3results about How to "Small impact" patented technology

The utility model discloses a contact part and relay, this contact part includes at least one switch module, this switch module includes at least two along the first direction arrangement's moving contact piece, and with each moving contact piece respectively corresponding at least two static contact piece, in switch module, each moving contact piece has the fixed end and the movable end along the second direction distribution, and the fixed end is opposite the static contact piece fixed of this moving contact piece, and the movable end is suitable for the direct action or swing in third direction opposite this moving contact piece's fixed end to with corresponding static contact piece close or disconnect, wherein, at least two in the first direction adjacent moving contact piece's movable end is opposite along the second direction, and the second direction is perpendicular with the first direction or each other has the angle of clamping, and the third direction is perpendicular with the first direction, the second direction all. Adopt above -mentioned technical scheme, can improve the problem that traditional relay contact part occupies big space.

The utility model provides a kind of light supporting device for steeply inclined thin coal seam belongs to coal mining technical field, the light supporting device for steeply inclined thin coal seam includes side support frame in both sides, light supporting assembly is set between side support frame, light supporting assembly includes supporting bottom plate and supporting net in both sides, one side of supporting net is connected with steel chain, another side is connected with steel chain, electric winch is set on side support frame, one end of steel chain is connected with supporting net, and the other end is fixedly connected with the reel of electric winch by ring buckle;Side support frame includes stand, crossbeam and inclined strut, trapezoidal bottom plate is set in the bottom of stand, crossbeam is fixedly connected with stand by bolt, one end of inclined strut is connected with stand, and the other end is connected with bottom plate;Multiple groups of sliding slots are set on crossbeam, pulley is rotatably set in sliding slot, steel chain is wound around pulley;The utility model can solve the problem that dynamic support demand cannot be met.

This application provides a novel ship control hull mold casting system, relating to the field of metal casting molds. It includes a gating structure on one side of the cavity and an venting structure on the remaining sides of the cavity. The gating structure is stepped, positioned at the top of the cavity and higher than the cavity itself. The gating structure includes a riser, a main channel, two branch channels, and multiple sub-channels connected sequentially along the pouring direction. The two branch channels extend obliquely to both sides from the ends of the main channel, with their widths gradually decreasing. Each branch channel branches out two spaced sub-channels on its side facing the cavity. The height of the sub-channels gradually decreases, and their width gradually increases at their ends. The height of the sub-channels is lower than the height of the branch channels, and the height of the branch channels is lower than the height of the main channel. The venting structure includes multiple venting slag bags spaced apart and connected to the bottom of the outer side of the cavity. This application effectively solves the technical problems of turbulence and slag inclusions easily generated by traditional flow channels.