Machine-room-less elevator

Abstract

The present invention discloses a machine-roomless elevator. For the application scenario of using two machine-roomless elevators, the top spaces thereof are opened up, and the first motor driving device and the first traction sheave, as well as the second motor driving device and the second traction sheave, are all arranged in the opened-up top space, and each occupies the common extended space of the hoistway wall, or each occupies the common extended space of the hoistway wall and a part of the extended space of the other hoistway. In this way, not only can the cross-sectional area space of the hoistway occupied by the two motor driving devices and the traction sheaves be generally reduced, but also when one of the motor driving devices fails, elevator maintenance personnel can approach the faulty motor driving device by operating or moving another normal elevator, and perform operations such as maintenance or component replacement, which can bring more operation convenience to elevator maintenance personnel and reduce operation safety risks.

Description

Technical Field

[0001] The present invention relates to the field of elevators, and particularly to a machine-roomless elevator. Background Art

[0002] In order to meet the transportation capacity requirements, many high-rise buildings are equipped with more than two elevators. At the same time, in order to save building space, many choose machine-roomless elevators. For the application scenario of using two machine-roomless elevators, the prior art usually adopts a scheme of arranging two single machine-roomless elevators independently of each other. Specifically: the two single machine-roomless elevators respectively have their own independent hoistways, carriages, counterweights, traction ropes, traction rope wheels, motor drive devices, etc. The motor drive device and the traction rope wheel of each machine-roomless elevator are arranged in the hoistway space of its own. This arrangement has the following deficiencies:

[0003] First, the motor drive device and the traction rope wheel often have relatively large sizes and volumes. Especially in the application scenarios of lifting large load weights and running at high speeds, a hoistway with a relatively large cross-sectional area is required, increasing the construction cost.

[0004] Second, if the motor drive device of one of the machine-roomless elevators fails and needs maintenance or part replacement, etc., since the carriage of this faulty elevator cannot operate or move normally and safely at this time, it brings a lot of inconvenience and safety risks to the elevator maintenance personnel to approach the faulty motor drive device and perform operations such as maintenance or part replacement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a machine-roomless elevator. For the application scenario of using two machine-roomless elevators, it can generally reduce the cross-sectional area space of the hoistway occupied by the two motor drive devices and the traction rope wheels. Moreover, when one of the motor drive devices fails, the elevator maintenance personnel can approach the faulty motor drive device by operating or moving the other normal elevator, and complete the maintenance or part replacement operation of the faulty motor drive device on the car top of the normal elevator car, which can bring more operation convenience to the elevator maintenance personnel and reduce the operation safety risks.

[0006] To solve the above technical problems, an inorganic room elevator provided by the present invention includes at least a first lift shaft and a second lift shaft arranged in parallel; a first car and a first counterweight that interactively lift along a first car guide rail and a first counterweight guide rail respectively within the first lift shaft; a second car and a second counterweight that interactively lift along a second car guide rail and a second counterweight guide rail respectively within the second lift shaft; a first traction rope suspends the first car and the first counterweight; a second traction rope suspends the second car and the second counterweight; a first motor drive device drives a first traction rope wheel to rotate; the rotational movement of the first traction rope wheel causes the first car and the first counterweight to interactively lift through the first traction rope; a second motor drive device drives a second traction rope wheel to rotate; the rotational movement of the second traction rope wheel causes the second car and the second counterweight to interactively lift through the second traction rope; the top spaces of the first lift shaft and the second lift shaft are opened up, and the first motor drive device and the first traction rope wheel, the second motor drive device and the second traction rope wheel are all arranged in the opened-up top space, and each occupies the space of a common well wall extension section, or each occupies the space of a common well wall extension section and a part of the well extension section of the other well.

[0007] Preferably, the length of the first motor drive device and the first traction rope wheel exceeds the thickness of the first counterweight, or the length of the second motor drive device and the second traction rope wheel exceeds the thickness of the second counterweight.

[0008] Preferably, the lift shaft spaces required for the lifting paths of the first counterweight and the second counterweight are arranged within the space between the lift shaft space required for the lifting path of the first car and its top extension section and the lift shaft space required for the lifting path of the second car and its top extension section.

[0009] Preferably, the projection of the lift shaft space required for the lifting path of the first counterweight in the thickness direction of the first counterweight does not overlap or partially overlaps with the projection of the lift shaft space required for the lifting path of the second counterweight in the thickness direction of the second counterweight.

