Spiral escalator comprising a handrail drive

Abstract

The application discloses a spiral escalator driven by a handrail belt driving device, which comprises steps, a driving host, a step driving main shaft, a driving chain connecting the step driving main shaft and the driving host, a handrail shaft for driving the movement of the handrail belt, at least one transition shaft arranged between the step driving main shaft and the handrail shaft, the steps are arranged in a fan shape, and the steps arranged in the fan shape are mutually engaged; the transition shaft at least comprises an outer transition shaft close to the outer handrail belt and an inner transition shaft close to the inner handrail belt; the step driving main shaft rotates synchronously with the inner transition shaft, and the handrail shaft rotates synchronously with the outer transition shaft; the steps and the outer handrail belt and the inner handrail belt are simultaneously started and stopped; and the length of the outer handrail belt is greater than that of the inner handrail belt. The spiral escalator can meet the special requirements that the handrail belt needs to be laterally curved and the angular velocities of two sides are the same and the linear velocities are different.

Description

[0001] This application is a divisional application of the invention patent application filed on November 29, 2018, with application number 2018114395298 and invention title "A Handrail Belt Drive Device for a Spiral Escalator". Technical Field

[0002] This invention relates to the field of escalator technology, and more specifically to a spiral escalator consisting of a handrail belt drive device. Background Technology

[0003] With social development and progress, escalators have become widely used and an indispensable piece of equipment for people's convenient lives. However, most escalators currently available are linear escalators.

[0004] The working principle and components of a spiral escalator are similar to those of a linear escalator. Spiral escalators can provide passengers with upward or downward services. There are handrails on both sides of the steps for passengers to hold onto. Both the handrails and the steps run along a spiral trajectory.

[0005] For conventional linear escalators, the handrail belt drive typically employs a method where a sprocket on the stair drive shaft drives the handrail shaft via a chain, which in turn drives the friction wheels or linear roller transmission devices at both ends of the handrail shaft, which in turn drive the handrail belt. In this structure, the axis of the stair drive shaft is completely parallel to the axis of the handrail drive shaft, the drive chain is parallel to the surfaces of the two friction wheels or the linear roller transmission device, and the handrail belts on both sides of the steps maintain a constant speed. Therefore, this structure cannot currently meet the specific requirements of spiral escalators for their handrail belts. Summary of the Invention

[0006] In view of this, in order to solve the problems of the prior art, the present invention provides a spiral escalator that can meet the special requirements of the spiral escalator handrail belt being both laterally bent and having the same angular velocity on both sides but different linear velocities. Moreover, the steps and the handrail belts on both sides can start and stop simultaneously, ensuring the safety of riding the escalator.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A handrail drive device for a spiral escalator includes a drive unit, a step drive shaft, a drive chain connecting the step drive shaft and the drive unit, and a handrail shaft for driving the handrail belt. At least one transition shaft is provided between the step drive shaft and the handrail shaft. The transition shaft includes at least an outer transition shaft near the outer handrail belt and an inner transition shaft near the inner handrail belt. The connection between the outer and inner transition shafts is a universal joint. The step drive shaft and the inner transition shaft rotate synchronously via an inner transition chain. The handrail shaft and the outer transition shaft rotate synchronously via an outer transition chain. The side of the handrail shaft near the outer handrail belt has an outer handrail belt drive mechanism, and the side of the handrail shaft near the inner handrail belt has an inner handrail belt drive mechanism. A drive sprocket, cooperating with a drive chain, is located on the inner drive sprocket of the step drive main shaft. The drive chain, driven by the main drive unit, rotates the step drive main shaft. On one hand, the rotation of the step drive main shaft moves the steps. On the other hand, the inner transition shaft on the transition shaft rotates synchronously with the step drive main shaft via an inner transition chain, and the outer transition shaft rotates synchronously with the handrail shaft via an outer transition chain. Therefore, the rotation of the step drive main shaft drives the rotation of the inner transition shaft. The transition shaft is a universal joint, meaning there is a universal structure between the inner and outer transition shafts. The rotation of the inner transition shaft drives the rotation of the outer transition shaft, which in turn drives the handrail shaft. The rotation of the outer and inner handrail belt drive mechanisms at both ends of the handrail shaft achieves synchronous operation of the handrail belt and the steps. While transmitting torque, it can also change the axial angle of the handrail shaft output section, allowing the handrail belt drive sprocket or friction wheel to adapt to the lateral bending changes of the handrail belt.

