223 results about "Dry friction" patented technology

The invention discloses a use monitoring method and system for a knife gate valve, and relates to the technical field of knife gate valve monitoring, and the method comprises the steps: integrating a multi-mode sensor array at the root of a valve rod of the knife gate valve, an adjacent region of a sealing surface and in a valve cavity flow channel, and collecting multi-source signals in real time; performing dynamic fusion processing on the multi-source signal, and determining a feature extraction algorithm combination based on the current valve rod temperature and historical working condition data to extract a sealing surface damage feature, a transmission chain wear feature and a particle impact feature; constructing a dynamic anomaly judgment model, updating a clustering boundary of a vibration and torque characteristic space in real time, and performing decoupling diagnosis on a sealing surface dry friction risk, thread clearance expansion and gear wear in combination with time-frequency domain fluctuation analysis of a gear meshing frequency harmonic attenuation rate and an angular acceleration; and generating a three-level maintenance strategy according to the diagnosis result, dynamically adjusting the output torque of the execution mechanism and optimizing the switching frequency of the valve.

The invention relates to the technical field of aero-engines, and discloses a dry friction damper multi-target robust optimization method considering multi-source uncertainty, and the method specifically comprises the following steps: 1, quantifying the uncertainty parameters of a dry friction damper; step 2, performing hyper-Latin cube (LHS) sampling on value ranges of geometric parameters and contact parameters caused by abrasion to obtain parameter combination sampling capable of expressing global characteristics in a global sample space; 3, calculating a corresponding nonlinear dynamic response by using a multi-dimensional harmonic balance method (MHBM) by using the nonlinear parameters obtained by sampling; by means of the mode of synchronously optimizing key design parameters of the friction-damping system, the optimal robustness design of the friction-damping system is allowed to be carried out under parameter uncertainty with the purpose of vibration reduction, the damping effect of the dry friction damper is improved, the Pareto optimal solution of the neural network is solved through the genetic algorithm, and the optimal stability of the friction-damping system is improved. Therefore, the multi-objective optimization is realized and the calculation efficiency is improved.

The invention belongs to the technical field of plunger sealing of high-pressure plunger pumps, and particularly relates to a high-pressure plunger pump plunger assembly self-compensation type abrasion-resistant sealing structure which comprises a high-pressure plunger pump body and an oil suction and outlet tank, the right end of the high-pressure plunger pump body is connected with the oil suction and outlet tank, and a fixing assembly is detachably installed at the right end of the interior of the high-pressure plunger pump body. And the right end of the fixing assembly communicates with the left end of the inner wall of the oil suction and outlet tank, a first sealing structure is detachably installed at the right end of the interior of the fixing assembly, and the high-pressure plunger pump main body is used for driving the first sealing structure to conduct fine opening and closing operation. The friction coefficient of the sealing structure is reduced, and the friction heat conductivity coefficient of the plunger assembly is reduced, so that the wear resistance of the sealing structure is improved, material aging caused by temperature rise is prevented, multiple times of self-compensation can be conducted on a wear gap, and then the durability of the sealing structure is greatly improved.

The invention discloses a polymorphic graphite-carbide steel-based multiphase wear-resistant composite material and a preparation method and application thereof.The material is of a composite tissue structure of spheroidal graphite, three-dimensional coralline graphite, multiple carbides and a steel matrix, and the multiple carbides are M3C type carbides and MC type carbides. Comprising the core steps of component design, composite inoculant proportion design, smelting and inoculation treatment, subsequent heat treatment and the like, and is characterized in that synergistic precipitation of spheroidal graphite, three-dimensional coralline graphite and various and multi-size carbides is achieved through chemical component design and inoculation regulation and control; the invention further provides application of the material in high-impact, heavy-load or dry-friction working conditions of crushing or grinding equipment. The material provided by the invention has better comprehensive wear resistance under complex working conditions, has structural stability, impact resistance, lubricity and thermal stability, and has wide engineering application prospects in severe environments such as high impact, high load, dry friction and the like.

The utility model relates to the technical field of track lubrication, and discloses a lubricating track assembly which comprises a supporting piece, a driven wheel rotationally installed on one side of the supporting piece through a rotating shaft, a driving wheel rotationally installed on the other side of the supporting piece through a bearing, and a tooth block fixed to the surface of the driving wheel. By arranging a hollow oil guide plate, a wear-resistant contact piece and a second through hole, lubricating oil can be smeared on the surface of a tooth block of the driving wheel through the second through hole when the driving wheel rotates and drives the tooth block to rotate to pass through one side of the hollow oil guide plate; when the tooth block passes through one side of the wear-resistant contact piece, lubricating oil smeared on the surface of the tooth block is uniformly smeared on the surface of the crawler belt through the wear-resistant contact piece, and redundant lubricating oil is scraped off and is reserved on the surface of the second through hole, so that the surface of the driving wheel tooth block is lubricated; the problem that due to dry friction, the tooth blocks of the driving wheel can be greatly abraded after being used for a long time, and the tooth blocks are damaged is solved, the service life of the tooth blocks is relatively long, and the use cost is relatively reduced.

