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HKM32 × 4 × 1.8 elevator shaft, braking system reform


Key words hoist hydraulic clutch actuation system spindle Xingtai mine auxiliary shaft hoist the former Soviet Union produced HKM3 2 × 4 × 1.8 hoist brake system uses air pressure hammer braking system, the auxiliary shaft hoist long-running, from 1968 to 2007 has been used to build mine in June, resulting in severe wear of brake wheel and brake wheel surface cracks, and stratification, although after several treatment , but always failed to solve a serious impact on auxiliary shaft to enhance security. The left side of the main shaft hoist drum shaft with the hub and the clearance fit for the left gap to 3.5mm, the right space for the 4.0mm, far more than the design value of 0.12mm-0.40mm gap range, the hoist drum run and the spindle crash, loud, greatly affect the safe operation of the main shaft upgrade, to increase the auxiliary roller wheel, the main shaft and main shaft of the hoist drum percussion greatly reduced,abercrombie pas cher, but not fundamentally solve the problem, run Over time, the gap may also increase, to solve this problem only replace the spindle unit. Also, such a braking system on some shortcomings in the design, if the brake pads to reduce the amount of braking torque is safe enough if you increase the amount of brake blocks, the security will brake the braking deceleration exceeds the standard, and safety and reliability is poor. Original pneumatic hoist gear clutch there are not open and close freely, not in place, after the rope to open the clutch,sac hermes birkin, clutch drum friction phenomena and activities, there are hidden dangers. After transformation, the new elevator model 2JK-4 × 1.8, from the Luoyang Mining Machinery Plant production. Major force components and key pieces of the spindle, high-quality carbon structural steel. There are two forged out of the spindle flange, the two fixed rollers and the plate with two bolt flange, respectively. Both ends of the bearing to the spindle bearings, bearing double-row radial spherical roller bearings, simple structure, high transmission efficiency, bearing capacity, use just regular lubrication to reduce the workload of maintenance staff. The pressure air hammer hydraulic disc braking system to the brake system, an increase of an advanced TE160 hydraulic station, the principle below: hydraulic disc brake device and the stations of the mine hoist brake system used to implement the work hoist brake and safety brake. Disc brake device is a brake system of the implementation of the components, it has advantages: small size, light weight,abercrombie fitch paris, inertia, action, fast, adjustable, high reliability, high versatility, basic simple maintenance, easy to adjust. Disc brakes from the brake shoe, butterfly springs, hydraulic components, with a cylinder liner, seals and brake body and so on. It provides the braking force by the disc spring, with hydraulic pressure oil supplied to achieve the brake. When the transmission from the station to the high-pressure hydraulic oil into the oil chamber, the piston will be driven to leave the brake shoe plate, butterfly set by the compression spring, brake shoe and there is a gap between the brake disc, brake brake is in the state. When the oil pressure chamber when the oil pressure slowly reduced in the butterfly spring spring force, the brake shoe and gradually move to the brake disc, if the hydraulic system to lower disc spring and the remaining spring force acting on the system began gradually moving plate, resulting in positive pressure up to maximum brake shoe and the brake disc will produce friction between the hoist working system that is the driving force to enhance the machine will work in a normal braking. The size of the braking force by changing the level of hydraulic brake hydraulic system to adjust. Hydraulic's Bianhua by hydraulic Zhan of proportionality Fakong Zhi, Er Bili valve Shoudong Operation Shiyou 受 operating platform braking Shouba's control, Quanzidonghua Tisheng been under electrical control Ji Tong's Bihuankongzhi. When the elevator in the promotion process for emergencies requiring emergency brake, hydraulic brake system value quickly dropped to a predetermined value after a predetermined time delay, quickly reduced to zero, then brake discs have the greatest positive effect on the pressure, then brake and friction between the brake disc is to enhance the system's maximum braking force.
     
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