Elevator Traction Driven by Electric Machine Drive Device

Abstract

The present invention discloses an elevator driven by a motor drive device, which uses a miniaturized motor drive device to output a large torque, and uses a traction sheave with a larger diameter and a traction rope with a larger diameter to increase the traction force of the traction rope, so as to meet the requirements of application scenarios with large load capacity and high-speed operation. Using a miniaturized motor drive device can not only reduce the occupied space, facilitate handling, installation and arrangement, and maintenance, but also bring more convenience to the manufacture of components, is conducive to saving raw materials, reducing the time for processing and assembly, and reducing the manufacturing cost of components.

Description

Technical Field

[0001] The present invention relates to an elevator, and particularly to an elevator driven by a motor drive device. Background Art

[0002] In applications where elevators are used to lift heavy loads and operate at high speeds, in order to meet the traction force requirements and ensure that the traction ropes have a sufficient service life, traction ropes with a larger diameter are usually used. According to the requirements of Clause 5.5.2 in Chinese Elevator Standard GB / T 7588.1-2020, the ratio (D / d) of the pitch diameter D of the traction rope wheels such as the traction sheave, pulley, and drum to the diameter d of the traction rope (suspension steel wire rope) should not be less than 40. Therefore, after using traction ropes with a larger diameter, traction rope wheels with a correspondingly larger pitch diameter need to be used, which requires the motor drive device to be able to output a larger torque.

[0003] In order to output a larger torque, the motor drive device can be achieved by increasing the size and volume of the motor. For example, Chinese Patent Gazette CN100335400C discloses a motor drive device, where the rotor of the motor directly drives the rope wheel. In order to output a larger torque, the diameter of the rotor mounting part is larger than that of the rope wheel, making the size and volume of the motor larger, and making the size and volume of the motor drive device large.

[0004] The large size and volume of the motor drive device increase the difficulty of manufacturing the components of the motor drive device. At the same time, the large-sized motor drive device occupies more space at the elevator use site, and also brings many difficulties to the handling, installation, and maintenance of the elevator site. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an elevator driven by a motor drive device, which can output a larger torque by using a miniaturized motor drive device, use a traction rope wheel with a larger diameter and a traction rope with a larger diameter to increase the traction force of the traction rope, and meet the needs of applications for lifting heavy loads and operating at high speeds. Using a miniaturized motor drive device can not only reduce the occupied space, facilitate handling, installation layout, and maintenance, but also bring more convenience to the manufacturing of components, be conducive to saving raw materials, reducing the processing and assembly time, and reducing the manufacturing cost of components.

[0006] To solve the above technical problem, an elevator driven by a motor drive device provided by the present invention has:

[0007] A lifting space 1001;

[0008] A car 1002 and a counterweight 1003 that move up and down in the lifting space;

[0009] A traction rope 1004 that suspends the car 1002 and the counterweight 1003;

[0010] The hoisting rope wheel 30 combined with the hoisting rope 1004 has a hoisting rope wheel pitch circle 310; the rotational movement of the hoisting rope wheel 30 causes the car 1002 and the counterweight 1003 to move up and down through the hoisting rope 1004;

[0011] The motor drive device 1 includes: a motor 10 and a gear assembly 2; the motor 10 drives the hoisting rope wheel 30 to perform a rotational movement through the gear assembly 2;

[0012] The projection of each transmission gear of the gear assembly 2 in the axial direction of the hoisting rope wheel 30 is arranged within the area enclosed by the projection of the hoisting rope wheel pitch circle 310 in the axial direction of the hoisting rope wheel 30.

[0013] Preferably, the axes of each transmission gear of the gear assembly 2 are parallel to the axis 320 of the hoisting rope wheel 30.

[0014] Preferably, the axes of each transmission gear of the gear assembly 2 are stationary relative to the axis 320 of the hoisting rope wheel 30 and are parallel to the axis 320 of the hoisting rope wheel 30.

[0015] Preferably, the gear assembly 2 has N transmission gears, and the axes of the N transmission gears are not in the same plane and are arranged in a three-dimensional layout in space, where N is an integer greater than 2.

[0016] Preferably, in the axial direction of the hoisting rope wheel 30, each transmission gear of the gear assembly 2 is located between the hoisting rope wheel 30 and the motor 10.

[0017] Preferably, each transmission gear of the gear assembly 2 is a helical gear.

[0018] Preferably, the motor drive device 1 further has a gearbox 20, and each transmission gear of the gear assembly 2 is arranged in the gearbox 20, and the gearbox 20 supports the rotation of each transmission gear of the gear assembly 2.

