Mitsubishi Denki Kabushiki Kaisha

Joichi Nakamura

Takashi Yumura

Manabu Ogura

Yasumasa Haruta

Tatsuya Yoshikawa

Shinji Nagaya

An escalator with a high speed inclined section, includes link mechanisms, each of which has a first link with a first end rotatably connected to a step link roller shaft, and a second link, a first end of which is rotatably connected to a middle portion of the first link and a second end of which is rotatably connected to a step link roller shaft of an adjacent step. A rotatable auxiliary roller is located at a second end of the first link.

Escalator with high speed inclined section

In an escalator having a high-speed inclined portion, shape of an auxiliary track in a speed-changing region for steps is determined by finding a positional relationship between step link roller shafts of at least one of the steps and an adjacent step from a step speed profile representing speed of the step link roller shafts as a function of time. The shape of a riser is determined such that the riser aligns with a relative movement locus of the adjacent step by finding a relative positional relationship between the step and the adjacent step from the step speed profile.

Sloped part high-speed escalator

In an escalator with a high speed inclined section, steps are coupled in an endless manner and circulate. Driving roller shafts of the steps adjacent to each other are coupled with each other by a link mechanism. An interval between the driving roller shafts is changed as the link mechanism is transformed. An outer peripheral length change absorbing mechanism is provided in a reversing section of a circulation path of the steps. The outer peripheral length change absorbing mechanism absorbs a change in an outer peripheral length of a polygon, formed by connecting axes of the driving rollers with straight lines, while guiding movement of the driving rollers in the reversing section.

In an escalator with a high speed inclined section, shape of an auxiliary rail is set, in a section between a forward path side horizontal section and a forward path side constant inclined section of a circulation path, such that, of steps adjacent to each other, a moving track of a relative position of a step on a lower step side with respect to a step on an upper step side is the same as surface shape of a riser of the step on the upper step side.

High-speed escalator for slope

In an escalator with a high speed inclined section, assuming that an upper-step-side end of a tread is the origin of a coordinate system when a step is seen from a side with the tread being horizontal and on an upper side, a riser passes a point whose horizontal and vertical coordinates can be expressed as (kr cos &agr; , &minus;kr sin &agr; ) (where k is a speed change ratio; r is a distance between the step link roller shafts of steps adjacent to each other in upper and lower landing sections; and &agr; is an inclination angle of an intermediate inclined section).

Growing community of inventors

Fukuoka, Japan

Joichi Nakamura