139results about How to "Improve wear and tear" patented technology

The invention provides an ultrasonic vibration assisted spiral thread milling and grinding method, and belongs to the technical field of machining and tools. A profiling grinding wheel tool is used in the method, and the tool is mounted on a spindle of an ultrasonic machine tool by an ultrasonic vibration hilt. In the method, the axis of the tool is parallel to the center of the axis of a threaded hole, and a spiral milling mode which is formed by compounding four movements including rotation of the grinding wheel tool, revelation of the profiling grinding wheel tool around the axis of the threaded hole, axial feeding of the profiling grinding wheel tool and axial vibration of the profiling grinding wheel tool along with the ultrasonic vibration hilt is adopted. By the method, a cutting force of hard and crisp materials difficult to machine in a thread machining process can be reduced effectively, the circumstance that a screw tap is broken in a tapping process due to insufficient strength to cause scrapping of parts is avoided, the thread machining quality and machining efficiency are improved, and abrasion of the tool is improved.

The invention provides a detection system and a detection method of friction elevator rope groove wear loss, and belongs to the detection system and the detection method of the elevator rope groove wear loss. The system comprises an upper computer, a laser displacement sensor, a collector, a direct-current power source module and a sensor support. The laser displacement sensor is installed on the sensor support, and the output end of the laser displacement sensor is connected with the collector. An encoder is installed on a roller of an elevator, the output end of the encoder is connected with an Ethernet, and the output end of the collector is connected with the input end of the upper computer through an interface of the Ethernet. The upper computer achieves real-time analysis of the on-line detection of the friction elevator rope groove wear loss and determines the wear loss conditions of different positions according the encoder. The detection system and the detection method have the advantages that the real-time quick on-line detection of the wear loss of a friction liner can be achieved, the friction liner needing to be replaced can be positioned precisely in real time, the working intensity of workers is reduced, the service life of a steel wire rope is prolonged, and the problem that real-time monitoring of the wear loss of the friction line cannot be achieved in a project is solved.

The sucker rod rotating rope hanger consists of a casing, a butterfly spring, a bearing, a bearer, a sucker rod seat, a ratchet wheel, a driving member, and other parts. Its operation principle is that during the sucker rod moves upwards, the increased sucker rod weight and the compressed spring make the driving member rotates clockwise while moving downwards; during the sucker rod moves downwards, the decreased sucker rod weight and the extending spring and the single direction rotating ratchet wheel make the driving member rotates counterclockwise idly; so that each motion period of the sucker rod makes the sucker rod under the action of the rope hanger rotate by some angle.

The invention relates to a process for preparing carbon forming powder, in particular to a new process for preparing carbon forming powder by adopting an air swept type ball milling system. In the invention, equipment mainly comprises a raw material bin, an air swept type ball mill, a high-efficiency rotor type grader, a gas tank pulse bag type dust collector, a main exhaust fan and a finished powder bin. In the main work process of the invention, a raw material is fed and added to the air swept type ball mill through a feeder and is subjected to rough and fine powder grading through the high-efficiency rotor type grader, rough particles are returned to the ball mill for pulverizing once again, and fine particles enter the gas tank pulse bag type dust collector for collection. The invention has the technological performance advantages of high systemic force supply, low power consumption for unit product, high finished powder purity, and good uniformity and stability, and completely eliminates the phenomena of air leakage and ash flying in the traditional process because of the operation in a negative pressure state. The process is not only suitable for the optimization and technological improvement on the traditional process in the production process of the carbon forming powder, but also suitable for new projects of a carbon forming powder preparation system.

The invention relates to a friction material which comprises the following components in percentage by weight: 62-72% of copper, 6-15% iron, 2-6% of aluminum, 3-8% of tin, 1-5% of nickel, 3-10% of cyanite (Al2O3.SiO2), 2-7% of boron nitride, 8-16% of graphite and 1-4% of molybdenum disulfide. The process for manufacturing an aircraft braking disc made from the friction material comprises the following steps: mixing a mixture of the friction material, pressing and moulding, preparing a steel back, and pressurizing and sintering the aircraft braking disc. Compared with the prior art, the mechanical performance, the physical performance, the friction and wear resistance, the use reliability and the service life of the aircraft braking disc made from the friction material reach or exceed those of the imported aircraft braking pair, and the aircraft braking disc made from the friction material can completely meet the use requirement of the Boeing 737 aircraft.

The invention discloses a high-precision valve control method. The method comprises the following steps of 1, setting system parameters; 2, judging a current valve location value of a valve; 3, according to a target valve location value, calculating a motion stroke at this time; 4, judging the motion stroke at this time; 5, planning a speed curve, wherein according to the motion stroke at this time, the speed curve is planned, and is divided into an acceleration phase, a uniform speed phage and a deceleration phase; 6, controlling the rotational speed according to the speed curve planed in step 5. By means of the high-precision valve control method, the motion control precision of an executor is improved, the running speed can be flexibly adjusted, mechanical shock brought in running is lowered, the material wearing condition of a transmission structure is improved, and the service life of products is prolonged.