[0019] Preferably, the gear assembly 2 includes an input transmission gear 210, an output transmission gear 220, a first intermediate transmission gear 230, and a second intermediate transmission gear 231;

[0020] The input transmission gear 210 is provided with an input rotating shaft 21, and the input rotating shaft 21 is provided with a first bearing 212 and a second bearing 213;

[0021] The output transmission gear 220 is provided with an output rotating shaft 22, and the output rotating shaft 22 is provided with a third bearing 222 and a fourth bearing 223;

[0022] The first intermediate transmission gear 230, the second intermediate transmission gear 231, and the intermediate transmission rotating shaft 23 are coaxially connected and rotate integrally;

[0023] The intermediate transmission rotating shaft 23 is provided with a fifth bearing 233 and a sixth bearing 234;

[0024] The gearbox 20 rotatably supports each rotating shaft through the bearings of each rotating shaft.

[0025] Preferably, the motor 10 has: a stationary part 11 and a rotating part 12; the rotating part 12 of the motor is coaxially connected and rotates integrally with the input transmission gear 210 of the gear assembly 2, the traction rope wheel 30 is coaxially connected and rotates integrally with the output transmission gear 220 of the gear assembly 2, and the rotational speed of the traction rope wheel 30 is less than the rotational speed of the rotating part 12 of the motor.

[0026] Preferably, the number of teeth of the input transmission gear 210 is less than the number of teeth of the transmission gear meshing with it, and the number of teeth of the output transmission gear 220 is greater than the number of teeth of the transmission gear meshing with it.

[0027] Preferably, the projection of the rotating part 12 of the motor in the axial direction of the traction rope wheel 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope wheel in the axial direction of the traction rope wheel 30.

[0028] Preferably, the stationary part 11 of the motor has a coil 112, and the projection of the coil 112 in the axial direction of the traction rope wheel 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope wheel in the axial direction of the traction rope wheel 30.

[0029] Preferably, the motor drive device 1 has a braking device 40, and the braking device 40 has: a brake stationary part 41, a brake moving part 42, and a brake disc 43.

[0030] Preferably, the brake disc 43 is coaxially connected and rotates integrally with the output transmission gear 220, and the projection of the brake disc 43 in the axial direction of the traction rope wheel 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope wheel in the axial direction of the traction rope wheel 30.

[0031] Preferably, the brake disc 43 is coaxially connected and rotates integrally with the rotating part 12 of the motor, and the projection of the brake disc 43 in the axial direction of the traction rope wheel 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope wheel in the axial direction of the traction rope wheel 30.

[0032] To solve the above technical problems, another elevator driven by a motor drive device provided by the present invention has:

[0033] A lifting space 1001;

[0034] A car 1002 and a counterweight 1003 that move up and down within a lifting space;

[0035] A traction rope 1004 that suspends the car 1002 and the counterweight 1003;

[0036] A traction sheave 30 combined with the traction rope 1004 has a traction sheave pitch circle 310; the rotational movement of the traction sheave 30 causes the car 1002 and the counterweight 1003 to move up and down through the traction rope 1004;

[0037] An electric motor drive device 1, having: an electric motor 10, a gear assembly 2; the electric motor 10 drives the traction sheave 30 to perform a rotational movement through the gear assembly 2;

[0038] The axes of the respective transmission gears of the gear assembly 2 are parallel to the axis 320 of the traction sheave 30, and the projections of the axes of the respective transmission gears in the axial direction of the traction sheave 30 are arranged within the region enclosed by the projection of the traction sheave pitch circle 310 in the axial direction of the traction sheave 30.

[0039] Preferably, the axes of the respective transmission gears of the gear assembly 2 are all stationary relative to the axis 320 of the traction sheave 30.

[0040] Preferably, the gear assembly 2 has N transmission gears, and the axes of the N transmission gears are not in the same plane and are arranged in a three-dimensional layout in space, where N is an integer greater than 2.

[0041] Preferably, along the axial direction of the traction sheave 30, the respective transmission gears of the gear assembly 2 are all located between the traction sheave 30 and the electric motor 10.

[0042] Preferably, the respective transmission gears of the gear assembly 2 are helical gears.

[0043] Preferably, it further has a gearbox 20, and the respective transmission gears of the gear assembly 2 are arranged in the gearbox 20, and the gearbox 20 supports the rotation of the respective transmission gears of the gear assembly 2.