[0010] Preferably, the rotational plane of the first traction rope wheel is parallel to the plane between the adjacent first car wall and the first counterweight guide rail;

[0011] The rotational plane of the second traction rope wheel is parallel to the plane between the adjacent second car wall and the second counterweight guide rail;

[0012] The rotational plane of the first traction rope wheel is parallel to the rotational plane of the second traction rope wheel.

[0013] Preferably, the first traction rope wheel is arranged within the space between the first motor drive device and the lift shaft space required for the lifting path of the first car and its top extension section;

[0014] The second traction rope wheel is disposed within the space between the second motor drive device and the hoistway space required for the lifting path of the second car and its overhead extension section.

[0015] Preferably, a part of the first motor drive device is disposed within the second hoistway space;

[0016] and / or a part of the second motor drive device is disposed within the first hoistway space.

[0017] Preferably, the plane between the first counterweight guide rails is parallel to the plane between the second counterweight guide rails;

[0018] The plane between the first car guide rails is parallel to the plane between the second car guide rails;

[0019] The plane between the first counterweight guide rails is perpendicular to the plane between the first car guide rails.

[0020] Preferably, in the direction perpendicular to the plane between the first car guide rails, the projections of the first motor drive device and the second motor drive device partially overlap.

[0021] Preferably, an intermediate hoistway wall is provided between the hoistway space required for the lifting path of the first counterweight and the hoistway space required for the lifting path of the second counterweight;

[0022] The intermediate hoistway wall is parallel to the plane between the first counterweight guide rails and the plane between the second counterweight guide rails.

[0023] Preferably, a part of the first motor drive device is disposed within the hoistway space required for the overhead extension section of the intermediate hoistway wall; and / or a part of the second motor drive device is disposed within the hoistway space required for the overhead extension section of the intermediate hoistway wall.

[0024] Preferably, the first car door is parallel to the plane between the first car guide rails;

[0025] The second car door is parallel to the plane between the second car guide rails;

[0026] The first car door and the second car door are located on the same side of the plane between the first car guide rails.

[0027] Preferably, the second motor drive device has the same structure as the first motor drive device.

[0028] Preferably, the first motor drive device includes: a first motor, a first gearbox, the first motor drives a first traction rope wheel to perform a rotational motion through the first gearbox; the first gearbox is disposed between the first motor and the first traction rope wheel; the projection of the rotating component of the first motor and each transmission gear of the first gearbox along the axial direction of the first traction rope wheel is smaller than the diameter D1 of the first traction rope wheel.

[0029] Preferably, the first motor has a long cylindrical structure; the rotational speed of the first traction sheave is less than that of the first motor; each transmission gear of the first gearbox is a helical gear.

[0030] Preferably, the first motor drive device has a first braking device, and the first motor is arranged between the first braking device and the first gearbox; the projection of the first braking device along the axial direction of the first traction sheave is smaller than the diameter D1 of the first traction sheave.

[0031] The machine-roomless elevator of the present invention is conducive to the use of machine-roomless elevators in application scenarios with large load capacity and high-speed operation, saving building space. Moreover, when one of the motor drive devices fails, elevator maintenance personnel can approach the faulty motor drive device by operating or moving another normal elevator, completing the maintenance or part replacement operation of the faulty motor drive device, bringing more convenience to elevator maintenance personnel and reducing operation safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] Figure 1 is a perspective view of the main part of an embodiment of the machine-roomless elevator of the present invention;

[0034] Figure 2 is Figure 1 a top view of;

[0035] Figure 3 is Figure 1 a front view of;

[0036] Figure 4 is Figure 3 a left view of;

[0037] Figure 5 is Figure 1 a perspective view of the machine-roomless elevator omitting the middle hoistway wall;

[0038] Figure 6 is Figure 1 a perspective view of the motor drive device of;

[0039] Figure 7 is Figure 6 a side view of;

[0040] Figure 8 is Figure 7 a rear view of.