The invention discloses an organic luminescent display with a solar cell. The organic luminescent display comprises a substrate, at least one organic luminescent unit, and at least one solar cell unit. The organic solar unit is arranged on one side of the substrate and comprises a first electrode layer, an organic luminescent material layer, and a second electrode layer. The organic luminescent material layer is arranged between the first electrode layer and the second electrode layer. The first electrode layer is arranged between the organic luminescent material layer and the substrate. The solar cell unit is arranged on one side of the substrate and comprises a third electrode layer and an organic solar cell material layer. The organic solar cell material layer is arranged between the second electrode layer and the third electrode layer. The provided organic solar cell unit can provide a similar effect of a color light filter, can directly absorb the lights in the organic luminescent display and external lights, is capable of converting the light energy into electric energy, and improves the situation of energy loss.

The invention provides a short rzeppa synchronous universal coupling, which is mainly used for the power transmission with short distance, small inclination angle and high rotating speed in the metallurgical, heavy-duty, mining, lifting, transportation machinery and other industries. The coupling consists of two all-sealed rzeppa universal joints which mesh with each other through two outer ringsprovided with teeth on the end surfaces and are fastened through a bolt, wherein an inner hole of an inner ring is a spline or keyway hole and is matched with corresponding shaft extension to achive the transmission of a driving/driven end; a steel ball is arranged between the inner ring and the outer rings; the steel ball is arranged in a window of a cage; the cage is embedded between the inner ring and the outer rings; a link bolt does not bear shear force formed by torque transmission ; and torque is transmitted to the driven end through an inner-ring channel of the driving end, the steel ball and an outer-ring channel. The coupling has the advantages of constant-speed transmission, smooth operation, compact structure, high bearing capacity, great angular compensation (generally up to 5degrees), strong adaptability to field work, convenient installation and adjustment, improvement on internal friction and wear, longer life span and capability of effectively preventing vibration from causing bolts to loosen.

A piping (1) comprises straight pipe sections (2) and curved pipe bends (3) having each an inner pipe (5; 22), an outer pipe (6; 23) and end, double-layered coupling flanges (7; 16, 17) composed of inner wear rings (8; 18, 19) and outer annular collars (9; 20, 21) with coupling grooves (10). Pipe sections (2) and/or pipe bends (3) which follow one another in sections are detachably coupled by split couplings (4) that act as revolute joints and pipe connectors. The wear rings (19) in the coupling flanges (17) of the pipe bends (3) at the outlet end of the piping have different wall thicknesses about their circumferences, while the wear rings (18) in the coupling flanges (16) at the inlet end of the piping and in the coupling flanges (7) of the pipe sections (2) have a uniform wall thickness about their circumference.; The wall thickness of the wear rings (19) in the coupling flanges (17) of the pipe bends (3) at the outlet end of the piping is greater in the circumferential sections further away from the curvature mid-points (28) of the pipe bends (3) than in the circumferential sections closer to the curvature mid-points (28).

The invention discloses a skiving cutter feeding method realizing singe-edge cutter relieving radical cutter feeding. The cutter feeding method belongs to the improvement on a tooth profile-following radical cutter feeding method. In several former times of cutter feeding of a cutter, when the cutter completes radical cutter feeding once, a workpiece does not rotate for a peripheral compensation rotating angle theta i and a cutter avoiding angle phi i; during the cutter feeding of the cutter in a next time, a cutting-out side cutter edge of the cutter is staggered for a gap with a processed tooth surface of a workpiece; the extrusion friction between the cutting-out side cutting edge and the tooth surface of the workpiece is avoided; the last one or several last radical cutter feeding of the cutter is for finish machining; single-edge cutter relieving by the workpiece is avoided, so that the processing precision of the tooth surface of the workpiece is ensured. When the multi-time radical cutter feeding is needed for gear mechining, the skiving cutter feeding method realizing single-edge cutter relieving radical cutter feeding can prolong the service life of the cutter through being compared with the tooth profile-following radical cutter feeding method.