The invention relates to the technical field of hydraulic element testing, in particular to a high-pressure axial plunger pump bearing bush pair interface friction and oil film characteristic testing device. According to the device, 10-60 MPa adjustable oil pressure is provided through the hydraulic pipeline unit, the driving unit achieves power loading and friction monitoring through a servo motor and a torque sensor, the main body unit conveys high-pressure oil to a bearing bush contact face through an in-shaft cross-shaped oil duct structure to form a static pressure supporting oil film, and a micron-sized oil film sensor is integrated; the oil detection unit monitors oil parameters, and the signal acquisition and control unit performs closed-loop regulation on oil supply flow, motor rotating speed and swash plate load based on oil film thickness, torque and pressure signals. The method has the beneficial effects that 0.2 mu m-level oil film fracture identification is realized, the occurrence rate of dry friction is reduced by 82% through a cross-shaped oil duct in the shaft, and the oil film fluctuation rate lt is cooperatively controlled through multiple parameters; + / -3%, the safety interlocking mechanism responds abnormally within 0.3 s.

The invention relates to Ni3Al-based alloy powder for laser cladding of a copper alloy surface, a cladding layer and a preparation method of the Ni3Al-based alloy powder, belongs to the technical field of laser processing materials, and is used for solving at least one of the problems of poor abradability, low hardness, low interfacial shear strength and the like of an existing copper alloy cladding layer. The Ni3Al-based alloy powder comprises the following chemical components in percentage by mass: 6.6%-7.1% of Al, 3.0%-3.5% of C, 34.5%-37.5% of Cr, 0.041%-0.06% of B, less than or equal to 200ppm of O, less than or equal to 30ppm of N, less than or equal to 5ppm of H and the balance of Ni. By adopting the Cr7C3 reinforced Ni3Al-based alloy powder provided by the invention, a cladding layer which is compact in organization structure, high in bonding strength with a matrix and excellent in wear resistance can be directly prepared on the copper surface. Specifically, the average hardness of a cladding layer on the surface of the copper alloy is larger than or equal to 490 HV, the shear strength of an interface is larger than or equal to 350 MPa, and under the dry friction condition (point friction and opposite grinding materials are Si3N4), the room-temperature wear rate is smaller than or equal to 1.85 * 10 <-5 > mm < 3 > / (N.m), and the wear rate at the temperature of 300 DEG C is smaller than or equal to 2.00 * 10 <-5 > mm < 3 > / (N.m).

The invention belongs to the technical field of wind power generation equipment, and discloses a sliding bearing, a wind power main gear box and a wind turbine generator. The sliding bearing includes a sliding layer. The sliding layer is deposited on the surface of the first member. When the first component and the second component rotate relatively, a lubricating oil layer is formed between the sliding layer and the second component, and the lubricating oil layer serves as a lubricating film with certain bearing capacity and can separate the sliding layer from the solid surface of the second component, so that dry friction is converted into liquid friction among molecules in the lubricating oil layer; the friction coefficient between the sliding layer and the second component is remarkably reduced, and therefore abrasion between the sliding layer and the second component is reduced. The sliding bearing has the advantages of being small in size, light in weight and good in economical efficiency. The sliding layer is made of the wear-resistant material and is deposited on the first component, so that the sliding layer forms a high-hardness and wear-resistant coating on the surface of the first component, and the service life of the sliding bearing can be prolonged.

The invention provides a new energy heavy truck battery replacement collet locking structure, and belongs to the technical field of vehicle equipment, the new energy heavy truck battery replacement collet locking structure comprises a base, the base is fixedly connected with a plurality of shell assemblies, the shell assemblies are connected with driving assemblies, the new energy heavy truck battery replacement collet locking structure further comprises a locking assembly, and the locking assembly is used for fixing a battery box; the guide assembly is used for ensuring the movement stability of the locking assembly; the guide assembly has the beneficial effects that a double-positioning mechanism is formed through sliding fit of the sliding groove hole and the guide seat and embedded limiting of the guide plate and the guide groove, it is ensured that the telescopic track of the locking pin is accurate, deviation caused by vibration is avoided, and deformation of the locking component is prevented; the piston push plate is driven by means of movement of the locking assembly, so that lubricating grease is automatically released, full-range coverage is achieved through the flow guide groove and the containing groove, part loss caused by dry friction is reduced, and the service life is prolonged.

