Escalator with high speed inclined section

An escalator with a high speed inclined section comprising:

• a main frame;
• a main track on the main frame and forming a loop track including an upper landing section, a lower landing section, an intermediate inclined section situated between the upper landing section and the lower landing section, an upper curved section situated between the upper landing section and the intermediate inclined section, and a lower curved section situated between the lower landing section and the intermediate inclined section;
• a plurality of steps, each of the steps having a step link roller shaft and a step link roller rotatable around the step link roller shaft for rolling on the main track, the steps being connected in an endless fashion to circulate along the loop track;
• a plurality of link mechanisms, each link mechanism having a first link rotatably connected to the step link roller shaft and a second link rotatably connected to a link connection point of the first link and the step link roller shaft of an adjacent step for varying distance between the step link roller shafts through folding and unfolding;
• a rotatable auxiliary roller in each of the link mechanisms;
• and
• an auxiliary track on the main frame for guiding movement of the auxiliary roller so the link mechanism folds and unfolds, changing movement speed of the steps in an upper speed changing section and a lower speed changing section, wherein, when axes of adjacent step link roller shafts are in the upper speed changing section, and, assuming that relative coordinates in horizontal and vertical directions of the axes of the step link roller shafts are (Xs, Ys), that radius of curvature of a movement locus of the axis of the step link roller shaft in the upper curved section is R1, that an inclination angle of the intermediate inclined section is αm, and that a point vertically spaced apart by −R1 from a border point, which is in the movement locus of the axis of the step link roller shaft and between the upper landing section and the upper curved section, is the origin of a coordinate system, when Ys is in the following range:
• R1 cos αm−{(R1 cos αm)2+(2R1 sin αm·Xs−Xs2)}≦YS<−R1+(R12−Xs2),
• a relationship between relative positions of adjacent step link rollers in the upper speed changing section is expressed as
• X1=[−p1q1+{(p1q1)2−(p12+1)(q12−R12)}]/(p12+1),
• Y1=(R12−X12),
• X2=X1+Xs,
• and
• Y2=Y1+YS
• where, p1=Xs/Ys, and q1=(Xs2+Ys2)/2Ys,
• a horizontal coordinate of the axis of the upper-step-side step link roller shaft is X1, a vertical coordinate of the axis of the upper-step-side step link roller shaft is Y1, a horizontal coordinate of the axis of the lower-step-side step link roller shaft is X2, and a vertical coordinate of the axis of the lower-step-side step link roller shaft is Y2, and position of the link connection point is expressed by
• XM=X1+L1 cos {β−γ},
• and
• YM=Y1+L1 sin {β−γ}
• where
• β=tan−1{(Y1−Y2)/(X1−X2)},
• γ=cos−1{(L12−L22+W2)/2L1W},
• W={(X1−X2)2+(Y1−Y2)2},
• XM is horizontal coordinate of the link connection point;
• YM is vertical coordinate of the link connection point;
• L1 is distance from the axis of the upper-step-side step link roller shaft to the link connection point, and
• L2 is distance from the axis of the lower-step-side step link roller shaft to the link connection point.

An escalator with a high speed inclined section comprising:

• a main frame;
• a main track on the main frame and forming a loop track including an upper landing section, a lower landing section, an intermediate inclined section situated between the upper landing section and the lower landing section, an upper curved section situated between the upper landing section and the intermediate inclined section, and a lower curved section situated between the lower landing section and the intermediate inclined section;
• a plurality of steps, each of the steps having a step link roller shaft and a step link roller rotatable around the step link roller shaft for rolling on the main track, the steps being connected in an endless fashion to circulate along the loop track;
• a plurality of link mechanisms, each like mechanism having a first link rotatably connected to the step link roller shaft and a second link rotatably connected to a link connection point of the first link and the step link roller shaft of an adjacent step for varying distance between the step link roller shafts through folding and unfolding;
• a rotatable auxiliary roller in each of the link mechanisms;
• and
• an auxiliary track on the main frame for guiding movement of the auxiliary roller so the link mechanism folds and unfolds, changing movement speed of the steps in a lower speed changing section and a lower speed changing section, wherein, when axes of adjacent step link roller shafts are in the upper speed changing section, and, assuming that relative coordinates in horizontal and vertical directions of the axes of the step link roller shafts are (Xs, Ys), that radius of curvature of a movement locus of the axis of the step link roller shaft in the upper curved section is R1, that an inclination angle of the intermediate inclined section is αm, and that a point vertically spaced apart by −R1 from a border point, which is in the movement locus of the axis of the step link roller shaft and between the upper landing section and the upper curved section, is the origin of a coordinate system, when Ys is in the following range:
• −Xs tan αm≦Ys<R1 cos αm−{(R1 cos αm)2+{2R1 sin αm·Xs−Xs2)}
• a relationship between relative positions of adjacent step link rollers in the upper speed changing section can be expressed by the following equations:
• X1=[−p2s−{(p2s)2−(p22+1)(s2−R2)}]/(p22+1),
• Y1=(R12−X12),
• X2=X1+XS,
• and
• Y2=Y1+Ys
• where, p2=−tan αm, q2=R1(cos αm+sin αm·tan αm), and s=p2Xs+q2−Ys),
• a horizontal coordinate of the axis of the upper-step-side step link roller shaft is X1, a vertical coordinate of the axis of the upper-step-side step link roller shaft is Y1, a horizontal coordinate of the axis of the lower-step-side step link roller shaft is X2, and a vertical coordinate of the axis of the lower-step-side step link roller shaft is Y2, and position of the link connection point is expressed by:
• XM=X1+L1 cos {β−γ},
• and
• YM=Y1+L1 sin {β−γ}
• where
• β=tan−1{(Y1−Y2)/(X1−X2)},
• γ=cos−1{(L12−L22+W2)/2L1W},
• W={(X1−X2)2+(Y1−Y2)2},
• XM is horizontal coordinate of the link connection point,
• YM is vertical coordinate of the link connection point,
• L1 is distance from the axis of the upper-step-side step link roller shaft to the link connection point, and
• L2 is distance from the axis of the lower-step-side step link roller shaft to the link connection point.

