The operators of small concrete mixing truck can only operate after professional training. The pumped concrete shall meet the pumpability requirements of concrete pump truck. Concrete pump truck pumping operation key can refer to the use of concrete pump. When the pumping is interrupted for more than 5 minutes, the concrete in the end hose must be discharged. Otherwise, due to the end of the concrete dehydration in the hose, the concrete will be sprayed fiercely and splashed around when pumping again, so the end hose is easy to be damaged. In order to change the orientation of the boom or concrete pump truck and need to fold, expand or recycle the distributing boom, first reverse the pump for 1 ~ 2 times and then act, so that the concrete placed in the conveying pipeline can fall or splash.

管道清洗有兩種方法水洗和氣洗。不管是水洗或氣洗，都要將閥箱體和料斗清洗潔凈。水洗時(shí)，把用水浸過的扎成圓柱形的水泥袋和清洗球先后裝進(jìn)已清洗潔凈的錐管中，接上錐管、管道，關(guān)閉卸料門，再向料斗注滿水。泵送水，直到清洗球從輸送管的前端冒出中止。氣洗即壓縮空氣吹洗，是把浸透水的清洗球先塞進(jìn)氣洗接頭，再接與變徑管相接的榜首根直管，并在管道的結(jié)束接上安全蓋，安全蓋的孔口要朝下。

There are two methods of pipeline cleaning: water washing and air washing. Whether it is water washing or air washing, the valve box and hopper should be cleaned. When washing with water, put the cylindrical cement bag and cleaning ball soaked with water into the cleaned taper pipe, connect the taper pipe and pipe, close the discharge door, and then fill the hopper with water. Pump water until the cleaning ball comes out from the front of the delivery pipe. Air cleaning, namely compressed air blowing, is to plug the water soaked cleaning ball into the air inlet washing joint first, then connect it to the top straight pipe connected with the reducer, and connect the safety cover at the end of the pipe, with the orifice of the safety cover facing down.

分析泵送電磁閥來電正常，就可以說明行駛、泵送方位查看應(yīng)當(dāng)正常，但是從頭查看：I2.5點(diǎn)亮，分動(dòng)箱方位查看靠近開關(guān)點(diǎn)亮，汽車行駛、泵送動(dòng)作隨駕駛室操作動(dòng)作正常，說明行駛、泵送控制電路無(wú)缺點(diǎn)。發(fā)動(dòng)機(jī)升速正常，而系統(tǒng)無(wú)壓力，方位查看又無(wú)缺點(diǎn)，因此斷定缺點(diǎn)為分動(dòng)箱內(nèi)部撥叉出現(xiàn)問題。正、反泵觀察壓力表，壓力為0，系統(tǒng)無(wú)壓力。查看DT1電磁閥來電正常，后手動(dòng)頂其閥芯，缺點(diǎn)照常。

If the power of the pumping solenoid valve is normal, it can show that the driving and pumping direction should be normal, but from the beginning: i2.5 is on, the transfer case direction is on, the proximity switch is on, and the driving and pumping action of the car is normal with the cab operation, which shows that the driving and pumping control circuit has no defects. The engine speed up is normal, the system has no pressure, and the azimuth check has no defects. Therefore, it is concluded that the defect is the internal fork of the transfer case. Observe the pressure gauge of positive and negative pump, the pressure is 0, and there is no pressure in the system. Check dt1 solenoid valve power normal, after the manual top of its spool, shortcomings as usual.

整機(jī)水平放置時(shí)所容許的傾斜角為3o，更大的水平傾斜角會(huì)使布料的轉(zhuǎn)向齒輪超載，并危及機(jī)器的穩(wěn)定性。假設(shè)布料桿在移動(dòng)時(shí)其間的某一個(gè)支腿或幾個(gè)支腿早年離過地，就必須從頭設(shè)定支腿，直至一切的支腿都能一向可靠的支撐在地面上。若終究一節(jié)布料桿能處于水平方位，對(duì)泵送來說是更理想的。假設(shè)這節(jié)布料桿的方位呈水平情況，那么混凝土的活動(dòng)速度就會(huì)怠慢，然后可減少輸送管道和結(jié)束軟管的磨損，當(dāng)泵送間斷時(shí)，只需結(jié)束軟管內(nèi)的混凝土才會(huì)流出來。假設(shè)終究一節(jié)布料桿呈向下傾斜情況，那么在這有些輸送管道內(nèi)的混凝土就會(huì)在自重作用下加速活動(dòng)，致使在泵送間斷時(shí)輸送管道內(nèi)的混凝土還會(huì)繼續(xù)流出。

When the whole machine is placed horizontally, the maximum allowable tilt angle is 3O. A larger horizontal tilt angle will overload the steering gear of the cloth and endanger the stability of the machine. Assuming that one or several legs of the boom leave the ground early when it is moving, it is necessary to set the legs from the beginning until all the legs can be reliably supported on the ground. If a section of distributing rod can be in horizontal position after all, it is the most ideal for pumping. Assuming that the position of the boom is horizontal, the movement speed of concrete will slow down, and then the abrasion of the delivery pipe and the end hose can be reduced. When the pumping is interrupted, only the concrete in the end hose will flow out. Assuming that after all a section of distributor is inclined downward, the concrete in some conveying pipes will accelerate under the action of self weight, so that the concrete in the conveying pipe will continue to flow out when the pumping is interrupted.