49results about How to "Avoid direct abrasion" patented technology

The invention relates to the technical field of polishing tools, in particular to a sponge wheel structure. The outer wall of the sponge wheel 1 is sleeved with at least one circle of abrasive belt paper 2 for polishing, and at least one kind of middle layer of a friction layer 3, a heat insulating layer 4 and a heat conducting and radiating layer 5 is arranged between the sponge wheel 1 and the abrasive belt paper 2, so that heat generated during polishing can be reduced, or heat can be quickly dissipated, and the service life is prolonged.

The present invention discloses a strain clamp not needing to be wound by an aluminum armor tape. The strain clamp comprises a clamp body, and the clamp body is equipped with an arc-shaped groove usedfor placing a conducting wire. The strain clamp is characterized in that a briquetting is arranged in the arc-shaped groove, a lower aluminum armor tape is arranged in the arc-shaped groove, and thebriquetting is equipped with an upper aluminum armor tape and is fixed in the arc-shaped groove via a plurality of U-shaped bolts to clamp the conducting wire; the horizontally arranged left connecting columns are arranged at one side of the clamp body integrally, and the horizontally arranged right connecting columns are arranged at the other side of the clamp body integrally; the left connectingplates are installed on the left connecting columns detachably, the right connecting plates are installed on the right connecting columns detachably, and the upper end parts of the left connecting plates and the right connecting plates are fixedly connected via the bolts, thereby saving the original complex and tedious aluminum armor tape winding, substantially improving the working efficiency, avoiding the situation that the conducting wire and the clamp body are contacted directly to be worn directly, and prolonging the service life of the conducting wire.

The invention discloses a permanent magnet clutch and an assembly method thereof. The permanent magnet clutch includes a driving disc and a driven disc. The driving disk includes a driving inner shaft, a magnet fixed disk, a plurality of magnetic rings 1, a driving outer shaft, a plurality of back iron blocks and a plurality of magnetic rings 2. The driven disc includes a driven shaft, an outer sleeve and an inner sleeve. The magnet fixed disk is coaxial with the active inner shaft, the magnetic coil one is installed on the magnet fixed disk, and the magnetic poles of the two adjacent magnetic coil ones are oppositely arranged. The active outer shaft is sleeved outside the active inner shaft, and the back iron block is embedded in the outer wall of the active outer shaft. The second magnetic coil is fixed on the active outer shaft, and the magnetic poles of the two adjacent magnetic coils are oppositely arranged. The magnetic ring two is covered on the corresponding back iron block, and is separated from the inner sleeve. The overcoat is sheathed outside the driving outer shaft, and the overcoat is fixed with the driven shaft to accommodate the driving disc. The inner sleeve is fixed on the inner wall of the outer coat. The master and slave parts of the clutch of the present invention have no direct contact, thereby avoiding mechanical wear of the clutch, reducing lubrication requirements, and having the advantages of vibration isolation and noise reduction.