[0041] The descriptions of the reference numerals in the drawings are as follows:

[0042] 1 First hoistway; 2 Second hoistway; 11 First car; 12 First counterweight; 13 First traction rope; 14 First motor drive device; 21 Second car; 22 Second counterweight; 23 Second traction rope; 24 Second motor drive device; 110 First car guide rail; 111 First car wall; 112 First car deflecting sheave; 113 Traction rope end connection device on the first car side; 114 First car door; 120 First counterweight guide rail; 122 First counterweight deflecting sheave; 123 Traction rope end connection device on the first counterweight side; 140 First traction sheave; 141 First motor; 142 First gearbox; 143 First braking device; 144 First sensor; 210 Second car guide rail; 211 Second car wall;

[0043] 212 Second car deflecting sheave; 213 Traction rope end connection device on the second car side; 214 Second car door; 220 Second counterweight guide rail; 222 Second counterweight deflecting sheave; 223 Traction rope end connection device on the second counterweight side; 240 Second traction sheave; 1000 Machine-roomless elevator; 2001 Intermediate hoistway wall; 2002 Peripheral hoistway wall; 2003 Hoistway ceiling; D1 Diameter of the first traction sheave; L1 Thickness of the first motor drive device and the first traction sheave; W1 Thickness of the first counterweight; L2 Thickness of the second motor drive device and the second traction sheave; W2 Thickness of the second counterweight. Detailed implementation manners

[0044] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment 1

[0046] As Figures 1-5 shown, a machine-roomless elevator 1000 has:

[0047] A first hoistway (1) and a second hoistway (2);

[0048] A first car (11) and a first counterweight (12) that interactively move up and down along a first car guide rail (110) and a first counterweight guide rail (120) respectively in the first hoistway;

[0049] A second car (21) and a second counterweight (22) that interactively move up and down along a second car guide rail (210) and a second counterweight guide rail (220) respectively in the second hoistway;

[0050] A first hoisting rope (13) for suspending a first car and a first counterweight;

[0051] A second hoisting rope (23) for suspending a second car and a second counterweight;

[0052] A first hoisting rope wheel (140) coupled to the first hoisting rope (13); the rotational movement of the first hoisting rope wheel (140) causes the first car (11) and the first counterweight (12) to move up and down interactively through the first hoisting rope (13);

[0053] A first motor driving device (14) that drives the first hoisting rope wheel (140) to perform a rotational movement;

[0054] A second hoisting rope wheel (240) coupled to the second hoisting rope (23); the rotational movement of the second hoisting rope wheel (240) causes the second car (21) and the second counterweight (22) to move up and down interactively through the second hoisting rope (23);

[0055] A second motor driving device (24) that drives the second hoisting rope wheel (240) to perform a rotational movement;

[0056] The top spaces of the first hoistway (1) and the second hoistway (2) are opened up, and the first motor driving device (14) and the first hoisting rope wheel (140), the second motor driving device (24) and the second hoisting rope wheel (240) are all arranged in the opened-up top space, and each occupies the common hoistway wall extension space and a part of the other hoistway extension space, as Figure 1 shown.

[0057] Alternatively, when the lengths of the first motor driving device (14) and the first hoisting rope wheel (140) do not exceed the common hoistway wall, only the common hoistway wall extension space is occupied. Similarly, when the lengths of the second motor driving device (24) and the second hoisting rope wheel (240) do not exceed the common hoistway wall, only the common hoistway wall extension space is occupied.

[0058] Preferably, the hoistway spaces required for the lifting paths of the first counterweight (12) and the second counterweight (22) are arranged within the space between the hoistway space required for the lifting path of the first car (11) and its top extension section and the hoistway space required for the lifting path of the second car (21) and its top extension section.

[0059] Preferably, the rotational plane of the first hoisting rope wheel (140) is parallel to the plane between the adjacent first car wall (111) and the first counterweight guide rail (120);

[0060] The rotation plane of the second traction sheave (240) is parallel to the plane between the adjacent second car wall (211) and the second counterweight guide rail (220);

[0061] The rotation plane of the first traction sheave (140) is parallel to the rotation plane of the second traction sheave (240).

[0062] Preferably, the plane between the first counterweight guide rails (120) is parallel to the plane between the second counterweight guide rails (220);

[0063] The plane between the first car guide rails (110) is parallel to the plane between the second car guide rails (210);

[0064] The plane between the first counterweight guide rails (120) is perpendicular to the plane between the first car guide rails (110).

[0065] For the machine-roomless elevator of this embodiment, by reasonably arranging the cars, counterweights, traction ropes, traction sheaves, motor drive devices, etc. of the two machine-roomless elevators in the spaces of the two hoistways, the cross-sectional area space of the hoistway occupied by the two motor drive devices and the traction sheaves is generally reduced from the overall space required for the two machine-roomless elevators, which is beneficial to the use of machine-roomless elevators in application scenarios with large load capacity and high-speed operation, and saves building space.

[0066] Embodiment 2

[0067] As Figures 1-5 shown, based on the machine-roomless elevator of Embodiment 1, the machine-roomless elevator 1000 further has

[0068] The first hoistway (1) and the second hoistway (2) have peripheral hoistway walls (2002) and a hoistway ceiling (2003).

[0069] The bottom of the first car 11 has two first car deflecting sheaves 112, and the top of the first counterweight 12 has a first counterweight deflecting sheave 122,

[0070] The traction rope end termination device 113 on the first car side;

[0071] The traction rope end termination device 123 on the first counterweight side;

[0072] The bottom of the second car 21 has two second car deflecting sheaves 212, and the top of the second counterweight 22 has a second counterweight deflecting sheave 222,

[0073] The traction rope end termination device 213 on the second car side;

[0074] The traction rope end termination device 223 on the second counterweight side.

[0075] Preferably, the thickness (L1) of the first motor driving device (14) and the first traction sheave (140) is greater than the thickness (W1) of the first counterweight, and / or the thickness (L2) of the second motor driving device (24) and the second traction sheave (240) is greater than the thickness (W2) of the second counterweight.

[0076] Preferably, the projection of the hoistway space required for the lifting path of the first counterweight (12) in the thickness direction of the first counterweight does not overlap or partially overlaps with the projection of the hoistway space required for the lifting path of the second counterweight (22) in the thickness direction of the second counterweight.

[0077] Preferably, the first traction sheave (140) is arranged within the space between the first motor driving device and the hoistway space required for the lifting path of the first car (11) and its overhead extension.

[0078] The second traction sheave (240) is arranged within the space between the second motor driving device and the hoistway space required for the lifting path of the second car (21) and its overhead extension.

[0079] Preferably, a part of the first motor driving device is arranged within the space of the second hoistway (2).

[0080] And / or a part of the second motor driving device is arranged within the space of the first hoistway (1).

[0081] Preferably, in the direction perpendicular to the plane between the first car guide rails, the projections of the first motor driving device (14) and the second motor driving device (24) partially overlap.

[0082] Preferably, an intermediate hoistway wall (2001) is provided between the hoistway space required for the lifting path of the first counterweight (12) and the hoistway space required for the lifting path of the second counterweight (22).

[0083] The intermediate hoistway wall (2001) is parallel to the plane between the first counterweight guide rails (120) and the plane between the second counterweight guide rails (220).

[0084] Preferably, a part of the first motor driving device (14) is arranged within the hoistway space required for the overhead extension of the intermediate hoistway wall (2001).

[0085] And / or a part of the second motor driving device (24) is arranged within the hoistway space required for the overhead extension of the intermediate hoistway wall (2001).

[0086] The machine-roomless elevator of this embodiment reduces the cross-sectional area of the hoistway occupied by the two motor drive devices and the traction rope wheels overall by reasonably arranging the spatial positions of the two motor drive devices and the traction rope wheels of the two machine-roomless elevators, and disposing part of one motor drive device within the hoistway space of the elevator driven by the other motor drive device and the traction rope wheels. Moreover, when one of the motor drive devices fails, elevator maintenance personnel can approach the faulty motor drive device by operating or moving the other normal elevator, which brings convenience to the maintenance operation.

[0087] Embodiment Three

[0088] As Figures 1-5 shown, based on the machine-roomless elevator of Embodiment Two, the plane between the first car door (114) and the first car guide rail (110) is parallel;

[0089] The plane between the second car door (214) and the second car guide rail (210) is parallel;

[0090] The first car door (114) and the second car door (214) are on the same side of the plane between the first car guide rails (110).

[0091] The machine-roomless elevator of this embodiment facilitates normal elevator rides for passengers by reasonably arranging the positions of the car doors of the two machine-roomless elevators on the same side. Moreover, when one of the motor drive devices fails, elevator maintenance personnel can conveniently approach the faulty motor drive device by operating or moving the other normal elevator, which brings convenience to the maintenance operation.

[0092] Embodiment Four

[0093] As Figures 6-8 shown, based on the machine-roomless elevator of Embodiment Three, the second motor drive device (24) has the same structure as the first motor drive device (14).

[0094] The first motor drive device (14) includes: a first motor (141) and a first gearbox (142). The first motor (141) drives the first traction rope wheel (140) to rotate through the first gearbox (142); the first gearbox (142) is disposed between the first motor (141) and the first traction rope wheel (140); the projection of the rotating components of the first motor (141) and the respective transmission gears of the first gearbox (142) along the axial direction of the first traction rope wheel (140) is smaller than the diameter D1 of the first traction rope wheel (140).

[0095] Preferably, the first motor (141) has a long cylindrical structure;

[0096] The rotational speed of the first traction rope wheel is less than the rotational speed of the first motor;

[0097] Each transmission gear of the first gearbox is a helical gear.

[0098] In the machine-roomless elevator of this embodiment, the motor drive device increases the torque output by the motor through a gear reduction box with helical gear transmission, and reasonably arranges the positions of the motor, the gearbox, and the traction rope pulley. When the motor drive device outputs a stable and large torque, it is beneficial to the miniaturization of the motor drive device. The miniaturized motor drive device can not only reduce the occupied space, facilitate handling, installation, arrangement, and maintenance, but also bring more convenience to the manufacturing of components.

[0099] Embodiment 5

[0100] As Figures 6-8 shown, based on the machine-roomless elevator of Embodiment 4, the first motor drive device 14 has a first braking device 143, and the first motor 141 is arranged between the first braking device 143 and the first gearbox 142; the projection of the first braking device 143 along the axial direction of the first traction rope pulley 140 is smaller than the diameter D1 of the first traction rope pulley 140.

[0101] The first motor drive device 14 further has a first sensor 144 for feedback the rotation information of the first motor 141, and the first sensor 144 is arranged at the center of the rear part of the first braking device 143. When the first motor 141 rotates, the rotation information is fed back to the elevator control system (not shown) through the first sensor 144.

[0102] In the machine-roomless elevator of this embodiment, by reasonably arranging the connection of the braking device with the motor and the gearbox, the output torque of the braking device can increase the braking torque after being transmitted by the gearbox, which is beneficial to the size and volume reduction of the miniaturized braking device, further miniaturizes the motor drive device, and reduces the occupied space. At the same time, the braking device and the sensor usually contain components that need to be regularly inspected and maintained, and some vulnerable parts need to be replaced during the service life of the elevator. This embodiment is beneficial for elevator inspection and maintenance personnel to conveniently approach the braking device and the sensor of the faulty motor drive device through the normal operation or movement of another elevator when the braking device and the sensor of one of the motor drive devices need to be inspected, maintained, or component replaced, which brings convenience to the inspection and maintenance operations.

[0103] 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 in the scope of protection of the present invention.

Claims

1. An inorganic room elevator, characterized in that, It includes at least a first hoistway (1) and a second hoistway (2) arranged in parallel; A first car (11) and a first counterweight (12) that interactively ascend and descend along a first car guide rail (110) and a first counterweight guide rail (120) respectively within the first hoistway; A second car (21) and a second counterweight (22) that interactively ascend and descend along a second car guide rail (210) and a second counterweight guide rail (220) respectively within the second hoistway; A first traction rope (13) suspends the first car and the first counterweight; A second traction rope (23) suspends the second car and the second counterweight; A first motor drive device (14) drives a first traction rope pulley (140) to perform a rotational motion; The rotational motion of the first traction rope pulley (140) causes the first car (11) and the first counterweight (12) to interactively ascend and descend through the first traction rope (13); A second motor drive device (24) drives a second traction rope pulley (240) to perform a rotational motion; The rotational motion of the second traction rope pulley (240) causes the second car (21) and the second counterweight (22) to interactively ascend and descend through the second traction rope (23); The top spaces of the first hoistway (1) and the second hoistway (2) are opened up, and the first motor drive device (14) and the first traction rope pulley (140), the second motor drive device (24) and the second traction rope pulley (240) are all arranged in the opened-up top space, and each occupies the common hoistway wall extension space, or each occupies the common hoistway wall extension space and a part of the other hoistway extension space.

2. The machine-roomless elevator according to claim 1, wherein The length of the first motor drive device (14) and the first traction rope pulley (140) exceeds the thickness of the first counterweight, or the length of the second motor drive device (24) and the second traction rope pulley (240) exceeds the thickness of the second counterweight.

3. The machine-roomless elevator according to claim 1, wherein The hoistway space required for the lifting paths of the first counterweight (12) and the second counterweight (22) is arranged within the space between the hoistway space required for the lifting path of the first car (11) and its top extension section and the hoistway space required for the lifting path of the second car (21) and its top extension section.

4. The machine-roomless elevator according to claim 1, wherein The projection of the hoistway space required for the lifting path of the first counterweight (12) in the thickness direction of the first counterweight does not overlap or partially overlaps with the projection of the hoistway space required for the lifting path of the second counterweight (22) in the thickness direction of the second counterweight.

5. The machine-roomless elevator according to claim 1, wherein The rotational plane of the first traction rope pulley (140) is parallel to the plane between the adjacent first car wall (111) and the first counterweight guide rail (120); The rotational plane of the second traction rope pulley (240) is parallel to the plane between the adjacent second car wall (211) and the second counterweight guide rail (220); The rotational plane of the first traction rope pulley (140) is parallel to the rotational plane of the second traction rope pulley (240).

6. The machine-roomless elevator according to claim 1, wherein the first traction sheave (140) is disposed within the space between the first motor drive device and the hoistway space required for the lifting path of the first car (11) and its overhead extension; the second traction sheave (240) is disposed within the space between the second motor drive device and the hoistway space required for the lifting path of the second car (21) and its overhead extension.

7. The machine-roomless elevator according to claim 1, wherein a part of the first motor drive device is disposed within the space of the second hoistway (2); and / or a part of the second motor drive device is disposed within the space of the first hoistway (1).

8. The machine-roomless elevator according to claim 1, wherein the plane between the first counterweight guide rails (120) is parallel to the plane between the second counterweight guide rails (220); the plane between the first car guide rails (110) is parallel to the plane between the second car guide rails (210); the plane between the first counterweight guide rails (120) is perpendicular to the plane between the first car guide rails (110).

9. The machine-roomless elevator according to claim 1, wherein in the direction perpendicular to the plane between the first car guide rails, the projections of the first motor drive device (14) and the second motor drive device (24) partially overlap.

10. The machine-roomless elevator according to claim 1, wherein an intermediate hoistway wall (2001) is provided between the hoistway space required for the lifting path of the first counterweight (12) and the hoistway space required for the lifting path of the second counterweight (22); the intermediate hoistway wall (2001) is parallel to the plane between the first counterweight guide rails (120) and the plane between the second counterweight guide rails (220).

11. The machine-roomless elevator according to claim 10, wherein a part of the first motor drive device (14) is disposed within the hoistway space required for the overhead extension of the intermediate hoistway wall (2001); and / or a part of the second motor drive device (24) is disposed within the hoistway space required for the overhead extension of the intermediate hoistway wall (2001).

12. The machine-roomless elevator according to claim 8, wherein the first car door (114) is parallel to the plane between the first car guide rails (110); the second car door (214) is parallel to the plane between the second car guide rails (210); the first car door (114) and the second car door (214) are located on the same side of the plane between the first car guide rails (110).

13. The machine-roomless elevator according to claim 1, wherein the second motor drive device (24) has the same structure as the first motor drive device (14).

14. The machine-roomless elevator according to claim 1, wherein The first motor driving device (14) includes: a first motor (141) and a first gearbox (142). The first motor (141) drives a first traction rope wheel (140) to perform a rotational movement through the first gearbox (142); the first gearbox (142) is disposed between the first motor (141) and the first traction rope wheel (140); the projections of the rotating components of the first motor (141) and the respective transmission gears of the first gearbox (142) along the axial direction of the first traction rope wheel (140) are smaller than the diameter D1 of the first traction rope wheel (140).

15. The machine-room-less elevator according to claim 14, wherein the first motor (141) has an elongated cylindrical structure; the rotational speed of the first traction rope wheel (140) is lower than the rotational speed of the first motor (141); the respective transmission gears of the first gearbox (142) are helical gears.

16. The machine-room-less elevator according to claim 14, wherein the first motor driving device (14) is provided with a first braking device (143), and the first motor is disposed between the first braking device and the first gearbox; the projection of the first braking device along the axial direction of the first traction rope wheel is smaller than the diameter D1 of the first traction rope wheel.

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