Electrostatic adsorption welding spot ultrasonic automatic detection device and method

Abstract

The invention relates to an electrostatic adsorption welding spot ultrasonic automatic detection device and method, and belongs to the technical field of nondestructive testing equipment. The electrostatic adsorption welding spot ultrasonic automatic detection device consists of a wall-climbing mechanism and a calibrating mechanism, wherein the wall-climbing mechanism consists of an auxiliary armA, an auxiliary arm B, an auxiliary arm C, an auxiliary arm D, a driving arm A, a driving arm B and a workbench; the calibrating mechanism consists of a precision keeping mechanism and a water circulation mechanism; wall climbing and inhabitation are realized by controlling the auxiliary arms and the driving arms; welding spot positioning and detection are realized by controlling the calibrating mechanism, so that the electrostatic adsorption welding spot ultrasonic automatic detection device can work freely in narrow semi-enclosed spaces, vertical walls and on ceilings, and the position of the device can be displayed in real time on a terminal; the electrostatic adsorption welding spot ultrasonic automatic detection device has the advantages of high positioning accuracy, easiness in operation and control, no damage to an adsorption surface in a moving process and the like, and traceable query of detection data can be realized.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing equipment, in particular to an electrostatic adsorption type ultrasonic automatic detection device and method for solder joints. Background technique [0002] In the shelf welding of freeze dryers, projection welding is the latest connection method. For freeze dryers, the sealing of the partitions is particularly important, especially for pharmaceutical freeze dryers. If the partitions are not sealed, It may cause the coolant to leak out and contaminate the whole box of medicines; in the production of rail cars, spot welding is an important connection method for the connection between the skin and the frame of the car, and the quality of the solder joints directly affects the quality of the car body and the performance of the whole car. Since spot welding is closed nucleation during the welding process, it is easily affected by factors such as the surface state of the material to b...

AI Technical Summary

Problems solved by technology

[0003] Wall-climbing robot is a kind of equipment that can perform motion work on vertical walls or ceilings. At present, the main wall-climbing robots are based on positive pressure adsorption, negative pressure adsorption, magnetic adsorption, etc. These three adsorption methods have a small scope of application. , high movement noise, high requirements on wall material, slow moving speed and poor load capacity

Positive pressure adsorption is difficult to adsorb in a narrow space. Negative pressure adsorption has relatively high requirements on the surface roughness of the adsorption. Magnetic adsorption can only work on magnetically permeable materials.

[0004] In the production and use of freeze dryers and rail cars, it is particularly important to evaluate the quality of spot welding joints. In recent years, the online monitoring of spot welding has developed rapidly, but these devices are only for manufacturers or third-party testing agencies. During use, new cracks will also sprout at the solder joints, causing potential safety hazards

At present, the post-welding inspection of the partition is still used for the spot welding of the freeze dryer, and then the assembly is carried out. The regular inspection of the user is to disassemble the machine for inspection, which greatly affects the entire production efficiency; and for the spot welding of rail cars In production, the method of online monitoring is generally adopted; in use, the method of random inspection of solder joints is generally adopted, and the method of traditional artificial scaffolding is used in the detection, which is labor intensive, high detection cost, hidden safety hazards, and cannot be fully realized. Detection and other issues

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