Conveying chain sprocket and/or deflection chain sprocket having an increased service life

Patent metadata

Field	Value
Publication number	US-9394143-B2
Application number	US-201314649970-A
Country	US
Kind code	B2
Filing date	Dec 2, 2013
Priority date	Dec 7, 2012
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

The invention relates to an escalator with a step belt or to a moving walkway with a plate belt. The step belt or plate belt has a link chain which contains engagement points arranged in succession at theoretically equal engagement spacings. The escalator or moving walkway has a first deflecting region and a second deflecting region with chainwheels. The link chain is arranged to circulate between the deflecting regions and the engagement points engage in tooth gaps of the chainwheels. The chainwheels have a pitch circle with a pitch which is referred to the tooth gaps and corresponds with half an engagement spacing of the link chain.

First claim

The invention claimed is:

1. Escalator ( 1 ) with a step belt ( 7 ) or moving walkway with a plate belt ( 107 ), wherein the step belt ( 7 ) or plate belt ( 107 ) comprises at least one link chain ( 8 , 108 , 208 , 408 ), which contains engagement points ( 27 , 127 , 227 , 327 A, 327 B, 427 ) arranged in succession at theoretically equal engagement spacings (E) and at which link chain ( 8 , 108 , 208 , 408 ) steps ( 9 ) or plates ( 109 ) are arranged, wherein the escalator ( 1 ) or the moving walkway has a first deflecting region ( 5 ) and a second deflecting region ( 6 ) with at least one conveying chainwheel ( 14 , 114 , 214 , 314 A, 314 B), the at least one link chain ( 8 , 108 , 208 , 408 ) is arranged to circulate between the deflecting regions ( 5 , 6 ) and the engagement points ( 27 , 127 , 227 , 327 A, 327 B, 427 ) engage in tooth gaps ( 22 , 122 , 222 , 422 ) of the conveying chainwheel ( 14 , 114 , 214 , 314 A, 314 B) and in a given case in tooth gaps ( 22 , 122 , 222 , 422 ) of at least one deflecting chainwheel arranged in the first deflecting region ( 5 ), characterised in that at least one of the at least one conveying chainwheel ( 14 , 114 , 214 , 314 A, 314 B) and the at least one deflecting chainwheel has a pitch circle ( 23 ) with a pitch (T) which is referred to the tooth gaps ( 22 , 122 , 222 , 422 ) and which corresponds with half an engagement spacing (E) of the link chain ( 8 , 108 , 208 , 408 ).

2. Escalator ( 1 ) or moving walkway according to claim 1 , wherein at least one of the at least one conveying chainwheel ( 14 , 114 , 214 , 314 A, 314 B) and/or deflecting chainwheel has an uneven tooth number.

3. Escalator ( 1 ) or moving walkway according to claim 1 , wherein the at least one link chain ( 8 , 108 , 208 , 408 ) contains chain rollers ( 27 , 127 , 227 , 327 A, 327 B, 427 A, 427 B) which are arranged at link locations ( 26 , 126 ) of the link chain ( 8 , 108 , 208 , 408 ), which chain rollers ( 27 , 127 , 227 , 327 A, 327 B, 427 A, 427 B) form the engagement points ( 27 , 127 , 227 , 327 A, 327 B, 427 ) and which chain rollers ( 27 , 127 , 227 , 327 A, 327 B, 427 A, 427 B) have a defined chain roller width.

4. Escalator ( 1 ) or moving walkway according to claim 3 , wherein the chain rollers ( 427 A, 427 B) of the at least one link chain ( 408 ) are divided into first chain rollers ( 427 A) and second chain rollers ( 427 B) and the first chain rollers ( 427 A) are arranged at the link chain ( 408 ) to be offset relative to the second chain rollers ( 427 B) in alternating sequence so that the first chain rollers ( 427 A) and the second chain rollers ( 427 B) roll on tracks ( 433 , 434 ) adjacent to one another.

5. Escalator ( 1 ) or moving walkway according to claim 4 , wherein the first chain rollers ( 427 A) are guided by way of the conveying chainwheel ( 423 ) and in a given case by way of the deflecting chainwheel and the second chain rollers ( 427 B) are guided by way of a deflecting curve ( 436 ) aligned with the conveying chainwheel ( 423 ) or deflecting chainwheel.

6. Escalator ( 1 ) or moving walkway according to claim 5 , wherein in the respective deflecting region ( 5 , 6 ) the chain rollers ( 427 A, 427 B) lie on a base circle (RG ) of the conveying chainwheel ( 423 ) or of the deflecting chainwheel and the base circle radius (RG ) is smaller than a radius of the deflecting curve ( 436 ).

