Reusable four-jaw type expansion screw
An expansion screw and claw-type technology, applied in the direction of pins, connecting components, mechanical equipment, etc., can solve problems such as difficult to meet repeated use, loose connection of fasteners, dissatisfaction with environmental protection concepts, etc., and achieve a simple and feasible combined structure , easy to return, save material cost effect
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[0018] The present invention will be further described below in conjunction with accompanying drawing, and the structure and principle of this device are very clear to those skilled in the art. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] see figure 1 , the reusable four-jaw expansion screw is composed of a screw shell, a connecting screw and a grooved ram arranged in the screw shell. see figure 2 , in this embodiment, the grooved ram is evenly provided with four ram grooves in the circumferential direction, and the four ram grooves can be replaced with 2, 3 or n uniformly arranged in the circumferential direction The ram groove, n is a positive integer greater than 2. Each of the ram grooves is correspondingly provided with a movable claw, and the surface of the shell shell is provided with shell openings with a shape, size and quantity suitable for the mov...
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