A mechanical energy storage elevator system based on flywheel energy storage

Abstract

The present invention discloses a mechanical energy storage elevator system based on flywheel energy storage, which includes a load-bearing component and a power component for driving the load-bearing component upward or downward; the load-bearing component includes a car and a counterweight; the power component includes a traction rope, a guide wheel, a driving wheel, a gearbox, a motor and a flywheel; the traction rope is wound around the driving wheel and the guide wheel, and the two ends are respectively connected to the car and the counterweight; the motor is connected to the driving wheel through the gearbox, and the power is transmitted to the driving wheel through the gearbox; the flywheel is connected to the driving wheel through the gearbox, and the mechanical energy of the driving wheel is received and stored by the gearbox. By utilizing flywheel energy storage, the present invention can recycle the gravitational potential energy of the elevator when it is empty and when it is fully loaded. It not only solves the fire protection and safety problems caused by the elevator's electrical energy storage, but also avoids the impact of elevator energy feedback and harmonics on the power grid, improves energy utilization efficiency, reduces elevator energy consumption, and thus reduces building energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a mechanical energy storage elevator system based on flywheel energy storage. Background Art

[0002] As my country's urbanization process continues to accelerate, the urban population is increasing and the per capita land area is decreasing. Therefore, high-rise buildings continue to emerge and quickly become the main form of urban architecture.

[0003] Elevators, as a complex means of vertical transportation, are commonly used in high-rise buildings to transport people and goods. Elevators are a convenient, fast, and indispensable part of our lives. However, as elevators gain widespread popularity and development, their energy consumption is also increasing at an alarming rate. With energy issues becoming increasingly prominent, elevator energy-saving technology has become a hot topic.

[0004] As we all know, during elevator operation, the motor operates in two states: motor mode and generator mode. Under certain load conditions, such as when an elevator is traveling downhill unloaded or ascending fully loaded, the motor must overcome a certain resistance to pull the elevator car and counterweight. During this time, the motor draws and consumes power from the power grid (control cabinet), operating in the motor mode. Under other load conditions, such as when an elevator is traveling uphill unloaded or descending fully loaded, the weight imbalance between the car and the counterweight causes gravity to naturally cause the empty car to ascend, or the fully loaded car to descend. In these cases, the motor no longer needs to provide power and operates in the generator mode.

[0005] Currently, when the motor is in generator mode, conventional elevators use energy-dissipating resistors to dissipate this energy. This not only wastes energy but also increases internal energy, thereby increasing the cooling load required for heat dissipation in the machine room. To address this issue, existing technologies generally convert the elevator's mechanical energy into electrical energy through the motor and feed it back to the power grid in real time for energy recovery. However, unstable power generation and harmonics significantly impact the power grid, resulting in a low energy recovery rate. Subsequently, existing technologies have also attempted to store this portion of the motor's power through electrochemical or capacitive energy storage methods and then reuse it. This achieves energy recovery while avoiding impact on the power grid. However, electrical energy storage has drawbacks such as flammability, explosiveness, and high cost. Furthermore, the elevator's gravitational potential energy undergoes energy conversion losses at each stage of conversion (mechanical energy → electrical energy → electrochemical energy storage → electrical energy → mechanical energy), making it a poorly-designed energy recovery method.

[0006] Therefore, it is necessary to improve the existing technology.

[0007] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Summary of the Invention

[0008] The present invention provides a mechanical energy storage elevator system based on flywheel energy storage to solve the deficiencies of the prior art.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A mechanical energy storage elevator system based on flywheel energy storage, the system includes a load-bearing component and a power component for driving the load-bearing component upward or downward; wherein,

[0011] The load-bearing assembly includes a car and a counterweight;

[0012] The power assembly includes a traction rope, a guide wheel, a driving wheel, a gearbox, a motor and a flywheel;

[0013] The traction rope is wound around the driving wheel and the guide wheel, and its two ends are respectively connected to the car and the counterweight;

[0014] The motor is connected to the drive wheel through the gearbox, and transmits power to the drive wheel through the gearbox;

[0015] The flywheel is connected to the driving wheel through the gearbox, and receives and stores the mechanical energy of the driving wheel through the gearbox.