[0009] Preferably, the outer handrail drive mechanism includes an outer handrail drive sprocket, a friction wheel or linear roller transmission device that drives the outer handrail belt, and an outer handrail drive chain connecting the outer handrail drive sprocket and the friction wheel or linear roller transmission device. The inner handrail drive mechanism includes an inner handrail drive sprocket, a friction wheel or linear roller transmission device that drives the inner handrail belt, and an inner handrail drive chain connecting the inner handrail drive sprocket and the friction wheel or linear roller transmission device. The above describes how the handrail shaft drives the handrail drive sprocket to rotate, which in turn drives the friction wheel or linear roller transmission device in contact with the handrail belt via the handrail drive chain, thereby moving the corresponding handrail belt.

[0010] More preferably, the diameter of the outer handrail drive sprocket is larger than the diameter of the inner handrail drive sprocket. Since the length of the outer handrail is definitely greater than that of the inner handrail, the linear velocities of the outer and inner handrail drive sprockets will certainly be different during operation. However, to ensure that the angular velocities of the outer and inner handrail drive sprockets are the same, the diameter of the outer handrail drive sprocket is larger than that of the inner handrail drive sprocket. The specific difference or ratio between the diameters of the outer and inner handrail drive sprockets is mainly determined based on the shape of the fan-shaped steps. By installing handrail drive sprockets of two different radii at both ends of the handrail shaft, two handrail running speeds are achieved, thus meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocities on both sides while having different linear velocities.

[0011] Preferably, the outer handrail belt drive mechanism includes an outer friction wheel that drives the outer handrail belt to move, and the inner handrail belt drive mechanism includes an inner friction wheel that drives the inner handrail belt to move. The above describes how the handrail shaft drives the friction wheels on both sides to rotate, and the friction wheels contact the handrail belt, thereby driving the corresponding handrail belt to move.

[0012] More preferably, the diameter of the outer friction wheel is larger than the diameter of the inner friction wheel. By installing friction wheels of two different radii at both ends of the handrail shaft, two handrail belt operating speeds are achieved, thereby meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocity on both sides but different linear velocities.

[0013] Preferably, the axis of the handrail shaft is perpendicular to the inner and outer handrail belts located above it. That is, the rotation surface of the drive sprocket or friction wheel needs to be parallel to the handrail belt located above it, so as to facilitate the placement of the handrail belt drive component in accordance with the direction of the handrail belt, so as to achieve the purpose of driving the handrail belt to move.

[0014] Preferably, the step drive spindle is parallel to the inner transition shaft, the handrail shaft is parallel to the outer transition shaft, the inner transition chain is perpendicular to the step drive spindle and the inner transition shaft, and the outer transition chain is perpendicular to the handrail shaft and the outer transition shaft.

[0015] Preferably, the step drive sprocket, the inner handrail drive sprocket or the inner friction wheel, and the outer handrail drive sprocket or the outer friction wheel have the same angular velocity during operation. The step drive sprocket, the inner handrail drive sprocket, and the outer handrail drive sprocket are all driven by the same power source. Ensuring that all three have the same angular velocity guarantees the synchronous operation of the steps and the inner and outer handrails. Furthermore, by setting different sizes between the inner and outer handrail drive sprockets or the inner and outer friction wheels, different linear velocities are ensured.

[0016] Preferably, the steps of the spiral escalator are arranged in a fan shape, and the interlocking of the fan-shaped steps is necessary to ensure the operation of the spiral escalator.

[0017] More preferably, the two ends of the step drive spindle are provided with step drive sprockets, including an inner step drive sprocket located on the inside and an outer step drive sprocket located on the outside. The diameter of the inner step drive sprocket is smaller than the diameter of the outer step drive sprocket. Similar to the principle of the handrail belt drive mechanism, the inner and outer step drive sprockets have the same angular velocity but different linear velocities. The diameter of the inner step drive sprocket must be smaller than the diameter of the outer step drive sprocket, and the specific setting is related to the shape of the fan-shaped steps.

