When starting the main motor, the power is transmitted from the motor rotor to the high-speed shaft of the reducer through a low-speed coupling. After two-stage gear transmission for deceleration, the passive shaft of the reducer is transmitted to the main shaft device through the coupling. If the direction of the motor is continuously changed, the drum can be wound or the wire rope can be loosened, and the container can be lifted up and down in the wellbore for periodic movement.
JTP-1.61.5P mining lifting winch, with a drum diameter of 1.6 meters and a drum length of 1.5 meters, variable frequency speed regulation, intelligent and active mining lifting winch. The lifting height of the steel wire rope winding is 226 meters for the first layer, 491 meters for the second layer, and 767 meters for the third layer. The shape and size of the spindle device are 20803200 (mm).
The winch consists of the following important components
① Spindle device (with plastic lining)
The drum is welded and formed from high-quality 16Mn alloy steel; The deformation that occurs during the incubation of the drum after bearing can quickly spread, and the stress deformation will not merge, effectively improving the bearing capacity and flexural strength of the drum. The spindle is made of 45 # forged steel and processed after being subjected to normalizing heat treatment. The material of the bearing seat is cast steel. The main bearing adopts double row radial spherical roller bearings. The appearance of the drum is equipped with a fully plastic lining plate with rope grooves, which controls the uniform and orderly arrangement of ropes. The adjustable rope disperser adopts a radial toothed block type.
② Parallel axis reducer
The parallel axis reducer accepts cylindrical gears, two-stage transmission, and adopts gear splash lubrication method. The reducer has a high load-bearing capacity, long service life, stable operation, low noise, good sealing system, and reliable installation.
③ Disc brake
The brake device adopts a rear mounted layout of the oil cylinder, effectively preventing contamination of brake friction due to oil leakage, and ensuring that the brake can provide sufficient braking torque according to the planned requirements. At the same time, it also prevents the phenomenon of cylinder jamming, with a compact layout, agile movement, and a idle time of no more than 0.3 seconds. Adjusting the brake shoe clearance is convenient and agile, and the braking is reliable.
④ Hydraulic station
Proportional pressure regulation, electrical delay two-stage braking, and dual pump oil supply hydraulic station are currently the most reliable hydraulic stations in terms of matching skills and performance for domestic elevators. The pressure regulation of the hydraulic system is all completed by electrical control, and the delay time can be continuously adjusted from 0 to 10 seconds.
⑤ Coupling
The main shaft and reducer are united by a gear coupling, which has a high load-bearing capacity and good centering. The reducer and motor are united by a rod pin coupling, and the elastic nylon rod can effectively slow down the stiff start and prevent the impact on the motor.
⑥ Depth indicator
Accept vertical archway depth indicator, indicating depth clearly.
⑦ Booking device
⑧ Console
⑨ Electronic Control
The main transmission system of the mining hoisting winch is as follows
Electric motor - Coupling - Reducer - Coupling - Drum
Introduction to the layout of mining hoisting winch
Each winch is assembled independently according to the requirements. The winch accepts welded group drums and group brake discs; The reducer has a large load-bearing capacity and a long service life; The disc brake is opened by hydraulic pressure, and the normally closed brake (brake) closed by the action of a disc spring is released by hydraulic pressure; Install a hydraulic delay equal torque secondary braking hydraulic station with dual energy devices (one hydraulic station is equipped with two oil pumps, oil pump motors, and electro-hydraulic pressure regulating devices, one set for operation and one set for backup).
The disc brake is an important implementation component of the elevator braking system, which is matched with the hydraulic station and pipeline system to form a complete braking system. It is practical for elevator work braking and quiet braking.
A disc brake is a brake system that generates braking force through the incubation of a disc spring, uses hydraulic pressure to expel the braking force, and applies the braking force along the axial direction. The detailed braking force, utilization and maintenance, and braking force mediation have a huge impact on the peaceful operation of the entire promotion system. The placement and utilization units must be highly valued to ensure smooth operation.
Disc brakes have the following characteristics:
1. The braking torque has excellent adjustability.
2. Low inertia, fast action, high agility.
3. High reliability, multiple sets of brakes can work simultaneously, ranging from 2 sets to 12 sets. Therefore, if one set fails, only the braking force of the department can be lost. Under normal circumstances, the hoist can be stopped by throwing it. If the hydraulic station or hydraulic system is damaged, the brake can be actively applied.
4. Good universality, many parts of the disc brake are universal, and the hoist can be equipped with disc brakes of different numbers and similar models.
5. Simple layout and convenient maintenance and adjustment.
The minimum value of the quietness coefficient of the steel wire rope meets the following criteria:
9 times for landing and takeoff personnel; 2. Landing personnel and materials (9 times for landing personnel, 9 times for mixed promotion, and 7.5 times for landing materials); 3. Specifically designed for handling materials at 6.5 times,
The ratio of the diameter of the drum of the hoisting winch on the well to the diameter of the steel wire rope should not be less than 80 times; The ratio of the diameter of the drum of the underground hoisting winch to the diameter of the steel wire rope should not be less than 60 times.
Article from:
Guangdong bucket elevator www.e-testing.net.cn