93 results about "Abrasion (mechanical)" patented technology

The invention relates to the field of abrasion morphology determination and abrasion loss calculation, and discloses an abrasion morphology and contact stress analysis and prediction method and system based on a rough contact surface, a medium and equipment, and the method comprises the steps: constructing a dynamic contact model, and obtaining an accurate movement rule and a stress analysis result of a moving mechanical component; constructing a three-dimensional rough surface digital twinborn model conforming to an actual contact surface; establishing a contact stress field multi-physical field analysis model to obtain elastic deformation and a friction heat effect; based on the contact stress distribution and the local wear rate which are obtained in real time, carrying out dynamic reconstruction on the wear morphology, and establishing a nonlinear iteration relation between the wear loss and the contact stress distribution; determining an accurate boundary condition based on an accurate movement rule and a stress analysis result of the moving mechanical component, and constructing a failure criterion based on contact stress gradient mutation and surface roughness evolution; key parameters are calibrated through experiments, and a mapping relation database of wear rate-stress state-morphological characteristics is established so as to carry out friction wear analysis.

The invention relates to the field of high polymer materials, and discloses a high-wear-resistance elastomer sole material and a preparation method thereof.The material comprises an elastomer matrix and surface-modified boron nitride nanosheets; the elastomer matrix comprises a first dynamic network and a second dynamic network which are formed through crosslinking of dynamic covalent bonds, and the first dynamic network and the second dynamic network are based on different types of dynamic covalent bonds and have different dissociation activation energy barriers or external stimulus response conditions. The surface-modified boron nitride nanosheet and the second dynamic network form a selective interface enhancement effect; the preparation method comprises the steps of polymer functionalization, nanosheet surface modification, melt blending reaction net forming, forming and the like. The obtained elastomer sole material not only has excellent wear resistance and mechanical properties, but also can realize self-repair of graded response aiming at damages of different degrees, and the service life of the material is remarkably prolonged.

The invention relates to the technical field of energy-saving door and window machining, and particularly discloses an energy-saving door and window machining manipulator device which comprises a manipulator, a first guide rod, a recording mechanism and a clamping jaw. The recording mechanism is arranged at the top end of the right side of the mechanical arm, and the clamping jaw is arranged at the right end of the recording mechanism. The device effectively overcomes the defect that a traditional detection method cannot quantitatively evaluate the wear process of the sliding rail, can accurately record the change rule of the friction characteristic of the sliding rail under different opening and closing times, visually reflects the wear critical point through the fluctuation characteristic of the corrugated line, and can accurately predict the failure threshold value of a hardware system. Test data not only reveals the corresponding relation between sliding rail abrasion and opening and closing times, but also can provide a scientific basis for optimizing hardware material pairing and improving a lubricating scheme, the durability design level of energy-saving door and window products is remarkably improved, the technology span from passive detection to active prediction is achieved, and the method is suitable for popularization and application. And a durability test result has a higher engineering guidance value.

The invention relates to a quasi-static straight gear wear numerical analysis method, and belongs to the technical field of mechanical engineering. The method comprises the following steps: calculating a dynamic wear coefficient by using a mixed lubrication model; the contact pressure and the sliding distance are calculated in an integral form, a straight gear quasi-static numerical wear model is established by using matlab software with the help of an Archard formula, and a wear value is calculated; the influence rule of the modulus, the torque and the tooth width on the abrasion loss is obtained, and meanwhile the significance of the influence of the three factors is analyzed through an orthogonal experiment method. Compared with the prior art, the method has the advantages that the problem that the calculation of the contact pressure is greatly influenced by the grid units is researched and solved, so that the obtained contact pressure value is more accurate, and the tooth surface wear is reduced according to the rule and significance analysis of the influence of various factors.

