CN114598098A - Two-in-one permanent magnet synchronous traction machine special for elevator - Google Patents
Two-in-one permanent magnet synchronous traction machine special for elevator Download PDFInfo
- Publication number
- CN114598098A CN114598098A CN202111404466.4A CN202111404466A CN114598098A CN 114598098 A CN114598098 A CN 114598098A CN 202111404466 A CN202111404466 A CN 202111404466A CN 114598098 A CN114598098 A CN 114598098A
- Authority
- CN
- China
- Prior art keywords
- planetary gear
- permanent magnet
- magnet synchronous
- reducing mechanism
- speed reducing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0453—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with planetary or epicycloidal gear, e.g. differential gear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a special two-in-one permanent magnet synchronous traction machine for an elevator, which solves the problem that the traditional elevator traction machine in the prior art is of a structure of a motor and a reduction gearbox and has larger volume, and comprises the following components: the control system comprises: the permanent magnet synchronous motor is controlled in real time through a magnetic grid ruler, an encoder and a frequency converter; permanent magnet synchronous machine: the planetary gear speed reducing mechanism is positioned in the planetary gear speed reducing mechanism and provides power to the planetary gear speed reducing mechanism to drive the planetary gear speed reducing mechanism to rotate; planetary gear reduction mechanism: the permanent magnet synchronous motor is positioned in the traction sheave, reduces the speed of the power provided by the permanent magnet synchronous motor and transmits the power to the traction sheave; a traction sheave: the power after the speed reduction of the planetary gear speed reducing mechanism is received, and the steel wire rope is dragged to drive the elevator car to move up and down. A planetary gear speed reducing mechanism is added, so that the rotating speed of the motor is increased; the planetary gear speed reducing mechanism and the motor are arranged inside the traction sheave, so that the space is saved, the outer diameter of the motor can be reduced, and the efficiency and the power density can be increased.
Description
Technical Field
The utility model relates to the technical field of elevator equipment, in particular to a special two-in-one permanent magnet synchronous traction machine for an elevator.
Background
With the proposal of the "double carbon" target, namely the carbon dioxide emission strives to reach the peak value in 2030, the carbon neutralization is strived to be realized in 2060, and the requirement on the energy utilization rate in the market is further increased. Therefore, there is a need for improving the efficiency of the permanent magnet synchronous traction machine through technical improvement.
The efficiency of the permanent magnet synchronous traction machine applied to the existing elevator is about 87%, because the rotating speed of the motor is low, the efficiency is difficult to improve in the design of the motor body, and more material cost needs to be invested if higher efficiency is needed. The high-speed motor can obtain higher efficiency relatively easily, and for example, when the rotating speed of the motor of a new energy automobile is about 2000 revolutions, the efficiency can reach 97%, and the power density is higher. Therefore, the high-speed motor has the characteristics of high efficiency, high power density and small volume.
Meanwhile, elevators without machine rooms and elevators with small machine rooms are increasingly favored by customers, which requires that the size of the permanent magnet synchronous gearless motor is smaller and smaller, and along with this, miniaturized and ultrathin tractors such as steel belt tractors and axial magnetic field tractors have appeared. The high-speed motor just meets the market demand of small volume, so the advantage of the high-speed motor is obvious, and the key problem is how to configure a speed reducing mechanism to enable the high-speed motor to be applied to the field of elevators.
The early tractor is a structure of a motor and a reduction gearbox. For example, the utility model is disclosed in 2016, 1, 25 th of the chinese patent office, under the name of CN205381849U, and has an alarm function. The utility model comprises a frame, a motor, a reduction gearbox, a traction sheave, a brake, an encoder, a main controller, a speed sensor, an alarm, a display and a wireless communication module, wherein the main controller is respectively connected with the speed sensor, the alarm, the display and the wireless communication module; the goods elevator tractor with the alarm function adopts the permanent magnet synchronous motor as the driving motor of the tractor, and has the characteristics of high power factor and high efficiency; the goods elevator tractor with the alarm function adopts the planetary gear reduction box with small tooth difference, the efficiency of the reduction box can reach more than 95 percent, and the reduction box has compact structure and convenient processing; and this utility model has alarming function's goods lift hauler adopts the running speed that speed sensor gathered the driving sheave in real time, and when the running speed of driving sheave exceeded the predetermined range, controller accessible control alarm sent the police dispatch newspaper, has improved the security of elevator hauler. But are bulky and costly. The existing permanent magnet synchronous motor has the advantages of simple structure and no maintenance, but has the problems of high rare earth permanent magnet cost and low efficiency of low speed and large torque.
