1、 The overall dimensions of the whole vehicle shall comply with the provisions of national standards. And according to the approved product drawings and technical documents.
2、 The purchased parts and outsourcing parts shall be provided with the product qualification certificate of the manufacturer and meet the requirements of relevant standards. They can be assembled after passing the inspection by the mixer manufacturer.
3、 The total mass of the mixer truck shall not exceed the maximum allowable value of the chassis, and the steering axle (wheel) load mass and roll stability angle shall comply with the provisions of GB7258.
4、 The weld shall be even and straight. There should be no welding leakage, crack, central slag, burr on the surface and sand inclusion.
5、 All exposed ferrous metal surfaces shall be rust proof. The exterior decoration paint shall be beautiful and elegant, in accordance with GB7258.
6、 The allowable long time from feeding to the completion of conveying and discharging is 90mh, and the continuous transportation of mixing drum is no more than 300 revolutions. When the mixer is running, the high speed shall not exceed 50 km / h
7、 After the ready mixed concrete is transported to the delivery place at the specified stirring speed and transportation time, the quality of the mud and concrete shall meet the requirements of the national standard.
8、 The size of the inlet hopper outlet shall not be less than 650mm, and the height from the ground shall not be greater than 3.8m.
9、 The discharging speed of cement mixer is not less than 0.65m3/min, and the discharge residual rate is less than 2-5%. The feeding speed of mixer truck shall not be less than 2.7m3/min
10、 The conveying should be installed firmly. All connecting parts shall be free from damage, deformation and other phenomena, and there shall be no deviation between the upper carriage and the chassis from the original fixed device.
11、 Under the condition of large total mass, the vehicle can overflow through 14% ramp at the speed of 20km / h.
12、 The braking performance meets the national standard. The noise outside the vehicle shall meet the requirements of national standard.
13、 The sealing performance of the whole vehicle is good, and the sealing surface, pipe joint and all connecting parts shall be free of oil and gas leakage.