[0044] Preferably, the gear assembly 2 includes an input transmission gear 210, an output transmission gear 220, a first intermediate transmission gear 230, and a second intermediate transmission gear 231;

[0045] The input transmission gear 210 is provided with an input rotating shaft 21, and the input rotating shaft 21 is provided with a first bearing 212 and a second bearing 213;

[0046] The output transmission gear 220 is provided with an output rotating shaft 22, and the output rotating shaft 22 is provided with a third bearing 222 and a fourth bearing 223;

[0047] The first intermediate drive gear 230, the second intermediate drive gear 231, and the intermediate drive rotating shaft 23 are coaxially connected and rotate integrally;

[0048] The intermediate drive rotating shaft 23 is provided with a fifth bearing 233 and a sixth bearing 234;

[0049] The gearbox 20 rotatably supports each rotating shaft through the bearings of each rotating shaft.

[0050] Preferably, the motor 10 has a stationary part 11 and a rotating part 12. The rotating part 12 of the motor is coaxially connected and rotates integrally with the input drive gear 210 of the gear assembly 2. The traction rope pulley 30 is coaxially connected and rotates integrally with the output drive gear 220 of the gear assembly 2. The rotational speed of the traction rope pulley 30 is less than the rotational speed of the rotating part 12 of the motor.

[0051] Preferably, the number of teeth of the input drive gear 210 is less than the number of teeth of the drive gear meshing with it, and the number of teeth of the output drive gear 220 is greater than the number of teeth of the drive gear meshing with it.

[0052] Preferably, the projection of the rotating part 12 of the motor in the axial direction of the traction rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope pulley in the axial direction of the traction rope pulley 30.

[0053] Preferably, the stationary part 11 of the motor has a coil 112. The projection of the coil 112 in the axial direction of the traction rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope pulley in the axial direction of the traction rope pulley 30.

[0054] Preferably, the motor drive device 1 has a braking device 40. The braking device 40 has a brake stationary part 41, a brake moving part 42, and a brake disc 43.

[0055] Preferably, the brake disc 43 is coaxially connected and rotates integrally with the rotating part 12 of the motor. The projection of the brake disc 43 in the axial direction of the traction rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope pulley in the axial direction of the traction rope pulley 30.

[0056] Preferably, the brake disc 43 is coaxially connected and rotates integrally with the output drive gear 220. The projection of the brake disc 43 in the axial direction of the traction rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope pulley in the axial direction of the traction rope pulley 30.

[0057] The elevator towed by the motor drive device of the present invention can output a relatively large torque by using a miniaturized motor drive device. It can use a traction sheave with a relatively large diameter and a traction rope with a relatively large diameter to increase the traction force of the traction rope and ensure that the traction rope has a sufficient service life to meet the requirements of applications for lifting large loads and running at high speeds, while meeting the requirement of the Chinese elevator standard GB / T 7588.1-2020 that the ratio (D / d) of the pitch diameter of the traction sheave to the diameter of the traction rope should not be less than 40. The miniaturized motor drive device brings more convenience to the production of components, is conducive to saving raw materials, reducing the time for processing and assembly, and lowering the production cost of components. The miniaturized motor drive device reduces the occupied civil engineering size space and also brings more convenience to the handling, installation, and maintenance of the elevator on-site. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 is a perspective schematic view of an embodiment of an elevator towed by the motor drive device of the present invention;

[0060] Figure 2 is Figure 1 a perspective schematic view of the motor, gear assembly, and traction sheave of the motor drive device;

[0061] Figure 3 is Figure 1 a side view of the motor, gear assembly, traction sheave, and traction rope of the motor drive device;

[0062] Figure 4 is Figure 3 a C-C cross-sectional view;

[0063] Figure 5 is Figure 1 a perspective external view of the motor drive device and the traction sheave;

[0064] Figure 6 is Figure 1 a rear view of the motor drive device and the traction sheave;

[0065] Figure 7 is Figure 1 a side view of the motor drive device and the traction sheave;

[0066] Figure 8 is Figure 7 an A-A cross-sectional view;

[0067] Figure 9 is Figure 7 the B-B sectional view of

[0068] Figure 10 is Figure 5 the perspective schematic view of the motor drive device of

[0069] Figure 11 is Figure 5 the perspective schematic view of the mounting bracket of the motor drive device of

[0070] Figure 12 is the perspective external view of another embodiment of the motor drive device and the traction rope wheel of the present invention;

[0071] Figure 13 is Figure 12 the side view of

[0072] Figure 14 is Figure 13 the A-A sectional view of

[0073] The reference numerals are explained as follows:

[0074] 1 Motor drive device; 2 Gear assembly; 10 Motor; 11 Stationary part of the motor; 12 Rotating part of the motor; 20 Gearbox; 21 Input rotating shaft; 22 Output rotating shaft; 23 Intermediate transmission rotating shaft; 30 Traction rope wheel; 40 Braking device; 41 Stationary part of the brake; 41a Inner hole of the stationary part of the brake; 42 Moving part of the brake; 43 Brake disc; 50 Sensor; 51 Stationary part of the sensor; 51a Body part of the stationary part of the sensor; 51b Mounting part of the stationary part of the sensor; 52 Rotating part of the sensor; 111 Motor housing; 112 Coil; 113 Motor end cover; 113a Inner hole of the motor end cover; 210 Input transmission gear; 211 Axis of the input rotating shaft; 212 First bearing; 213 Second bearing; 220 Output transmission gear; 221 Axis of the output rotating shaft; 222 Third bearing; 223 Fourth bearing; 230 First intermediate transmission gear; 231 Second intermediate transmission gear; 232 Axis of the transmission rotating shaft; 233 Fifth bearing; 234 Sixth bearing; 310 Pitch circle of the traction rope wheel; 320 Axis of the traction rope wheel; 1000 Elevator; 1001 Lifting space; 1002 Car; 1003 Counterweight; 1004 Traction rope; 1005 First car idler pulley; 1006 Second car idler pulley; 1007 Counterweight idler pulley; 1008 Traction rope end connection device on the car side; 1009 Traction rope end connection device on the counterweight side; 1010 Mounting bracket; D Pitch circle diameter of the traction rope wheel; d Traction rope diameter. Detailed implementation manners

[0075] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0076] Embodiment 1

[0077] As Figure 1-11 shown, an elevator driven by a motor drive device has:

[0078] A hoisting space 1001;

[0079] A car 1002 and a counterweight 1003 that move up and down in the hoisting space;

[0080] A hoisting rope 1004 that suspends the car 1002 and the counterweight 1003;

[0081] A hoisting rope sheave 30 combined with the hoisting rope 1004 has a hoisting rope sheave pitch circle 310; the rotational movement of the hoisting rope sheave 30 causes the car 1002 and the counterweight 1003 to move up and down through the hoisting rope 1004;

[0082] As Figure 2 shown, the motor drive device 1 has: a motor 10 and a gear assembly 2; the motor 10 drives the hoisting rope sheave 30 to perform a rotational movement through the gear assembly 2;

[0083] As Figure 2-4 shown, the diameter of the hoisting rope sheave pitch circle 310 is D, and the diameter of the hoisting rope 1004 is d. Preferably, the diameter ratio D / d should not be less than 40. The hoisting rope 1004 converts the rotational movement of the hoisting rope sheave 30 into the up and down movement of the car 1002 and the counterweight 1003 through the combination with the hoisting rope sheave 30.

[0084] As Figure 2-8 shown, the projections of the respective transmission gears of the gear assembly 2 in the axial direction of the hoisting rope sheave 30 are arranged within the area enclosed by the projection of the hoisting rope sheave pitch circle 310 in the axial direction of the hoisting rope sheave 30.

[0085] Preferably, as Figure 2 、 Figure 8 shown, the axes of the respective transmission gears of the gear assembly 2 are all stationary relative to the axis 320 of the hoisting rope sheave 30 and are parallel to the axis 320 of the hoisting rope sheave 30.

[0086] Preferably, the gear assembly 2 has N transmission gears, and the axes of the N transmission gears are not in the same plane and are arranged in a three-dimensional manner in space, where N is an integer greater than 2.

[0087] Preferably, each transmission gear of the gear assembly 2 includes an input transmission gear 210, an output transmission gear 220, a first intermediate transmission gear 230, and a second intermediate transmission gear 231

[0088] Preferably, the axis 211 of the input transmission gear 210, the axis 221 of the output transmission gear 220, and the axes 232 of the first intermediate transmission gear 230 and the second intermediate transmission gear 231 of the gear assembly 2 are not in the same plane and are arranged in a three-dimensional manner in space.

[0089] As Figure 2 、 Figure 6 、 Figure 8 shown, along the axial direction of the traction rope wheel 30, each transmission gear of the gear assembly 2 is located between the traction rope wheel 30 and the motor 10.

[0090] Preferably, each transmission gear of the gear assembly 2 is a helical gear.

[0091] Preferably, the motor drive device 1 further has a gearbox 20, and each transmission gear of the gear assembly 2 is arranged in the gearbox 20, and the gearbox 20 supports the rotation of each transmission gear of the gear assembly 2.

