Handrail belt tension device for escalator

Patent metadata

Field	Value
Publication number	US-10745248-B2
Application number	US-201916268130-A
Country	US
Kind code	B2
Filing date	Feb 5, 2019
Priority date	Feb 6, 2018
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A handrail belt tension device is provided for an escalator having a truss and an annular handrail belt rotatable relative to the truss. The handrail belt tension device includes: a base plate on which a roller for supporting the handrail belt is provided, and a guiding mechanism which is fixed to the truss. The base plate is connected to the guiding mechanism, and rotatable and translatable relative to the guiding mechanism so as to adjust the handrail belt by the base plate thereby the handrail belt can be in a well tensioned status. The handrail belt tension device ensures that the tension device is installed in a more accurate position, making it easier to adjust the tensioning force of the handrail belt, reducing the time for adjusting the handrail belt, and increasing the service life of the handrail belt.

First claim

What is claimed is:

1. A handrail belt tension device for an escalator, the escalator comprising a truss and an annular handrail belt rotatable relative to the truss, wherein the handrail belt tension device comprises:
a base plate on which a roller for supporting the handrail belt is provided; and
a guiding mechanism which is fixed to the truss,
wherein the base plate is connected to the guiding mechanism, and rotatable and translatable relative to the guiding mechanism so as to adjust the handrail belt by the base plate thereby the handrail belt can be in a well tensioned status,
wherein the guiding mechanism comprises a guide rod, and the base plate comprises a first protrusion fixed on the base plate and having a first through hole, and
wherein the first through hole allows the guide rod to pass therethrough so as to allow the first protrusion and the base plate to rotate about the guide rod and translate along the length direction of the guide rod, and after the base plate is adjusted into position, the first protrusion can be fixed to the guide rod by a first fastener.

2. The handrail belt tension device for an escalator according to claim 1 , wherein the base plate can be fixed directly to the truss by at least one second fastener.

3. The handrail belt tension device for an escalator according to claim 1 , wherein the guide rod includes a flat surface extending along the length direction thereof for engaging with the first fastener.

4. The handrail belt tension device for an escalator according to claim 1 , further comprising a tension mechanism including a first part fixed to the truss and a second part movable relative to the first part, the second part being connected to the base plate so as to move the base plate together with it.

5. The handrail belt tension device for an escalator according to claim 4 , wherein the first part includes a bracket fixed to the truss and having a second through hole oriented parallel to the length direction of the guide rod, and the second part includes a tension rod, the second through hole allowing the tension rod to pass therethrough so as to allow the tension rod to rotate relative to the bracket and translate in a direction parallel to the length direction of the guide rod.

6. The handrail belt tension device for an escalator according to claim 5 , wherein the tension rod is fixedly connected to the base plate, and the second part further comprises a ruler having a predetermined length and disposed on the tension rod, and a spring located between the bracket and the ruler such that, the spring is compressed as the ruler moves toward the bracket, and that, a designated edge of the ruler can be substantially aligned with corresponding edge of the bracket when the spring is compressed to a predetermined length, thereby indicating to the operator that the handrail belt is in a reasonably tensioned status.

7. The handrail belt tension device for an escalator according to claim 6 , wherein the base plate further comprises a second protrusion fixed to the base plate for fixed connection with the tension rod.

8. The handrail belt tension device for an escalator according to claim 6 , wherein the tension rod is a threaded rod and can be fixed to the bracket by a nut, and the ruler can be fixed to the threaded rod by a nut.

9. The handrail belt tension device for an escalator according to claim 1 , further comprising a first component fixed to the truss and a second component connected between the first component and the guiding mechanism.

10. The handrail belt tension device for an escalator according to claim 9 , wherein the second component comprises a first connecting part and a second connecting part disposed substantially perpendicular to the first connecting part, the first connecting part and the second connecting part being respectively fixed to the first component and the guiding mechanism by at least one third fastener and at least one fourth fastener, respectively.

11. The handrail belt tension device for an escalator according to claim 10 , wherein the second component further comprises at least one rib connected between the first connecting part and the second connecting part.

12. The handrail belt tension device for an escalator according to claim 10 , wherein the first component is provided with a long slot oriented along the longitudinal direction of the truss, the long slot allowing at least one third fastener to move therein so as to allow the second component to translate along the longitudinal direction of the truss.

13. The handrail belt tension device for an escalator according to claim 12 , wherein the length direction of the guide rod is arranged parallel to the longitudinal direction of the truss.

14. The handrail belt tension device for an escalator according to claim 10 , wherein the first connecting part is provided with at least one first oblong hole corresponding to at least one third fastener and oriented along the width direction of the truss to allow at least one third fastener to move therein so as to allow the second member to translate along the width direction of the truss.

15. The handrail belt tension device for an escalator according to claim 10 , wherein the second connecting part is provided with at least one second oblong hole corresponding to at least one fourth fastener and oriented along the transverse direction of the truss to allow at least one fourth fastener to move therein so as to allow the guiding mechanism to translate along the transverse direction of the truss.

16. An escalator comprising a handrail belt tension device for an escalator according to claim 1 .

Assignees

• Kone Elevators Co Ltd
• Kone Corp

Inventors

• Liu Lining
• Dong Yajun

Classifications

• F16H2007/0806

  Compression coil springs · CPC title

• F16H7/08

  Means for varying tension of belts, ropes or chains  (pulleys of adjustable construction F16H55/52) · CPC title

• B66B23/24

  Handrails (driving gear therefor B66B23/02; tensioning means therefor B66B23/16; preventing jamming thereof by foreign objects B66B29/04; accessories therefor B66B31/02) · CPC title

• B66B23/20 Primary

  for handrails · CPC title

• B66B23/04

  for handrails · CPC title