Mixer truck knowledge: What are the technical standards for a mixer truck?
The quality of a thing is not something that can be judged in a few words. For a mixer truck , many people only understand it in one side, like the volume of a concrete mixer truck tank currently sold on the market. 8- The 12-party cement mixer is a more commonly used model. To buy a good quality concrete mixer and a qualified concrete mixer, it must meet the following technical standards to be considered a qualified mixer. Come and see with Xiaobian ~
1. The overall dimensions of the vehicle shall conform to the provisions of national standards. And according to the approved product drawings and technical documents.
2. Outsourced parts and outsourced parts shall have the manufacturer's product certification and meet the requirements of relevant standards. Assembly can only be carried out after passing the inspection by the mixer truck manufacturer.
3. The factory-set maximum total mass of the mixer truck shall not exceed the maximum allowable value of the chassis, and the mass of the steering shaft (wheel) and the stability angle of roll shall meet the requirements of GB7258 .
Fourth, the welds should be uniform and straight. There should be no leakage, cracks, central slag, and the surface should be free of burrs and sand .
Fifth, all exposed black metal surfaces should be treated with anti-rust. The exterior decorative paint should be beautiful and generous, and meet the requirements of GB7258 .
Sixth, from feeding to conveying and unloading, the maximum time allowed is 90mh, and the mixing drum is continuously transported no more than 300 revolutions according to regulations. When the mixer is running, the maximum speed must not exceed 50km / h
7. After the ready-mixed concrete is loaded and delivered to the loan site at the specified agitation speed and delivery time, the quality of the clay should meet the national standard requirements.
8. The size of the outlet of the feeding hopper is not less than 650mm, and the height from the ground should not be greater than 3.8m.
Nine, the discharge speed of the cement mixer is not less than 0.65m3 / min, and the residual rate of the discharge is less than 2-5%. Feeding speed of mixer truck is not less than 2.7m3 / min
X. Conveying should be installed firmly. There should be no damage, deformation, etc. of the parts of the connecting parts, and there should be no situation where the boarding and the chassis deviate from the original fixing device.
11. Under the condition of maximum total mass, the car can overflow 14% of the ramp at a speed of 20km / h.
12. The braking performance complies with national standards. The noise outside the vehicle should meet the national standard requirements.
13. The sealing performance of the entire vehicle is good, and no oil leakage or air leakage shall occur in each sealing surface, pipe joints and all connection parts.