[0016] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the gearbox includes a drive shaft, a supporting roller bearing, a clutch, an energy storage shaft, a transmission shaft, a forward synchronizer, a forward gear, a coupling sleeve, a spline hub, a reverse synchronizer, a reverse gear and an idler shaft;

[0017] One end of the drive shaft is connected to the motor via the clutch, and the other end is connected to the drive wheel;

[0018] One end of the energy storage shaft is connected to the flywheel via another clutch;

[0019] The forward synchronizer, forward gear, reverse synchronizer, and reverse gear are respectively assembled on the transmission shaft;

[0020] The spline hub is fixed on the transmission shaft and is located between the forward synchronizer and the reverse synchronizer, and is engaged with the engagement sleeve;

[0021] The driving shaft, energy storage shaft, transmission shaft and idler shaft are all sleeved with the supporting roller bearings.

[0022] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the gearbox further comprises a housing;

[0023] The drive shaft, supporting roller bearing, energy storage shaft, transmission shaft, forward synchronizer, forward gear, coupling sleeve, spline hub, reverse synchronizer, reverse gear and idler shaft are all arranged in the housing;

[0024] The clutch is arranged outside the housing.

[0025] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the guide wheel is located on a side close to the counterweight, and the drive wheel is located on a side close to the car.

[0026] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the guide wheel and the driving wheel are arranged at the same height.

[0027] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the flywheel is a magnetic levitation flywheel.

[0028] Furthermore, in the mechanical energy storage elevator system based on flywheel energy storage, the flywheel is arranged in a vacuum chamber.

[0029] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0030] An embodiment of the present invention provides a mechanical energy storage elevator system based on flywheel energy storage. By utilizing flywheel energy storage, it is possible to recover the gravitational potential energy of an elevator traveling upward when empty and descending when fully loaded. This not only solves the fire protection and safety issues caused by elevator electrical energy storage, but also avoids the impact of elevator energy feedback and harmonics on the power grid, thereby improving energy utilization efficiency, reducing elevator energy consumption, and thus reducing building energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 1 is a schematic structural diagram of a mechanical energy storage elevator system based on flywheel energy storage provided by an embodiment of the present invention;

[0033] Figure 2 1 is a schematic structural diagram of a gearbox provided by an embodiment of the present invention;

[0034] Figure 3This is a schematic diagram of the movement directions of various components when charging and traveling without load or discharging and traveling with full load, provided by an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the movement directions of various components provided by an embodiment of the present invention when the vehicle is fully loaded and descending or discharged and unloaded and descending.

[0036] Reference numerals:

[0037] Car 1, counterweight 2, traction rope 3, guide wheel 4, drive wheel 5, gearbox 6, motor 7, flywheel 8;

[0038] Housing 601 , drive shaft 602 , supporting roller bearing 603 , clutch 604 , energy storage shaft 605 , transmission shaft 606 , forward synchronizer 607 , forward gear 608 , coupling sleeve 609 , spline hub 610 , reverse synchronizer 611 , reverse gear 612 , and idler shaft 613 . DETAILED DESCRIPTION

[0039] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a centrally located component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be a centrally located component.

[0041] In addition, terms such as "long", "short", "inside", and "outside" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientation structure, and should not be understood as a limitation of the present invention.

[0042] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0043] Example 1

[0044] In light of the aforementioned shortcomings of existing elevator energy recovery technology, the applicant, drawing on years of extensive practical experience and expertise in design and manufacturing in this industry, combined with applied theory, has actively engaged in research and innovation, hoping to create a technology that can address these shortcomings and make elevator energy recovery technology more practical. Through continuous research and design, as well as repeated trial production and improvements, the applicant has finally created the present invention, which has proven to be of practical value.

[0045] Please refer to Figures 1-2 , an embodiment of the present invention provides a mechanical energy storage elevator system based on flywheel 8 energy storage, the system includes a load-bearing component and a power component for driving the load-bearing component upward or downward; wherein,

[0046] The load-bearing assembly includes a car 1 and a counterweight 2; the car 1 is used to transport passengers and cargo; the counterweight 2 is used to balance the deadweight of the car 1 and a portion of the load weight.

[0047] The power assembly includes a traction rope 3, a guide wheel 4, a driving wheel 5, a gearbox 6, a motor 7 and a flywheel 8;

[0048] The traction rope 3 is wound around the driving wheel 5 and the guide wheel 4, and its two ends are respectively connected to the car 1 and the counterweight 2; the guide wheel 4 is located on the side close to the counterweight 2, and the driving wheel 5 is located on the side close to the car 1, and they are arranged at the same height; the guide wheel 4 is used to pull the distance between the traction rope 3 on both sides of the driving wheel 5 apart, so that the traction rope 3 acts vertically on the counterweight 2 and the car 1; the driving wheel 5 is used to transmit the power generated by the motor 7 to the traction rope 3, and relies on the friction between the traction rope 3 and the rope groove of the driving wheel 5 to drive the car 1 upward or downward.