Disclosure of Invention
The utility model aims to overcome the problem that the traditional elevator traction machine in the prior art is of a structure of a motor and a reduction gearbox and has larger volume, and provides a special two-in-one permanent magnet synchronous traction machine for an elevator.
In order to achieve the purpose, the utility model adopts the following technical scheme: the method comprises the following steps:
the control system comprises: the permanent magnet synchronous motor is controlled in real time through a magnetic grid ruler, a rotary encoder and a frequency converter;
permanent magnet synchronous machine: the planetary gear speed reducing mechanism is positioned in the planetary gear speed reducing mechanism and provides power to the planetary gear speed reducing mechanism to drive the planetary gear speed reducing mechanism to rotate;
planetary gear reduction mechanism: the permanent magnet synchronous motor is positioned in the traction sheave, reduces the speed of the power provided by the permanent magnet synchronous motor and transmits the power to the traction sheave;
a traction sheave: the power after the speed reduction of the planetary gear speed reducing mechanism is received, and the steel wire rope is dragged to drive the elevator car to move up and down.
The power of the permanent magnet synchronous motor is transmitted to the traction sheave through the speed reduction of the planetary gear speed reducing mechanism, and the traction sheave drags the steel wire rope to drive the lift car to move up and down. The permanent magnet synchronous motor is arranged in the planetary gear speed reducing mechanism, the motor is not provided with a shell, the planetary gear speed reducing mechanism is arranged in the traction sheave, the internal space of the traction sheave is fully utilized, the appearance of the traction sheave is very simple, and the internal structure is very compact. And because the planetary gear speed reducing mechanism is added, the rotating speed of the motor is improved, the outer diameter of the motor can be reduced in design, and the efficiency and the power density can be increased. The efficiency of the motor body is more than 92%, the transmission efficiency of the planetary gear is close to 98%, and the overall efficiency is more than 90%.
Preferably, the rotary encoder: the control system is arranged on the permanent magnet synchronous motor and feeds back the rotating speed and the position of the permanent magnet synchronous motor to the control system.
Preferably, the permanent magnet synchronous motor includes:
a main shaft: the spindle is a fixed non-rotating shaft, and is provided with a hole or a groove for leading out a power line of the stator component and a power line of the rotary encoder;
a stator assembly: a power supply externally connected with the frequency converter and used for providing a rotating magnetic field for the rotor assembly;
rotor assembly: the planetary gear speed reducing mechanism rotates under the action of the rotating magnetic field of the stator assembly and drives the planetary gear speed reducing mechanism to rotate.
The permanent magnet synchronous motor adopts an outer rotor structure, the stator assembly is sleeved on the main shaft, the rotor assembly is sleeved on the stator assembly, and the rotor assembly is connected with the planetary gear speed reducing mechanism.
Preferably, the planetary gear reduction mechanism includes a planetary gear train including:
a sun gear: receiving the rotary power from the rotor assembly and transmitting the rotary power to the planet wheels;
planet wheel: the planetary gear is connected with the main shaft through a planetary carrier, receives the rotary power from the sun gear and transmits the rotary power to the outer gear ring;
outer gear ring: receives the rotational power from the planetary gear and transmits the rotational power of the planetary gear to the traction sheave.
The rotor assembly of the permanent magnet synchronous motor and the sun gear of the planetary gear are in interference connection and are provided with the positioning pins or the flat keys, so that torque can be transmitted between the outer rotor and the sun gear, and relative displacement cannot be generated. The planet carrier of the planetary gear is fixed on the main shaft, so that the planetary gear can rotate, and the planet carrier cannot rotate. The outer gear ring is respectively connected with the planet wheel and the traction wheel, the outer gear ring of the planet gear and the traction wheel are in interference connection with each other and are provided with the positioning pin, the structure is more compact, the internal space of the traction wheel is fully utilized, the torque can be transmitted between the outer gear ring and the traction wheel, and no relative displacement is generated. The traction sheave serves as a part of the housing, thereby eliminating the housing structure of the conventional transmission and the housing structure of the conventional motor. After the permanent magnet synchronous motor is electrified, a rotor in the rotor assembly can drive the sun gear to rotate when rotating, the sun gear can drive the planet gear to rotate when rotating, the planet gear transmits power to the outer gear ring, and the outer gear ring drives the traction wheel to rotate. Therefore, the rotation of the permanent magnet synchronous motor is transmitted to the traction sheave after being reduced by the planetary gear reduction mechanism.