An escalator with a high speed inclined section comprising:

• a main frame;
• a main track on the main frame and forming a loop track including an upper landing section, a lower landing section, an intermediate inclined section situated between the upper landing section and the lower landing section, an upper curved section situated between the upper landing section and the intermediate inclined section, and a lower curved section situated between the lower landing section and the intermediate inclined section;
• a plurality of steps, each of the steps having a step link roller shaft and a step link roller rotatable around the step link roller shaft for rolling on the main track, the steps being connected in an endless fashion to circulate along the loop track;
• a plurality of link mechanisms, each like mechanism having a first link rotatably connected to the step link roller shaft and a second link rotatably connected to a link connection point of the first link and the step link roller shaft of an adjacent step for varying distance between the step link roller shafts through folding and unfolding;
• a rotatable auxiliary roller in each of the link mechanisms;
• and
• an auxiliary track on the main frame for guiding movement of the auxiliary roller so the link mechanism folds and unfolds, changing movement speed of the steps in an upper speed changing section and a lower speed changing section, wherein, when axes of adjacent step link roller shafts are in the lower speed changing section, and, assuming that relative coordinates in horizontal and vertical directions of the axes of the step link roller shafts are (Xs, Ys), that radius of curvature of a movement locus of the axis of the step link roller shaft in the lower curved section is R2, and that a point vertically spaced apart by R2 from a border point which is in the movement locus of the axis of the step link roller shaft and between the lower landing section and the lower curved section, is the origin of a coordinate system, when Ys is in the following range
• −R2+(R22−Xs2)≦Ys<0,
• a relationship between relative positions of adjacent step link rollers in the lower speed changing section is expressed as:
• X1=−Xs+(−2R2·Ys−Ys2),
• Y1=−(R22−X12),
• X2=X1+XS,
• and
• where a horizontal coordinate of the axis of an upper-step-side step link roller shaft is X1, a vertical coordinate of the axis of the upper-step-side step link roller shaft is Y1, a horizontal coordinate of the axis of the lower-step-side step link roller shaft is X2, and a vertical coordinate of the axis of the lower-step-side step link roller shaft is Y2 and position of a link connection point is expressed by
• XM=X1+L1 cos {β−γ},
• and
• YM=Y1+L1 sin {β−γ}
• where
• β=tan−1{(Y1−Y2)/(X1−X2)},
• γ=cos−1{(L12−L22+W2)/2L1W},
• W={(X1−X2)2+(Y1−Y2)2},
• XM is horizontal coordinate of the link connection point,
• YM is vertical coordinate of the link connection point,
• L1 is distance from the axis of the upper-step-side step link roller shaft to the link connection point, and
• L2 is distance from the axis of the lower-step-side step link roller shaft to the link connection point.

An escalator with a high speed inclined section comprising:

