13 results about "Friction Problem" patented technology

The utility model relates to a hydraulic turnover plow, in particular to a unilateral wheel depth limiting assembly of a hydraulic turnover plow and a depth limiting seat of the hydraulic turnover plow, the depth limiting seat comprises a depth limiting pipe and a depth limiting shaft, a mounting hole and a bearing mounting position are arranged in the depth limiting pipe, and a joint bearing is arranged at the bearing mounting position. The depth limiting shaft penetrates through the mounting hole and is connected with each joint bearing, so that the problem of friction between the depth limiting pipe and the depth limiting shaft and the problem of impact on the depth limiting pipe when the hydraulic turnover plow is turned over are solved; according to the unilateral wheel depth limiting assembly of the hydraulic turnover plow, a depth limiting seat of the hydraulic turnover plow is applied, and friction loss between a depth limiting shaft and a depth limiting pipe is effectively avoided; in addition, the utility model further discloses a double-clamping depth limiting assembly of the hydraulic turnover plow, wherein the depth limiting seat of the hydraulic turnover plow is applied to the double-clamping depth limiting assembly.

The utility model belongs to the technical field of non-variable-capacity pumps, and relates to a vortex magnetic drive pump capable of reducing axial movement of a pump shaft, which comprises a pump body, a front end cover, an impeller, the pump shaft, a motor, an inner magnetic rotor, an outer magnetic rotor, an isolation sleeve, a sliding bearing assembly, a first check ring and a second check ring, a containing cavity is arranged at the front end of the pump body, and the impeller is arranged in the containing cavity; the pump shaft is installed in the pump body through a sliding bearing assembly, one end of the pump shaft is connected with the impeller, the impeller has the moving allowance in the axial direction, and the other end of the pump shaft is connected with the inner magnetic rotor. The outer magnetic rotor is installed on a motor shaft of the motor, and the isolation sleeve is located between the inner magnetic rotor and the outer magnetic rotor. A limiting table is arranged at the end, close to the impeller, of the pump shaft, the first check ring is installed between the sliding bearing assembly and the limiting table, and the second check ring is arranged between the inner magnetic rotor and the sliding bearing assembly. According to the sliding bearing, a thrust bearing does not need to be installed, the radial friction problem between the sliding bearing and the thrust bearing can be avoided, and the production and maintenance cost is reduced.

The invention discloses a robot joint friction compensation method and system based on a chip special for a robot. The method comprises the steps that 1, a robot dynamic model is established; 2, a robot motion data set is collected and obtained; step 3, establishing an Informer-LSTM (Long Short Term Memory) friction model; step 4, the Inform-LSTM friction model is trained, so that an optimized Inform-LSTM friction model can be obtained; step 5, constructing a controller based on a chip special for the robot; step 6, deploying the Informer-LSTM friction model to a controller of the special chip for the robot; and 7, the friction force of the robot in the current state is solved, and the obtained friction force is compensated through the feed-forward torque. According to the invention, accurate fitting of friction data of different long and short time sequences can be realized, friction problems at zero speed and extremely low speed are focused, and a special chip for a robot is provided, so that the reasoning calculation performance of a friction force neural network model is improved, and real-time compensation of friction force is realized.

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 provides an axial pre-tightening device for a retainer of a roller screw. The axial pre-tightening device comprises a screw, a nut, a roller group, a retainer group and a pre-tightening part group, the pin roller group is provided with a plurality of first pin rollers and second pin rollers which are arranged in a staggered mode, and the periphery of each pin roller is provided with annular teeth which are meshed with a thread structure of the screw and an annular groove section in the nut. The retainer group is arranged at the two ends of the roller group, and a first gap and a second gap which are staggered are formed by utilizing the axial length difference between the two ends of the first roller and the second roller. The pre-tightening piece set penetrates through the retaining piece set in the axial direction and exerts adjustable fastening force, so that the retaining piece set clamps the roller set, then adjustable axial pre-pressing force opposite in direction is exerted on the first roller and the second roller respectively, and the staggered two-way pre-pressing effect is achieved. By means of the design, back clearance can be eliminated, pure rolling contact is guaranteed, transmission stability is improved, the service life is prolonged, retaining rings are omitted, space is saved, and friction is avoided.

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 invention provides an overcurrent protection relay, and relates to the field of relays. The over-current protection relay comprises a relay body, an iron core and a lock catch connecting rod which are installed in the relay body, and further comprises a supporting rod and an armature which are installed in the relay body, connecting pieces are installed between the supporting rod and the armature, and an elastic piece is installed between fixing parts of the two connecting pieces. The gravity of the armature cooperates with the elastic sheet to form an included angle between the fixed part and the movable part of the connecting piece; according to the over-current protection relay, the armature and the iron core form surface contact, the adsorption efficiency of the iron core is improved, the response time is shortened, the lug boss is eccentrically arranged, the radius is gradually increased along the rotation direction, and the eccentric arrangement enables the arm of force to be lengthened along with the increase of the angle when the lug boss rotates; in the rotating process, the thrust on the lock catch connecting rod is continuously amplified, even if lubricating grease carbonization and friction problems exist in a fulcrum, the lock catch connecting rod can still be rapidly pushed, the response time is further shortened, and motion lag of the armature is prevented.

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.

The invention discloses a pressure test board for a large oil cylinder. The pressure test board comprises a base, a test board body, a gantry support frame structure, a safety protection mechanism, an oil leakage detection mechanism and a leaked oil collection mechanism. According to the invention, the guide mechanism is arranged, and a second hydraulic cylinder is used for lifting a guide slide rail to replace a traditional elastic slide guide rail, so that the problem of jamming and hard friction in the entering process of the test board when a large oil cylinder is heavy-loaded is effectively solved, the service life of the test board is prolonged, and the test efficiency of the test board is improved; the oil cylinder oil leakage detection device can effectively protect operators in the testing process, gives an alarm and takes emergency measures in time when abnormal conditions occur, greatly reduces the probability of safety accidents, realizes real-time monitoring and timely collection of the oil leakage condition of the oil cylinder through the combination of the oil leakage detection mechanism and the oil leakage collection mechanism, and improves the working efficiency. The quality problem of the oil cylinder can be found in time, and environmental pollution and resource waste caused by oil leakage can be avoided.