The invention provides a steel wire rope take-up tension self-adaptive adjusting mechanism, and relates to the technical field of steel wire rope production and machining. The mechanism comprises a bearing frame, a tension self-adjusting mechanism, an arc-shaped detection plate, a take-up device, a self-adaptive early warning mechanism, an early warning block and a cleaning piece. The tension self-adjusting mechanism detects the change of the winding diameter of a steel wire rope through an arc-shaped detection plate so as to control fine adjustment of the distance between tensioning wheels, and the tension is adjusted in a self-adaptive mode along with the change of the winding diameter through a mechanical linkage structure. The self-adaptive early warning mechanism triggers signals through centrifugal displacement of an early warning block, and mechanical locking is achieved when the steel wire rope is taken up. The cleaning piece can clean oil stains and impurities on the surface of the steel wire rope and relieve the abrasion process; the mechanism effectively solves the problems that traditional take-up equipment is large in tension fluctuation, lacks an effective emergency protection mechanism and is not thorough in steel wire rope cleaning, and has the advantages of being high in stability and high in response speed.

The invention relates to the technical field of building materials, and particularly discloses ultra-high performance concrete containing coarse aggregate, a preparation method of the ultra-high performance concrete and a method for testing the abrasion resistance of the ultra-high performance concrete, the ultra-high performance concrete containing the coarse aggregate comprises cement, a mineral admixture, fine aggregate, steel fiber, the coarse aggregate, an additive and water, and the coarse aggregate is pretreated through cationic emulsified asphalt. The coarse aggregate ultra-high performance concrete is subjected to molding preparation, demolding maintenance, vacuum water saturation and other processes to obtain an original test piece for testing the abrasion resistance, two sub test pieces are obtained after radial cutting, and the mass of the test pieces before and after abrasion is weighed to obtain the abrasion resistance strength. According to the testing method, the abrasion resistance of the surface mortar layer and the abrasion resistance of the internal aggregate layer in the same test piece can be compared, and the abrasion resistance of the ultra-high performance concrete containing the coarse aggregate can be evaluated more comprehensively and objectively. The coarse-aggregate ultra-high-performance concrete has excellent mechanical properties, the abrasion resistance is enhanced, the use amount of a cementing material can be effectively reduced, and the production cost is reduced.

The invention relates to a shield tunneling machine tunneling construction method for stratums with different sand contents, which comprises the following steps of: S1, investigating characteristic parameters, including types, sand contents and mechanical parameters, of stratums to be tunneled; s2, installing an ultrasonic-assisted hob system integrated with an ultrasonic excitation module; s3, ultrasonic parameters and shield tunneling parameters are set according to the characteristic parameters of the stratum; and S4, shield tunneling is started, ultrasonic parameters and shield tunneling parameters are adjusted in real time through the cooperative control module, vibration, hob abrasion and mud cake forming conditions in the construction process are monitored, and in the tunneling process, the operation mode of the cooperative control module is that on the basis of multi-dimensional monitoring data collected by a vibration sensor, an abrasion detection device and a slag sample analysis sensor, the ultrasonic parameters and the shield tunneling parameters are adjusted in real time. Parameters are dynamically adjusted according to stratum types and sensitive area requirements, the single adjustment amplitude and adjacent adjustment intervals of the parameters are controlled, the adjustment effect is verified in real time through a sensor, and closed-loop control over parameter adjustment and monitoring is formed.

The invention relates to a kinematics error correction method and system of an explosion-proof robot. The kinematics error correction method comprises the steps that joint information is collected through a laser calibration instrument with preset precision; performing feature extraction on the collected information to obtain a joint feature set containing multiple features; inputting a skew compensation model to perform modeling compensation on the non-orthogonal joint error to generate a compensation matrix, and generating a control instruction based on the corrected model; according to the method, joint characteristics and dynamic characteristics are comprehensively considered, the problem that actual kinematics characteristics deviate from a theoretical model due to mechanical manufacturing tolerance, assembly errors and abrasion is effectively solved, accurate correction of kinematics errors is achieved, the space positioning and trajectory tracking capacity of a robot in dangerous environment operation is improved, and the method is suitable for popularization and application. And the security and efficiency of task execution are ensured.

