2results about How to "Uniform impact force" patented technology

This utility model relates to the field of drilling technology for soil or rock layers, specifically to a one-way bypass valve for a screw drill and the screw drill itself. The drill includes a one-way bypass valve for unidirectional drilling fluid flow. The one-way bypass valve includes a valve body with a valve sleeve inside its inner bore. A one-way valve is located at the outlet end of the valve sleeve. The one-way valve includes a one-way valve seat with a support plate at the end furthest from the valve sleeve. The support plate has a drain hole for drilling fluid passage. A compression spring is also provided on the support plate, and a valve block is located at the other end of the spring. The one-way valve seat has a shoulder near the valve sleeve to stop the valve block. The spring force causes the valve block to abut or disengage from the shoulder, thus closing or opening the one-way valve seat. The compression spring in this utility model is positioned below the valve block, preventing the valve block and spring from being washed away by the drilling fluid with significant impact force, thereby improving the reliability of the entire device.

This invention belongs to the field of semiconductor molding compound strength testing technology, specifically a strength testing device for semiconductor molding compounds. It includes a C-shaped frame, a first sleeve fixedly connected to the C-shaped frame, a holding plate slidably connected to the first sleeve, a drive motor fixedly connected to the C-shaped frame, an impact member slidably connected to the C-shaped frame, a threaded rod fixedly connected to the output shaft of the drive motor, a movable plate threadedly connected to the threaded rod, a support rod fixedly connected to the lower side of the holding plate, a splined rod with a first floating plug fixedly connected to the splined rod, and a second floating plug slidably connected to the first sleeve. This invention automatically adjusts the height of the holding plate by changing the flow state of the liquid in the first sleeve and the position of the lower pressure plate, ensuring that the distance between the upper surface of molding compounds of different thicknesses and the lower surface of the impact member is consistent. This allows the impact member to apply a consistent impact force to molding compounds of different thicknesses, improving testing efficiency.