[0092] Preferably, as Figure 8 、 Figure 10 shown, the gear assembly 2 includes an input transmission gear 210, an output transmission gear 220, a first intermediate transmission gear 230, and a second intermediate transmission gear 231;

[0093] The input transmission gear 210 is provided with an input rotating shaft 21, and the input rotating shaft 21 is provided with a first bearing 212 and a second bearing 213;

[0094] The output transmission gear 220 is provided with an output rotating shaft 22, and the output rotating shaft 22 is provided with a third bearing 222 and a fourth bearing 223;

[0095] The first intermediate transmission gear 230, the second intermediate transmission gear 231, and the intermediate transmission rotating shaft 23 are coaxially connected and rotate integrally;

[0096] The intermediate transmission rotating shaft 23 is provided with a fifth bearing 233 and a sixth bearing 234;

[0097] The gearbox 20 rotatably supports each rotating shaft through the bearings of each rotating shaft.

[0098] The elevator towed by the motor drive device of this embodiment realizes a compact layout of the gear position by reasonably arranging the motor, the gear assembly, and the tow rope pulley, adopting a three-dimensional layout for the gear assembly to reduce the gear layout space, and by using helical gear transmission, which is beneficial for the motor drive device to output a stable and large torque and is beneficial for the miniaturization of the motor drive device. The miniaturized motor drive device can not only reduce the occupied space, facilitate handling, installation, layout, and maintenance, but also bring more convenience to the production of components, is beneficial for saving raw materials, reducing the processing and assembly time, and reducing the production cost of components.

[0099] Embodiment 2

[0100] As Figure 6 、 Figure 8 shown, based on the elevator towed by the motor drive device of Embodiment 1, the motor 10 has: a stationary part 11 and a rotating part 12; the rotating part 12 of the motor is coaxially connected and integrally rotated with the input transmission gear 210 of the gear assembly 2, and the tow rope pulley 30 is coaxially connected and integrally rotated with the output transmission gear 220 of the gear assembly 2, and the rotational speed of the tow rope pulley 30 is less than the rotational speed of the rotating part 12 of the motor.

[0101] Preferably, the number of teeth of the input transmission gear 210 is less than the number of teeth of the transmission gear meshing with it, and the number of teeth of the output transmission gear 220 is greater than the number of teeth of the transmission gear meshing with it.

[0102] Preferably, the projection of the rotating part 12 of the motor in the axial direction of the tow rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the tow rope pulley 30 in the axial direction of the tow rope pulley 30.

[0103] Preferably, the stationary part 11 of the motor has a coil 112, and the projection of the coil 112 in the axial direction of the tow rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the tow rope pulley 30 in the axial direction of the tow rope pulley 30.

[0104] Preferably, the stationary part 11 of the motor has a motor housing 111, and the motor housing 111 and the gearbox 20 are integrally designed.

[0105] When the coil 112 is energized, the stationary part 11 of the motor generates an electromagnetic field to drive the rotating part 12 of the motor, and the output torque is transmitted to the tow rope pulley 30 through the input rotating shaft 21, the input transmission gear 210, the first intermediate transmission gear 230, the intermediate transmission rotating shaft 23, the second intermediate transmission gear 231, the output transmission gear 220, and the output rotating shaft 22.

[0106] The elevator towed by the motor drive device of this embodiment, by reasonably arranging the connection between the motor and the gear assembly, the output torque of the motor can be increased after being transmitted by the gear assembly, which is beneficial to miniaturize the size and volume of the motor, and further miniaturize the motor drive device.

[0107] Embodiment Three

[0108] As Figure 5-8 shown, for the elevator towed by the motor drive device based on Embodiment Two, the motor drive device 1 has a braking device 40, and the braking device 40 has: a brake stationary part 41, a brake moving part 42, and a brake disc 43.

[0109] Preferably, the brake disc 43 is coaxially connected and integrally rotated with the output transmission gear 220, and the projection of the brake disc 43 in the axial direction of the traction rope wheel 30 is arranged in the area surrounded by the projection of the traction rope wheel pitch circle 310 in the axial direction of the traction rope wheel 30.

[0110] Preferably, the brake disc 43 is connected to the output rotating shaft 22 and rotates coaxially.

[0111] When the braking device brakes, under the action of the spring pushing force, the brake moving part 42 presses against the brake disc 43, and the braking force is transmitted to the traction rope wheel 30 through the output rotating shaft 22.

[0112] Embodiment Four

[0113] As Figure 6 、 Figure 8 shown, for the elevator towed by the motor drive device based on Embodiment Two, the motor drive device 1 further has a sensor 50 for feedback the rotation information of the motor. The sensor 50 has a stationary part 51 and a rotating part 52, and the stationary part 51 of the sensor has a body part 51a and a mounting part 51b.