The invention relates to a soft rock tunnel quick reloading mechanical abrasion cutting construction method, and mainly relates to a temporary inverted arch template system, a steel frame temporary upright support, a steel arch quick extension technology, a cyclic utilization prefabricated grout stop wall and an advanced jet grouting pile construction platform. The structure mainly comprises a tunnel primary lining, an inverted arch, an inverted arch template, a steel trestle, a temporary upright support, a steel frame, a tunnel face, an advanced jet grouting pile and the like. According to the abrasion cutting construction method for the soft rock tunnel rapid reloading machine, a more scientific and reasonable solution is provided for construction of the soft rock hydraulic tunnel, and positive contributions are made for promoting development of hydraulic engineering construction.

The invention provides aluminum profile polishing equipment, and relates to the technical field of mechanical equipment, the aluminum profile polishing equipment comprises a sanding assembly, the sanding assembly is provided with an abrasive belt mounting base, the upper end of the abrasive belt mounting base is connected with an abrasive belt driving motor, and the abrasive belt driving motor is connected with a driving main wheel; an abrasive belt pressing part and a vibration grinding part are arranged on the two sides of the middle of the forked frame body correspondingly, the abrasive belt pressing part is used for pressing the abrasive belt downwards in the process of driving the abrasive belt to grind, and the attaching force of the driving abrasive belt and a grinding tool is increased. The polishing device has the beneficial effects that the abrasive belt pressing and polishing component and the vibration polishing component are integrated, large-area efficient polishing can be achieved, complex areas such as grooves and welding seams can be precisely processed through the vibration abrasive disc, multiple times of turnover of workpieces are avoided, the first tensioning rod body and the second tensioning rod body are arranged for dual-rod cooperative tensioning, and the polishing efficiency is improved. Rapid and large-range tensioning adjustment is realized; and trace elongation caused by abrasion can be automatically compensated, the tension is kept constant, and the polishing precision and efficiency are powerfully guaranteed.

The invention belongs to the technical field of repair materials, and particularly discloses a non-excavation pipeline local repair material and a preparation method thereof. The non-excavation pipeline local repair material is prepared from the following raw materials in parts by weight: 120 to 130 parts of PVC (Polyvinyl Chloride) resin, 30 to 35 parts of modified ramie fiber, 10 to 15 parts of gypsum, 28 to 32 parts of modified zeolite powder, 7 to 9 parts of white oil, 6 to 8 parts of calcium-zinc stabilizer and 4 to 6 parts of silane coupling agent. The non-excavation pipeline local repair material prepared in the invention has excellent mechanical properties, wear resistance and corrosion resistance, the aging resistance of the repair material is improved, and the service life of the repaired pipeline is prolonged.

The invention discloses a sinter quality inspection method. Physical and mechanical performance inspection is mainly used for evaluating particle size distribution and wear resistance strength of sinter through size fraction screening and drum strength testing. A vibrating screen is adopted for size fraction screening, the weight of each size fraction is accurately weighed, the screening index is determined, samples of 40-25 mm, 25-16 mm and 16-10 mm in size fraction are prepared according to the preset proportion, the weight of each size fraction is accurately controlled through a static weighing method, the weight deviation of the previous size fraction is compensated in an accumulated mode, the matching accuracy is ensured, personal errors are effectively reduced, and the screening efficiency is improved. The reliability of a test result is improved; the chemical component inspection comprises the step of determining the contents of various elements in the sintered ore through cleaning, crushing, division, sample grinding and chemical component analysis. The problem that blast furnace ironmaking is affected by large deviation of inspection results due to different operation methods of personnel can be solved.

