[0002] In modern buildings, elevators are necessary operating equipment for high-rise buildings. Due to their high cost and operating costs, and occupying a certain area and space of the building, most low-floor buildings (generally below six floors) In particular, floors with a long service life are not equipped with elevators, which brings inconvenience to residents living above the third floor, especially for middle-aged and
elderly people and the infirm, sick and disabled, traveling is more inconvenient. In order to provide convenience for people who live and live in low-rise buildings, the invention patent with the
authorization announcement number of CN2554145Y and the authorization announcement date on June 4, 2003 discloses a "low-rise chain elevator". The vertical lifting structure has the problems of complex structure, high cost, and large space occupation, which is not conducive to installation and use in low-rise buildings; the invention patent with the authorized announcement number of CN1234591C and the authorized announcement date of January 8, 2006 discloses a "Stairwell Automatic Rotating Escalator Running Track", its main structure is to install the up and down running track on the
handrail in the
stairs, install the manned box on one side of the
handrail, and drive the manned box to follow the
stairs of the building by pulling the
rope through the motor. The trajectory runs up and down, but because the rotary escalator is installed on one side of the
handrail, its disadvantages are: first, the structural strength of the handrail must be increased, otherwise it will cause the manned box to be pulled and deformed after being loaded, and it will not be able to run Even the phenomenon of being scrapped; the 2nd, this revolving escalator is installed on the side of handrail, and the manned box occupies certain corridor space, makes the spacing of its
stairs narrow, when people
walk in the stairwell, especially when carrying objects, just It will be impossible to pass because the stair spacing is too small; the third is that when the passengers are on different floors, they cannot see the
action status of other floors and people walking on the stairs. People
cause injury, very unsafe; Fourth, the structure of the spiral escalator is complicated, the cost is high, and the maintenance is very inconvenient, which is not conducive to installation and use in low-rise buildings; the authorization announcement number is CN2926161Y, and the authorization announcement date is July 2007 The invention patent on the 25th disclosed a "low floor stair elevator", its main structure includes motor,
gear transmission,
sprocket, chain,
wire rope, counterweight, fixed
pulley, elevator
assembly, bearing, transmission shaft, guide rail The base, the
electromagnetic brake and the slideway fixed in the base of the guide rail; the present invention also includes a proximity switch, a micro switch and a moving
pulley; the bases of the two guide rails are placed relatively parallel and fixed in the inclined bases on both sides of the stairs respectively Each slideway is equipped with two movable pulleys fixedly connected with the bottom end surface of the ladder
assembly, the front end of the ladder
assembly is fixedly connected with one end of the chain, and the other end of the chain is fixed to the front end of the counterweight by bypassing the
sprocket Connection, the
sprocket is installed on the transmission shaft and connected with the output shaft of the motor through the
gear transmission device, the transmission shaft is equipped with an
electromagnetic brake, the two ends of the transmission shaft are installed on the guide rail base through bearings, the rear end of the counterweight is connected with the One end of the
wire rope is fixedly connected, and the other end of the
wire rope is fixedly connected to the rear end of the elevator assembly by bypassing the fixed
pulley, and the fixed pulley is fixedly connected to the base of the guide rail. There is a micro switch connected to the guide rail base directly under the wire
rope, and the front and rear ends of the guide rail base are respectively equipped with proximity switches.
Its defect is: the one, this stair lift is arranged on the whole stair top, must use this stair lift, wasted energy, and original stair is just useless, has lost use value; The 2nd, this stair lift uses chain to carry out transmission ,
lubrication and maintenance must be ensured uninterruptedly during operation, otherwise it will
rust and cause breakage, resulting in personal injury and poor safety performance; third, the stair elevator has a complex structure, difficult installation, high cost, and very inconvenient maintenance