A people conveyor (1) comprises a truss (2) extending between two landing portions (20, 21); a band (12) of conveyance elements (13) forming a closed loop extending in a conveyance direction between the two landing portions (20, 21); a drive machine (25) configured for driving the band (12) of conveyance elements (13); and at least two magneto-inductive sensors (36a, 36b, 36c) mounted to the truss (2). The at least two magneto-inductive sensors (36a, 36b, 36c) are configured for providing sensor signals which allow determining the position and orientation of the drive machine (25) with respect to the truss (2).

A drive system (35) for a people conveyor (1) comprises a conveyance chain (15) including a plurality of chain links (36) connected to each other; a plurality of legs (38) configured for connecting the conveyance chain (15) with the conveyance elements (13); and a plurality of levers (40). Each leg (38) is connected to at least two different chain links (36) by at least two of the levers (40). Each of the levers (40) is pivotably connected to one of the chain links (36) and pivotably connected to one of the legs (38).

A passenger conveyor has a guardrail belt configured to run on a pair of right and left handrails in synchronization with footsteps; a camera provided at a platform of the handrail; and a control device configured to analyze an image obtained by photographing the platform with the camera, detect a passenger getting in from the platform, stop the footsteps or lower a running speed than a normal speed when detecting no passenger for a predetermined time, and move the running speed of the footsteps at the normal speed when detecting the passenger.

The present invention relates to an overspeed and reverse drive preventing device for an escalator. The device has a pawl and a connection part mounted to be connected by a tension spring such that, when the pawl is inserted into gears of the ratchet and is compressed by a ratchet, the tension spring is extended and the pawl is perfectly inserted into the ratchet, thereby making it possible to apply the same to escalators having various specifications. A braking member is mounted on the inner peripheral surface of a brake arm mounted outside a ratchet part or a rotary shaft, or on the outer peripheral surface of the device facing the brake arm. Therefore, the overspeed and reverse drive preventing device can apply additional braking power to the escalator rotary shaft to prevent a damage of a brake lining mounted on the ratchet part, prevent overspeed or reverse rotation of the escalator even though the brake lining is damage so as not to show the braking power, and reduce installation expenses and period of time and prevent deterioration in durability caused by perforation work since there is no need to perform perforation work to the escalator rotary shaft and the escalator support frame.

The present invention relates to an overspeed and reverse drive preventing device for an escalator. The device has a pawl and a connection part mounted to be connected by a tension spring such that, when the pawl is inserted into gears of the ratchet and is compressed by a ratchet, the tension spring is extended and the pawl is perfectly inserted into the ratchet, thereby making it possible to apply the same to escalators having various specifications. A braking member is mounted on the inner peripheral surface of a brake arm mounted outside a ratchet part or a rotary shaft, or on the outer peripheral surface of the device facing the brake arm. Therefore, the overspeed and reverse drive preventing device can apply additional braking power to the escalator rotary shaft to prevent a damage of a brake lining mounted on the ratchet part, prevent overspeed or reverse rotation of the escalator even though the brake lining is damage so as not to show the braking power, and reduce installation expenses and period of time and prevent deterioration in durability caused by perforation work since there is no need to perform perforation work to the escalator rotary shaft and the escalator support frame.

A drive system (35) for a people conveyor (1) comprises a conveyance chain (15) including a plurality of chain links (36) connected to each other; a plurality of legs (38) configured for connecting the conveyance chain (15) with the conveyance elements (13); and a plurality of levers (40). Each leg (38) is connected to at least two different chain links (36) by at least two of the levers (40). Each of the levers (40) is pivotably connected to one of the chain links (36) and pivotably connected to one of the legs (38).

A monitoring system includes: an imaging sensor configured to sense a lighting device of the passenger conveyor to acquire image data; and a processing apparatus configured to process the image data, the processing apparatus being configured to include: a background acquisition module configured to acquire a background model based on sensed image data; a foreground detection module configured to compare image data sensed in real time with the background model to obtain a foreground object; and a working condition judgment module configured to perform data processing at least based on the foreground object to judge whether the lighting device is in a normal state. Then, a failure or an abnormal lighting state of the lighting device can be timely diagnosed so that maintenance is performed.

A monitoring system includes: an imaging sensor configured to sense a lighting device of the passenger conveyor to acquire image data; and a processing apparatus configured to process the image data, the processing apparatus being configured to include: a background acquisition module configured to acquire a background model based on sensed image data; a foreground detection module configured to compare image data sensed in real time with the background model to obtain a foreground object; and a working condition judgment module configured to perform data processing at least based on the foreground object to judge whether the lighting device is in a normal state. Then, a failure or an abnormal lighting state of the lighting device can be timely diagnosed so that maintenance is performed.

A step chain for driving steps of an escalator may include link plates, chain pins, chain bushes, and buffer rollers that are connected to one another to form chain links, which can be moved in relation to one another. The step chain may also include running rollers disposed outside the chain links. The buffer rollers may each be designed in the form of a multi-component part that comprises at least one inner, dimensionally stable sliding component, by way of which the buffer rollers can be arranged in a rotatable manner, respectively, on the chain bushes, and an outer, damping component that is designed to be more elastically deformable than the sliding component. The step chain may be utilized in a person-conveyor device, such as an escalator or a moving walkway, for example.

A step chain for driving steps of an escalator may include link plates, chain pins, chain bushes, and buffer rollers that are connected to one another to form chain links, which can be moved in relation to one another. The step chain may also include running rollers disposed outside the chain links. The buffer rollers may each be designed in the form of a multi-component part that comprises at least one inner, dimensionally stable sliding component, by way of which the buffer rollers can be arranged in a rotatable manner, respectively, on the chain bushes, and an outer, damping component that is designed to be more elastically deformable than the sliding component. The step chain may be utilized in a person-conveyor device, such as an escalator or a moving walkway, for example.