The invention belongs to the field of new materials, and particularly relates to a super-hydrophobic composite coating with mechanical firmness, self-cleaning property and high wear resistance, a method and application thereof. According to the preparation method, epoxy resin (E51) is adopted as a binder, quartz sand, modified F-TiO nano particles and SiO nano particles are combined, and the quartz sand / F-TiO / SiO coated EP super-hydrophobic composite coating of a double-layer structure is prepared through a simple and convenient blade coating-spraying process. According to the coating, through multi-scale hierarchical structure design and low surface energy modification, a static water contact angle of 151 degrees and 1t are achieved; the rolling angle of 5 degrees shows excellent self-cleaning performance on liquid and solid pollutants. A mechanical stability test shows that in a Taber abrasion test, the coating still keeps good hydrophobicity after being abraded for 3000 cycles under the load of 250 g and abraded for 600 cycles under the load of 750 g; after 500 times of adhesive tape stripping experiments, the static water contact angle is still greater than 120 degrees, the rolling angle is as low as 5 degrees, and excellent wear resistance and substrate adhesion are shown.

The device comprises a polishing module, a polishing displacement module, a polishing base table and a control system, a polishing head of the polishing module is designed to be in a tooth shape meshed with a polished gear, the polishing displacement module drives the polished gear to accurately reach a polishing station, and the polishing base table is arranged on the polishing base table. An air cylinder of the polishing module drives a polishing head to move, make meshed contact with a polished gear and apply polishing pressure, a main shaft motor of the polishing module drives the polished gear to rotate and drives the polishing head to rotate through the meshing effect, meanwhile, a polishing displacement module drives the polishing head to reciprocate along the Z axis, and therefore synchronous and uniform contact of multiple tooth surfaces is achieved. According to the invention, the gear working surface is polished with high quality and high efficiency in cooperation with the polishing solution with oxidation and complexing synergistic effect, and compared with the prior art, the polishing quality is high by utilizing chemical and mechanical synergistic effect; the polishing head is large in contact area and high in polishing efficiency; the polishing head is small in abrasion and high in polishing stability.

The utility model belongs to the technical field of mechanical disassembling and assembling tools, and particularly relates to a high-plasticity equal-displacement economizer anti-abrasion optimizing device which comprises a reinforcing structure, fixing structures are integrally formed on the left side and the right side of the reinforcing structure, and the reinforcing structure and the fixing structures are made of twelve-chromium-one-molybdenum-vanadium steel. The reinforcing structure comprises a first sleeve and a second sleeve; the fixing structure comprises two connecting retaining rings, and a plurality of comb tooth grooves distributed left and right at equal intervals are formed in the inner surfaces of the two connecting retaining rings. The reinforcing structure is arranged in the device and composed of the two sleeves, when the pipe wall of the economizer smoke exhaust pipe becomes thin due to impact of smoke particles, the reinforcing structure of the corresponding model can be selected to wrap the weak position of the pipe wall, and fixing is conducted through the fixing structures on the two sides of the reinforcing structure; the strength of the smoke exhaust pipeline of the economizer can be enhanced, and the abrasion resistance of the position of the smoke exhaust pipeline can be improved.

A fan impeller made of complex three dimensional composite structures which results in the combination of mechanical properties and abrasion and erosion resistance which allows for improved utility, functionality, reliability, cost, and safety for the user. The specific composite structures vary based on fan size and design as well as the gas and application requirements relative to such as but not limited to temperature, corrosivity, abrasiveness, etc., and may include but are not limited to combinations of fibers, resins, 3D printed reinforcement structures, cast reinforcement structures, and / or fabricated reinforcement structures.

The application relates to the technical field of transformers, in particular to a transformer structure capable of reducing mechanical abrasion, which comprises a transformer box body, a box cover, bolts, nuts, a first through hole arranged on the box body, a second through hole arranged on the box cover, a support frame fixedly connected to the box cover at the bolt mounting position, a support plate rotatably connected to the support frame, a first mounting hole arranged on the support frame, a second mounting hole arranged on the support plate, a sealing arrangement at the contact surface of the support frame and the support plate, a threaded rod on the bolt sequentially penetrating through the second mounting hole, the first mounting hole, the second through hole and the first through hole and being threadedly connected with the nut, a clamping sleeve arranged at the first through hole of the box body and used for limiting the rotation of the nut, a clamping plate detachably connected between the support plate and the head of the bolt and forming a structure capable of synchronously rotating the support plate and the bolt, and a limiting mechanism arranged between the support frame and the support plate and used for limiting the one-way rotation of the support plate. The application reduces the fretting abrasion generated at the bolt connection position and enables stable connection of the bolt connection position.