[0018] Compared with the prior art, the advantages of the present invention are as follows: The handrail belt drive device of the present invention has a reasonable structural design. Based on chain transmission, the structure of a special transition shaft allows it to change the axial angle position of the output part of the handrail shaft while transmitting torque, enabling the handrail belt drive sprocket or friction wheel to adapt to the lateral bending changes of the handrail belt. By installing sprockets or friction wheels of different radii at both ends of the handrail shaft, two handrail belt running speeds are achieved, thereby meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocity on both sides but different linear velocities. Furthermore, the handrail belt drive device of the present invention has the following advantages:

[0019] 1. The initial power for the steps and the handrails on both sides comes from the same drive chain or drive shaft, enabling both to start and stop simultaneously, thus ensuring the safety of riding the elevator.

[0020] 2. The chain drive shaft is divided into a transition shaft and a handrail shaft, and the transition shaft uses a universal joint structure, which can stably transmit torque and facilitate changes in the installation angle of the handrail drive components. Moreover, the angle adjustment range is large, and the applicable spiral staircase rotation radius can be large or small. The structure is simple, reliable, and easy to install.

[0021] 3. By adjusting the ratio of the number of teeth of the sprockets at both ends of the handrail shaft, i.e. the diameter ratio, or the diameter ratio of the friction wheel, the speed of the handrail belts on both sides can be changed, so that the inner and outer spiral handrail belts can obtain the angular velocity that runs synchronously with the spiral steps;

[0022] 4. The handrail drive device of the present invention has a wide range of applications and is suitable for any spiral escalator that ascends in a left-hand or right-hand manner. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of the installation of the handrail belt drive device of the spiral escalator in a preferred embodiment of the present invention (transition shaft not shown);

[0025] Figure 2 This is a top view schematic diagram of the installation of the handrail belt drive device of the spiral escalator in a preferred embodiment of the present invention.

[0026] Figure 3 for Figure 2 Enlarged view of part I in the image;

[0027] The components include: drive unit-1, drive chain-2, step drive spindle-3, drive sprocket-4, transition chain-5, inner transition chain-5a, outer transition chain-5b, inner handrail drive chain-6a, outer handrail drive chain-6b, handrail shaft-7, inner handrail drive sprocket-8a, outer handrail drive sprocket-8b, inner step drive sprocket-9a, outer step drive sprocket-9b, inner handrail belt-10a, outer handrail belt-10b, glass-11, step-12, inner transition shaft-13a, and outer transition shaft-13b. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0030] Reference Figure 1-3 This embodiment of a spiral escalator handrail drive device includes a drive host 1, a step drive main shaft 3, a drive chain 2 connecting the step drive main shaft 3 and the drive host 1, and a handrail shaft 7 for driving the handrail belt. A transition shaft is also provided between the step drive main shaft 3 and the handrail shaft 7. The transition shaft includes an outer transition shaft 13b near the outer handrail belt 10b and an inner transition shaft 13a near the inner handrail belt 10a. The connection between the outer transition shaft 13b and the inner transition shaft 13a is a universal structure, that is, the transition shaft is a universal joint. The step drive main shaft 3 and the inner transition shaft 13a rotate synchronously through the inner transition chain 5a. The handrail shaft 7 and the outer transition shaft 13b rotate synchronously through the outer transition chain 5b. The side of the handrail shaft 7 near the outer handrail belt 10b has an outer handrail belt drive mechanism, and the side of the handrail shaft 7 near the inner handrail belt 10a has an inner handrail belt drive mechanism.

