Escalator with high speed inclinded section

An escalator with a high speed inclined section, comprising:

• a plurality of steps, each step having a tread for carrying a passenger, a riser at a lower-step-side end of the tread, a step link roller shaft, and a step link roller rotatable around the step link roller shaft, the steps being connected together in an endless fashion for circulation;
• a main track which forms 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 and which guides the main track;
• and
• step speed changing means which has 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 and which varies distance between the adjacent steps to vary moving speed of the steps such that a speed change ratio of the moving speed of the steps in the intermediate inclined section, to the moving speed of the steps in the upper and lower landing sections is fixed, wherein, assuming that, when the steps are seen from a side, a point spaced apart horizontally by −r and vertically by −R1 from a border point, which is in a movement locus of an axis of the step link roller shaft and which is between the upper landing section and the upper curved section, is an origin of a coordinate system, and that horizontal and vertical coordinates of a first end M and a second end M′ of a movement locus of the link connection point in a speed changing region of the upper curved section are:
• M (xM, yM), M′(xM′, yM′), then
• xM={r2+L12−(kr−L1)2}/2r,
• yM=R1−(L12xM2),
• xM′=r+R1 sin αm+L1 cos αm, and
• YM′=R1 cos αm−L1 sin αm
• where r distance-between the step link roller shafts in the upper and lower landing sections,
• L1 is the length between the step link roller shaft and the link connection point in the first link,
• k is the speed change ratio, and
• R1 is a radius of curvature of the upper curved section in the movement locus of the axis of the step link roller shaft.

An escalator with a high speed inclined section, comprising:

• a plurality of steps, each step having a tread for carrying a passenger, a riserat a lower-step-side end of the tread, a step link roller shaft, and a step link roller rotatable around the step link roller shaft, the steps being connected together in an endless fashion for circulation;
• a main track which forms 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 and which guides the main track;
• and
• step speed changing means which has 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 and which varies distance between the adjacent steps to vary moving speed of the steps such that a speed change ratio of the moving speed of the steps in the intermediate inclined section, to the moving speed of the steps in the upper and lower landing sections is fixed, wherein, assuming that when the steps are seen from a side, a point spaced apart horizontally by r and vertically by R2 from a border point, which is in movement locus of an axis of the step link roller shaft and which is between the lower landing section and the lower curved section, is an origin of a coordinate system, and that horizontal and vertical coordinates of a first end N and a second end N′ of a line indicating a movement locus of a link connection point in a speed changing region of the lower curved section are:
• N (xN, yN), N′(xN′, yN′), then
• xN=−r+{r2+L12−(kr−L1)2}/2r,
• yN=−R2−(L12−xN2),
• xN′−r−R2 sin αm−(kr−L1) cos αm, and
• YN′=−R2 cos αm+(kr−L1) sin αm
• where r is distance between the step link roller shafts in the upper and lower landing sections,
• L1 is length between the step link roller shaft and the link connection point in the first link,
• k is the speed change ratio, and
• R2 is radius of curvature of the lower curved section in the movement locus of the axis of the step link roller shaft.