Manual of mine hoist hydraulic station
(2) when adjusting the rope. The movable drum must be fixed first, and the clutch can be opened by force
(3) when aligning the rope each time, align the rope after the oil is injected into the movable drum sleeve
(4) gear alignment should be carried out before the clutch is engaged. After adding oil on the teeth, set up the clutch again
(5) when the clutch engagement is too tight, the clutch can be pulled out or can not be closed, the power can be sent to make the dead drum rotate a little and then close again, so that the operation can be hard hit to prevent damage to the clutch
(6) it is strictly forbidden to lift or lower with a single hook ring Rope adjustment
(7) after adjusting the rope, check the Yele system, and the position of each solenoid valve and clutch oil cylinder is accurate. Only when it is confirmed that there is no error can it be lifted normally
the right hub of the fixed roller is fixed on the main shaft with tangential key, and the left hub is sliding on the main shaft. The right wheel hub of the traveling drum is sliding mounted on the spindle T through the bushing, and there is a special lubricating oil cup to ensure lubrication. The bushing is used to protect the spindle and hub from abrasion and abrasion when adjusting the rope. The left wheel hub is fixed on the shaft with tangential key and connected with the drum through the rope adjusting clutch. The drum is of welded structure, and the spoke is made of steel plate. Generally, the outer side of the cylinder shell is equipped with a wooden lining, and there is a spiral rope groove on the wooden lining, so that the wire ropes can be arranged regularly and the wear of the wire ropes can be reced. The double drum hoist is equipped with a rope adjusting clutch, which is used to connect or disconnect the traveling drum from the main shaft, so that when the rope length needs to be adjusted or the lifting level needs to be changed, the two drums can move relatively. There are three main types of rope adjusting clutch: gear clutch, friction clutch and worm gear clutch. Gear clutch is widely used.
Name: mine hoist, winch, English Name: mine hoist. It is a kind of large lifting mechanical equipment. The motor drives the mechanical equipment to drive the steel wire rope, so as to drive the container up and down in the shaft to complete the conveying task. Mine hoist is evolved from the original water lifting tools. Modern mine hoist has the advantages of large lifting capacity, high speed and high safety. It has developed into a fully automatic heavy mining machinery controlled by computer
wellhead primary safety braking: in case of any accident at wellhead, all oil pressure values of disc brake immediately return to zero. Make the lifting system in full braking state.
The emergency stop of mine hoist is referred to as class I fault. Once this kind of fault occurs, the AC and DC circuits will be disconnected and the brake will stop immediately. Such faults include:
(1) over hoisting of two terminals
(2) motor failure of hydraulic station of braking system
(3) the mine hoist runs in the wrong direction
(4) ring the operation of the mine hoist, the horizontal shaking table stabilizers act
(5) two terminal overspeed
(6) main motor loss of excitation
(7) power loss of protection circuit
(8) DC main circuit over-current
(9) DC main circuit overvoltage; The accident shutdown of mine hoist is referred to as type II fault. Once this kind of fault occurs, the hoist will decelerate automatically according to the speed chart and stop automatically when it reaches below 2m / s. Such faults include:
(1) deformation of driving wheel of mine hoist
(2) tail rope fault
(3) no zero setting after emergency stop
(4) the operation limit switch is out of order
(5) the safety door is opened when driving
(6) mine hoist zero motor fault
(7) overspeed between two terminals. The signal prediction of mine hoist is referred to as class III fault. When this kind of fault occurs, it will stop without braking, and only sound and light fault signal prediction will occur. Such faults include:
(1) overheated bearing of DC main motor of mine hoist
(2) DC operation current grounding
(3) wear of brake shoe
(4) abnormal lubricating oil pressure
(5) mine hoist ventilation failure
(6) DC main circuit grounding
JK series mine hoist is mainly used in vertical shaft or inclined shaft of coal mine, metal mine and non-metal mine to lift and lower personnel, materials and equipment
check whether the connecting parts (such as bolts, rivets, pin shafts, etc.) of each part are loose, and observe the meshing condition of recer gear through the inspection hole. Check the oil supply of the lubrication system and the working condition of the braking system. Check whether the screw nut of the depth indicator is loose, and whether the protection device and instrument are normal
check the stability of each rotating part, such as whether the bearing vibrates, whether the base and foundation bolts (screws) of each part are loose. Test the overwinding protection device. Manually test the rope loosening signal device, test various signals (including full bin, start-up, stop, emergency signals, etc.)
check the contact wear of each contactor (signal panel, rotor control panel, inverter, etc.), and repair or replace the burnt one (with emery cloth and small file) to keep good contact. Check the rotation of rope adjusting clutch and crown wheel, such as gasket, bearing, etc
check whether the structure of the lifting container and its accessories (such as car stopper, connecting device, can ear, etc.) are normal. Check the connection and lubrication of the spring, catcher and linkage rod of the anti falling device system. Check the working condition of wellhead loading equipment (such as pusher, crawler, mper, car stopper, shaking table or tank seat, safety door, etc.).
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