[0031] A drive sprocket 4, which works with the drive chain 2, is installed on the inner drive sprocket 9a of the step drive main shaft 3. The drive chain 2 is driven by the drive host 1, which in turn drives the step drive main shaft 3 to rotate. On the one hand, the rotation of the step drive main shaft 3 drives the step 12 to move. On the other hand, the inner transition shaft 13a on the transition shaft rotates synchronously with the step drive main shaft 3 through the inner transition chain 5a, and the outer transition shaft 13b rotates synchronously with the handrail shaft 7 through the outer transition chain 5b. Therefore, the rotation of the step drive main shaft 3 drives the inner transition shaft 13a to rotate. The transition shaft is a universal joint, that is, there is a universal structure between the inner transition shaft 13a and the outer transition shaft 13b. The rotation of the inner transition shaft 13a drives the outer transition shaft 13b to rotate, which in turn drives the handrail shaft 7 to rotate. The rotation of the outer handrail belt drive mechanism and the inner handrail belt drive mechanism at both ends of the handrail shaft 7 realizes the synchronous operation of the handrail belt and the step 12. While transmitting torque, it can change the axial angle position of the output part of the handrail shaft 7, allowing the handrail belt drive sprocket or friction wheel to adapt to the lateral bending changes of the handrail belt.

[0032] The outer handrail drive mechanism in this embodiment includes an outer handrail drive sprocket 8b, a friction wheel or linear roller transmission device that drives the outer handrail belt 10b, and an outer handrail drive chain 6b connecting the outer handrail drive sprocket 8b and the friction wheel or linear roller transmission device. The inner handrail drive mechanism includes an inner handrail drive sprocket 8a, a friction wheel or linear roller transmission device that drives the inner handrail belt 10a, and an inner handrail drive chain 6a connecting the inner handrail drive sprocket 8a and the friction wheel or linear roller transmission device. The handrail shaft 7 drives the handrail drive sprocket to rotate, which in turn drives the friction wheel or linear roller transmission device in contact with the handrail belt via the handrail drive chain, thereby driving the corresponding handrail belt to move. Figure 1-2 As shown.

[0033] like Figure 1 As shown, the diameter of the outer handrail drive sprocket 8b is larger than the diameter of the inner handrail drive sprocket 8a. Since the length of the outer handrail 10b is definitely greater than the length of the inner handrail 10a, the linear velocities of the outer handrail drive sprocket 8b and the inner handrail drive sprocket 8a will definitely be different during operation. However, to ensure that the angular velocities of the outer handrail drive sprocket 8b and the inner handrail drive sprocket 8a are the same, the diameter of the outer handrail drive sprocket 8b is larger than the diameter of the inner handrail drive sprocket 8a. The specific difference or ratio between the diameters of the outer handrail drive sprocket 8b and the inner handrail drive sprocket 8a is mainly determined based on the shape of the fan-shaped steps. By installing two handrail drive sprockets of different radii at both ends of the handrail shaft 7, two handrail belt operating speeds are achieved, thus meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocity on both sides but different linear velocities.

[0034] In some other embodiments, the outer handrail drive mechanism includes an outer friction wheel that drives the outer handrail belt 10b, and the inner handrail drive mechanism includes an inner friction wheel that drives the inner handrail belt 10a. That is, friction wheels can be used instead of the handrail drive sprockets and chains in the above embodiments. The handrail shaft 7 drives the friction wheels on both sides to rotate, and the friction wheels contact the handrail belts, thereby driving the corresponding handrail belts to move. Similarly, the diameter of the outer friction wheel is larger than the diameter of the inner friction wheel. By installing friction wheels of two different radii at both ends of the handrail shaft 7, two handrail belt operating speeds are achieved, thus meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocity but different linear velocity on both sides.

[0035] The steps 12 of the spiral escalator are arranged in a fan shape. The interlocking of these fan-shaped steps 12 ensures the operation of the spiral escalator. Both ends of the step drive shaft 3 are equipped with step drive sprockets, including an inner step drive sprocket 9a on the inside and an outer step drive sprocket 9b on the outside. The diameter of the inner step drive sprocket 9a is smaller than the diameter of the outer step drive sprocket 9b. Similar to the principle of the handrail drive mechanism, the inner step drive sprocket 9a and the outer step drive sprocket 9b have the same angular velocity but different linear velocities. Therefore, the diameter of the inner step drive sprocket 9a must be smaller than the diameter of the outer step drive sprocket 9b.

