Variable-diameter positioning pin structure and multiple-vehicle-type rail trolley

Abstract

The invention discloses a variable-diameter positioning pin structure and a multiple-vehicle-type rail trolley. The variable-diameter positioning pin structure comprises a mounting seat, a rotating disc, a servo motor, a protective cover and a plurality of pin claws. The servo motor is mounted on the mounting seat, a shaft hole is formed in the mounting seat, and an output shaft of the servo motorpenetrates through the shaft hole to be connected with the rotating disc. The protective cover is mounted on the outer side of the rotating disc in a sleeving mode and connected with the mounting seat. A plurality of radial notches are formed in the upper surface of the protective cover. The pin claws are mounted on pin claw seats, and the pin claw seats are mounted in the radial notches correspondingly. A rotating disc thread is arranged on the upper surface of the rotating disc. Pin seat threads are arranged at the bottoms of the pin claw seats. The multiple pin claws are evenly distributedto form a positioning column in a surrounding mode. The servo motor makes action to adjust the outer diameter of the positioning column. According to the variable-diameter positioning pin structure and the multiple-vehicle-type rail trolley, the diameter of the positioning column can be adjusted specific to vehicle body positioning holes of different vehicle types, and the step that the differentvehicle types are equipped with different positioning pins of the rail trolley is not needed, so that the structure is simple, operation is convenient, the cost is saved, resource waste is reduced, and storage of the rail trolley is facilitated.

Description

technical field [0001] The invention relates to a variable-diameter positioning pin structure and a multi-vehicle track trolley adopting the variable-diameter positioning pin structure, belonging to the technical field of automobile manufacturing equipment. Background technique [0002] In order to meet the diversified needs of automobile consumers, major automobile manufacturers continue to shorten the change cycle and speed up the update of vehicle types. Therefore, the welding equipment tends to be flexible in function. Rail trolley transportation is a common transportation method, and it is particularly important to design trolleys that meet more vehicle types. Such as Figure 14 Shown is the positioning support pin structure of a track trolley in the automatic production line of a single model. The diameter of the positioning support pin is determined according to the positioning hole of the current model and cannot be changed. Therefore, once the positioning support p...

AI Technical Summary

Problems solved by technology

like Figure 14 Shown is the positioning support pin structure of a track trolley in the automatic production line of a single model. The diameter of the positioning support pin is determined according to the positioning hole of the current model and cannot be changed. Therefore, once the positioning support pin of the track trolley is completed, it can only be adapted to one model. , if the model is changed, it is required to re-make positioning support pins of appropriate size, so developing different trolleys for different models wastes resources, increases costs, takes up space, and is inconvenient to store

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