Preferably, the magnetic scale: the device is arranged in an elevator shaft, and is used for detecting the speed and position signals of the elevator car in real time and feeding back the signals to a control system. The magnetic grid ruler outputs signals by adopting differential or single-ended pulses, and the product has small and exquisite appearance and is convenient to install in a small space; the elevator shaft is resistant to complex working environments such as oil stain, liquid, dust and vibration and is suitable for elevator shafts. And meanwhile, the device has high reliability and high precision.
Preferably, the traction device further comprises stressed end covers, and the stressed end covers are arranged on two sides of the traction sheave. The design of the utility model is that the traction sheave is not provided with a brake disc, and the brake surface is the outer edge surface of the stressed end cover. The advantage is that the structure is simpler, has utilized the terminal surface of current part, does not need to design a brake lining alone. Meanwhile, the stressed end covers are arranged on two sides of the traction sheave and form an internal space with the traction sheave, and the permanent magnet synchronous motor and the planetary gear speed reducing mechanism are arranged in the internal space, so that the space is saved, and the structure is more compact.
Preferably, the bearing further comprises a first bearing: the traction sheave is supported, and the friction between the traction sheave and the main shaft is reduced. The first bearing is sleeved on the main shaft and is positioned in the middle of the stressed end cover.
Preferably, the device further comprises a brake: acts on the stress end cover to keep the elevator car static and the position of the elevator car unchanged when the elevator stops running. The brake can make the running elevator automatically stop the elevator car when the power supply is cut off, and simultaneously, when the elevator stops running, the brake can ensure that the elevator car keeps still and the position is unchanged under the condition of 125 percent of rated load.
Preferably, the rotary encoder is an electromagnetic induction rotary transducer. The rotary variable sensor has low price, and can be matched with a magnetic grid ruler arranged in a well, so that high-precision motor control and car leveling control can be realized.
Therefore, the utility model has the following beneficial effects: 1. a planetary gear speed reducing mechanism is added, so that the rotating speed of the permanent magnet synchronous motor is increased; 2. the outer diameter of the permanent magnet synchronous motor can be reduced, and the efficiency and the power density can be increased; 3. the motor, the planetary gear and the traction sheave are organically combined together through mechanical design, so that the rotating speed of the motor is improved, and the structure of the permanent magnet synchronous traction machine is more compact; 4. the internal space of the traction sheave is fully utilized, the planetary gear speed reducing mechanism and the permanent magnet synchronous motor are arranged in the traction sheave, so that the purpose of saving space can be achieved, and the axial size of the traction machine is shortened, so that the traction machine has more advantages in the application of a machine room-less elevator; 5. the traction sheave is used as a part of the shell, and the shell of the permanent magnet synchronous motor and the shell of the speed reducer are cancelled, so that the mechanism of the two-in-one traction machine is simpler and more compact; 6. the rotary variable sensor with low price is adopted, and the magnetic grid ruler arranged in the shaft is matched, so that high-precision motor control and car leveling control are realized through signal fitting of the two speed position sensors.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is another schematic structural view of the present invention;
in the figure: 1. a main shaft; 2. a first bearing; 3. a stressed end cap; 4. a planetary gear row; 4-1, sun gear; 4-2, planet wheels; 4-3, an outer gear ring; 5. a traction sheave; 6. a rotor assembly; 7. a stator assembly; 8. a rotary encoder; 9. a power line; 10. a control system; 11. a frequency converter; 12. a second bearing; 13. a third bearing; 14. a magnetic grid ruler; 15. a car; 16. a permanent magnet synchronous motor; 17. a casing.