This utility model discloses a wood product paint surface abrasion resistance testing device, including a base box and a connecting seat set on the top of the base box; a clamping assembly including a placement platform slidably connected to the surface of the connecting seat, a support plate lifted and connected to one side of the end of the placement platform, a fixing plate fixed to one side of the support plate, a bottom plate fixed to one end of the placement platform and located directly below the fixing plate, a lead screw fixed to the surface of the bottom plate and slidingly passing through the fixing plate, and two screw sleeves threaded to the surface of the lead screw and distributed on the upper and lower sides of the fixing plate; through the designed side rail, fixing plate, bottom plate, lead screw and screw sleeves, the height of the support plate and clamping plate can be adjusted, so that the support plate and clamping plate can always be slightly lower than the wood product, and the friction head is less likely to mechanically interfere with the clamping assembly during the friction with the wood product, thus facilitating the normal use of the testing device.

The invention relates to the technical field of anti-abrasion treatment, and particularly discloses an anti-abrasion treatment method for a CEMS sampling probe. The method comprises the following steps: accurately measuring geometric parameters and an erosive wear area of the probe rod; cleaning the to-be-protected surface of the probe rod; customizing an aluminum oxide outer sleeve; the sleeve is arranged outside the probe rod in a sleeving mode; the annular gap is filled with pre-compressed graphite rope filler, and tight filling is formed through mechanical dense adjustment; carrying out fixed inspection; high-temperature-resistant sealant is smeared at the two ends of the sleeve; and finally curing and mounting. The composition comprises an aluminum oxide outer sleeve, a graphite rope filler and a high-temperature-resistant sealant. According to the method, through the composite protection structure, the scouring resistance of the CEMS sampling probe in the high-temperature and high-dust flue gas environment is remarkably improved, and the method has the advantages that the operation process is clear, and construction is convenient and fast; the prepared wear-resistant structure can effectively prolong the service life of the probe rod by 4-5 times, greatly improve the operation stability of equipment and reduce the maintenance cost.

The utility model discloses a low-abrasion numerical control roll grinder electromagnetic clamping device, and particularly relates to the technical field of numerical control roll grinders, the low-abrasion numerical control roll grinder electromagnetic clamping device comprises a shell and an electromagnetic clamping assembly, the electromagnetic clamping assembly is installed on the shell, and the electromagnetic clamping assembly comprises an electromagnetic machine, a first connecting plate, a second connecting plate, a first electromagnetic chuck and a second electromagnetic chuck; the electromagnetic machine is fixedly installed on one side of the interior of the shell, the output end of the electromagnetic machine is fixedly sleeved with the first connecting plate, and the first connecting plate and the second connecting plate are fixed through bolts. The roller is placed on one side of the first electromagnetic chuck, the electromagnetic machine works to generate a magnetic field, magnetic lines penetrate through the first electromagnetic chuck and the roller to form a closed loop, the roller is firmly attracted to the surface of the first electromagnetic chuck, pure magnetic attraction exists between the roller and the surface of the first electromagnetic chuck, and sliding or friction of a mechanical clamping part is avoided; and operation is easy, and low-abrasion clamping can be conveniently conducted on the roller.

The utility model discloses a kind of erosion-resistant, abrasion-resistant mechanical sealing structure, relate to mechanical sealing technical field, including main shaft and fixed sleeve set on the shaft sleeve of main shaft, the shaft sleeve is fixedly installed with outer end cap, annular base is installed in outer end cap inside, annular base inside is installed with mounting seat, mounting seat inside is installed with wear-resistant sealing seat;The annular base inside is also installed with the stationary ring that can be displaced along the main shaft axis direction, stationary ring is sealed with mounting seat cooperation, and the inner end of shaft sleeve is installed with the rotating ring that is sealed with stationary ring rotation cooperation, shaft sleeve, rotating ring, stationary ring, wear-resistant sealing seat, mounting seat, annular base and outer end cap are cooperated to form cooling cavity.The utility model can effectively play erosion-resistant, abrasion-resistant, so that mechanical sealing structure can be more stably normal work, prolong the service life of mechanical sealing structure.

