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Use, maintenance and common fault treatment of rock drilling jumbo
Release time:
2023-01-02
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Use, maintenance and common fault treatment of rock drilling jumbo
Use, maintenance and common fault treatment of rock drilling jumbo
Use of (I) rock drilling jumbo
(1) Check whether the pump, air compressor, etc. are normal before work; and check whether there is oil leakage in pipelines, joints, etc,Water and air leaks.
(2) Before work, ensure that all levers, control devices and instruments are normal.
1. Walking operation
(1) Lower the lifting platform, reverse the sliding worktable, retract the boom, swing the guide rod horizontally, and drill the rockKeep the machine in the starting position and retract the legs before walking.
(2) Before the trolley travels, check the surroundings of the site to confirm that there are no people in the front, rear, left and right sides and no obstacles, and thenWork in accordance with the instructions of the guiding personnel. Do not touch the operating lever by mistake.
(3) When walking, it should be stable to avoid accidents in emergency operations, especially when going up and down slopes.Attention. The body of the trolley is very long. Even if the steering angle is not large, the front and rear ends of the body will swing extremely,Be especially careful when operating.
(4) When walking in a narrow tunnel, pay special attention to the surroundings. When rolling up the cable, the operator must press111 Work according to the instructions of the guiding personnel.
(5) The hydraulic oil temperature should be kept in the range of 30~70 ℃, and stop walking immediately when it exceeds 70 ℃.
2. Rock drilling and other operations
(1) Before entering the rock drilling operation, the pumice on the working surface should be removed, especially when drilling bolt holesMore attention should be paid to safety.
(2) Before connecting the water pipe, use compressed air to remove the dust in the pipe.
(3) Connect the insulated cable accurately to the power supply device.
(4) The rock drilling operation and the operation on the lifting platform can be carried out after the outriggers must be opened first.
(5) It is strictly forbidden to move the body during rock drilling and lifting platform operations. Otherwise, the arm and the reversing rod will be damaged.
(6) If the arm needs to move, it must first return the inverted rod, leave the vertex from the working surface, and pay attention to the lower part of the arm.Whether there is someone, pay attention to the person should be able to reach outside the safe distance when the arm is displaced. Pay attention to both arms.Collision with each other to avoid damaging the tubing.
(7) When operating the lifting platform, be sure to use gestures or signals to remind the operators below to pay attention,Check whether the lower arm and guide rod are in the correct position at any time.
(8) When moving the arm, do not let the hose trip.
(9) Pay attention to check the amount of dust discharged from the drilling hole to prevent blockage.
(10) It is forbidden to use the trolley to "find the roof" or remove dangerous stones.
3. Parking operation
(1) It is not allowed to park the trolley at the soft foundation and the place where the side wall and top are in danger of falling rocks or rockfall.
(2) After the trolley is parked, the guide rod and arm shall be placed in a horizontal position in the walking state, and each operating valve shall be placed inIn the middle, stop the motor and engine.
(3) Avoid parking on slopes. If it is necessary to stop the car, the legs should be opened and padded with triangular pads to preventStop the machine from sliding down.
(4) When the operator temporarily leaves the trolley and stops working for some reason, the power supply of the trolley shall be cut off.
(II) maintenance and common fault handling
1. Routine maintenance
(1) Check for oil leakage, and check all bolts of all components before each shift to ensure tightSolid.
(2) Clean the trolley, especially the rock drill and the propulsion beam.
(3) Check all oils (hydraulic oil, engine oil, diesel oil, lubricating oil, air compressor oil, etc.)position.
(4) Butter the whole vehicle, especially the propulsion beam, boom and rock drill.
(5) Check the rubber guide sleeve of the rotating rod on the propulsion beam. If it is too large, it must be replaced.
(6) Check the inlet filter screen to reduce impurities in the water.
(7) When the temperature is low, if the vehicle needs to be placed on the ground, the water pump cooler must be protected from water,Ensure that the water pump and cooler are not frozen.
(8) Check the electrical part of the lineWhether the road is loose, check the voltage, current, hydraulic gauge and other data areNoneAbnormal.
2. Common fault handling
The most common failure phenomenon in the process of drilling jumbo driving is sticking. When sticking occurs, it can beTake the following measures to solve the problem of sticking:
(1) If sticking occurs frequently during drilling, first consider adjusting the pressure setting of the anti-sticking device.Fixed value. The rotation pressure of the anti-card device action (switch the advancing direction at this time) should be set to be higher than the normal drilling push.The rotary pressure value is 15 standard atmospheric pressure. The setting of anti-sticking pressure must be accurate. If it is too high, the drill will be stuck.It will occur frequently. If it is too low, the rock drilling rig will not work normally (at this time, the anti-sticking pressure is less than the rock drilling rig.Normal working pressure, before the trolley reaches the normal working pressure, the anti-card device has been activated, causing the rock drill to reverseFeed, rock drilling jumbo can not properly drill.
(2) In unfractured rock mass, sticking occurs frequently. If it is not the problem of anti-sticking pressure setting value,That is the signal for grinding the drill bit, with special emphasis on peripheral grinding to restore taper. DrillAs the wear becomes blunt, it will inevitably affect the drilling efficiency and increase the rotary resistance during drilling; if the rotary resistance exceedsNormal drilling rotary pressure, will be stuck. In addition, in the case of maximum thrust pressure, the swing pressure dropLow is also a sign that the drill needs to be ground. The shape of the button should be ground to restore the button from the plane of the drill body.The height of the bulge. Therefore, it is very important to grind the drill bit regularly and restore the taper of the drill bit.
(3) If the drill bit is stuck in the rock gap, the anti-sticking device cannot eliminate the stuck drill, and the rotary pressure can be increased,Put the push handle in the reverse feed position, and pull out the drill rod and drill bit.
(4) If the rock slag in the rock hole is not washed well, the flushing water pressure should be checked first, and the flushing water should be increased appropriately.Water pressure, improve the effect of slag.
(5) If the anti-card pressure is set correctly, the rock is free of cracks, the taper of the drill bit is appropriate, and the flushing effect is good,But there is still a sticking phenomenon, it is necessary to consider whether the viscosity of the hydraulic oil is correct, if the oil temperature is too low, then take appropriateMeasures to raise the oil temperature, if necessary, replace the appropriate viscosity of hydraulic oil.
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