Automatic transport device

Patent metadata

Field	Value
Publication number	US-12415709-B2
Application number	US-202318446578-A
Country	US
Kind code	B2
Filing date	Aug 9, 2023
Priority date	Nov 22, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

An automatic transport device includes a first side and a second side opposite to each other, the first side includes a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device, and the second side is provided with: a step driven wheel; a second handrail drive wheel, the handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel; a first tensioning device and a first transmission member, the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension; and a second tensioning device and a second transmission member, the second handrail drive wheel is in transmission connection with the step driven wheel.

First claim

What is claimed is:

1. An automatic transport device, comprising a first side and a second side opposite to each other, the first side being provided with a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device;
wherein, the second side is provided with:
a step driven wheel;
a second handrail drive wheel in transmission connection with the step driven wheel, wherein a handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel;
a first tensioning device and a first transmission member, wherein the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension; and
a second tensioning device and a second transmission member, wherein the second handrail drive wheel is in transmission connection with the step driven wheel through the second transmission member, and the second tensioning device is capable of maintaining the second transmission member in tension during movement of the step driven wheel;
wherein the second tensioning device is a floating gear device acting on the second transmission member, and wherein the floating gear device comprises: a floating body and a first wheel on the floating body, the bottom of the first wheel being wrapped around and supported by the second transmission member, and the floating body being mounted in a track so as to float up and down;
wherein the floating body further comprises a second wheel, the bottom of which is wrapped around and supported by the second transmission member.

2. The automatic transport device according to claim 1 , wherein the second transmission member comprises a first section and a second section extending between the second handrail drive wheel and the step driven wheel respectively, and the first wheel and the second wheel are supported by the first and second sections of the second transmission member respectively.

3. The automatic transport device according to claim 1 , wherein the first and second wheels are arranged vertically up and down.

4. The automatic transport device according to claim 1 , wherein the first and second wheels are located on a first side of the floating body, and a counterweight is provided on a second side of the floating body.

5. The automatic transport device according to claim 1 , wherein the floating body is arranged in a vertically movable manner on a floating device bracket that is fixed to a mounting frame between the second handrail drive wheel and the step driven wheel, and wherein the floating device bracket is mounted at any of a plurality of mounting positions on the mounting frame.

6. The automatic transport device according to claim 5 , wherein the floating device bracket comprises one or more vertically extended guide columns, and the floating body comprises a linear bearing sleeved on the guide column.

7. An automatic transport device, comprising a first side and a second side opposite to each other, the first side being provided with a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device;
wherein, the second side is provided with:
a step driven wheel;
a second handrail drive wheel in transmission connection with the step driven wheel, wherein a handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel;
a first tensioning device and a first transmission member, wherein the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension; and
a second tensioning device and a second transmission member, wherein the second handrail drive wheel is in transmission connection with the step driven wheel through the second transmission member, and the second tensioning device is capable of maintaining the second transmission member in tension during movement of the step driven wheel;
wherein the second tensioning device is a floating gear device acting on the second transmission member, and wherein the floating gear device comprises: a floating body and a first wheel on the floating body, the bottom of the first wheel being wrapped around and supported by the second transmission member, and the floating body being mounted in a track so as to float up and down;
wherein a first guide wheel set is provided between the floating gear device and the second handrail drive wheel, the first guide wheel set comprising a pair of guide wheels respectively engaged with the first and second sections of the second transmission member, and a second guide wheel set is provided between the floating gear device and the step driven wheel, the second guide wheel set comprising another pair of guide wheels respectively engaged with the first and second sections of the second transmission member.

8. The automatic transport device according to claim 7 , wherein respective guide wheels of the first and second guide wheel sets are arranged vertically up and down.

9. The automatic transport device according to claim 7 , wherein upper parts of the respective guide wheels of the first and second guide wheel sets are engaged with the first and second sections of the second transmission member, and positions of the first and second guide wheel sets are arranged such that the first and second sections of the second transmission member are M-shaped.

10. The automatic transport device according to claim 9 , wherein positions of the first guide wheel set, the second guide wheel set and the floating gear device are arranged such that a ratio of a horizontal displacement of the step driven wheel to a vertical displacement of a floating gear device is within a range of 2:1 to 4:1.

11. An automatic transport device, comprising a first side and a second side opposite to each other, the first side being provided with a main drive device, a step drive wheel and a first handrail drive wheel in transmission connection with the main drive device;
wherein, the second side is provided with:
a step driven wheel;
a second handrail drive wheel in transmission connection with the step driven wheel, wherein a handrail of the automatic transport device wraps around the first handrail drive wheel and the second handrail drive wheel;
a first tensioning device and a first transmission member, wherein the first tensioning device is capable of adjusting the movement of the step driven wheel relative to the step drive wheel, thereby maintaining the first transmission member between the step drive wheel and the step driven wheel in tension; and
a second tensioning device and a second transmission member, wherein the second handrail drive wheel is in transmission connection with the step driven wheel through the second transmission member, and the second tensioning device is capable of maintaining the second transmission member in tension during movement of the step driven wheel;
wherein the first transmission member is a step chain wrapping around the step drive wheel and the step driven wheel, and the first tensioning device is a spring mechanism connected to a movable bracket supporting the step driven wheel, and wherein the movable bracket is movable horizontally, and the spring mechanism tends to move the movable bracket and the step driven wheel thereon in a direction away from the step drive wheel.

12. The automatic tran

Assignees

• Otis Elevator Co

Inventors

• Huang Qiping

Classifications

• B66B23/20

  for handrails · CPC title

• B66B23/026

  with a drive or carrying sprocket wheel located at end portions · CPC title

• B66B23/04 Primary

  for handrails · CPC title

• B66B23/16 Primary

  Means allowing tensioning of the endless member · CPC title

• B66B23/06 Primary

  with means synchronising the operation of the steps or the carrying belts and the handrails · CPC title