Manual positioning and compressing self-locking mechanism for track trolley

Abstract

The invention discloses a manual positioning and compressing self-locking mechanism for a track trolley. The manual positioning and compressing self-locking mechanism comprises a pair of supporting plates, a connecting plate, a hollow positioning pin, a compressing hook and a connecting rod driving mechanism, wherein the compressing hook is hinged to one pair of supporting plates through a compressing hook pin shaft; the connecting rod driving mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a rocking rod and a pressing-in-type ball head plunger piston; the pressing-in-type ball head plunger piston is arranged in a plunger piston mounting hole; the rocking rod is provided with a fixing block; grooves are formed in parts, corresponding to the pressing-in-type ball head plunger piston, at two sides of the fixing block; and the grooves are matched with an elastic ball head of the pressing-in-type ball head plunger piston. The manual positioningand compressing self-locking mechanism disclosed by the invention is simple in structure, convenient to operate and low in cost; and a compressed or loosening state of the compressing hook can be realized by utilizing the connecting rod driving mechanism, so that a workpiece is compressed, picked and placed and the stability of the manual positioning self-locking mechanism is improved; and the manual positioning and compressing self-locking mechanism is matched with the track trolley and is convenient to walk, and can be used for coping with a jolty and swaying 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 of the automobile assembly line and the quality of the product. Rail trolley transportation is a common transportation method, and its operation is stable and the assembly precision is high. [0003] Specifically, a positioning fixture is installed on the rail trolley, and the body assembly is fixed by the positioning mechanism on the fixture. The release action of the clamp 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 fixture mainly realizes the loosening and clamping of the fixture through the pneumatic system. The pn...

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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