[0049] The motor 7 is connected to the driving wheel 5 through the gearbox 6, and transmits the power converted from the electrical energy to the driving wheel 5 through the gearbox 6;

[0050] The flywheel 8 is connected to the drive wheel 5 through the gearbox 6, and receives and stores the mechanical energy of the drive wheel 5 through the gearbox 6; specifically, the gearbox 6 transmits the mechanical energy of the drive wheel 5 to the flywheel 8, at which time the flywheel 8 is storing energy and the speed increases; and when releasing energy, the bearings of the flywheel 8 perform work externally, that is, the mechanical energy is transferred back to the drive wheel 5, and the speed decreases.

[0051] In order to reduce air resistance and energy loss, preferably, the flywheel 8 is selected as a magnetic levitation flywheel, or the flywheel 8 is arranged in a vacuum chamber.

[0052] It should be noted that the specific functions of other designs of the elevator system, such as the elevator's safety protection, electrical control, door system, accompanying cables, etc., are to ensure the normal operation of various functions of the elevator system. Since these designs have been widely implemented in the existing technology and are not the focus of this design, they will not be elaborated in depth here.

[0053] In this embodiment, if Figure 2 As shown, the gearbox 6 includes a drive shaft 602, a supporting roller bearing 603, a clutch 604, an energy storage shaft 605, a transmission shaft 606, a forward synchronizer 607, a forward gear 608, an engagement sleeve 609, a spline hub 610, a reverse synchronizer 611, a reverse gear 612 and an idler shaft 613;

[0054] One end of the drive shaft 602 is connected to the motor 7 via the clutch 604, and the other end is connected to the drive wheel 5;

[0055] One end of the energy storage shaft 605 is connected to the flywheel 8 through another clutch 604; whether it is the clutch 604 connected to the motor 7 or the clutch 604 connected to the flywheel 8, it is closed when doing work and separated when not doing work, so as to control the connection of the motor 7 or the flywheel 8 and reduce the impact of the shaft wheel during startup.

[0056] The forward synchronizer 607, forward gear 608, reverse synchronizer 611, and reverse gear 612 are respectively assembled on the transmission shaft 606. The forward synchronizer 607 causes the forward gear 608 and the transmission shaft 606 to rotate synchronously. Specifically, when the forward synchronizer 607 and the forward gear 608 are pressed against each other, friction causes the forward gear 608 and the transmission shaft 606 to rotate synchronously. The forward gear 608 transmits the torque of the transmission shaft 606 to the drive shaft 602.

[0057] The spline hub 610 is fixed to the transmission shaft 606 and is located between the forward synchronizer 607 and the reverse synchronizer 611. It is meshed with the engagement sleeve 609. The engagement sleeve 609 can be pushed by a direction-changing push rod thereon to move toward the forward synchronizer 607 or the reverse synchronizer 611. When the engagement sleeve 609 is pushed toward the forward synchronizer 607 and pressed against the forward gear 608, torque is transmitted to the forward gear 608. When the engagement sleeve 609 is pushed toward the reverse synchronizer 611 and pressed against the reverse gear 612, torque is transmitted to the reverse gear 612.

[0058] The reverse synchronizer 611 enables the reverse gear 612 and the transmission shaft 606 to rotate synchronously; the reverse gear 612 is used to transmit the torque of the transmission shaft 606 to the reverse gear 612, and the reverse gear 612 is engaged with the idler shaft 613. The idler shaft 613 can maintain the unidirectional rotation of the flywheel 8, and the idler can change the rotation direction of the drive shaft 602.

[0059] The driving shaft 602 , the energy storage shaft 605 , the transmission shaft 606 , and the idler shaft 613 are all sleeved with the supporting roller bearings 603 .

[0060] Preferably, the gearbox 6 further includes a housing 601;

[0061] The drive shaft 602, support roller bearing 603, energy storage shaft 605, transmission shaft 606, forward synchronizer 607, forward gear 608, coupling sleeve 609, spline hub 610, reverse synchronizer 611, reverse gear 612 and idler shaft 613 are all disposed in the housing 601;

[0062] The clutch 604 is disposed outside the housing 601 .

[0063] In order to more clearly illustrate the implementation process of the solution of the embodiment of the present invention, a detailed description is given below using specific examples.