7. Escalator ( 1 ) or moving walkway according to claim 4 , wherein the first chain rollers ( 427 A) are guided by way of a first conveying chainwheel ( 314 A) and the second chain rollers ( 427 B) are guided by way of a second conveying chainwheel ( 314 B) which is arranged parallel to the first conveying chainwheel ( 314 A) and connected therewith to be secure against relative rotation.

8. Escalator ( 1 ) or moving walkway according to claim 7 , wherein a first pitch circle diameter (R 1 ) of the first conveying chainwheel ( 314 A) is larger than a second pitch circle diameter (R 2 ) of the second conveying chainwheel ( 314 B).

9. Escalator ( 1 ) or moving walkway according to claim 3 , wherein the chain rollers ( 127 ) of the at least one link chain ( 108 ) are formed to be stepped and have a first roller diameter ( 128 ) in a first half of their chain roller width and a second roller diameter ( 129 ), which is smaller with respect to the first roller diameter ( 128 ), in a second half of their chain roller width and the chain rollers ( 127 ) are arranged in alternation, referred to the stepped form thereof, between chain straps ( 131 ) of the link chain ( 108 ) so that a first part of the chain rollers ( 127 ) and a second part of the chain rollers ( 127 ) roll by the first roller diameters ( 128 ) thereof on a parallel first track ( 132 ) and second track ( 133 ) adjacent to one another.

10. Escalator ( 1 ) or moving walkway according to claim 9 , wherein the conveying chainwheel ( 114 ) and, if present, the deflecting chainwheel have a base circle radius (RG), a width of the conveying chainwheel ( 114 ) and of the deflecting chainwheel corresponds with half the chain roller width of the stepped chain rollers ( 127 ) and these chainwheels ( 114 ) are aligned with the first track ( 132 ), and wherein a respective deflecting curve ( 136 ) aligned with the conveying chainwheel ( 114 ) or deflecting chainwheel and with the second track ( 133 ) is present so that in the deflecting regions ( 5 , 6 ) the first roller diameter ( 128 ) lies in alternation at the base circle radius (RG) and at the deflecting curve ( 136 ).

11. Escalator ( 1 ) or moving walkway according to claim 10 , wherein the conveying chainwheel ( 114 ) and in a given case the deflecting chainwheel have a base circle radius (RG) which is smaller than a radius of the deflecting curve ( 136 ).

12. Escalator ( 1 ) or moving walkway according to claim 3 , wherein the chain rollers ( 227 ) of the at least one link chain ( 208 ) are formed to be stepped and have a first roller diameter ( 228 ) in a first half of their chain roller width and a second roller diameter ( 229 ), which is smaller with respect to the first roller diameter ( 228 ), in a second half of their chain roller width and the chain rollers ( 227 ) are arranged with the stepped form thereof alternating between chain straps ( 231 , 231 ′) of the link chain ( 208 ), wherein a first part ( 327 A) of the chain rollers ( 227 ) and a second part ( 327 B) of the chain rollers ( 227 ) roll by the first roller diameters ( 228 ) thereof on a common, centre track ( 232 ), the first part ( 327 A) of the chain rollers ( 227 ) is aligned with respect to the second diameter ( 229 ) thereof with a first side track ( 233 ) extending parallel to the centre track ( 232 ) and the second part ( 327 A) of the chain rollers ( 227 ) is arranged to be aligned with respect to the second diameter ( 229 ) thereof with a second side track ( 234 ) extending parallel to the centre track ( 232 ).

13. Escalator ( 1 ) or moving walkway according to claim 12 , wherein the conveying chainwheel ( 214 , 314 A, 314 B) and in a given case the deflecting chainwheel have a base circle radius (RG ), the width of the conveying chainwheel ( 214 , 314 A, 314 B) or of the deflecting chainwheel corresponds with half the chain roller width of the stepped chain rollers ( 227 ) as well as is arranged to be aligned with one of the two side tracks ( 233 , 234 ), and a respective deflecting curve ( 236 ) aligned with the conveying chainwheel ( 214 , 314 A, 314 B) or deflecting chainwheel and the centre track ( 232 ) is present so that in the deflecting regions ( 5 , 6 ) the first roller diameters (

Assignees

• Inventio Ag

Inventors

• Makovec Christoph
• Matheisl Michael
• Schulz Robert
• Illedits Thomas
• Hauer Uwe

Classifications

• B66B23/10

  Carrying belts · CPC title

• B66B23/022 Primary

  with polygon effect reduction means · CPC title

• B66B21/10

  Moving walkways · CPC title

• B66B23/024

  Chains therefor · CPC title

• B66B21/04

  linear type · CPC title