Detailed Description
The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:
the embodiment is a special two-in-one permanent magnet synchronous traction machine for an elevator, and as shown in fig. 1, the two-in-one permanent magnet synchronous traction machine comprises a permanent magnet synchronous motor 16, a rotary encoder 8, a brake, a traction sheave 5 and a set of planetary gear reduction mechanism, wherein the traction sheave is not provided with a brake disc, a brake surface is an outer edge surface of an end cover, the structure is simpler, the end surface of the existing component is utilized, and a brake surface is not required to be designed independently. The outer side of the traction sheave is also provided with a stressed end cover 3, the stressed end cover and the traction sheave form an internal space, and the planetary gear speed reducing mechanism is arranged in the internal space; the permanent magnet synchronous motor is arranged inside the planetary gear speed reducing mechanism, so that the space is saved, and the structure is more compact. Meanwhile, the permanent magnet synchronous motor is not provided with a shell, so that the space is further saved. The permanent magnet synchronous motor is connected with the planetary gear speed reducing mechanism, the planetary gear speed reducing mechanism is connected with the traction sheave, the power of the permanent magnet synchronous motor is transmitted to the traction sheave through the speed reduction of the planetary gear, and the traction sheave drags the steel wire rope to drive the lift car to move up and down. The brake acts on the stress end cover to keep the elevator car static and unchanged in position when the elevator stops running.
The permanent magnet synchronous motor comprises a main shaft 1, a stator assembly 6 and a rotor assembly 7, an outer rotor structure is adopted, the stator assembly is sleeved on the main shaft, and an air gap is formed between the rotor assembly and the stator assembly. The main shaft is a main stressed part and is a fixed non-rotating shaft, a hole or a groove is formed in the main shaft and used for leading out a power line 9 of the rotary encoder, a power line of the stator assembly is also led out through the main shaft and is externally connected with a power supply of the frequency converter 11. The main shaft is further sleeved with a first bearing 2, and the first bearing is located between the stressed end cover and the main shaft. The power cord of stator module is connected with the power of external converter, turns into mechanical energy with the electric energy, provides rotating magnetic field for the rotor subassembly. The rotor assembly comprises a permanent magnet, a rotor magnetic yoke and the like, is driven to rotate by utilizing a rotating magnetic field generated by the stator assembly, and transmits torque to the planetary gear speed reducing mechanism.
The rotary encoder is a rotary variable sensor, is arranged on the rotor assembly and is used for feeding back speed and position signals of the rotor assembly.
The planetary gear speed reducing mechanism comprises a planetary gear row 4, the planetary gear row comprises a planetary gear 4-2, a sun gear 4-1 and an outer gear ring 4-3, the sun gear is connected with a rotor assembly, the sun gear is connected with the planetary gear, the planetary gear is connected with the outer gear ring, the outer gear ring is connected with a traction wheel, the planetary gear is fixed on a main shaft through a planetary carrier, the planetary gear can rotate, the planetary carrier cannot rotate, and the planetary gear can rotate but cannot revolve.
After the permanent magnet synchronous motor is electrified, the rotor of the rotor assembly can drive the sun gear of the planetary gear speed reducing mechanism to rotate when rotating, and the encoder is installed on the rotor and used for feeding back the speed and position signals of the rotor. The planet wheel is fixed on the main shaft through a gear carrier, and the sun wheel can drive the planet wheel to rotate when rotating and transmit the motion to the outer gear ring. The outer gear ring is connected with the traction sheave, so that the rotation of the permanent magnet synchronous motor is transmitted to the traction sheave after being reduced by the planetary gear reduction mechanism. The two sides of the traction sheave are provided with stressed end covers, and a first bearing is arranged between the stressed end covers and the main shaft. The stressed end cover can synchronously rotate along with the traction sheave. The outer side of the stressed end cover is processed and then used as a braking friction surface, and the brake acts on the stressed end cover. The traction sheave is provided with a rope groove which can drag the steel wire rope to drive the lift car to move up and down.
As shown in fig. 2, a magnetic scale 14 is installed in the hoistway, detects the position and speed of the car 15, and transmits the detected information to the control system 10, while the control system also receives speed and position signals of the motor rotor assembly transmitted by a rotary encoder installed on the permanent magnet synchronous motor. And the control system compares and fits the two groups of signals, and controls the permanent magnet synchronous motor to rotate through the frequency converter.
