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The countersunk head locking pin is a cylindrical pin that realizes axial locking or loosening between modules and modules and between modules and platforms by rotating the screw head or handle.

1. Structure and composition of countersunk head locking pin

The countersunk head locking pin is equipped with 5 concentric steel balls. When the locking pin thread is loosened, the steel ball will automatically retract into the locking body. At this time, the countersunk head locking pin can be inserted into or pulled out of the round hole of the locked workpiece. When in use, the countersunk head locking pin is inserted into the hole of the locked workpiece and the head of the locking pin is gradually tightened by hand. At the same time, the steel ball gradually protrudes. The countersunk head locking pin automatically centers and clamps the module, and then tightens it with a wrench. The tightening force is required to be appropriate. , should not be too large (generally the wrench can be rotated 45~60°). After tightening, the countersunk head locking pin can reach a clamping force of 50kN and a shearing force of 250kN. At the same time, various lengths of countersunk head locking pins are designed according to different use occasions.

The main components of the countersunk head locking pin are: locking body, locking rod, steel ball (or handle), and there are other different components in different structural forms.

2. Basic classification and advantages of countersunk head locking pins

According to diameter, it is divided into two series: D16 and D28. Among them, the countersunk head locking pin with D16 diameter is relatively small and can be used in situations where the operating space is tight. The specific operation method is the same as that of the countersunk head locking pin with D28 diameter. Similar, just more flexible. The D28 countersunk head locking pin is larger in size and can be used on large instruments to function, which cannot be replaced by the ordinary small diameter D16 countersunk head locking pin.

In addition, the countersunk head locking pin is used for locking between the platform and accessories, and between accessories, and has advantages such as clamping.

3. Operation process of countersunk head locking pin

1. At the beginning of our operation, the steel ball of the countersunk head locking pin is extended to resist the inner chamfer, and then reaches the locked state;

2. When the steel ball of the countersunk head locking pin returns, the drizzle aperture of the corresponding contour diameter will enter the loosened state;

3. After we complete the previous routine operations, the countersunk head locking pin will be locked in the SW14 hexagon countersunk hole at the top.



 
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