A manual positioning and pressing self-locking mechanism for rail trolley

Abstract

The invention discloses a manual positioning and pressing self-locking mechanism of a rail trolley, which comprises a pair of support plates, a connecting plate, a hollow positioning pin, a pressing hook and a connecting rod driving mechanism. The support plate is hinged; the connecting rod drive mechanism includes a first connecting rod, a second connecting rod, a third connecting rod, a rocker and a press-in ball plunger, and the press-in ball plunger is arranged on the column In the plug installation hole, the rocker is provided with a fixed block, and the two sides of the fixed block are provided with grooves corresponding to the press-in ball plunger. The elastic ball head of the in-type ball plunger is matched. The present invention is simple in structure, easy to operate, low in cost, and can realize the pressing or loosening state of the pressing hook by using the connecting rod driving mechanism, so as to realize the pressing or taking and placing of the workpiece, improve the stability of the positioning manual self-locking mechanism, and the track table The car is easy to walk with, and can cope with the bumpy and shaking working environment.

Description

Technical field [0001] The invention relates to a manual positioning and pressing self-locking mechanism of a rail trolley, which belongs to the technical field of automobile manufacturing. Background technique [0002] In the welding workshop of an automobile factory, the conveying system directly affects the production efficiency and product quality of the automobile assembly line. Rail trolley transportation is a common transportation method with stable operation and high assembly accuracy. [0003] Specifically, the positioning fixture is installed on the rail trolley, and the body assembly is fixed by the positioning mechanism on the fixture. The clamping action can realize the putting in and taking out of the body assembly, and the stable positioning of the body assembly can be realized through the clamping action. At present, the clamps are mainly loosened and clamped through the pneumatic system. The pneumatic system mainly uses air cylinders, air sources, control valves,...

AI Technical Summary

Problems solved by technology

At present, the fixture mainly realizes the loosening and clamping of the fixture through the pneumatic system. The pneumatic system mainly uses cylinders, air sources, control valves, etc. Although the automatic control of the positioning fixture can be realized through the pneumatic system, the structure of the pneumatic system is firstly complicated and the cost is high. ;Secondly, if there is air leakage in the cylinder and air pipe, the positioning of the vehicle body cannot be guaranteed, which will seriously affect the accuracy of the equipment; thirdly, because the pneumatic system needs air source, the number of air pipes is large, it occupies a large space, and there are also problems of messy pipelines, which affect Automobile welding environment; thirdly, the compression force of the cylinder is determined by the bore and air pressure of the cylinder, which is a finite value, and there is a situation where the compression force is insufficient; finally, the most important thing is that the rail trolley needs to move back and forth according to the site conditions. If the clamp adopts a pneumatic system, the air source cannot travel with the rail trolley. If the clamp with a pneumatic system is forcibly used on the rail trolley, it will not only affect the stroke of the rail trolley, but also the configuration of the air source and air pipe is cumbersome.

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