• a main frame;
• a main track on the main frame and forming a loop track including an upper landing section, a lower landing section, an intermediate inclined section situated between the upper landing section and the lower landing section, an upper curved section situated between the upper landing section and the intermediate inclined section, and a lower curved section situated between the lower landing section and the intermediate inclined section;
• a plurality of steps, each of the steps having a step link roller shaft and a step link roller rotatable around the step link roller shaft for rolling on the main track, the steps being connected in an endless fashion to circulate along the loop track;
• a plurality of link mechanisms, each link mechanism having a first link rotatably connected to the step link roller shaft and a second link rotatably connected to a link connection point of the first link and the step link roller shaft of an adjacent step for varying distance between the step link roller shafts through folding and unfolding;
• a rotatable auxiliary roller in each of the link mechanisms;
• and
• an auxiliary track on the main frame for guiding movement of the auxiliary roller so the link mechanism folds and unfolds, changing movement speed of the steps in an upper speed changing section and a lower speed changing section, wherein, when axes of adjacent step link roller shafts are in the lower speed changing section, and, assuming that relative coordinates in horizontal and vertical directions of the axes of the step link roller shafts are (Xs, Ys), that radius of curvature of a movement locus of the axis of the step link roller shaft in the lower curved section is R2, that an inclination angle of the intermediate inclined section is αm, and that a point vertically spaced apart by −R1 from a border point, which is in the movement locus of the axis of the step link roller shaft and between the lower landing section and the lower curved section, is the origin of a coordinate system, when Ys is in the following range:
• R2 cos αm−{(R2 cos αm)2+(2R2 sin αm·Xs−Xs2)}≦YS<−R2+(R22−Xs2),
• a relationship between relative positions of adjacent step link rollers in the lower speed changing section is expressed as
• X1=[−p3q3+{(p3q3)2−(p32+1)(q32−R22)}]/(p32+1),
• Y1=(R22−X12),
• X2=X1+Xs,
• and
• Y2=Y1+YS
• where, P3=Xs/Ys, and q3=(Xs2+Ys2)/2Ys,
• a horizontal coordinate of the axis of the upper-step-side step link roller shaft is X1, a vertical coordinate of the axis of the upper-step-side step link roller shaft is Y1, a horizontal coordinate of the axis of the lower-step-side step link roller shaft is X2, and a vertical coordinate of the axis of the lower-step-side step link roller shaft is Y2, and position of the link connection point is expressed by
• XM=X1+L1 cos {β−γ},
• and
• YM=Y1+L1 sin {β−γ}
• where
• β=tan−1{(Y1−Y2)/(X1−X2)},
• γ=cos−1{(L12−L22+W2)/2L1W},
• W={(X1−X2)2+(Y1+Y2)2},
• XM is horizontal coordinate of the link connection point;
• YM is vertical coordinate of the link connection point;
• L1 is distance from the axis of the upper-step-side step link roller shaft to the link connection point, and
• L2 is distance from the axis of the lower-step-side step link roller shaft to the link connection point.

An escalator with a high speed inclined section comprising:

• a main frame;
• a main track on the main frame and forming a loop track including an upper landing section, a lower landing section, an intermediate inclined section situated between the upper landing section and the lower landing section, an upper curved section situated between the upper landing section and the intermediate inclined section, and a lower curved section situated between the lower landing section and the intermediate inclined section;
• a plurality of steps, each of the steps having a step link roller shaft and a step link roller rotatable around the step link roller shaft for rolling on the main track, the steps being connected in an endless fashion to circulate along the loop track;
• a plurality of link mechanisms, each like mechanism having a first link rotatably connected to the step link roller shaft and a second link rotatably connected to a link connection point of the first link and the step link roller shaft of an adjacent step for varying distance between the step link roller shafts through folding and unfolding;
• a rotatable auxiliary roller in each of the link mechanisms;
• and
• an auxiliary track on the main frame for guiding movement of the auxiliary roller so the link mechanism folds and unfolds, changing movement speed of the steps in a lower speed changing section and a lower speed changing section, wherein, when axes of adjacent step link roller shafts are in the lower speed changing section, and, assuming that relative coordinates in horizontal and vertical directions of the axes of the step link roller shafts are (Xs, Ys), that radius of curvature of a movement locus of the axis of the step link roller shaft in the upper curved section is R2, that an inclination angle of the intermediate inclined section is αm, and that a point vertically spaced apart by R2 from a border point, which is in the movement locus of the axis of the step link roller shaft and between the lower landing section and the lower curved section, is the origin of a coordinate system, when Ys is in the following range:
• −Xs tan αm≦Ys<R2 cos αm−{(R2 cos αm)2+{2R2 sin αm·Xs−Xs2)}
• a relationship between relative positions of adjacent step link rollers in the lower speed changing section can be expressed by the following equations:
• X1={−(p4q4+p4Ys+Xs)+A1}/(p42+1),
• A1=(p4q4+p4Ys+Xs)2−(p42+1){(q4+Ys)2−R22+Xs2},
• Y1=p4X1+q4,
• X2=X1+XS,
• and
• Y2=Y1+Ys
• where, p4=−tan αm, and q4=−R2(cos αm+sin αm·tan αm),
• a horizontal coordinate of the axis of the upper-step-side step link roller shaft is X1, a vertical;
• coordinate of the axis of the upper-step-side step link roller shaft is Y1, a horizontal coordinate of the axis of the lower-step-side step link roller shaft is X2, and a vertical coordinate of the axis of the lower-step-side step link roller shaft is Y2, and position of the link connection point is expressed by:
• XM=X1+L1 cos {β−γ},
• and
• YM=Y1+L1 sin {β−γ}
• where
• β=tan−1{(Y1−Y2)/(X1−X2)},
• γ=cos−1{(L12−L22+W2)/2L1W},
• W={(X1−X2)2+(Y1−Y2)2},
• XM is horizontal coordinate of the link connection point,
• YM is vertical coordinate of the link connection point,
• L1 is distance from the axis of the upper-step-side step link roller shaft to the link connection point, and
• L2 is distance from the axis of the lower-step-side step link roller shaft to the link connection point.