40results about How to "Frictional stability" patented technology

A bidirectional pivot structure includes a horizontal rotation axis module, a rotation switching device and a vertical rotation axis module. The rotation switching device is pivotally connected to the horizontal rotation axis module and the vertical rotation axis module. The vertical rotation axis module includes an aligning element, a rotation position limiting element, a stabilizing element, a flexible element and a locking element. The rotation position limiting element has a position limiting convex dot and a position limiting arc fitted to a guide rail and a position limiting protrusion of the aligning element for limiting the rotary angle of the vertical rotation axis module. The stabilizing element has a positioning convex dot and a stabilizing protrusion fitted to the positioning holes of the aligning element to maintain a frictional stability. By the design of the aligning element, rotation position limiting element and stabilizing element, the effect of limiting and positioning the vertical rotation axis module can be achieved.

A bidirectional pivot structure includes a horizontal rotation axis module, a rotation switching device and a vertical rotation axis module. The rotation switching device is pivotally connected to the horizontal rotation axis module and the vertical rotation axis module. The vertical rotation axis module includes an aligning element, a rotation position limiting element, a stabilizing element, a flexible element and a locking element. The rotation position limiting element has a position limiting convex dot and a position limiting arc fitted to a guide rail and a position limiting protrusion of the aligning element for limiting the rotary angle of the vertical rotation axis module. The stabilizing element has a positioning convex dot and a stabilizing protrusion fitted to the positioning holes of the aligning element to maintain a frictional stability. By the design of the aligning element, rotation position limiting element and stabilizing element, the effect of limiting and positioning the vertical rotation axis module can be achieved.

The invention provides a double-disc type movable handbrake fishing reel, which includes a rocker rotating part, a main body part, a reel and a brake part, as well as a main body bracket part and a wrench part, the main body bracket part and the main body part are connected, and the wrench part and the The main body bracket part is connected; the wrench part includes a wrench, a wrench spring, a wrench pin, a brake drum pin and a brake drum part; The parts are connected in sequence, the protruding part is connected with the drum pin hole; the spanner spring is connected with the support hole, the spanner pin is inserted into the connection support hole, the spanner pin is inserted into the connection spanner spring, and the spanner spring is limited to the support hole; the brake drum The spring part and the wrench are connected by the brake drum pin; the support spring wires at both ends of the wrench spring are respectively connected to the support hole part and the main body bracket part. The products of the invention are diversified, and the flexible brake pads stably contact and rub against the reel, so that the reel will not be damaged, and the service life of the product is improved.

The invention related to an assembling device and a using method thereof for a railway vehicle coupler assembly. The assembling device comprises a working table, a rotary plate mechanism, a plurality of auxiliary supporting mechanisms and a push arm mechanism; the working table comprises a working table board, a baffle board, a protective board and a plurality of supporting frameworks; the rotary plate mechanism comprises a rotary plate connecting seat, a thrust bearing and a rotary plate base; each auxiliary supporting mechanism comprises a base and a supporting pulley, and the tops of the supporting pulleys are in contact with a bottom plate; the push arm mechanism comprises a translational motion driving device, a horizontal sliding chute and a sliding block, the translational motion driving device is fixed on a foundation, and the sliding block is disposed in the horizontal sliding chute; the top of one end of the sliding block is fixedly connected with a connecting block, and the top of the other end of the sliding block is fixedly connected with a push arm seat; a piston rod is arranged at an output end of the translational motion driving device, and the piston rod is fixedly connected with the connecting block; the push arm seat is rotatably connected with a roughly vertical push arm, and the upper end of the push arm is in contact with bottoms of the supporting frameworks; the push arm is connected with the connecting block through a reset spring, and a connecting point is located on the inner side of the push arm above a rotating shaft.

The invention discloses a method for improving the high toughness of a titanium aluminum nitrogen coating on the surface of a hard alloy. The method comprises the following steps of placing a pretreated hard alloy sample onto a double-glow plasma surface alloying furnace sample table, suspending a self-made target material, and placing an auxiliary cathode; feeding argon after vacuumizing, applying high voltage to a cathode and a source electrode, maintaining a certain differential pressure, carrying out tantalum impregnation treatment on the sample after re-sputter cleaning; then taking a tantalum-impregnated sample out, loading onto a substrate table of a magnetron sputtering device, installing a titanium aluminum composite target, adjusting the distance between the target material and the sample, carrying out ion beam sputtering cleaning, then enabling the substrate table to directly face a direct-current pulse magnetron sputtering target, feeding argon and nitrogen, adjusting to acertain proportion, starting a grid bias power supply and a direct-current pulse power supply, and preparing the titanium aluminum nitrogen coating. The titanium aluminum nitrogen composite coating prepared through the method has high fracture toughness and bonding strength.