[0064] (1) Charging:

[0065] like Figure 3 As shown, if the car is traveling upward without a load, the gravity of the counterweight 2 is greater than the gravity of the car 1; the driving wheel 5 is driven by gravity. Figure 3 The clutch 604 connected to the flywheel 8 is closed, and the direction-changing push rod on the coupling sleeve 609 pushes the coupling sleeve 609 toward the forward synchronizer 607. The kinetic energy of the drive wheel 5 is engaged with the forward gear 608 through the gear of the drive shaft 602, driving the transmission shaft 606, and transmitting the torque to the energy storage shaft 605, thereby driving the flywheel 8 to rotate and charge energy. The movement direction of each component is shown in FIG. Figure 3 As shown by the arrow in , at this time, the gravitational potential energy is converted into kinetic energy of the flywheel 8.

[0066] like Figure 4 As shown, if the elevator is fully loaded and descending at this time, the gravity of the counterweight 2 is less than the gravity of the car 1; the driving wheel 5 is driven by gravity. Figure 4The clutch 604 connected to the flywheel 8 is closed, and the direction-changing push rod on the engagement sleeve 609 pushes the engagement sleeve 609 toward the reverse synchronizer 611. The kinetic energy of the drive wheel 5 is transmitted through the gear and idler gear 613 of the drive shaft 602, meshing with the reverse gear 612, driving the transmission shaft 606, and transmitting torque to the energy storage shaft 605, thereby driving the flywheel 8 to rotate and charge energy. The movement direction of each component is shown as follows: Figure 4 As shown by the arrow in , at this time, the gravitational potential energy is converted into kinetic energy of the flywheel 8.

[0067] (2) Energy storage:

[0068] During energy storage, the clutch 604 is disengaged, and the flywheel 8 stores kinetic energy by relying on its own inertia.

[0069] (3) Energy release:

[0070] like Figure 3 As shown, if the car is fully loaded and moving upward, the gravity of the counterweight 2 is less than the gravity of the car 1; the flywheel 8 drives the gearbox 6 to work, and the driving wheel 5 is Figure 3 The clutch 604 connected to the flywheel 8 is closed, and the clutch 604 connected to the motor 7 is disengaged. The direction-changing push rod on the coupling sleeve 609 pushes the coupling sleeve 609 toward the forward synchronizer 607. The kinetic energy of the flywheel 8 is transmitted to the drive shaft 602 through the energy storage shaft 605, the transmission shaft 606, and the forward gear 608, thereby driving the drive wheel 5 to rotate. The movement direction of each component is as shown in FIG. Figure 3 As shown by the arrow in . The flywheel 8 does work, and the kinetic energy of the flywheel 8 is converted into the gravitational potential energy of the elevator.

[0071] like Figure 4 As shown, if the car is empty and descending at this time, the gravity of the counterweight 2 is greater than the gravity of the car 1. The flywheel 8 drives the gearbox 6 to work, and the driving wheel 5 is Figure 4 The clutch 604 connected to the flywheel 8 is closed, and the clutch 604 connected to the motor 7 is disengaged. The direction-changing push rod on the coupling sleeve 609 pushes the coupling sleeve 609 toward the reverse synchronizer 611. The kinetic energy of the flywheel 8 is transmitted through the energy storage shaft 605, the transmission shaft 606, and the reverse gear 612. After the idler gear is reversed, the torque is transmitted to the drive shaft 602, driving the drive wheel 5 to rotate. The movement direction of each component is as shown in FIG. Figure 4 As shown by the arrow in . The flywheel 8 does work, and the kinetic energy of the flywheel 8 is converted into the gravitational potential energy of the elevator.

[0072] Since most elevator loads have a conserved passage characteristic, the load going upstairs = the load going downstairs (for example, the number of people going upstairs in a residential elevator in a day ≈ the number of people going downstairs), only a small amount of electricity is needed to provide power to offset friction loss and work done during special passage, as well as to provide working power for the electrical equipment in the elevator, so as to achieve low operating energy consumption of the energy storage elevator.

[0073] When the energy stored in the flywheel 8 is insufficient to provide energy for fully loaded and unloaded upward movement, the clutch 604 connected to the motor 7 is closed. Under the supply of commercial power, the motor 7 performs work through the gearbox 6 to drive the elevator to operate.

[0074] Although the terms car, counterweight, traction rope, guide wheel, drive wheel, gearbox 6, motor 7, and flywheel are frequently used herein, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

[0075] An embodiment of the present invention provides a mechanical energy storage elevator system based on flywheel energy storage. By utilizing flywheel energy storage, it is possible to recover the gravitational potential energy of an elevator traveling upward when empty and descending when fully loaded. This not only solves the fire protection and safety issues caused by elevator electrical energy storage, but also avoids the impact of elevator energy feedback and harmonics on the power grid, thereby improving energy utilization efficiency, reducing elevator energy consumption, and thus reducing building energy consumption.

