Since the loading mixer is used to transport concrete, in order to extend its service life and create more benefits, we need to pay attention to maintenance at all times to avoid accidents caused by improper maintenance and cause loss of benefits. The maintenance of concrete mixer is divided into five stages. Today, the engineer of the loading mixer tells you how to maintain the mixer from loading at different stages, and attention should be paid to it What?
1、 From the front of the loading mixer
1. Check and find out the problems and solve the problems
The mixer is afraid that the tank will not turn on the road, and the concrete can not be stopped for more than 2 hours. The concrete of C40 or above can not be stopped on the road.
After the car starts, let the jar rotate at a low speed, check the tire pressure around the car, see if there is any air leaking tire, check whether there are stones, nails and other binding in the tire, and clean it up in time.
Check the side lights to ensure that they are on the edge of the tire, because the construction site will often pile up the steel bars and other sundries, and the sidewall is weak.
2. Ensure that there is enough water in the water tank and water reducing agent
Because of various reasons, the material is too dry, when there is no water to add and can not put out the material, water reducing agent is the lifesaving straw, which can ensure the fluidity of concrete.
3. Confirm the mixing tank is in a stop state
Because when the engine starts, if the jar is in high speed rotation state, the instantaneous force will be very big, which will damage the reducer and pump motor system.
4. Special precautions for inspection
Gear oil of reducer, oil of hydraulic system (motor, oil pump, radiator) shall be replaced for the first time for 100 hours, and then every 1000 hours (at least once a year). The radiator, drive shaft, raceway, tug, main groove shaft and control lever are filled with grease once a month.
2、 In the loading of concrete mixer
1. Before loading, the mixing drum shall be reversed
When the vehicle head shift is running, it is necessary to reverse the rotation as much as possible, because most of them are parked in the open air, and there may be water, leaves and other sundries in the tank. If not discharged, the concrete quality will be affected.
2. When loading, remember to flush the hopper
Otherwise, the scattered stones will be easy to solidify inside and outside the receiving hopper and chute, which will affect the use and beauty.
3、 From the loading mixer in transportation
1. You must be slow when you turn
The mixer has high center of gravity and easy to roll over! Before turning, slow down and reduce gear ahead of time. Try not to press the brake when turning. Observe whether the can is rotating at any time through the rear-view mirror. Slow the speed as far as possible, and the speed is too high, and the vehicle is easy to swing.
2. Bad road passing through at low speed
When encountering uneven road and potholes, use appropriate low speed to block through, so as to ensure the car is full of power. When encountering big pits, stones, steel bars and iron blocks, try to avoid them, especially heavy cars.
3. Downshift ahead of time on the uphill
If the pull is full, pay attention to the slow start, and pay more attention to the uphill. Do not reduce gears in disorder and reduce gears in advance. Meanwhile, the speed of the tank is accelerated, and the concrete outflow is avoided.
4. Do not slide in neutral when downhill
Drive in a suitable gear before driving for a long time or before going down the slope. Do not slide down the slope in heavy neutral. When the downhill turns, slow down ahead of time, then reduce the gear and then slow down again. The braking effect with gear is good.
5. Pay attention to the problem of height limit
The road conditions of the construction site are complex, so care should be taken to trees, etc., especially to prevent the wire from scraping.
Detailed introduction of the maintenance methods of concrete mixer in different stages
4、 Concrete mixer truck entering the site
1. Try to walk in the middle of the site
Because the road on the site is simple and the subgrade is soft, driving near the roadside will easily lead to vehicle rollover.
2. Get off in advance and check the reverse line
The mixer works at night. After arriving at the construction site, stop the car well. Get off to check the reverse route first. If there are obstacles, pits or soft places, they should be avoided. In case of steel nails, timely cleaning is required.
3. Be slow when backing up
Because many roads on the site are just laid by excavators, the car is prone to sink. Start in gear 1 (you can stop the jar at this time, when the jar turns very fast in the first gear, the car will be more unstable), and drive slowly and evenly. The reverse route should be as straight as possible. If you want to reverse repeatedly, the steering wheel should not be killed or hit too much, because it is easy to hold off the fire on the soft road. When the big throttle is poured out, the vehicle speed is too fast and it is easy to hit something.
5、 From the unloading of the loading mixer
1. Allow the mixing tank to run at full speed for a minute or two before unloading
Let the concrete be fully mixed, and add some water if necessary to make the concrete mix more evenly and facilitate unloading.
2. Unloading should not be determined by the discharging worker
When discharging, watch it yourself, so as not to operate the discharge lever randomly. Stop every time the jar is reversing the middle position to protect the reducer, pump motor, etc.
3. The mixing tank must be washed carefully
When washing the jar, it is necessary to wash it carefully, and turn the water back and forth twice before releasing it.
4. Don't forget the signature of the construction unit
Sign the time to the site and your own name, don't forget the construction unit sign, otherwise it will be dry.