Building hoist is a kind of essential vertical transportation machinery on construction sites, but the level of automaticon control is very poor. Generally, there’s no leveling device, only depend on operators’ eye survey or estimation to leveling; also there’re no call system or display functions, only by gesture or shouting to contact hoist operator. The running of hoist is passive, lack of efficiency and safety. The leveling device system can detect calling signals of every floor automatically by using callling devices on the each floor, judge the up and down conditions of calling signals to make cages stop precisely. When allow cages to stop at the referred floors, system will issue an decelerating order automatically while cages near to referred floors to make cages stop at the specified floor.
Note: Building hoist, material hoist, in the paper refer as building hoist
1. Introduction:
Building hoist is a kind of essential vertical transportation machinery on construction sites, but the level of automaticon control is very poor. Generally, there’s no leveling device, only depend on operators’ eye survey or estimation to leveling; also there’re no call system or display functions, only by gesture or shouting to contact hoist operator. The running of hoist is passive, lack of efficiency and safety. The leveling device system can detect calling signals of every floor automatically by using callling devices on the each floor, judge the up and down conditions of calling signals to make cages stop precisely. When allow cages to stop at the referred floors, system will issue an decelerating order automatically while cages near to referred floors to make cages stop at the specified floor.
2. Principle and features of automatic leveling device system:
Building hoist is gear and rack drive, gear counting device provides a set of pulses that is in proportion to height of building for micro computer mainboard and can count location of cages precisely by calculating pulses to leveling. Its error is 1.5cm.
The initial use of the new device, customers need to make the hoist stop objective floor leveling location manually, correspond diplaying pulses, press the save button to store the height of each floor into the micro computer control system, then begin to operate, two steps in brief: (1)Input floor numbers. (2) Press strat key. Computer will calculate objective floors and distance according to present location, and execute corresponding transportation movement, then finish leveling.
Automatic leveling device system
Note: Building hoist, material hoist, in the paper refer as building hoist
1. Introduction:
Building hoist is a kind of essential vertical transportation machinery on construction sites, but the level of automaticon control is very poor. Generally, there’s no leveling device, only depend on operators’ eye survey or estimation to leveling; also there’re no call system or display functions, only by gesture or shouting to contact hoist operator. The running of hoist is passive, lack of efficiency and safety. The leveling device system can detect calling signals of every floor automatically by using callling devices on the each floor, judge the up and down conditions of calling signals to make cages stop precisely. When allow cages to stop at the referred floors, system will issue an decelerating order automatically while cages near to referred floors to make cages stop at the specified floor.
2. Principle and features of automatic leveling device system:
Building hoist is gear and rack drive, gear counting device provides a set of pulses that is in proportion to height of building for micro computer mainboard and can count location of cages precisely by calculating pulses to leveling. Its error is 1.5cm.
The initial use of the new device, customers need to make the hoist stop objective floor leveling location manually, correspond diplaying pulses, press the save button to store the height of each floor into the micro computer control system, then begin to operate, two steps in brief: (1)Input floor numbers. (2) Press strat key. Computer will calculate objective floors and distance according to present location, and execute corresponding transportation movement, then finish leveling.
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