[0076] Thus far, the description of the above-described embodiments has been provided for the purpose of illustration and description. It is not intended to be exhaustive or to limit the present disclosure. The individual elements or features of a particular embodiment are generally not limited to the particular embodiment, but when applicable, they can be interchanged and used for selected embodiments even if not specifically shown or described. In many aspects, the same elements or features can also be changed. Such changes are not considered to depart from the present disclosure, and all such modifications are intended to be included within the scope of the present disclosure.

[0077] Example embodiments are provided so that the present disclosure will be thorough and will fully convey the scope to those skilled in the art. In order to thoroughly understand the embodiments of the present disclosure, numerous details are set forth, such as examples of specific parts, devices, and methods. It will be apparent to those skilled in the art that specific details need not be used, and the example embodiments may be implemented in many different forms, and neither should be construed as limiting the scope of the present disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0078] Here, professional vocabulary is used only for the purpose of describing specific example embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a" and "the" used herein may be intended to include the plural forms as well. The terms "including" and "having" are inclusive and therefore specify the presence of the claimed features, wholes, steps, operations, elements and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. Unless the order of execution is explicitly indicated, the method steps, processes and operations described herein are not to be interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0079] When an element or layer is referred to as being "on...", "engaged with...", "connected to" or "coupled to" another element or layer, it may be directly on, engaged with, connected to or coupled to another element or layer, or there may be elements or layers between them. In contrast, when an element or layer is referred to as being "directly on...", "directly engaged with...", "directly connected to" or "directly coupled to" another element or layer, there may be no elements or layers between them. Other words used to describe element relationships should be interpreted in a similar manner (for example, "between..." and "directly between...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first," "second," and other numerical terms herein does not imply a sequence or order. Thus, a first element, component, region, layer, or section discussed below may adopt the terminology of a second element, component, region, layer, or section without departing from the teachings of this exemplary embodiment.

[0080] Spatially relative terms, such as "inside," "outside," "below," "beneath," "lower," "above," "upper," and the like, may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figures. Spatially relative terms may be meant to encompass different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, elements described as "below" or "beneath" other elements or features will be oriented "above" the other elements or features. Thus, the example term "beneath" may encompass both upward and downward orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations) and interpreted with the spatially relative descriptions herein.

Claims

1. A mechanical energy storage elevator system based on flywheel energy storage, characterized in that: The system includes a load-bearing component and a power component for driving the load-bearing component upward or downward; wherein, The load-bearing assembly includes a car and a counterweight; The power assembly includes a traction rope, a guide wheel, a driving wheel, a gearbox, a motor and a flywheel; The traction rope is wound around the driving wheel and the guide wheel, and its two ends are respectively connected to the car and the counterweight; The motor is connected to the drive wheel through the gearbox, and transmits power to the drive wheel through the gearbox; The flywheel is connected to the driving wheel through the gearbox, and receives and stores the mechanical energy of the driving wheel through the gearbox; The gearbox includes a drive shaft, a supporting roller bearing, a clutch, an energy storage shaft, a transmission shaft, a forward synchronizer, a forward gear, a coupling sleeve, a spline hub, a reverse synchronizer, a reverse gear and an idler shaft; One end of the drive shaft is connected to the motor via the clutch, and the other end is connected to the drive wheel; One end of the energy storage shaft is connected to the flywheel via another clutch; The forward synchronizer, forward gear, reverse synchronizer, and reverse gear are respectively assembled on the transmission shaft; The spline hub is fixed on the transmission shaft and is located between the forward synchronizer and the reverse synchronizer, and is engaged with the engagement sleeve; The driving shaft, energy storage shaft, transmission shaft and idler shaft are all sleeved with the supporting roller bearings; The guide wheel is located on a side close to the counterweight, and the driving wheel is located on a side close to the car.

2. The mechanical energy storage elevator system based on flywheel energy storage according to claim 1, characterized in that: The gearbox also includes a housing; The drive shaft, supporting roller bearing, energy storage shaft, transmission shaft, forward synchronizer, forward gear, coupling sleeve, spline hub, reverse synchronizer, reverse gear and idler shaft are all arranged in the housing; The clutch is arranged outside the housing.

3. The mechanical energy storage elevator system based on flywheel energy storage according to claim 1, characterized in that: The guide wheel and the driving wheel are arranged at the same height.

4. The mechanical energy storage elevator system based on flywheel energy storage according to claim 1, characterized in that: The flywheel is a magnetic levitation flywheel.

5. The mechanical energy storage elevator system based on flywheel energy storage according to claim 1, characterized in that: The flywheel is arranged in the vacuum chamber.

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