7 results about "Friction Problem" patented technology

The application discloses a novel suspension type grinding and mixing machine group, which comprises a feeding and pre-melting single screw extruder, a suspension type grinding and mixing machine and a discharging single screw extruder arranged in sequence. The feeding and pre-melting single screw extruder carries out metering feeding and pre-melting, then feeds the material into the suspension type grinding and mixing machine to carry out mixing and dispersion, and finally feeds the material into the discharging single screw extruder to build pressure and extrude. The suspension type grinding and mixing machine comprises a transmission assembly, a rotating kneading unit and a mixer cylinder, the rotating kneading unit is suspended in the mixer cylinder, the output shaft of the transmission assembly is connected with the mandrel of the rotating kneading unit, the rotating kneading unit is composed of the mandrel, a conveying section and a mixing section, the tail end of the mandrel is lengthened to extend into the transmission box, the other end of the mandrel is in a conical structure, and the conveying section and the mixing section are sequentially sleeved outside. The application adopts a novel mixing principle, the kneading shaft of the kneading machine is completely suspended in the cylinder, and the friction problem between the mixing components and the cylinder is fundamentally avoided.

A feeding device for metal blanking machining is characterized by comprising a bottom supporting frame, a transverse movement driving mechanism, a feeding frame, a positioning assembly, a pushing mechanism, a jacking and separating mechanism and a material tail feeding mechanism, the transverse movement driving mechanism is installed above the bottom supporting frame, the feeding frame is connected to the upper portion of the transverse movement driving mechanism, and the positioning assembly is installed above the feeding frame. The metal plate deviation rectifying device comprises a feeding frame, a positioning assembly and a pushing mechanism are installed on the feeding frame, the front end of the feeding frame is connected with a jacking and separating mechanism, and a material tail feeding mechanism is arranged beside the jacking and separating mechanism. And in addition, the problem of friction between the metal plate and a lower die of stamping and cutting equipment in the transverse moving process is solved through the arrangement of the jacking and separating mechanism and the material tail feeding mechanism, and the material machining precision is further ensured.

The invention discloses a multifunctional pure rolling tapered roller bearing, and relates to the technical field of transmission machinery, slope conical flanges are arranged on the inner wall of a bearing outer ring, conical chamfers matched with the slope conical flanges are arranged at the two ends of a tapered roller, and linear rolling contact is formed between the slope conical flanges and the conical chamfers. According to the tapered roller bearing disclosed by the invention, the problem of staggered sliding friction between a flange on the bearing inner ring and the tapered roller in a traditional tapered roller bearing is solved, so that the tapered roller bearing disclosed by the invention cannot be blocked when bearing a certain axial force, and the tapered roller bearing disclosed by the invention not only can bear radial bearing force.

The utility model provides a cable conveying device with slippage protection, and aims to effectively avoid the problem of idle friction caused by cable conveying stagnation so as to protect a cable. The device comprises two groups of conveying belts which are oppositely arranged, a bracket frame for supporting and mounting the conveying belts, a mounting cover, a driving motor, an adjusting screw rod and a buffer system. A fixed power roller and an adjustable driven roller are installed on the installation cover, and the distance between the fixed power roller and the adjustable driven roller is adjusted through an adjusting screw rod so as to control the tensioning degree of the conveying belt. The driving motor drives the fixed power roller through the speed reducer to drive the conveying belt to operate, and cable conveying is achieved. The section design of the conveying belt is thick outside and narrow inside, so that the clamping surface with the cable is increased, and the friction force is homogenized. And when the cable stops, the conveying belt and the fixed power roller slip, so that the damage to the surface of the cable is avoided. According to the scheme, the safety and stability of cable conveying are improved, the service life of the cable is prolonged, and the cable conveying device meets the conveying requirements of cables of various specifications and materials.

The utility model relates to electronic equipment accessory technical field, especially a clamping assembly and support. The utility model discloses a clamping assembly, and first rack and second rack are symmetrically arranged at the both sides of transmission block, and first transmission gear is engaged between first rack and third rack, and second transmission gear is engaged between second rack and fourth rack, when transmission block slides along the length direction, can realize that first clamping arm and transmission block reverse motion, and because transmission block and second clamping arm joint, can directly drive second clamping arm movement, realize the synchronous opening and closing of first clamping arm and second clamping arm. The design makes the transmission of first clamping arm by two groups of symmetrical rack and transmission gear common action, guarantees that the stress of first clamping arm both sides is even, reduces the error and uneven friction problem that generates because unilateral transmission, this makes first clamping arm in the operation process more stable, smooth and accurate, avoids the deviation or jamming phenomenon.

The invention relates to the technical field of textile detection equipment, in particular to a woven fabric friction testing machine which comprises a testing machine body and a butterfly plate arranged on the testing machine body, a rotating shaft is mounted on the butterfly plate, a mounting seat is arranged at one end of the rotating shaft, and the woven fabric friction testing machine further comprises multiple groups of friction columns slidably arranged in the butterfly plate. One end of each friction column penetrates through the butterfly plate, makes contact with the rotating shaft and is used for applying variable friction resistance to the rotating shaft, the problem of uneven friction caused by traditional passive rotation is eliminated to a certain degree by actively regulating and controlling the contact pressure gradient, and the abrasion exposure degree difference is reduced; the test device can actively drive the test fabric to periodically rotate by a certain angle in cooperation with a resistance-drive seamless switching mechanism, the problem of uneven friction is further reduced, meanwhile, the state of the rotating shaft is switched through program control, specifically, low resistance, high resistance and autonomous rotation are switched, and then the diversity of device testing is improved.

The application provides an overcurrent protection relay and relates to the field of relays. The overcurrent protection relay comprises a relay main body, an iron core and a lock catch connecting rod installed in the relay main body, a supporting rod and an armature installed in the relay main body, and connecting pieces installed between the supporting rod and the armature, and elastic sheets are installed between the fixed parts of the two connecting pieces; the gravity of the armature and the elastic sheets form an included angle between the fixed part and the movable part of the connecting piece. The overcurrent protection relay forms a surface contact between the armature and the iron core, improves the adsorption efficiency of the iron core, shortens the response time, and adopts eccentric setting for the convex part, and the radius of the convex part increases along the rotation direction; the eccentric setting makes the length of the force arm of the convex part increase with the increase of the angle when the convex part rotates, and the radius of the convex part increases, so that the pushing force on the lock catch connecting rod is continuously amplified during the rotation process; even if the lubricating grease carbonizes and the friction problem exists at the fulcrum, the lock catch connecting rod can still be quickly pushed, the response time is further shortened, and the movement lag of the armature is prevented.