[0114] Preferably, the stationary part 11 of the motor has a motor end cover 113. The mounting part 51b of the stationary part of the sensor is connected to the motor end cover 113. The body part 51a of the stationary part of the sensor is arranged inside the inner hole 113a of the motor end cover, and the rotating part 52 of the sensor is connected to the input rotating shaft 21.

[0115] When the rotating part 12 of the motor rotates, the rotation information is transmitted to the sensor 50 through the input rotating shaft 21 and the rotating part 52 of the sensor, and the rotation information is fed back to the elevator control system (not shown) through the sensor 50.

[0116] Embodiment Five

[0117] The differences between this embodiment and Embodiment Three and Embodiment Four are as follows:

[0118] As Figure 12-14 , the brake disc 43 is coaxially connected to the rotating part 12 of the motor and rotates integrally. The projection of the brake disc 43 in the axial direction of the traction rope pulley 30 is arranged within the area surrounded by the projection of the pitch circle 310 of the traction rope pulley in the axial direction of the traction rope pulley 30.

[0119] Preferably, the brake disc 43 is connected to the input rotating shaft 21 and rotates coaxially.

[0120] The stationary part 51 of the sensor is connected to the stationary part 41 of the brake.

[0121] The mounting part 51b of the stationary part of the sensor is connected to the stationary part 41 of the brake, and the body part 51a of the stationary part of the sensor is arranged inside the inner hole 41a of the stationary part of the brake.

[0122] When the braking device brakes, under the action of the spring pushing force, the moving part 42 of the brake presses against the brake disc 43, and the braking force is transmitted to the traction rope pulley 30 through the input rotating shaft 21, the input transmission gear 210, the first intermediate transmission gear 230, the intermediate transmission rotating shaft 23, the second intermediate transmission gear 231, the output transmission gear 220, and the output rotating shaft 22.

[0123] For the elevator towed by the motor drive device of this embodiment, by reasonably arranging the connection of the braking device with the motor and the gear assembly, the output torque of the braking device can be increased after being transmitted by the gear assembly, which is beneficial to miniaturize the size and volume of the braking device and further miniaturize the motor drive device.

[0124] Embodiment Six

[0125] As Figure 1 , Figure 11 shown, for the elevator towed by the motor drive device based on Embodiment One, the elevator 1000 towed by the motor drive device further has

[0126] a first car sheave 1005 and a second car sheave 1006;

[0127] a counterweight sheave 1007;

[0128] a traction rope end connection device 1008 on the car side;

[0129] a traction rope end connection device 1009 on the counterweight side;

[0130] Preferably, there is also a mounting bracket 1010 that is connected to the gearbox 20 of the motor drive device 1 and supports the motor drive device 1.

[0131] For the elevator towed by the motor drive device of this embodiment, by providing a miniaturized mounting bracket to support the motor drive device, the space occupied at the elevator use site can be reduced.

[0132] Embodiment Seven

[0133] The difference between this embodiment and Embodiment One lies in:

[0134] As Figure 1-11 shown, the axes of the respective transmission gears of the gear assembly 2 are parallel to the axis 320 of the traction rope wheel 30, and the projections of the axes of the respective transmission gears in the axial direction of the traction rope wheel 30 are arranged within the region enclosed by the projection of the pitch circle 310 of the traction rope wheel in the axial direction of the traction rope wheel 30.

[0135] For the elevator towed by the motor drive device of this embodiment, through further reasonable configuration of the respective transmission gears of the gear assembly and miniaturization design of the transmission gears, etc., the motor drive device can be further miniaturized.

[0136] Embodiments Two to Six can each be combined with this embodiment to form new embodiments, which will not be elaborated here.

[0137] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An elevator driven by an electric motor drive device, comprising: A hoistway space (1001); A car (1002) and a counterweight (1003) that move up and down within the hoistway space; A hoisting rope (1004) that suspends the car (1002) and the counterweight (1003); A hoisting rope sheave (30) coupled to the hoisting rope (1004) has a hoisting rope sheave pitch circle (310); the rotational movement of the hoisting rope sheave (30) causes the car (1002) and the counterweight (1003) to move up and down through the hoisting rope (1004); An electric motor drive device (1), comprising: an electric motor (10), a gear assembly (2); the electric motor (10) drives the hoisting rope sheave (30) to perform a rotational movement through the meshing transmission of the gears of the gear assembly (2); Characterized in that, The projections of the respective transmission gears of the gear assembly (2) in the axial direction of the hoisting rope sheave (30) are arranged within the area enclosed by the projection of the hoisting rope sheave pitch circle (310) in the axial direction of the hoisting rope sheave (30); The axes of the respective transmission gears of the gear assembly (2) are stationary relative to the axis (320) of the hoisting rope sheave (30) and are parallel to the axis (320) of the hoisting rope sheave (30).