Another structural schematic diagram of the present invention is shown in fig. 3, and the housing 17 is the main stressed component of the present invention, and the present invention can be installed by fixing the housing on the guide rail or the bearing beam.
The stator assembly of the permanent magnet synchronous motor comprises a coil, a silicon steel sheet and the like and is fixed on the shell, a power line of the stator assembly penetrates through the shell and is connected into an external frequency converter, and a rotational magnetic field can be generated after the stator assembly is electrified to drive the rotor assembly to rotate. The rotor assembly comprises a permanent magnet and a rotor magnet yoke, the rotor assembly and a sun gear of the planetary gear speed reducing mechanism are in interference connection with each other and are provided with a positioning pin or a flat key, so that torque can be transmitted between the outer rotor and the sun gear, and relative displacement cannot be generated, so that the torque can be transmitted to the planetary gear speed reducing mechanism. Two second bearings 13 are arranged in the rotor, and the inner rings of the second bearings are arranged on the stress end covers.
The planet carrier of the planet wheel is fixed on the machine shell, the planet wheel is allowed to rotate but not revolve, and the outer gear ring is rigidly connected with the traction wheel. The outer gear ring of the planet gear and the traction sheave are in interference connection and are provided with the positioning pins, so that torque can be transmitted between the outer gear ring and the traction sheave, and relative displacement cannot be generated. The output torque of the rotor assembly is transmitted to the traction sheave through the planetary gear row.
The traction wheel is provided with a rope groove which can drag the steel wire rope to drive the lift car to move up and down. And a third bearing 14 is arranged in the stress end cover, and the inner ring of the third bearing is arranged on the stress end cover.
The rotary encoder is installed on the rotor assembly and feeds speed and position signals of the rotor assembly back to the control system, so that the control system can control the permanent magnet synchronous motor in real time.
The permanent magnet synchronous motor, the planetary gear speed reducing mechanism and the traction wheel are combined together through mechanical design, the planetary gear and the permanent magnet synchronous motor are arranged in the inner space of the traction wheel, the space is saved, and the axial size of the traction machine is shortened, so that the traction machine has more advantages in the application of a machine room-less elevator. Meanwhile, because a planetary gear speed reducing mechanism is added, the rotating speed of the permanent magnet synchronous motor is improved, the outer diameter of the permanent magnet synchronous motor can be reduced in design, and the efficiency and the power density can be increased. The efficiency of the permanent magnet synchronous motor body is above 92%, the transmission efficiency of the planetary gear is close to 98%, and the overall efficiency is above 90%.
The embodiments described above are merely two preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. The utility model provides a dedicated two unification permanent magnetism synchronous traction machines of elevator which characterized in that includes:
the control system comprises: the permanent magnet synchronous motor is controlled in real time through a magnetic grid ruler, a rotary encoder and a frequency converter;
permanent magnet synchronous machine: the planetary gear speed reducing mechanism is positioned in the planetary gear speed reducing mechanism and provides power to the planetary gear speed reducing mechanism to drive the planetary gear speed reducing mechanism to rotate;
planetary gear reduction mechanism: the permanent magnet synchronous motor is positioned in the traction sheave, reduces the speed of the power provided by the permanent magnet synchronous motor and transmits the power to the traction sheave;
a traction sheave: the power after the speed reduction of the planetary gear speed reducing mechanism is received, and the steel wire rope is dragged to drive the elevator car to move up and down.
2. The special two-in-one permanent magnet synchronous traction machine for the elevator according to claim 1, wherein the rotary encoder comprises: the control system is arranged on the permanent magnet synchronous motor and feeds back the rotating speed and the position of the permanent magnet synchronous motor to the control system.
3. The elevator-dedicated two-in-one permanent magnet synchronous traction machine according to claim 1, wherein the permanent magnet synchronous motor comprises:
a main shaft: the spindle is a fixed non-rotating shaft, and is provided with a hole or a groove for leading out a power line of the stator component and a power line of the rotary encoder;
a stator assembly: a power supply externally connected with the frequency converter and used for providing a rotating magnetic field for the rotor assembly;
a rotor assembly: the planetary gear speed reducing mechanism rotates under the action of the rotating magnetic field of the stator assembly and drives the planetary gear speed reducing mechanism to rotate.