A pneumatic vehicle tyre for commercial vehicles, comprising a carcass (5), a breaker belt (9) and a profiled tread rubber (10), wherein the breaker belt (9) is formed by at least three belt plies (13, 14, 15), of which the radially inner ply (13) and the radially outer ply (15) are formed as working plies with parallel steel reinforcing elements (23, 25) embedded in rubber, wherein the reinforcing elements (23, 25) of the working plies (13, 15) have opposed axial directions of inclination and an angle in relation to the circumferential direction of 10 DEG -45 DEG , and wherein the belt ply (14) arranged between the two working plies (13, 15) is divided in the axial direction and is formed by two axial outer peripheral ply portions (18, 19) and one central ply portion (14) arranged axially between said peripheral portions, wherein the two peripheral ply portions (18, 19); are formed as zero degree plies with reinforcing elements (28, 29), which include an angle in relation to the circumferential direction U of 0 DEG -5 DEG , and the central ply portion (14) is formed with reinforcing elements (24) which include an angle in relation to the circumferential direction U of 5 DEG -90 DEG.

The invention discloses an exhaust control method. The exhaust control method comprises following steps: supplying air to one surface cover of the breathing auxiliary apparatus; detecting the breathing state of a user wearing the surface cover; and decreasing an opening area of an exhaust structure of the surface cover through a driving unit of the breathing auxiliary apparatus when the user inhales and increasing the opening area of the exhaust structure through the driving unit when the user exhales. The invention further provides other exhaust control methods and a breathing auxiliary apparatus. The exhaust control method and the breathing auxiliary apparatus applying the same helpeffectively decrease noise caused by rapid speed change of a host.

The invention belongs to the technical field of electrolysis smelting, and discloses a plate peeling machine group. The machine group comprises a plate peeling system used for peeling sedimentation plates off, an electrode plate inputting system used for delivering electrolyzed cathode plates to the plate peeling system, and a conductive bar cleaning and brushing system used for cleaning and brushing the peeled cathode plates so that the cathode plates can enter the next electrolysis circulation; the electrode plate inputting system comprises a washing chamber and a push plate range expandingdevice used for expanding the range between the electrode plates to be put into the washing chamber; the plate peeling system comprises a swing arm type plate peeling device entering from the part above the sedimentation plates to peel the sedimentation plates off from the cathode plates and an auxiliary separation device entering from the two sides of the sedimentation plates to assist separation; the conductive bar cleaning and brushing system comprises a conductive bar cleaning and brushing device used for cleaning conductive bars of the cathode plates. According to the machine group, by the arrangement of the plate peeling system, the scratching of the surfaces of the cathode plates can be prevented to reduce the peeling difficulty of the sedimentation plates, by the arrangement of theconductive bar cleaning and brushing system, the conductive bars can be timely cleaned to reduce the resistance of the cathode plates and improve the electrolysis efficiency of a workshop, by the arrangement of the electrode plate inputting system, the electrode plates can be thoroughly cleaned, and finally the sedimentation plates with high quality can be obtained.

The invention provides a lithium-based lubricating grease composition and a preparation method for the lithium-based lubricating grease composition. The lithium-based lubricating grease is prepared by saponifying special high-acid value mineral base oil. The preparation method comprises the following steps of putting the high-acid value mineral base oil into a kettle, adding 12-lithium hydroxyl-stearate soap and lithium stearate soap, and performing stirring and heating; when temperature rises to 210 to 220 DEG C, keeping the temperature, and performing stirring for 1 to 5 minutes; putting ordinary mineral base oil into the kettle, quickly cooling the materials, and adding an additive when the temperature reaches 140 to 150 DEG C; uniformly stirring the materials, and discharging the materials from the kettle; grinding the materials to obtain a finished product by using a three-roller grinding machine. According to the lubricating grease composition, conventional base oil resources in China are reasonably utilized instead of a naphthenic acid raw material, so that the production cost of the lubricating grease is remarkably lowered; the lubricating grease has high mechanical stability, colloid stability and lubricating performance, and the friction and abrasion conditions of mechanical equipment during operation can also be effectively improved; the produced lubricating grease can be used for lubricating automobiles, construction machinery and other mechanical equipment.

The invention discloses a feeding adjusting device for a screening machine. The feeding adjusting device comprises a rack, and a feeding port fixing slot, a feeding port adjustable slot and a blanking port formed in the rack. The feeding port fixing slot is hinged to the feeding port adjustable slot, the feeding port adjustable slot is connected to a driving device, the driving device can drive the feeding port adjustable slot to rotate, the feeding port fixing slot and the feeding port adjustable slot are formed in the top of the blanking port, the feeding port fixing slot is formed obliquely toward the direction of the blanking port, the blanking port can be connected to a feed inlet of the screening machine, and a material is conveyed to a screen surface of the screening machine. By arranging the feeding port adjustable slot, a blanking position of the material is adjusted. The feeding port fixing slot is formed obliquely toward the direction of the blanking port, so that the material slides under the action of gravity. The feeding port fixing slot is hinged to the feeding port adjustable slot, and the driving device changes a projection position of the end, far away from the feeding port fixing slot, of the feeding port adjustable slot in the blanking port by driving the feeding port adjustable slot to rotate, so that a purpose of adjusting the material blanking position is achieved.

