The utility model relates to a roller frame suitable for weld turning-roll the special section tank

Tank is the main component of tank car,because of the need of production process,tank turnover becomes an inevitable process.However,there are advantages and disadvantages in all kinds of tank flipping machines.Based on the analysis of the structure of all kinds of tank weld turning-roll machine,a kind of roller frame suitable for special section tank weld turning-roll is designed according to the structure of self-adjusting roller frame.The roller frame can greatly improve production efficiency and safety,and avoid defects in tank appearance.

Tank is the main component of tank car.Because of the need of its production process,tank weld turning-roll and forming becomes an essential process.

The widely used equipment is mainly three kinds of end flip machine,chain flip machine and roller flip machine,and these kinds of flip equipment have defects in practical application,which are mainly reflected in the aspects of time-consuming,large space occupied,hidden dangers of safety,and the appearance defects and the scope of adaptation.However,tank car plays an important role in the special vehicle industry.Whether a new type of tank turnover equipment with better applicability and reliability can be developed has become an urgent problem to be solved in the special vehicle industry.

Other than V,W,funnel and other special-shaped section tanks,there are some symmetrical sections of the same straight section, and the center of gravity of the tank is located in the straight section.This kind of cross section can be elliptical,rectangular circle,ladder circle and other smooth transition of the special-shaped cross section.In this paper,the above cross section except the normal circular section is called the special-shaped section tank.In the tank car special-shaped section tank model has exceeded 90.This feature is worth our effort to study a new type of flip device.

Structure of special section roller frame

When the welding roller frame flips the tank,because the distance between the rollers on the bending arm is close,if the support distance is only adjusted separately,the tank can not be effectively flipped,and the danger of the tank sliding outside the roller frame is also increased.In order to ensure safety,the distance between the two rollers and supports should be adjusted appropriately.

When the most protruding part of the tank is rotated to the bending arm,it will collide with it.Only by increasing the bending degree of the bending arm can the tank be flipped smoothly without collision between the tank and the bending arm.The larger the cross section width to height ratio,the greater the bending degree of the bending arm.

When the tank is flipped at a constant speed on the roller frame,it is found that the linear velocity of the four rollers is inconsistent and always changes with the change of the tank turnover.The difference of linear velocity is caused by the difference of tank width to height ratio,that is,the difference of rotation radius. Similarly,the linear velocity difference of the four rollers is small when the ladder tank is rotated.

After multi-scheme screening, a differential mechanism with simple structure and mature technology is finally adopted.The differential speed mechanism effectively solves the problem that the linear speed of the roller is not the same problem,resulting in the special-shaped section of the roller frame scheme can be implemented.

The working principle of the special-shaped section roller frame is as follows:the power device drives the differential mechanism by sending out the signal through the control system,and then the differential mechanism drives the four rollers to rotate simultaneously through the transmission device.The friction force between the roller and the tank is used to drive the rotation of the tank to realize the displacement.The special bending arm can automatically adjust the position of the roller according to different sections,and the linear speed of the roller is automatically adjusted through the differential mechanism.Tank longitudinal movement is guaranteed to be within the allowable range of automatic welding equipment,so it can be used with it.The mechanism is provided with a base,an active roller,a support,a transmission,a bending arm, a differential mechanism,a reset device,a moving roller,and a power drive,dynamic device,circuit and control system etc.

The practicability of special section roller frame has been fully verified in actual production. The device solves the defects of the previous flip device and has a fixed generalization, reference and application value,but also bring certain economic benefits to enterprises.The device can also be used in other industries similar to the flip of the workpiece. Through the next stage of upgrading, it is also expected to be used for V and W tank welding.