2. The elevator driven by the electric motor drive device according to claim 1, wherein The gear assembly (2) has N transmission gears, and the axes of the N transmission gears are not in the same plane and are arranged in a three-dimensional manner in space, where N is an integer greater than 2.

3. The elevator driven by the electric motor drive device according to claim 2, wherein In the axial direction of the hoisting rope sheave (30), the respective transmission gears of the gear assembly (2) are all located between the hoisting rope sheave (30) and the electric motor (10).

4. The elevator driven by the electric motor drive device according to claim 3, wherein The respective transmission gears of the gear assembly (2) are helical gears.

5. The elevator driven by the electric motor drive device according to claim 3, wherein The electric motor drive device (1) further has a gearbox (20), and the respective transmission gears of the gear assembly (2) are arranged within the gearbox (20), and the gearbox (20) supports the rotation of the respective transmission gears of the gear assembly (2).

6. The elevator driven by the electric motor drive device according to claim 5, wherein The gear assembly (2) includes an input transmission gear (210), an output transmission gear (220), a first intermediate transmission gear (230), and a second intermediate transmission gear (231); The input transmission gear (210) is provided with an input rotating shaft (21), and the input rotating shaft (21) is provided with a first bearing (212) and a second bearing (213); The output transmission gear (220) is provided with an output rotating shaft (22), and the output rotating shaft (22) has a third bearing (222) and a fourth bearing (223); The first intermediate transmission gear (230), the second intermediate transmission gear (231), and the intermediate transmission rotating shaft (23) are coaxially connected and rotate integrally; The intermediate transmission rotating shaft (23) is provided with a fifth bearing (233) and a sixth bearing (234); The gearbox (20) rotatably supports each rotating shaft through the bearings of each rotating shaft respectively.

7. The elevator traction driven by the motor drive device according to claim 3, characterized in that the motor (10) has: a stationary part (11) and a rotating part (12); the rotating part (12) of the motor is coaxially connected and integrally rotated with the input transmission gear (210) of the gear assembly (2), and the traction sheave (30) is coaxially connected and integrally rotated with the output transmission gear (220) of the gear assembly (2), and the rotational speed of the traction sheave (30) is less than the rotational speed of the rotating part (12) of the motor.

8. The elevator traction driven by the motor drive device according to claim 7, characterized in that the number of teeth of the input transmission gear (210) is less than the number of teeth of the transmission gear meshing with it, and the number of teeth of the output transmission gear (220) is greater than the number of teeth of the transmission gear meshing with it.

9. The elevator traction driven by the motor drive device according to claim 7, characterized in that the projection of the rotating part (12) of the motor in the axial direction of the traction sheave (30) is arranged within the area surrounded by the projection of the traction sheave pitch circle (310) in the axial direction of the traction sheave (30).

10. The elevator traction driven by the motor drive device according to claim 7, characterized in that the stationary part (11) of the motor has a coil (112), and the projection of the coil (112) in the axial direction of the traction sheave (30) is arranged within the area surrounded by the projection of the traction sheave pitch circle (310) in the axial direction of the traction sheave (30).

11. The elevator traction driven by the motor drive device according to claim 7, characterized in that the motor drive device (1) has a braking device (40), and the braking device (40) has: a brake stationary part (41), a brake moving part (42), and a brake disc (43).

12. The elevator traction driven by the motor drive device according to claim 11, characterized in that the brake disc (43) is coaxially connected and integrally rotated with the output transmission gear (220), and the projection of the brake disc (43) in the axial direction of the traction sheave (30) is arranged within the area surrounded by the projection of the traction sheave pitch circle (310) in the axial direction of the traction sheave (30).

13. The elevator traction driven by the motor drive device according to claim 11, characterized in that the brake disc (43) is coaxially connected and integrally rotated with the rotating part (12) of the motor, and the projection of the brake disc (43) in the axial direction of the traction sheave (30) is arranged within the area surrounded by the projection of the traction sheave pitch circle (310) in the axial direction of the traction sheave (30).

