Rack for machine-room-less elevator system, elevator lifting driving device and elevator system

Abstract

The invention discloses a rack for a machine-room-less elevator system, an elevator lifting driving device and the elevator system. The machine frame comprises a base, a lifting device and a driving device, wherein the base is fixed to the upper portion in an elevator hoistway; the support is connected with the base, and an accommodating space is defined by the support and the base; the rotating part is arranged in the containing space and rotatably supported on a supporting part, extending towards the containing space, of the base, the rotating part is provided with a joint part which is constructed to be jointed with a tensioning part, and the rotating part rotates after receiving driving force; and the elevator advancing device connected with the tensioning component is driven by the tensioning component to move along the elevator shaft. The scheme has the advantages of being compact in structure, convenient to install, stable in working performance, safe and reliable to use, low in cost and the like.

Description

Technical Field

[0001] This disclosure relates to the field of elevator technology, and more specifically, to a frame, elevator lifting drive and elevator system for machine room-less elevator systems. Background Technology

[0002] Elevator systems are typically equipped with various power units such as traction machines and winches to provide driving force for system operation. When the rotating devices (such as elevator pulleys) arranged in the elevator system rotate under the driving force, they will drive the elevator car and / or counterweight along the elevator shaft through tensioning components (such as steel belts and wire ropes) installed on the rotating devices. For example, the elevator car usually moves up and down along guide rails in the elevator shaft to transport passengers, goods, and other objects to the target floor. This application, after research, has found that existing elevator power units and related components or equipment still have room for optimization and improvement in aspects such as structural layout, configuration, performance, manufacturing and usage costs, installation, and maintenance. Summary of the Invention

[0003] In view of this, the present disclosure provides a frame, an elevator lifting drive and an elevator system for a machine room-less elevator system, to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art, or to provide an alternative solution to the prior art.

[0004] According to one aspect of this disclosure, a rack for a machine-room-less elevator system is first provided, comprising:

[0005] The base is constructed as the upper part fixed inside the elevator shaft;

[0006] A support, which is connected to the base and together with the base defines an accommodating space; and

[0007] A rotating component, which is arranged within the receiving space and rotatably supported on a support extending from the base toward the receiving space, has a joint configured to engage with a tensioning member. The rotating component rotates upon receiving a driving force and drives an elevator travel device connected thereto along the elevator shaft via the tensioning member.

[0008] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the rotating member is rotatably supported on the support via a first bearing on a first side, and the rotating member is rotatably supported on the bracket via a second bearing on a second side opposite to the first side.

[0009] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the rotating member has a recess on the first side, the first bearing is arranged in the recess and the outer ring of the first bearing abuts against the inner surface of the recess, and the support extends into the recess and abuts against the inner ring of the first bearing.

[0010] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the frame is provided with an opening and the second bearing is arranged in the opening, the rotating member is provided with a shaft on the second side, the shaft extends into the opening and the outer surface of the shaft abuts against the inner ring of the second bearing, and the outer ring of the second bearing abuts against the outer surface of the opening.

[0011] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the shaft is connected to a position reference device in the machine room-less elevator system, the position reference device being arranged on the outside of the bracket and configured to provide a position signal relating to the position of the elevator travel device within the elevator shaft.

[0012] Optionally, in the frame for a machine room-less elevator system according to the present disclosure, the frame further includes a positioning element configured to define the first bearing and / or the second bearing in a preset position within the frame.

[0013] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the joint is configured such that its projection on the horizontal plane of the elevator shaft at least partially overlaps with the projection of the support on the horizontal plane, and / or the joint is provided with a bushing on which the tensioning member is fitted.

[0014] In the frame for a machine room-less elevator system according to the present disclosure, the bushing may optionally be integrally formed and fitted onto the joint, or the bushing may be configured to include two or more combinable parts that are assembled and fitted onto the joint.

[0015] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the joint between two adjacent portions of the combinable portion is configured in a stepped shape, an arc shape, or a diagonal shape, wherein the angle formed between the diagonal and the longitudinal section of the rotating member is less than 90° and not less than 10°.

[0016] In the frame for a machine room-less elevator system according to the present disclosure, optionally, the base includes a body and one or more connecting portions extending outward from the body, the bracket defining the receiving space after being detachably connected to the connecting portions.

[0017] In the frame for a machine-room-less elevator system according to this disclosure, optionally, the frame is provided with a junction box, the junction box having at least one electrical connection interface for a drive member to provide driving force to the rotating member, and / or the elevator traveling device includes an elevator car and a counterweight, and / or the tensioning member includes a steel belt.

[0018] Secondly, according to another aspect of this disclosure, an elevator lifting drive device is also provided, comprising:

[0019] racks for machine-room-less elevator systems as described in any of the above; and

[0020] A driving element, which is arranged on the support, is used to provide driving force to the rotating element.

[0021] In the elevator lifting drive device according to the present disclosure, optionally, the drive element includes one or more motors, and after the drive element and the rotating element are installed in place, the rotor of the motor engages with the rotating element.

[0022] Optionally, in the elevator lifting drive device according to the present disclosure, the elevator lifting drive device further includes a brake connected to the base and / or the bracket and configured to decelerate or stop the elevator travel device by limiting the rotation of the rotating member, the brake including one or more caliper brakes.

[0023] Furthermore, according to yet another aspect of this disclosure, an elevator system is also provided, comprising:

[0024] An elevator travel device, configured to travel along the elevator shaft under the action of a driving force;

[0025] Tensioning component, which is connected to the elevator traveling device to transmit the driving force thereto; and

[0026] In any of the above-described elevator lifting drive devices, the tensioning member engages with the joint of the rotating member in the elevator lifting drive device.

[0027] The frame and elevator lifting drive device disclosed herein have numerous advantages, including compact structure, convenient installation, stable performance, safe and reliable operation, and low cost. Adopting this solution not only significantly reduces equipment size and installation space, providing favorable conditions for the overall spatial layout of the elevator system, but also saves considerable equipment manufacturing costs and effectively improves the safety performance of the elevator system. Attached Figure Description

[0028] The technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are intended to conceptually illustrate the structural construction described herein, and are not necessarily drawn to scale.

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an example elevator system that can adopt the elevator lifting drive device embodiment and the frame embodiment according to the present disclosure.

[0030] Figure 2 This is a three-dimensional structural diagram of an elevator lifting drive device embodiment according to the present disclosure after assembly.

[0031] Figure 3 It is a place where Figure 2 The schematic side cross-sectional view of the frame embodiment according to the present disclosure is shown in the embodiment of the elevator lifting drive device, which also shows the drive unit, position reference device, etc.

[0032] Figure 4 and Figure 3 The comparison shows a simplified side cross-sectional view of another rack product that can be configured and used in an elevator system, which also shows the drive unit, encoder, etc.

[0033] Figure 5 yes Figure 2 The diagram shows an exploded three-dimensional view of an embodiment of the elevator lifting drive device.

[0034] Figure 6 yes Figure 2 The diagram shows a side cross-sectional view of an embodiment of the elevator lifting drive device.

[0035] Figure 7 The diagram shows partial top views of the four different bushing embodiments after they have been installed into the joint of the rotating component in the elevator lifting drive device embodiment. Detailed Implementation

[0036] Figure 1This is a perspective view of an elevator system 100, which may include an elevator car 103, a counterweight 105, a tensioning component 107, guide rails (or track system) 109, a machine unit (or machine unit system) 111, a position reference device 113, and an electronic elevator controller (controller) 115. The elevator car 103 and the counterweight 105 can be collectively referred to as the elevator traveling device. They are connected to each other via the tensioning component 107 and travel along the elevator shaft 127 under driving force. The tensioning component 107 may include, for example, a steel belt (such as a coated steel belt) and / or a rope (such as a wire rope). The counterweight 105 may be configured to balance the load of the elevator car 103 and may be configured to facilitate the simultaneous and opposite movement of the elevator car 103 relative to the counterweight 105 along the guide rails 109 within the elevator shaft 117.

[0037] Tensioning member 107 can engage unit 111, which can be configured to control movement between elevator car 103 and counterweight 105. Unit 111 may include a motor or similar power unit to provide driving force to elevator system 100. The elevator lifting drive 30 discussed below can be used as unit 111 or part thereof to power system operation, enabling a machine room-less configuration. Position reference device 113 can be mounted, for example, to a moving part in unit 111, or arranged in other locations and / or configurations known in the art, such as mounted on a fixed portion at the top of elevator shaft 117, like a support rod or guide rail. Position reference device 113 can be configured to provide a position signal relating to the position of the elevator travel device within the elevator shaft. It can employ any device or mechanism known in the art for monitoring the position of elevator car and / or counterweight, such as, but not limited to, encoders, sensors, or other components, and may include speed sensing, absolute position sensing, etc.

[0038] Controller 115 may be located in controller room 121 of elevator shaft 117 and may be configured to control the operation of elevator system 100 (particularly elevator car 103). For example, controller 115 may provide drive signals to unit 111 to control the acceleration, deceleration, leveling, stopping, etc. of elevator car 103. Controller 115 may also be configured to receive position signals from position reference device 113 or any other desired such device or system. When moving up or down along guide rail 109 within elevator shaft 117, elevator car 103 may stop at one or more elevator floors 125 as controlled by controller 115. Although controller 115 is shown in controller room 121, those skilled in the art will appreciate that controller 115 may be located and / or configured in other places or locations within elevator system 100, such as remotely located or in the cloud.

[0039] This document shows and describes specific elevators and specific components. Figure 1These are non-limiting examples presented for illustrative and explanatory purposes only. It should be understood that other elevator systems may be configured to use the elevator lifting drive and frame disclosed herein. Furthermore, for the sake of simplicity in the drawings, identical or similar parts and features may be indicated only in one or more places in the same drawing. Technical terms such as "first," "second," etc., are used for distinguishing purposes only and are not intended to indicate their order or relative importance. The technical term "connection (or engagement)" includes connections (or engagements) achieved directly or indirectly.

[0040] For reference Figure 2 , Figure 3 , Figure 5 and Figure 6 The elevator lifting drive unit 30 can be configured with a frame 20. The frame 20 can be designed, manufactured, and sold independently, and in use, it can be integrated with the drive unit 24 to form the elevator lifting drive unit 30. Depending on actual needs, the frame 20 can be positioned at any suitable location in the upper part of the elevator shaft 127, such as being mounted to the shaft wall, guide rails, or beams. As used herein, in various embodiments, the frame 20 may include a base 21, a bracket 22, and a rotating component 23, which can be selected from the same or different materials, such as steel, iron, metal alloys, etc., and can be manufactured using any one or more suitable processes such as casting, stamping, and welding.

[0041] The base 21 can be designed with a suitable shape to meet the needs of a specific application. For example, it can employ a hollow, frame, or reinforcing rib structure to save materials, reduce weight, and increase rigidity. The base 21 can be fixed in place at the desired installation location using feasible methods such as bolting or welding. Then, the bracket 22 can be attached to the base 21, thereby defining the receiving space S. As an example, for instance... Figure 2 , Figure 5 and Figure 6 As shown, the base 21 may have a body 211 and a connecting portion 212 extending outward from the body 211. One or more connecting portions 212 may be provided as needed. The bracket 22 and the connecting portion 212 may be detachably fixed together using connectors 40 such as screws or bolts, thereby defining the aforementioned accommodating space S for accommodating various components that may be configured, such as rotating parts 23, positioning parts 26, etc.

[0042] In the frame 20, the rotating component 23 is rotatably supported on the base 21, more specifically, as follows: Figure 3 As shown, it is supported on the support portion 213 of the base 21, which extends toward the receiving space S and can be configured in an axial shape. Figure 5As shown, the rotating member 23 may have a first side 231 and a second side 232 opposite to each other, and it can rotate around the axis of rotation L under power drive. Figure 3 It performs rotational motion.

[0043] The tensioning member 107 can engage with the rotating member 23 via a joint 233 provided on the rotating member 23, so that the rotating member 23 can drive the tensioning member 107 to move after being driven to rotate, thereby driving the elevator car 103 and the counterweight 105 to move along the elevator shaft 127 via the tensioning member 107. Alternatively, a bushing 27 can be provided between the joint 233 and the tensioning member 107, which can increase friction, reduce component wear, reduce vibration, and extend service life, etc., which will be further explained later.

[0044] As used herein, in various embodiments, a recess 234 may be provided on the first side 231 of the rotating member 23 and the support portion 213 may be inserted into the recess 234 after the frame is installed. The bearing 31 may be installed in the recess 234 to support the rotating member 23. At this time, the inner ring and outer ring of the bearing 31 may abut against the outer surface of the support portion 213 and the inner surface of the recess 234, respectively, thereby providing support for the rotating member 23.

[0045] Alternatively, the rotating member 23 can be rotatably supported on the bracket 22 on the second side 232, for example, by a bearing 32. For example, an opening 221 can be provided in the bracket 22 and the bearing 32 can be arranged therein. The rotating member 23 can extend into the opening 221 through the shaft 235 provided on the second side 232. At this time, the inner ring and outer ring of the bearing 32 can abut against the outer surface of the shaft 235 and the outer surface of the opening 221, respectively, thereby providing support for the rotating member 23.

[0046] In use, one or more positioning elements can be arranged at suitable positions in the frame 20 to define the positions of bearings 31 and / or 32. For example, a generally annular positioning element can be arranged on the support 213 to define bearing 31 relative to the base 21 in a preset position. Figure 5 The figure has been illustrated with reference numeral 26 for such a positioning element that may be used in bearing 31.

[0047] Continue to refer to Figure 3 The figure shows a simplified side cross-sectional view of the frame 20. For ease of understanding, the drive unit 24 and the position reference device 113 are also shown in the figure. Furthermore, as with... Figure 3 Comparative illustrations of rack examples, in Figure 4The diagram shows a general side cross-sectional view of another rack product that can be configured for use in an elevator system. The rack includes a base 21a and a rotating member 23a. The rotating member 23a is provided with a rotating shaft 231a and is supported on the base 21a by bearings 31a and 32a. A tensioning member in the elevator system can engage with a joint 232a on the rotating member 23a. When the rotating member 23a is driven to rotate by the driving force provided by the driving member 24a, the tensioning member can drive the elevator car and / or counterweight to travel along the elevator shaft.

[0048] exist Figure 4 In the frame structure shown, the distance X between the base 21a, which can be fixed to the inner wall of the shaft, and the midpoint of the engagement position between the tensioning component and the joint 232a, has a relatively long dimension, for example, reaching 230 mm or more. During elevator use, the tensioning component bears the weight of the elevator car (including the total weight of the currently carried passengers) and the counterweight, and applies a force F to the rotating component. Because the cantilever beam formed by the aforementioned distance X is relatively long, the rotating component and the entire frame will be subjected to a large moment load (which can be expressed as F*X), tending to produce large deformation. This leads to various measures such as selecting larger or higher specification bearings for the frame and increasing the shaft size of the rotating component to ensure system performance, especially fatigue life. This not only increases equipment cost and size, but also makes installation and operation inconvenient, and occupies a large installation space in the elevator shaft.

[0049] return Figure 3 The example frame of this disclosure shown in the frame 20 provides support for the rotating member 23 via the support portion 213 of the base 21 through the bearing 31, and the rotating member 23 is supported by the bracket 22 via the shaft 235 of the rotating member 23 through the bearing 32. The engagement position of the joint portion 233 of the rotating member 23 and the tensioning member 107 is within the accommodating space S and is relatively closer to the fixed side of the base 21a (e.g., fixed to the inner wall of the shaft). Therefore, the distance X between the fixed side of the base 21a and the middle part of the engagement position of the tensioning member and the joint portion 233 has a significantly smaller size. For example, the size of 230 mm can be significantly reduced to only 55 mm, which is at most only one-quarter of the former. Therefore, the cantilever beam length and moment load can be significantly reduced.

[0050] In Figure 4 When compared with other existing rack products and meeting the same or even higher requirements for elevator applications, the rack disclosed herein does not require higher configuration requirements for structural components, such as those found in other rack products. Figure 4Compared to bearings of smaller size or specifications, these examples can save considerable costs on the equipment, and are easier to install and operate, reducing the space occupied by the equipment in the elevator shaft, thus providing favorable conditions for the spatial layout of the elevator system. Furthermore, the use of these bearings allows for flexible configuration, utilizing either the outer or inner ring of the bearing to abut against the rotating components. This enables the rotating components to better distribute the torque load among the base, brackets, and other components, resulting in a more balanced stress distribution throughout the entire structure and improving the safety of the elevator system.

[0051] As used herein, in various embodiments, the position reference device 113 (such as an encoder, sensor, etc.) can be connected to the shaft 235 of the rotating member 23, for example, the end connected to the shaft 235 is arranged outside the bracket 22 and may be provided with a cover 60; thus, with Figure 4 Compared to the structure shown, this design facilitates the installation, maintenance, and position signal acquisition of the position reference device 113. Figure 4 In the rack structure shown, the encoder 113a is arranged inside the entire structure, making it inconvenient to perform the aforementioned operations.

[0052] In the elevator lifting drive device 30, the driving force for the rotating member 23 can be provided by the driving member 24. As an example, the driving member 24 can be one or more motors depending on the application requirements. For example, the motor rotor 241 and the rotating member 23 can be engaged with a matching structure (such as a concave-convex structure, a toothed structure, etc.). For example, the outer surface of the motor rotor 241 can be engaged with the inner surface of the rotating member 23 so that after the motor is started, the rotation of the motor rotor 241 can drive the rotating member 23 to rotate, and then the elevator car 103 and the counterweight 105 can be moved via the tensioning member 107 engaged with the joint 233.

[0053] Continue to refer to Figure 3 and Figure 6 As used herein, in various embodiments, the joint 233 of the rotating member 23 may be arranged such that its projection on the horizontal plane of the elevator shaft 127 at least partially overlaps with the projection on the horizontal plane of the support portion 213 of the base 21. This arrangement facilitates more efficient use of the support portion 213 and the bearing 31 to bear the load, thereby improving the fatigue life of the equipment.

[0054] Alternatively, a bushing 27 can be further configured for the joint 233 of the rotating component 23, and the tensioning component 107 can then be fitted onto the bushing 27. This bushing can be made of a suitable material that meets the application requirements, such as a rubber material with wear-resistant and shock-absorbing properties. In one or more embodiments, the bushing 27 can be integrally manufactured (e.g., using an injection molding process) and then integrally mounted onto the joint 233 of the rotating component 23. The joint 233 may have one or more grooves for accommodating the tensioning component 107. In another or some embodiments, the bushing 27 can be configured as needed to have two or more combinable parts 271, which are then assembled and mounted onto the joint 233 of the rotating component 23 during use. Thus, if one or more of the combinable parts 271 of the bushing 27 wear out and cannot function properly, the damaged combinable parts 271 can be repaired or replaced directly. This not only ensures efficient operation and effectively saves costs but also helps to extend the service life of components such as the tensioning component and enhances the safety performance of the elevator system.

[0055] It should be understood that this disclosure allows for flexible configuration according to actual application needs regarding the specific number of combinable parts 271 in bushing 27, the configuration of individual combinable parts, and the matching settings between combinable parts, without imposing any restrictions. For example, these combinable parts 271 in bushing 27 can have configurations that are the same or different from each other in terms of circumferential length, edge contour, material, and color selection. For example, refer to... Figure 7 The exemplary embodiments shown allow the two adjacent combinable portions 271 of the bushing 27 to be configured into any suitable shape at the assembled seam 272, for example, in Figure 7 The diagram illustrates various seam configurations, including diagonal lines, stepped shapes, and arc shapes. Figure 7 (a) and Figure 7 (b) also shows that such oblique lines can have different tilt directions relative to the rotation axis L of the rotating member 23. For example, the oblique lines can be set such that the included angle α between them and the longitudinal section of the rotating member 23 is greater than or equal to 10° and less than 90°. When the joint 272 between two adjacent combinable parts 271 has a joint configuration that is not parallel to the rotation axis L of the rotating member 23, this can create a contact time difference between the tensioning member 107 and different joint parts, thus effectively reducing or avoiding adverse effects such as vibration and noise that may be caused when the tensioning member 107 contacts the joint 272.

[0056] A brake 28 can be configured in the elevator lifting drive device 30. For example, the brake 28 can be mounted on the base 21 and / or bracket 22 to brake the elevator travel device when needed. For example, the brake 28 can restrict the rotational movement of the rotating member 23, thereby causing the elevator car 103 and / or counterweight 105 to decelerate or stop. Those skilled in the art will understand that the brake 28 can employ any feasible device or mechanism capable of achieving the above functions. For example, Figure 2 , Figure 5 and Figure 6 As shown, one, two or more caliper brakes can be configured as needed. They can be arranged along the circumferential direction of the rotating member 23 and fixed to the base 21 using connectors 50 such as bolts and screws. In use, the caliper brakes can press against suitable parts of the rotating member 23, such as the flange 236, thereby restricting the rotation of the rotating member 23, thus slowing down or stopping the elevator travel device.

[0057] As used herein, in various embodiments, the elevator lifting drive unit 30 can be configured with one or more junction boxes 29 as needed, for example, arranged on the rack 20 or other suitable locations, such as... Figure 2 It is mounted on the outside of bracket 22 as shown for easy use. Junction box 29 can centrally house any electrical-related components that can be used for the elevator lifting drive, such as the electrical connection interfaces of drive unit 24, brake 28 and / or position reference device 113, control switches, cables, etc., or it can also store any other possible items such as maintenance tools and spare parts. This will greatly facilitate the daily maintenance and inspection of the elevator system and help ensure the safe operation of the system.

[0058] The above examples are merely illustrative of the frame, elevator lifting drive device, and elevator system for a machine room-less elevator system according to this disclosure. These examples are for illustrating the principles and implementation methods of this disclosure only, and are not intended to limit the scope of this disclosure. Various modifications and improvements can be made by those skilled in the art without departing from the scope of this disclosure. Therefore, all equivalent technical solutions should fall within the scope of this disclosure and be defined by the claims of this disclosure.

Claims

1. A frame for a machine-room-less elevator system, characterized in that, include: The base is constructed as the upper part fixed inside the elevator shaft; A support frame, which is connected to the base and together with the base defines an accommodating space; as well as A rotating component, which is arranged within the receiving space and rotatably supported on a support extending from the base toward the receiving space, has a joint configured to engage with a tensioning member. The rotating component rotates upon receiving a driving force and drives an elevator travel device connected thereto along the elevator shaft via the tensioning member.

2. The rack for a machine-room-less elevator system according to claim 1, wherein, The rotating member is rotatably supported on the support via a first bearing on a first side, and the rotating member is rotatably supported on the bracket via a second bearing on a second side opposite to the first side.

3. The rack for a machine-room-less elevator system according to claim 2, wherein, The rotating component has a recess on the first side, the first bearing is arranged in the recess and the outer ring of the first bearing abuts against the inner surface of the recess, and the support extends into the recess and abuts against the inner ring of the first bearing.

4. The rack for a machine-room-less elevator system according to claim 2, wherein, The frame has an opening and the second bearing is arranged in the opening. The rotating member has a shaft on the second side. The shaft extends into the opening and the outer surface of the shaft abuts against the inner ring of the second bearing. The outer ring of the second bearing abuts against the outer surface of the opening.

5. The rack for a machine-room-less elevator system according to claim 4, wherein, The shaft is connected to a position reference device in the machine room-less elevator system. The position reference device is arranged on the outside of the bracket and configured to provide a position signal related to the position of the elevator travel device in the elevator shaft.

6. The rack for a machine-room-less elevator system according to claim 2, wherein, The frame also includes a positioning element configured to limit the first bearing and / or the second bearing to a preset position in the frame.

7. The rack for a machine-room-less elevator system according to claim 1, wherein, The joint is configured such that its projection on the horizontal plane of the elevator shaft at least partially overlaps with the projection of the support on the horizontal plane, and / or the joint is provided with a bushing on which the tensioning member is fitted.

8. The rack for a machine-room-less elevator system according to claim 7, wherein, The bushing is integrally formed and fitted onto the joint, or the bushing is configured to include two or more combinable parts that are assembled and fitted onto the joint.

9. The rack for a machine-room-less elevator system according to claim 8, wherein, The joint between two adjacent parts in the combinable portion is constructed in a stepped shape, an arc shape, or a diagonal shape, wherein the angle formed between the diagonal and the longitudinal section of the rotating part is less than 90° and not less than 10°.

10. The rack for a machine-room-less elevator system according to claim 1, wherein, The base includes a body and one or more connecting portions extending outward from the body, and the bracket defines the receiving space after being detachably connected to the connecting portions.

11. The rack for a machine-room-less elevator system according to claim 1, wherein, The frame is provided with a junction box, which contains at least an electrical connection interface for a drive component to provide driving force to the rotating component, and / or the elevator traveling device includes an elevator car and a counterweight, and / or the tensioning component includes a steel belt.

12. An elevator lifting drive device, characterized in that, include: A rack for a machine room-less elevator system as described in any one of claims 1-11; as well as A driving element, which is arranged on the support, is used to provide driving force to the rotating element.

13. The elevator lifting drive device according to claim 12, wherein, The drive component includes one or more motors, and after the drive component and the rotating component are installed in place, the rotor of the motor engages with the rotating component.

14. The elevator lifting drive device according to claim 12, wherein, The elevator lifting drive device further includes a brake connected to the base and / or the bracket and configured to decelerate or stop the elevator travel device by restricting the rotation of the rotating member, the brake including one or more caliper brakes.

15. An elevator system, characterized in that, include: An elevator travel device, configured to travel along the elevator shaft under the action of a driving force; Tensioning components are connected to the elevator travel mechanism to transmit the driving force thereto; as well as The elevator lifting drive device according to any one of claims 12-14, wherein the tensioning member engages with the joint of the rotating member in the elevator lifting drive device.

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