[0036] like Figure 2 As shown, the axis of the handrail shaft 7 is perpendicular to the inner handrail belt 10a and the outer handrail belt 10b located above it. That is, the rotating surface of the handrail belt drive sprocket or friction wheel needs to be parallel to the handrail belt located above it, so as to arrange the handrail belt drive component in accordance with the direction of the handrail belt, so as to achieve the purpose of driving the handrail belt to move.

[0037] The step drive main shaft 3 is parallel to the inner transition shaft 13a, the handrail shaft 7 is parallel to the outer transition shaft 13b, the inner transition chain 5a is perpendicular to the step drive main shaft 3 and the inner transition shaft 13a, and the outer transition chain 5b is perpendicular to the handrail shaft 7 and the outer transition shaft 13b.

[0038] The step drive sprocket, the inner handrail drive sprocket 8a or the inner friction wheel, and the outer handrail drive sprocket 8b or the outer friction wheel all have the same angular velocity during operation. The step drive sprocket, the inner handrail drive sprocket 8a, and the outer handrail drive sprocket 8b are all driven by the same power source. Ensuring that all three have the same angular velocity is crucial for the synchronous operation of the steps and the inner and outer handrails. Furthermore, by setting different diameters between the inner handrail drive sprocket 8a and the outer handrail drive sprocket 8b, or between the inner and outer friction wheels, different linear velocities are ensured.

[0039] In this embodiment, the chain can also be replaced by other transmission devices such as belts or tracks, for example... Figure 1-2 As shown, where there is a chain, a corresponding sprocket needs to be set so that the chain can drive the corresponding shaft to rotate.

[0040] In this embodiment, the handrail drive device adds a transition shaft between the step drive main shaft 3 and the handrail shaft 7. This transition shaft includes two sub-shafts: an inner transition shaft 13a and an outer transition shaft 13b. The inner transition shaft 13a and the outer transition shaft 13b are connected by a universal joint. By changing the angle between the axes of the sub-shafts through the universal joint structure, the output direction of the handrail drive chain 5b is changed, making the handrail shaft 7 nearly perpendicular to the handrail belt, which facilitates the placement of the handrail drive device. This structure requires two stages of handrail drive chains: the inner transition chain 5a and the outer transition chain 5b. In other embodiments, multiple transition shafts can be provided to accommodate situations where the angle between the step drive main shaft 3 and the handrail shaft 7 is too large. Alternatively, the transition shaft can be divided into multiple sub-shafts to allow the handrail shaft 7 to better match its corresponding handrail belt.

[0041] The handrail drive device of the spiral escalator of this invention includes a multi-segment handrail shaft and other shafts, sprockets, chains and other transmission structures or gear transmissions. The split shafts are connected by a universal joint. Through the multi-segment shafts and the universal joint, torque is transmitted and the axial direction angle of the output shaft or input shaft can be changed, so that the axial direction angle of the sprocket and chain power transmission path changes. Then, the handrail belt is driven by a pressure roller transmission device with two sprockets of different sizes or by a friction wheel to achieve two handrail belt running speeds.