14. An elevator traction driven by a motor drive device, having: a hoistway (1001); a car (1002) and a counterweight (1003) that move up and down in the hoistway; a traction rope (1004) that suspends the car (1002) and the counterweight (1003); The traction sheave (30) combined with the traction rope (1004) has a traction sheave pitch circle (310); the rotational movement of the traction sheave (30) causes the car (1002) and the counterweight (1003) to move up and down through the traction rope (1004). The motor drive device (1) includes: a motor (10) and a gear assembly (2); the motor (10) drives the traction sheave (30) to perform a rotational movement through the meshing transmission of the gears of the gear assembly (2). It is characterized in that The axes of the respective transmission gears of the gear assembly (2) are parallel to the axis (320) of the traction sheave (30), and the projections of the axes of the respective transmission gears in the axial direction of the traction sheave (30) are arranged within the area enclosed by the projection of the traction sheave pitch circle (310) in the axial direction of the traction sheave (30). The axes of the respective transmission gears of the gear assembly (2) are all stationary relative to the axis (320) of the traction sheave (30).

15. The elevator tractioned by the motor drive device according to claim 14, characterized in that The gear assembly (2) has N transmission gears, and the axes of the N transmission gears are not in the same plane and are arranged in a three-dimensional manner in space, where N is an integer greater than 2.

16. The elevator tractioned by the motor drive device according to claim 15, characterized in that In the axial direction of the traction sheave (30), the respective transmission gears of the gear assembly (2) are all located between the traction sheave (30) and the motor (10).

17. The elevator tractioned by the motor drive device according to claim 16, characterized in that The respective transmission gears of the gear assembly (2) are helical gears.

18. The elevator tractioned by the motor drive device according to claim 16, characterized in that The motor drive device (1) further has a gearbox (20), and the respective transmission gears of the gear assembly (2) are arranged in the gearbox (20), and the gearbox (20) supports the rotation of the respective transmission gears of the gear assembly (2).

19. The elevator tractioned by the motor drive device according to claim 18, characterized in that The gear assembly (2) includes an input transmission gear (210), an output transmission gear (220), a first intermediate transmission gear (230) and a second intermediate transmission gear (231). The input transmission gear (210) is provided with an input rotating shaft (21), and the input rotating shaft (21) is provided with a first bearing (212) and a second bearing (213). The output transmission gear (220) is provided with an output rotating shaft (22), and the output rotating shaft (22) has a third bearing (222) and a fourth bearing (223). The first intermediate transmission gear (230), the second intermediate transmission gear (231) and the intermediate transmission rotating shaft (23) are coaxially connected and rotate integrally. The intermediate transmission rotating shaft (23) is provided with a fifth bearing (233) and a sixth bearing (234). The gearbox (20) supports the rotation of each rotating shaft through the bearings of each rotating shaft respectively.

20. The elevator tractioned by the motor drive device according to claim 16, characterized in that The motor (10) has: a stationary part (11) and a rotating part (12); the rotating part (12) of the motor is coaxially connected and integrally rotated with the input transmission gear (210) of the gear assembly (2), the traction rope wheel (30) is coaxially connected and integrally rotated with the output transmission gear (220) of the gear assembly (2), and the rotational speed of the traction rope wheel (30) is less than the rotational speed of the rotating part (12) of the motor.

21. The elevator towed by the motor drive device according to claim 20, characterized in that the number of teeth of the input transmission gear (210) is less than the number of teeth of the transmission gear meshing therewith, and the number of teeth of the output transmission gear (220) is greater than the number of teeth of the transmission gear meshing therewith.

22. The elevator towed by the motor drive device according to claim 20, characterized in that the projection of the rotating part (12) of the motor in the axial direction of the traction rope wheel (30) is arranged within the area surrounded by the projection of the traction rope wheel pitch circle (310) in the axial direction of the traction rope wheel (30).

23. The elevator towed by the motor drive device according to claim 20, characterized in that the stationary part (11) of the motor has a coil (112), and the projection of the coil (112) in the axial direction of the traction rope wheel (30) is arranged within the area surrounded by the projection of the traction rope wheel pitch circle (310) in the axial direction of the traction rope wheel (30).

24. The elevator towed by the motor drive device according to claim 20, characterized in that the motor drive device (1) has a braking device (40), and the braking device (40) has: a brake stationary part (41), a brake moving part (42), and a brake disc (43).

25. The elevator towed by the motor drive device according to claim 24, characterized in that the brake disc (43) is coaxially connected and integrally rotated with the output transmission gear (220), and the projection of the brake disc (43) in the axial direction of the traction rope wheel (30) is arranged within the area surrounded by the projection of the traction rope wheel pitch circle (310) in the axial direction of the traction rope wheel (30).

26. The elevator towed by the motor drive device according to claim 24, characterized in that the brake disc (43) is coaxially connected and integrally rotated with the rotating part (12) of the motor, and the projection of the brake disc (43) in the axial direction of the traction rope wheel (30) is arranged within the area surrounded by the projection of the traction rope wheel pitch circle (310) in the axial direction of the traction rope wheel (30).

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