The invention discloses a multifunctional workover rig, which comprises a framework, a power system, a crawler traveling mechanism and an operating system, wherein the power system comprises an engine, a hydraulic oil pump and a hydraulic control system which are used for providing working pressures for hydraulic motors of the operating system and the crawler traveling mechanism respectively; the operating system comprises a multifunctional power arm (4), a fast-assembling connecting mechanism assembly (17), a power output device (2) and a three-point hydraulic suspension assembly (1); the fast-assembling connecting mechanism assembly (17) is arranged at the front end of the multifunctional power arm (4); and most components of the multifunctional workover rig are made by bending and welding steel plates. The multifunctional workover rig has a compact and small structure without a cast part, a forged piece or a stamped part. Besides performing engineer operation and dozens of operations such as bulldozing, loading, excavating, snow shoveling, forest industry and the like, the multifunctional workover rig can finish the operations of plowing, harrowing, sowing, harvesting, electric power generation, water pumping and the like due to the three-point hydraulic suspension assembly and the power output shaft.

The invention discloses an abrasion resistance finned tube and a heat exchanger. The abrasion resistance finned tube comprises a base tube and fins arranged on the outer surface of the base tube. The abrasion resistance finned tube is characterized in that a drainage groove with an opening at the upper end is formed in the incident flow surfaces of the fins, and the height of the drainage groove is 1/2 to 4/5 of the height of the fins; and the width of the drainage groove is 1/6-1/4 of the diameter of the base tube; and the fins are parallel fins or spiral fins arranged at internals. Compared with the prior art, according to the abrasion resistance finned tube, the groove is formed in the incident flow surfaces of the fins on spiral or circular finned tubes, the influence on the extension surface area of the finned tubes is not large, and the advantage of large heat exchange areas of the finned tubes is retained. Through the adjustment of the height and the width of the drainage groove, the abrasion condition of traditional spiral finned tubes or circular finned tubes is effectively improved, and the abrasion resistance property is superior to that of H type finned tubes. Meanwhile, since the fins of the abrasion resistance finned tube are in a circular arc shape, the advantage of the abrasion resistance property of the fins is more obvious than the advantage of the H type finned tubes

The invention provides an arc extinguishing chamber for a high-voltage circuit breaker. The arc extinguishing chamber comprises a motion reversing mechanism, a driving side contact and a driven side contact, wherein the driving side contact and the driven side contact are arranged on the motion reversing mechanism separately and move oppositely; the motion reversing mechanism comprises a driving side push-pull rod connected with the driving side contact, a driven side push-pull rod connected to the driven side contact, a reversing device and an integrally molded guide rail; two motion channelsfor opposite motion of the driving side push-pull rod and the driven side push-pull rod are arranged in the guide rail; the guide rail is provided with a driving side push-pull rod sliding rail and adriven side push-pull rod sliding rail; the driving side push-pull rod and the driven side push-pull rod are arranged in the corresponding sliding rails through shaft pins in a sliding manner; a limiter is arranged at one side of the driving side push-pull rod sliding rail and/or the driven side push-pull rod sliding rail for limiting and auxiliary guiding of the driving side push-pull rod and the driven side push-pull rod. A double-acting arc extinguishing principle is adopted by the arc extinguishing chamber, so that the arc extinguishing chamber is simple in structure, reasonable in design, simple in operation and reliable in working, the stability is greatly improved and the mechanical life is greatly prolonged.

The invention discloses a high-performance sound-absorbing damping soft porcelain decorative material and a preparation method thereof, and belongs to the field of novel building decorative materials.The high-performance sound-absorbing damping soft porcelain decorative material sequentially comprises a soft porcelain decoration surface layer, a sound-absorbing layer and a sound-insulating damping layer, wherein the soft porcelain decoration surface layer comprises the following components in parts by weight: 10-25 parts of silicone acrylic emulsion, 30-60 parts of quartz sand, 10-30 parts ofcement, 5-15 parts of a flame retardant, 0.5-2 parts of an inorganic pigment, 0.5-2 parts of a silane coupling agent and 10-25 parts of water, and the sound-absorbing layer and the sound-insulating damping layer respectively contain a sound-absorbing material and a sound-insulating material. According to the invention, the soft porcelain decoration surface layer is good in hydrophobicity and stain resistance, the sound-absorbing layer and the sound-insulating damping layer are obvious in noise reduction effect of, the decoration surface layer, the sound-absorbing layer and the sound-insulating damping layer are connected into a whole through slurry materials, and the prepared high-performance sound-absorbing damping soft porcelain decorative material has good flexibility and tensile resistance, has obvious sound-absorbing and noise-reducing effects, relieves the current noise pollution pressure in China, improves the living environment of people, and is an excellent building decorative material.