[0042] The present invention discloses a handrail belt drive device for a spiral escalator. Its structure is reasonably designed. Based on chain transmission, it uses a special transition shaft structure to change the axial angle position of the output part of the handrail shaft while transmitting torque. This allows the handrail belt drive sprocket or friction wheel to adapt to the lateral bending changes of the handrail belt. By installing sprockets or friction wheels of two different radii at both ends of the handrail shaft, two handrail belt running speeds are achieved, thereby meeting the special requirements of the spiral escalator handrail belt to both bend laterally and have the same angular velocity on both sides but different linear velocities. Furthermore, the handrail drive device for a spiral escalator of the present invention has the following advantages: 1. The initial power of the steps and the handrails on both sides comes from the same drive chain or drive shaft, enabling both to start and stop simultaneously, ensuring the safety of riding the escalator; 2. The chain drive shaft is divided into a transition shaft and a handrail shaft, and the transition shaft uses a universal joint structure, which can stably transmit torque and facilitate changes in the installation angle of the handrail drive components. Moreover, the angle adjustment range is large, and the applicable spiral staircase rotation radius can be large or small. The structure is simple and reliable, and the installation is convenient; 3. The speed of the handrails on both sides can be changed by adjusting the ratio of the number of teeth of the sprockets at both ends of the handrail shaft, i.e., the diameter ratio or the friction wheel diameter ratio, so that the inner and outer spiral handrails can obtain the angular velocity that runs synchronously with the spiral steps; 4. The handrail drive device of the present invention has a wide range of applications and is suitable for any spiral escalator that ascends in a left-hand or right-hand direction.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A spiral escalator comprising a handrail belt drive device, characterized in that, The system includes steps, a drive unit, a step drive spindle, a drive chain connecting the step drive spindle and the drive unit, a handrail shaft for driving the handrail belt, and at least one transition shaft disposed between the step drive spindle and the handrail shaft. The steps are arranged in a fan shape and mesh with each other. The transition shaft includes at least an outer transition shaft near the outer handrail belt and an inner transition shaft near the inner handrail belt, and the outer and inner transition shafts are connected by a universal joint. The step drive spindle rotates synchronously with the inner transition shaft, and the handrail shaft rotates synchronously with the outer transition shaft. The steps, the outer handrail belt, and the inner handrail belt start and stop synchronously. The length of the outer handrail belt is greater than the length of the inner handrail belt.

2. The spiral escalator according to claim 1, characterized in that, Multiple transition shafts are provided between the step drive main shaft and the handrail shaft.

3. The spiral escalator according to claim 1 or 2, characterized in that, The transition axis includes multiple sub-axis, one of which is the inner transition axis and the other is the outer transition axis.

4. The spiral escalator according to claim 1, characterized in that, An inner transition chain is provided between the step drive main shaft and the inner transition shaft, and the step drive main shaft and the inner transition shaft rotate synchronously through the inner transition chain; an outer transition chain is provided between the handrail shaft and the outer transition shaft, and the handrail shaft and the outer transition shaft rotate synchronously through the outer transition chain.

5. The spiral escalator according to claim 1, characterized in that, The armrest shaft has an outer armrest belt drive mechanism on the side near the outer armrest belt; the armrest shaft has an inner armrest belt drive mechanism on the side near the inner armrest belt; the outer armrest belt drive mechanism includes an outer armrest belt drive sprocket, the inner armrest belt drive mechanism includes an inner armrest belt drive sprocket, and the diameter of the outer armrest belt drive sprocket is larger than the diameter of the inner armrest belt drive sprocket.

6. The spiral escalator according to claim 5, characterized in that, The difference between the diameter of the outer handrail drive sprocket and the diameter of the inner handrail drive sprocket is determined according to the shape of the fan-shaped steps.

7. The spiral escalator according to claim 5, characterized in that, The angular velocities of the step drive sprocket, the inner handrail drive sprocket, and the outer handrail drive sprocket are the same during operation; the linear velocities of the inner step drive sprocket and the outer step drive sprocket are different during operation.

8. The spiral escalator according to claim 1, characterized in that, The outer handrail belt drive mechanism includes an outer friction wheel that drives the outer handrail belt to move, and the inner handrail belt drive mechanism includes an inner friction wheel that drives the inner handrail belt to move; the diameter of the outer friction wheel is larger than the diameter of the inner friction wheel.

9. The spiral escalator according to claim 4, characterized in that, The axis of the handrail shaft is perpendicular to the inner handrail belt and the outer handrail belt; the step drive main shaft is parallel to the inner transition shaft, the handrail shaft is parallel to the outer transition shaft, the inner transition chain is perpendicular to the step drive main shaft and the inner transition shaft, and the outer transition chain is perpendicular to the handrail shaft and the outer transition shaft.

10. The spiral escalator according to claim 1, characterized in that, The ladder drive spindle is provided with ladder drive sprockets at both ends. The ladder drive sprockets include an inner ladder drive sprocket located on the inside and an outer ladder drive sprocket located on the outside. The diameter of the inner ladder drive sprocket is smaller than the diameter of the outer ladder drive sprocket.

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