When the drum ear is running along the tank road, the connection point and bending high points will occur due to the design and installation of the tank road, and the wheel head will be affected by horizontal thrust, and the rebound force between the arm frame, base and buffer. The rebound force of the buffer is to ensure the smooth passage of the lifting container; second, the lifting container shall not collide with the tank channel; third is to ensure the rise and descent The medium swing range shall not be too large. Therefore, the buffer performance of the buffer is designed strictly designed according to the weight and operation speed of the lifting container, but the maximum horizontal thrust of the wheel head must be less than or equal to the requirements of the industry standards. The roller tank ears designed and manufactured according to the above theory can effectively meet the user requirements. When 3. on the lifting container, the tightening degree of the polyurethane wheel and the tank channel should be reasonably determined according to the tank channel installation accuracy (vertical degree) and the buffer travel of the series of products, too large and too small will cause the large swing of the lifting container, causing the collision between the iron tank ear and the tank channel of the lifting container. If the installation accuracy of tank road meets the national standard, the lowest point of polyurethane wheel and tank road can be tightened.