The utility model discloses a cleaning device for mechanical castings, which relates to the technical field of cleaning equipment, and comprises a box body and a box door rotatably connected to the front side of the box body, five fixing mechanisms distributed at equal intervals are arranged in the box body, and the five fixing mechanisms are positioned on the same vertical plane. The five fixing mechanisms are provided with the same turnover mechanism on the two sides in the width direction of the box body respectively, the turnover mechanisms are installed on the inner side wall of the box body, and each fixing mechanism comprises an n-shaped fixing frame. According to the mechanical casting cleaning device, mechanical castings to be cleaned are separated through the fixing mechanism, the problems of collision, friction and the like existing between the castings in the cleaning process are reduced, the probability that the castings are damaged in the cleaning process is reduced, scratching and abrasion of the castings to the interior of equipment are reduced, and the maintenance frequency of the equipment is reduced; the fixing assembly can adapt to parts of castings with different sizes, different types of castings can be placed on each layer, and classification and taking are convenient.

The utility model relates to the technical field of doorsill beams, in particular to an automobile light-weight doorsill stiffening beam which comprises an outer plate, an inner plate is welded to one end of the outer plate, second partition plates are fixedly connected to the outer sides of one ends of the outer plate and the inner plate, and a first partition plate is fixedly connected to one end of each second partition plate. One ends of the first partition plates on the left side and the right side are fixedly connected with one side of the outer wall of the outer plate and one side of the outer wall of the inner plate correspondingly, sandwich foam is fixedly connected to one end of the outer plate and one end of the inner plate, and a reinforcing structure is arranged on one side of the outer plate. Through cooperation of the outer plate, the inner plate and the reinforcing structure, when the device is used, the first anti-corrosion and anti-abrasion layer and the second anti-corrosion and anti-abrasion layer are made of polyurethane coating, the polyurethane coating has good flexibility, high binding power, abrasion resistance, excellent mechanical performance and good anti-corrosion performance, and the abrasion resistance and corrosion resistance of the threshold beam can be conveniently improved; the doorsill beam is prevented from being abraded or corroded, and the strength is conveniently guaranteed.

The invention relates to the technical field of mineral processing and mineral preparation equipment optimization, and discloses a Markov chain-based ball mill ball supplement parameter determination method, which comprises the following steps: determining the rock abrasion degree: acquiring the abrasion degree parameter of to-be-ground ore, the parameter being used for representing the abrasion capability of the ore to a steel ball, and determining the abrasion degree of the to-be-ground ore to a steel ball; a basic basis is provided for subsequent steel ball abrasion rule analysis; and performing numerical simulation on a steel ball abrasion evolution rule: combining physical and mechanical parameters of the ore and the steel ball based on the ore abrasion degree parameter obtained in the step a. The method comprises the following steps: establishing association between ore characteristics and steel ball abrasion through a rock abrasion degree test, constructing a steel ball abrasion evolution model by using a discrete element method, converting the size fraction of a steel ball into a Markov chain state, calculating a transition probability matrix in a ball supplementing period, and finally determining ball supplementing parameters by combining ideal and actual ball load gradation difference and a ball supplementing principle. The steel ball abrasion transfer trend can be dynamically predicted, and the over-compensation or under-compensation phenomenon is avoided.