4. The two-in-one permanent magnet synchronous traction machine special for elevators according to claim 1, wherein the planetary gear reduction mechanism comprises a planetary gear train, and the planetary gear train comprises:
a sun gear: receiving the rotary power from the rotor assembly and transmitting the rotary power to the planet wheels;
planet wheel: the planetary gear is connected with the main shaft through a planetary carrier, receives the rotary power from the sun gear and transmits the rotary power to the outer gear ring;
outer gear ring: receives the rotational power from the planetary gear and transmits the rotational power of the planetary gear to the traction sheave.
5. The two-in-one permanent magnet synchronous traction machine special for the elevator according to claim 1,
magnetic grid ruler: the device is arranged in an elevator shaft, and is used for detecting the speed and position signals of the elevator car in real time and feeding back the signals to a control system.
6. The two-in-one permanent magnet synchronous traction machine special for the elevator according to claim 4, further comprising stressed end covers, wherein the stressed end covers are installed on two sides of the traction sheave.
7. The special two-in-one permanent magnet synchronous traction machine for the elevator according to claim 1, further comprising a brake: acts on the stress end cover to keep the elevator car static and the position of the elevator car unchanged when the elevator stops running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404466.4A CN114598098A (en) | 2021-11-24 | 2021-11-24 | Two-in-one permanent magnet synchronous traction machine special for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404466.4A CN114598098A (en) | 2021-11-24 | 2021-11-24 | Two-in-one permanent magnet synchronous traction machine special for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114598098A true CN114598098A (en) | 2022-06-07 |
Family
ID=81804071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111404466.4A Pending CN114598098A (en) | 2021-11-24 | 2021-11-24 | Two-in-one permanent magnet synchronous traction machine special for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114598098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4362297A1 (en) * | 2022-09-16 | 2024-05-01 | Greenworks (Jiangsu) Co., Ltd. | Hub motor assembly and garden tool |
-
2021
- 2021-11-24 CN CN202111404466.4A patent/CN114598098A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4362297A1 (en) * | 2022-09-16 | 2024-05-01 | Greenworks (Jiangsu) Co., Ltd. | Hub motor assembly and garden tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6398685B1 (en) | Drive mechanism for a vehicle, especially a multilane electromobile | |
| US9016155B2 (en) | Power transmission unit for an electromotively operated drive and magneto-rheological clutch | |
| CN107922174A (en) | Crab component | |
| CN216549148U (en) | Two-in-one permanent magnet synchronous traction machine special for elevator | |
| CN114598098A (en) | Two-in-one permanent magnet synchronous traction machine special for elevator | |
| CN102730527A (en) | Magnetorheological elevator traction drive device | |
| CN107733155A (en) | A kind of wheel hub motor of built-in decelerator | |
| CN202030475U (en) | Hoisting driving device of a wire rope electric hoist | |
| CN107082348B (en) | Elevator driving system | |
| CN201813271U (en) | Electric barring device of hydraulic generator | |
| CN102205934A (en) | Hoist-driving device of steel-rope electric hoist | |
| CN1674413A (en) | Wheel hub electric machine | |
| CN204416866U (en) | A kind of permanent-magnet synchnorous gearless dragging machine | |
| CN2783611Y (en) | Hub motor | |
| CN216444853U (en) | Semi-direct-drive mine hoist of large permanent magnet speed reduction motor | |
| EP3246185B1 (en) | Direct drive system for electric car | |
| CN214177082U (en) | Wheelchair motor convenient to assembly | |
| CN105356640B (en) | Motor and elevator traction machine with the motor | |
| CN114671323A (en) | Elevator drawn by motor drive | |
| CN206908466U (en) | A kind of elevator hoist | |
| CN210150548U (en) | Traction machine | |
| CN201446877U (en) | Electric hub | |
| CN208761954U (en) | Flange form traction machine and its mounting structure | |
| EP3674459A1 (en) | A disc type motor transmission device for driving a circular knitting machine | |
| GB2590746A (en) | Golf cart with dual wheel being controlled at same speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |