elevator host

Abstract

This invention relates to the field of elevator technology, and in particular to an elevator main unit. An elevator main unit includes a power mechanism, a support mechanism, and a traction mechanism. Both the power mechanism and the traction mechanism are connected to the support mechanism. The power mechanism can drive the traction mechanism to rotate. The power mechanism includes a power source and an output shaft. The traction mechanism includes a drive disc, a traction sheave, and a brake sheave. The support mechanism includes a base and a front bracket connected to each other. The output shaft is supported inside the base and extends from one end of the base, connecting to one end of the drive disc. The drive disc is supported on the front bracket, and the other end of the drive disc is connected to one side of the traction sheave. The traction sheave is supported on the outside of the base via the drive disc and the brake sheave. Its advantages are that the load and impact load on the traction sheave are distributed to the support mechanism, avoiding direct load bearing on the output shaft, reducing output shaft deformation, and lowering disturbances and noise during output shaft operation.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to elevator main units. Background Technology

[0002] The elevator engine is the power unit of the elevator, used to transmit and transfer power to make the elevator move.

[0003] In existing elevator main units, the traction sheave is typically directly connected to one end of the power output shaft. Since the traction sheave bears the elevator's load and operational impact loads for extended periods, this connection method easily leads to structural deformation of the output shaft, disturbing the components connected to it. This not only affects the stability and lifespan of the traction machine but also increases vibration and noise during operation. Some elevator main units support the output shaft via a base, but the output shaft still bears most of the load from the traction sheave, making it prone to deformation and affecting structural strength. Even after prolonged operation, it still generates vibration and noise, thus failing to meet the application requirements of elevators and traction machines. Summary of the Invention

[0004] Based on this, the present invention provides an elevator host to address the aforementioned technical problems of power components.

[0005] An elevator main unit includes a power mechanism, a support mechanism, and a traction mechanism. The power mechanism and the traction mechanism are both connected to the support mechanism, and the power mechanism can drive the traction mechanism to rotate.

[0006] The power mechanism includes a power source and an output shaft connected to each other; the traction mechanism includes a drive disc, a traction sheave, and a brake sheave; the support mechanism includes a base and a front bracket connected to each other; the output shaft is supported inside the base and extends from one end of the base and is connected to one end of the drive disc; the end of the drive disc connected to the output shaft is supported on the front bracket; the end of the drive disc away from the front bracket is connected to the brake sheave; the brake sheave is connected to the traction sheave and is supported on the base; the traction sheave is supported on the base via the brake sheave.

[0007] With this configuration, the load and impact load that the traction sheave receives over a long period of time will be distributed to the brake wheel and drive disc. The brake wheel can distribute the stress to the machine base, and the drive disc can transfer the stress to the front support. This allows the machine base and the front support to share the stress, avoiding the output shaft directly bearing the load. This achieves a balanced stress distribution and minimal deformation of the overall structure, reduces output shaft deformation, and lowers disturbances and noise during operation of the output shaft and connected power components. As a result, the elevator main unit operates quietly and reliably, meeting the requirements for low vibration and low noise.

[0008] In one embodiment, the brake wheel is supported on the base by a main bearing, and the drive disc is supported on the front bracket by a secondary bearing.

[0009] This configuration allows the main and auxiliary bearings to distribute the force on the traction sheave to the machine base, further reducing the force on the output shaft and thus reducing vibration and noise.

[0010] In one embodiment, the drive disc includes a first disc body and a second disc body, the second disc body surrounds the first disc body and is connected to the first disc body, the outer periphery of the second disc body is connected to the radial side of the brake wheel, and the first disc body is provided with a shaft hole for fixing the output shaft.

[0011] With this configuration, the drive disc consists of a first disc body connected to the output shaft and a second disc body connected to the brake wheel, which facilitates the transmission of power from the output shaft to the traction wheel connected to the brake wheel.

[0012] In one embodiment, the base is provided with an output section and a receiving section in sequence along the axial direction of the output shaft;

[0013] The power source is located inside the receiving part, and the output shaft extends from the output part and into the shaft hole. At the same time, the output part is located inside the brake wheel so that the brake wheel is supported on the outer wall of the output part.

[0014] With this configuration, the drive plate can easily cooperate with the output shaft, and the drive plate and the output section can jointly support the output shaft, thereby reducing the stress on the output shaft and significantly reducing problems such as output shaft deformation.

[0015] In one embodiment, the brake wheel includes a drive part and a brake part, the traction wheel is disposed on the outer periphery of the drive part, the drive part is supported on the outer wall of the output part, and the brake part is connected to the drive part for cooperating with a brake.

[0016] This design facilitates the connection between the traction sheave and the brake sheave.

[0017] In one embodiment, the traction sheave and the brake sheave are either integrally or separately configured.

[0018] This design allows for separate machining of the traction sheave and brake sheave, reducing machining difficulty and process costs, and making later maintenance more convenient; while integral molding of the traction sheave and brake sheave allows for a tighter connection between the two, resulting in higher connection strength.

[0019] In one embodiment, the braking part covers the receiving part, and the outer wall of the receiving part is provided with the brake that acts on the braking part.

[0020] With this configuration, the space occupied by the braking unit and the housing unit in the axial direction of the elevator main unit overlaps, thus saving space.

[0021] In one embodiment, the brake wheel is supported on the base by a main bearing, and the second disc is provided with a limiting step that extends along the axial direction of the output shaft and abuts against the main bearing.

[0022] With this design, a limiting step is provided between the drive disc and the main bearing, which facilitates the installation and positioning of the drive disc and makes the overall connection structure more stable.

[0023] In one embodiment, the front bracket includes a base and a support base. The base is connected to the machine base, and the support base is connected to the base and extends vertically upward. The support base has a fixing hole, and the first disc is disposed in the fixing hole.

[0024] With this configuration, the fixing hole can provide circumferential restraint for the auxiliary bearing and drive disc, and the load of the drive disc can be transmitted to the front bracket from any direction.

[0025] In one embodiment, the drive disk is connected to the output shaft via a spline structure, the spline structure including interlocking internal splines and external splines; the internal splines are disposed on the inner wall of the shaft hole, and the external splines are disposed on the outer wall of the output shaft;

[0026] A gap is provided between the external spline and the internal spline.

[0027] This configuration allows the spline structure to distribute the force more evenly between the drive disc and the output shaft, preventing stress concentration and enabling it to withstand greater stress loads. It also provides better centering, and the gap provides space for the external and internal splines to be squeezed, thus allowing for flexible fit between them. This significantly reduces the direct disturbance of the output shaft caused by the load deformation of the traction mechanism, achieving smooth operation.

[0028] In one embodiment, the power source includes a gear transmission module and an input shaft, the output shaft and the input shaft are respectively connected to the two ends of the gear transmission module, the gear transmission module is disposed inside the base, and the input shaft is supported inside the base.

[0029] With this configuration, the base, gear transmission module, input shaft, and output shaft constitute the gearbox. The traction sheave is supported on the base, and the output shaft is supported on the front bracket and the base. The output shaft and the brake wheel transmit power through the drive disc. This structure results in very little force on the output shaft, thus minimizing disturbance to the gear transmission module and ensuring smooth, quiet, and reliable operation between the gear pairs of the gear transmission module.

[0030] Compared to existing technologies, this invention, by altering the structural layout of the elevator main unit, distributes the long-term load and impact load on the traction sheave to the drive plate. The drive plate can then transfer stress to the front support, while the brake wheel can transfer stress to the base. This allows the support mechanism to distribute the stress, preventing the output shaft from directly bearing the load. Consequently, the overall structure experiences balanced stress and minimal deformation, reducing deformation of the output shaft and its connected components. This also reduces disturbances and noise during output shaft operation, making the elevator main unit quiet and reliable during operation. It meets the requirements for low vibration and low noise, and is particularly suitable for geared traction machines with high environmental stability requirements. Attached Figure Description

[0031] Figure 1 A cross-sectional view of the elevator host provided by the present invention;

[0032] Figure 2 Another sectional view of the elevator host provided by the present invention;

[0033] Figure 3 This is a front view of the elevator host provided by the present invention;

[0034] Figure 4 A side view of the elevator host provided by the present invention;

[0035] Figure 5 A cross-sectional view of the spline structure of the elevator host provided by the present invention;

[0036] Figure 6 This is an enlarged schematic diagram of the spline structure of the elevator host provided by the present invention.

[0037] The symbols in the diagram represent the following meanings:

[0038] 100. Elevator main unit; 10. Support mechanism; 11. Front bracket; 111. Base; 112. Support seat; 1121. Fixing hole; 1122. Hollowed-out; 12. Base; 121. Output section; 123. Receiving section; 20. Power mechanism; 21. Power source; 211. Stator; 212. Rotor; 22. Input shaft; 23. Gear transmission module; 24. Output shaft; 25. Spline structure; 251. Internal spline; 252. External spline; 253. Clearance; 30. Traction mechanism; 31. Drive disc; 311. First disc body; 312. Second disc body; 313. Secondary bearing; 314. Shaft hole; 32. Brake wheel; 321. Braking part; 322. Drive part; 323. Main bearing; 324. Limiting step; 33. Traction wheel; 40. Brake. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0044] Please see Figures 1-4 The present invention provides an elevator host 100, which is applied in the field of elevators and is used to deliver and transmit power to make the elevator move.

[0045] An elevator host 100 includes a power mechanism 20, a support mechanism 10, and a traction mechanism 30. The power mechanism 20 and the traction mechanism 30 are both connected to the support mechanism 10. The power mechanism 20 can drive the traction mechanism 30 to rotate.

[0046] The power mechanism 20 includes a power source 21 and an output shaft 24 connected to each other. The traction mechanism 30 includes a drive disc 31, a traction sheave 33, and a brake wheel 32. The support mechanism 10 includes a base 12 and a front bracket 11 connected to each other. The output shaft 24 is supported inside the base 12 and extends from one end of the base 12 and is connected to one end of the drive disc 31. The end of the drive disc 31 connected to the output shaft 24 is supported on the front bracket 11. The end of the drive disc 31 away from the front bracket 11 is connected to the brake wheel 32. The brake wheel 32 is connected to the traction sheave 33 and is supported on the base 12. The traction sheave 33 is supported on the base 12 through the brake wheel 32.

[0047] Thus, the output shaft 24 is supported within the base 12 and on the front support 11 via the drive disc 31. The output shaft 24 drives the brake wheel 32 to rotate around the base 12 via the drive disc 31, which in turn drives the traction sheave 33 to rotate. The load and impact load that the traction sheave 33 receives over a long period of time will first be distributed to the brake wheel 32 and the drive disc 31. The brake wheel 32 can then transfer the stress to the base 12, and the drive disc 31 can transfer the stress to the front support 11. This allows the support mechanism 10 to share the stress instead of the output shaft 24, preventing the output shaft 24 from directly bearing the load. This achieves a balanced stress distribution and minimal deformation of the overall structure, reduces the deformation of the output shaft 24, and lowers the disturbance and noise during the operation of the output shaft 24. This makes the elevator main unit 100 quiet and reliable during operation, meeting the requirements for low vibration and low noise.

[0048] Furthermore, the brake wheel 32 is supported on the base 12 via the main bearing 323, and the drive disc 31 is supported on the front bracket 11 via the auxiliary bearing 313. The base 12 and the brake wheel 32 are rotatably connected via the main bearing 323, and the front bracket 11 and the drive disc 31 are rotatably connected via the auxiliary bearing 313, making the connection more stable and reducing vibration and noise. At the same time, the main bearing 323 can distribute the load on the brake wheel 32 to the base 12, and the auxiliary bearing 313 can distribute the load on the drive disc 31 to the front bracket 11, preventing stress load from concentrating on either the brake wheel 32 or the drive disc 31, thus making the stress distribution more even.

[0049] Specifically, the main bearing 323 has a main inner ring and a main outer ring, and the auxiliary bearing 313 has a secondary inner ring and a secondary outer ring. The main outer ring is connected to the brake wheel 32, and the main inner ring is connected to the base 12; the secondary outer ring is connected to the front bracket 11, and the secondary inner ring is connected to the drive disc 31. The diameter of the main bearing 323 is larger than the diameter of the auxiliary bearing 313, and the width of the main bearing 323 in the axial direction is larger than the width of the auxiliary bearing 313 in the axial direction. This configuration allows the main bearing 323 to transmit a larger load, thus adapting to the larger brake wheel 32 and base 12, preventing damage to the main bearing 323 due to excessive load; while the auxiliary bearing 313 transmits a smaller load than the main bearing 323, thus adapting to the smaller drive disc 31 and front bracket 11, reducing the space occupied by the auxiliary bearing 313 while maintaining functionality.

[0050] Furthermore, the drive disc 31 includes a first disc body 311 and a second disc body 312. The second disc body 312 surrounds and connects to the first disc body 311. The outer periphery of the second disc body 312 is connected to the radial side of the brake wheel 32. The first disc body 311 has a shaft hole 314 for fixing the output shaft 24. The drive disc 31 is used to connect the output shaft 24 and the brake wheel 32 supported on the base 12. The disc body configuration facilitates the rotation of the drive disc 31 with the output shaft 24. The first disc body 311 and the second disc body 312 can be configured with different diameters, for example, the diameter of the first disc body 311 is smaller than that of the second disc body 312, so as to facilitate the connection of the first disc body 311 with the front bracket 11 and reduce the overall volume. The second disc body 312 is connected to the radial side of the brake wheel 32 through its outer periphery. This connection method can evenly transmit the power generated by the power source 21 to the brake wheel 32, and then evenly transmit it to the traction wheel 33, making the overall structure run stably and reducing vibration and noise. In this embodiment, the second disc 312 and the brake wheel 32 are connected by bolts. Of course, it is understood that in other embodiments, the second disc 312 and the brake wheel 32 can also be connected by other methods, such as welding.

[0051] Furthermore, the base 12 is provided with an output section 121 and a receiving section 123 sequentially along the axial direction of the output shaft 24. The power source 21 is located in the receiving section 123. One end of the output shaft 24 is connected to the power source 21, and the other end extends from the output section 121 and into the shaft hole 314 to connect with the drive disc 31. Simultaneously, the output section 121 is located inside the brake wheel 32, meaning the brake wheel 32 is supported on the outer wall of the output section 121. In this way, the size of the output section 121 can be adapted to the output shaft 24, facilitating its fit and reducing the space occupied by the base 12. The outer wall of the output section 121 can also distribute the stress from the traction wheel 33. At the same time, the drive disc 31, together with the output section 121, can support the output shaft 24, reducing the stress on the output end of the output shaft 24 and preventing deformation of the output shaft.

[0052] Furthermore, the brake wheel 32 includes a drive unit 322 and a brake unit 321. The traction wheel 33 is disposed on the outer periphery of the drive unit 322, which is supported on the outer wall of the output unit 121. The brake unit 321 is connected to the drive unit 322 and is used to cooperate with the brake 40. This provides a connection structure between the traction wheel 33 and the brake wheel 32. The traction wheel 33 is sleeved on the drive unit 322. When the drive unit 322 is driven to rotate by the power mechanism 20, the traction wheel 33 can rotate synchronously. Simultaneously, the stresses such as loads and impact loads on the traction wheel 33 are transmitted to the base 12 through the brake wheel 32, further dispersing the stress and minimizing the impact on the output shaft 24. It also fully utilizes the internal and axial space of the brake wheel 32, resulting in a compact and stable structure. The elevator main unit 100 also includes a brake 40, which is disposed on the outer periphery of the base 12 and can engage in friction braking with the brake wheel 32.

[0053] Furthermore, the traction sheave 33 and the brake sheave 32 can be integrated or separate. For example, a traction rope groove can be directly made on the outer periphery of the drive unit 322, so that the drive unit 322 can be used as the traction sheave 33, thereby simplifying the structure; alternatively, the traction sheave 33 can be set separately and fixed to the outer periphery of the drive unit 322 by a connector, which facilitates the periodic replacement of the traction sheave 33.

[0054] Furthermore, the braking part 321 covers the receiving part 123, and a brake 40 acting on the braking part 321 is provided on the outer wall of the receiving part 123. The space occupied by the braking part 321 and the receiving part 123 in the axial direction of the output shaft 24 overlaps, thereby making full use of the external space of the receiving part 123 and further reducing the overall volume. The braking part 321 may cover part or all of the receiving part 123, and correspondingly, the shape of the receiving part 123 may be designed to avoid the braking part 321.

[0055] Preferably, the base 12 is cylindrical to accommodate the rotating traction wheel 33 and brake wheel 32.

[0056] Further, see Figures 5-6 The drive disk 31 and the output shaft 24 are connected by a spline structure 25. The spline structure 25 enables the force between the drive disk 31 and the output shaft 24 to be more even, prevents stress concentration, can withstand greater stress loads, and has better centering.

[0057] Specifically, the spline structure 25 includes an inner spline 251 and an outer spline 252; the inner spline 251 is located on the inner wall of the shaft hole 314 of the first disc body 311 of the drive disc 31, and the outer spline 252 is located on the outer wall of the corresponding position of the output shaft 24.

[0058] A gap 253 is provided between the tooth tip of the external spline 252 and the bottom of the tooth groove of the internal spline 251. This arrangement provides space for the external spline 252 and the internal spline 251 to be compressed, thereby enabling a flexible fit between them. This significantly reduces the direct disturbance of the output shaft 24 caused by the deformation of the traction mechanism 30 under load, achieving smooth operation.

[0059] Furthermore, the front bracket 11 includes a base 111 and a support 112. The base 111 is connected to the base 12, and the support 112 is connected to the base 111 and extends vertically upward. A fixing hole 1121 is provided on the support 112. The first disc 311 is disposed in the fixing hole 1121 and is connected to the fixing hole 1121 through a secondary bearing 313. The fixing hole 1121 can form a circumferential limit on the secondary bearing 313 and the drive disc 31, and the load of the drive disc 31 can be transmitted to the front bracket 11 from any direction.

[0060] The support base 112 also has multiple openings 1122. These openings reduce the weight of the front bracket 11, decrease material consumption, and lower costs. In this embodiment, the front bracket 11 has four openings 1122, which are symmetrically distributed in pairs to ensure even stress distribution. In other embodiments, the number of openings 1122 can be different, and the arrangement can be changed, not limited to the above-mentioned four symmetrically distributed scheme.

[0061] Furthermore, the second disc 312 is provided with a limiting step 324, which extends along the axial direction of the output shaft 24 and abuts against the main bearing 323. This arrangement allows the main bearing 323 to be used to position the drive disc 31, facilitating installation and improving the overall structural stability.

[0062] In one embodiment, the elevator main unit 100 is a gearless traction machine. The power source 21 includes a stator 211 and a rotor 212. The stator 211 is disposed on the inner wall of the base 12, spaced apart from the outer wall of the rotor 212 to provide space for the rotor 212 to rotate. The inner wall of the rotor 212 is connected to the output shaft 24, thereby driving the output shaft 24 to rotate. During operation, when the stator 211 is energized, it generates magnetism. Magnets are installed on the rotor 212, and the magnetic force generated by the magnets and the stator 211 drives the rotor 212 to rotate. The inner wall of the rotor 212 is fixedly connected to the outer wall of the output shaft 24, so that the output shaft 24 rotates synchronously when the rotor 212 rotates.

[0063] In another embodiment, the elevator main unit 100 is a geared traction machine. The power source 21 includes a gear transmission module 23 and an input shaft 22. The output shaft 24 and the input shaft 22 are respectively connected to the two ends of the gear transmission module 23. The gear transmission module 23 is disposed within the base 12, and the input shaft 22 is supported inside the base 12. The input shaft 22 of the gear transmission module 23 is connected to the output ends of the stator 211 and the rotor 212. The driving force generated by the stator 211 and the rotor 212 is transmitted to the output shaft 24 through the reduction transmission of the gear transmission module 23, and then to the brake wheel 32, which in turn transmits the force to the traction sheave 33. The motor structure consisting of the stator 211 and the rotor 212 can be connected separately to the base 12, or it can be disposed together with the gear transmission module 23 within the base 12; no limitation is imposed here.

[0064] Compared to existing technologies, this invention distributes the long-term load and impact load on the traction sheave 33 to the brake wheel 32 and drive disc 31. The brake wheel 32 can then transfer the stress to the base 12, and the drive disc 31 can transfer the stress to the front support 11. This allows the support mechanism 10 to distribute the stress, avoiding the direct load on the output shaft 24. This achieves a balanced stress distribution and minimal deformation of the overall structure, reducing the deformation of the output shaft 24 and minimizing disturbances and noise during its operation. This makes the elevator main unit 100 quiet and reliable during operation, meeting the requirements for low vibration and low noise. It is especially suitable for geared traction machines with high environmental stability requirements. Reducing the disturbance of the output shaft minimizes the impact on the gear pair engagement in the gear transmission module 23, extending the service life of the traction machine.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An elevator main unit, characterized in that, It includes a power mechanism (20), a support mechanism (10) and a traction mechanism (30). The power mechanism (20) and the traction mechanism (30) are both connected to the support mechanism (10). The power mechanism (20) can drive the traction mechanism (30) to rotate. The power mechanism (20) includes a power source (21) and an output shaft (24) connected to each other. The traction mechanism (30) includes a drive disc (31), a traction wheel (33), and a brake wheel (32). The support mechanism (10) includes a base (12) and a front bracket (11) connected to each other. The output shaft (24) is supported inside the base (12) and extends from one end of the base (12) and is connected to one end of the drive disc (31). The end of the drive disc (31) connected to the output shaft (24) is supported on the front bracket (11). The end of the drive disc (31) away from the front bracket (11) is connected to the brake wheel (32). The brake wheel (32) is connected to the traction wheel (33). The brake wheel (32) is supported on the base (12). The traction wheel (33) is supported on the base (12) through the brake wheel (32). The drive disc (31) includes a first disc body (311) and a second disc body (312). The second disc body (312) surrounds the first disc body (311) and is connected to the first disc body (311). The outer periphery of the second disc body (312) is connected to the radial side of the brake wheel (32). The first disc body (311) has a shaft hole (314) for fixing the output shaft (24). The base (12) is provided with an output section (121) and a receiving section (123) in sequence along the axial direction of the output shaft (24). The power source (21) is located in the receiving part (123), the output shaft (24) extends out from the output part (121) and into the shaft hole (314), and the output part (121) is located in the brake wheel (32) so that the brake wheel (32) is supported on the outer wall of the output part (121); The brake wheel (32) includes a drive part (322) and a brake part (321). The traction wheel (33) is disposed on the outer periphery of the drive part (322). The drive part (322) is supported on the outer wall of the output part (121). The brake part (321) is connected to the drive part (322) and is used to cooperate with the brake (40). The braking part (321) covers the receiving part (123), and the outer wall of the receiving part (123) is provided with the brake (40) that acts on the braking part (321).

2. The elevator main unit according to claim 1, characterized in that, The brake wheel (32) is supported on the base (12) by the main bearing (323), and the drive disc (31) is supported on the front bracket (11) by the auxiliary bearing (313).

3. The elevator main unit according to claim 1, characterized in that, The brake wheel (32) is supported on the base (12) by the main bearing (323). The second disc (312) is provided with a limiting step (324), which extends along the axial direction of the output shaft (24) and abuts against the main bearing (323).

4. The elevator main unit according to claim 1, characterized in that, The front bracket (11) includes a base (111) and a support (112). The base (111) is connected to the base (12). The support (112) is connected to the base (111) and extends vertically upward. A fixing hole (1121) is provided on the support (112). The first disc (311) is disposed in the fixing hole (1121).

5. The elevator main unit according to claim 1, characterized in that, The drive disk (31) is connected to the output shaft (24) via a spline structure (25). The spline structure (25) includes an inner spline (251) and an outer spline (252) that mesh with each other. The inner spline (251) is located on the inner wall of the shaft hole (314), and the outer spline (252) is located on the outer wall of the output shaft (24). A gap (253) is provided between the external spline (252) and the internal spline (251).

6. The elevator main unit according to claim 1, characterized in that, The power source (21) includes a gear transmission module (23) and an input shaft (22). The output shaft (24) and the input shaft (22) are respectively connected to the two ends of the gear transmission module (23). The gear transmission module (23) is located inside the base (12), and the input shaft (22) is supported inside the base (12).

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