The present invention discloses a crankshaft rotation tool, comprising a locating block and a handle connected with the locating block, wherein the locating block comprises a main locating block and two auxiliary locating blocks arranged at two sides of the main locating block, each auxiliary locating block is provided with an elastic component used for being tightly contacted with an excircle of a big end of a crankshaft, and the main locating block is provided with a locating hole used for cooperating with a locating pin at the end face of the big end of the crankshaft. The present invention aims to provide the crankshaft rotation tool which is simple in structure, convenient and reliable in use, and capable of forwards and reversely rotating the crankshaft, at the same time, the present invention also provides a method for rotating the crankshaft by adopting the crankshaft rotation tool.

The high-precision low-friction maglev-sliding composite guide rail is characterized in that between the bottom end surface of the moving part and the support surface of the guide rail, the bottom permanent magnet pair is oppositely installed with the same sex, and the repulsive force is formed to keep the bottom end surface of the moving part and the support surface of the guide rail in a non-polar position. Contact state, and form a positive pressure between the moving part and the top guide surface of the guide rail; take the side end surface of the moving part and the guide rail as the side guide surface, and on the other side end surface opposite to the side guide surface, The side permanent magnet pair is oppositely installed with the same sex, and the repulsive force formed by the side permanent magnet pair keeps the moving part and the guide rail in a non-contact state on the side end surface, and forms a positive pressure on the side guide surface. The invention combines the sliding guide rail with the magnetic levitation guide rail, and has the advantages of simple structure, high precision and low friction.

The invention relates to a long-service-life composite drill bit for repairing a casing damaged well. The long-service-life composite drill bit for repairing the casing damaged well is mainly composedof a plurality of rows of teeth, a rolling and sliding composite bearing, a sealing combination, a tooth palm body, a water hole and the like. The lower portion of the rolling and sliding composite bearing adopts a hollow roller structure, and the rolling and sliding composite bearing has the high heat dissipation capability, and can operate at a high speed. A rubber slide block is low in abrasion speed, and reduction of the contact pressure on a shaft neck is facilitated. The sealing combination has the advantages that rotary sealing, axial and radial sealing are achieved. The rolling and sliding composite bearing can bear the high revolution speed and high load, and has a high impact resistant property, and thus the bearing service life of the composite drill bit under the conditions ofthe high revolution speed and the medium and high drilling pressure is ensured. The revolution speed of the composite drill bit is increased, and the rotary sealing and axial and radial sealing effects are outstanding. The service life of the bearing under the dynamic load is longer than that under the maximal loading capacity, compared with a homogeneous composite drill bit for well repairing, the rubber slide block is arranged, and thus the bearing is prevented from being rapidly abraded.

The invention discloses a lubricating oil containing illite / montmorillonite clay nano powder and a preparation method thereof, belonging to the field of new application of phyllosilicate clay minerals. The lubricating oil is composed of oleic acid modified illite / montmorillonite clay nano powder and III type base oil, wherein the oleic acid modified illite / montmorillonite clay nano powder accounts for 0.5-2.5 wt% of the lubricating oil. The preparation method comprises the following steps: (1) crushing natural illite / montmorillonite clay minerals, and adding water to obtain a slurry; (2) regulating the pH value of the slurry, and dispersing; (3) screening the slurry through a sieve; (4) grinding the undersieve slurry to obtain a nano slurry; (5) adding oleic acid for modification; (6) drying the modified nano slurry to obtain nano dry powder; and (7) mixing the nano dry powder with III type base oil to obtain the lubricating oil containing illite / montmorillonite clay nano powder. By using the illite / montmorillonite clay nano powder as the additive, the lubricating oil has the advantages of favorable friction and wear resistance, environment friendliness and no pollution.

An electric brush for ABS (Anti-skid Brake System) comprises a brush body and a lead-out wire, wherein the brush body comprises 46 to 52 parts by weight of superfine electrolytic copper powder, 52 to 46 parts by weight of cementing powder and 2 parts by weight of modifier at; the cementing powder comprises 1.0 to 3.0 parts of high-purity carbon fiber powder, 23 to 27 parts of artificial graphite powder, 25 to 35 parts of high-purity sub-nanometer graphite powder, 18 to 22 parts of crystal graphite powder, 3 to 8 parts of graphitized carbon black powder, 2.5 to 4.5 parts of rare-earth tungsten disulfide composites and 5 to 15 parts of high-temperature resistant phenolic resin; and the modifier comprises 0.20 to 1.30 parts of vulcanization silver powder, 0.20 to 1.5 parts of stibonium powder and 0.5 to 1.5 parts of zinc powder. The chemical stability, the lubricating property, the electrical conductivity, the high-temperature resistance and the abrasion resistance of the electric brush provided by the invention are much better than that of the existing products.