comprises an ascending switch, a descending switch, an ascending button, a descending button and a motor;
the controller PLC is connected with the ascending switch and the descending switch;
the ascending switch is triggered based on the ascending button, so that the state of the ascending switch is changed, the controller controls the motor of the elevator to rotate in a first direction according to the change of the state of the ascending switch, and the ascending process of the elevator is started;
the descending switch is triggered based on the descending button, so that the state of the descending switch is changed, the controller controls the elevator motor to rotate in the second direction according to the change of the state of the descending switch, and the descending process of the elevator is started.
6. Home elevator according to claim 1,
the elevator further comprises: an overweight detection device;
the overweight detection device comprises: the middle section of the fixed beam is hinged with the top of the lift car;
the two reversing pulleys are respectively arranged at two ends of the fixed beam;
the lifting piece is connected with the fixed beam and comprises a reel with a rope groove and a cable wound on the reel, the reel is arranged between the two reversing pulleys and is offset from the midpoint of the connecting line of the two reversing pulleys, the cable is rotated by the two reversing pulleys to extend backwards and upwards, and the lengths of the cables on the two sides of the reel are different;
one end of the motor is connected with the reel, and the other end of the motor extends to the end part of the fixed beam far away from the reel and forms an indicating end; the motor is connected with the fixed beam through the connecting seat;
the displacement monitoring piece is used for monitoring the displacement of the indicating end and is electrically connected with the controller.
7. Home elevator according to claim 6,
the displacement monitoring piece comprises a contact switch, the contact switch is arranged on one of the indicating end or the car, a triggering part is arranged on the other one of the indicating end or the car, and when the displacement of the indicating end is greater than a set threshold value, the triggering part triggers the contact switch.
8. The home elevator according to claim 6, characterized in that the elevator further comprises:
an elastic member connected to the rope to carry the car, the elastic member having a rated deformation amount;
a loose position switch for detecting a change in the elastic member below the rated deformation amount;
the actuating piece is connected with the elastic piece, the position of the actuating piece changes along with the deformation of the elastic piece, and the position of the actuating piece comprises a first position interval for turning on the loose position switch and a second position interval for turning off the loose position switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910797896.3A CN110790106A (en) | 2019-08-27 | 2019-08-27 | Household elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910797896.3A CN110790106A (en) | 2019-08-27 | 2019-08-27 | Household elevator |
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| CN110790106A true CN110790106A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910797896.3A Pending CN110790106A (en) | 2019-08-27 | 2019-08-27 | Household elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735612A (en) * | 2022-03-25 | 2022-07-12 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735612A (en) * | 2022-03-25 | 2022-07-12 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
| CN114735612B (en) * | 2022-03-25 | 2024-02-27 | 上海新时达电气股份有限公司 | Brake power supply circuit, control method thereof and elevator |
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