The utility model provides wear resistance detection equipment for a massager. The wear resistance detection equipment comprises a workbench, a rotary table and a detection assembly, the rotary table comprises a carrying disc, a follow-up shaft and a jacking manipulator, a through hole is formed in the carrying disc, a jig is arranged in the through hole, a profiling hole is formed in the jig, and a butt joint groove is formed in the follow-up shaft; the detection assembly comprises a pneumatic sliding table, a motor, a main shaft, a connecting shell, a detection cover, a reset spring and a self-locking rod, and the main shaft is provided with a plugging hole and an accommodating groove which are communicated with each other; a grinding disc is arranged in the detection cover, and a conical hole is formed in the grinding disc. After the detection cover descends, the main shaft is in butt joint with the follow-up shaft, the carrying disc can be driven to rotate, to-be-detected massagers on the carrying disc make contact with conical holes of the grinding disc, the grinding disc rubs the massagers when the carrying disc rotates, whether the abrasion resistance of the massagers reaches the standard or not is judged according to the abrasion condition, a plurality of massagers can be clamped in the carrying disc, and the jig is lifted through the jacking mechanical arm. And the fixed height of the massager is adjusted to adapt to the detection requirements of massagers with different sizes.

The invention relates to the technical field of blade repairing treatment, discloses a cold spraying repairing method for an aluminum alloy blade and aims to solve the problems that a base body is prone to being damaged and the performance of a repairing layer is poor in an existing repairing method. The method comprises the steps of mechanical polishing, cold spraying, mechanical coping and follow-up protection, specifically, surface inspection, pretreatment, spraying operation and multi-dimensional inspection are sequentially conducted on cold spraying, 501.1-mark pure aluminum-Al2O3 mixed powder is adopted, after positioning and precise parameter spraying are conducted through a special tool, coping is conducted till the molded surface requirement is met, and then micro-arc oxidation and paint spraying protection are conducted. The method is low in cold spraying temperature, free of damage to a base body, excellent in repairing layer performance, high in precision, high in corrosion resistance and abrasion resistance and stable and reliable in process, the operation and maintenance cost can be remarkably reduced, and the service life of the paddle is prolonged.

The utility model provides a high and low temperature alternating environment wear simulation experiment machine which comprises a rack, and a heating mechanism, a wear mechanism, a blowing cooling mechanism and a clamping mechanism which are arranged on the rack, and the heating mechanism comprises an electromagnetic induction heater arranged on the rack; the abrasion mechanism comprises a grinding machine installed on the machine frame and a first driving mechanism connected with the grinding machine to drive the grinding machine to move up and down, the clamping mechanism comprises a clamp installed on the machine frame and a second driving mechanism driving the clamp to move, and the blowing cooling mechanism is installed on the machine frame and used for conducting blowing cooling on grid sections on the clamp. The high and low temperature alternating environment abrasion simulation experiment machine can consider factors such as reciprocating heating and cooling, temperature monitoring, contact load, mechanical abrasion and cyclic experiments, and can reduce actual working conditions of abrasion of quick-wear parts in metallurgical processes such as sintering and pelletizing in a high-precision manner, so that the influence effect of a coating technology on the service life of a grid section is verified.

The utility model provides a novel wear-resistant pin shaft, and belongs to the technical field of mechanical parts. The problems that a traditional pin shaft is prone to abrasion in the long-term use process, an effective lubricating structure is lacked, and the service life of equipment is shortened are solved. The novel wear-resistant pin shaft comprises a pin shaft body, a locking assembly which is arranged on one side of the pin shaft body and used for fixing, a mounting block is arranged at the other end of the pin shaft body, a wear-resistant sleeve used for protecting the pin shaft body is arranged on the pin shaft body in a sleeving mode, and a supporting assembly used for supporting the wear-resistant sleeve is arranged on the pin shaft body. The utility model has the advantage that the wear resistance and the lubricity are improved.

The present invention pertains to the field of mechanical engineering, and more precisely, to the area of mechanical couplings. More specifically, the present invention discloses claw couplings with elastic elements, for joining shafts of rotating machines. The present invention provides: lower mass or weight in relation to the prior art couplings intended for the same transmitted power ranges; higher torque / weight ratio; smaller claws, with improved load distribution and without thereby compromising the capacity for transmitted torque and power; lower moment of inertia; superior capacity to withstand contact pressure; greater heat transfer capacity; greater durability in operation at high temperatures; greater resistance to wear and / or abrasion; and / or efficient operation even when there is substantial radial and / or axial misalignment in operation.