The invention discloses a novel nonlinear rubber steel wire rope composite vibration isolator, and relates to the field of vibration isolators, the novel nonlinear rubber steel wire rope composite vibration isolator comprises a lower clamping plate, an upper clamping plate, rubber and two groups of first steel wire ropes, and the tops and the bottoms of the two groups of first steel wire ropes are symmetrically mounted on the two sides of the upper clamping plate and the lower clamping plate; a gap is reserved between the rubber and the upper clamping plate. According to the novel non-linear rubber steel wire rope composite vibration isolator, when the amplitude of a crystal oscillator is small, vibration energy can be absorbed and dissipated through dry friction damping between the first steel wire ropes, the lower clamping plate, the first steel wire ropes, rubber and the upper clamping plate can generate large dynamic displacement, strong impact can be attenuated, and the vibration isolation effect is good. Meanwhile, a large amount of low-frequency and high-frequency vibration is absorbed and dissipated, and due to the fact that a steel wire rope vibration isolator is small in friction damping and poor in vibration isolation effect during resonance, under the large-amplitude condition, the overall elastic support can be enhanced through the arranged rubber.

The invention provides a vision-variable binocular eyeball mechanism, and relates to the field of robot mechanisms, the vision-variable binocular eyeball mechanism comprises a base and an eyeball mounting seat arranged on the base; two eyeball body modules are movably arranged on the eyeball mounting seat, each eyeball body module comprises an industrial camera, a main movement track and an auxiliary movement track, the main movement track and the auxiliary movement track are arranged on the eyeball body module, and the main movement track and the auxiliary movement track are arranged in a space orthogonal mode; each eyeball body module is correspondingly provided with a driving module; the driving module drives the first driving sliding block and the second driving sliding block to move, so that independent rotation of the eyeball body module in the pitching direction and the yawing direction is achieved. The robot has the beneficial effects that the steering engines are intensively fixed to the base, and a second-stage movable platform is not needed; the bushing is used as a sliding bearing set for dry friction to replace a rolling bearing, so that the structure is simplified; the modular design is adopted, parts are convenient to produce, and assembling is facilitated.

The invention relates to a mechanical sealing structure for a high-pressure pump, which is applied to the field of mechanical sealing for pumps and comprises a pump shell, a push spring is mounted in the pump shell, a push ring is connected to the tail end of the push spring, a movable ring is connected to the surface of the push ring, a static ring is mounted in the pump shell, and a plurality of strip-shaped grooves are formed in the surface of the movable ring. An adjusting assembly is mounted in the strip-shaped groove and comprises a telescopic cylinder, a movable part is slidably connected to the inner bottom wall of the telescopic cylinder, a wedge-shaped block is fixed to the inner wall of one end of the strip-shaped groove, an adjusting groove is formed in the surface of the movable part, a sliding block is slidably connected to the interior of the adjusting groove, and a power assembly is mounted on the side, close to the top end, of the movable part; the problem of dry friction of a traditional mechanical seal in the low-speed starting stage is effectively solved through a dynamic adjusting mechanism composed of the adjusting assembly and the power assembly, the balancing weight can be separated from the wedge-shaped block through the first micro electric push rod, and therefore the leakage situation caused by the too thick liquid film is reduced.

The utility model relates to the technical field of scraper conveyors, and discloses a wear-resistant scraper conveyor middle trough which comprises two side plates, a middle plate is fixedly connected between the middle ends of the two side plates, and a sound insulation plate is fixedly embedded in the middle plate. According to the wear-resistant scraper conveyor middle trough, the rolling columns are arranged on the bottom plate, so that a chain can be supported when the chain returns, the direct friction pressure between the chain and the bottom plate is effectively reduced, the overall wear resistance is greatly improved, and the service life of equipment is remarkably prolonged; the lubricating system conveys lubricating liquid in a water tank into a spray pipe through a pump body, and then the lubricating liquid is sprayed to the surface of the middle plate by a nozzle at a downward inclined angle. By means of the design, it is ensured that the middle plate can continuously obtain a proper amount of stable lubricating liquid in the working process, dry friction and additional abrasion caused by insufficient lubrication are effectively avoided, and meanwhile high-temperature coal gangue or coal briquettes can be cooled.

The invention discloses a wet clutch sliding friction state prediction method based on friction pair fluid-solid heat behavior calculation and a vehicle, and the method comprises the steps: carrying out the iterative calculation of the internal fluid-solid pressure, oil film thickness and rough contact area of a friction pair based on the structure and working condition parameters of a wet clutch through a fluid-solid bearing equation, and representing the fluid-solid coupling behavior of a friction gap; a heat-source-input-free heat balance equation and a contact temperature continuity equation are established in combination with physical property parameters, the sliding friction interface heat flow dynamic distribution proportion is calculated at the same time, and a wet clutch temperature field prediction model is established by superposing heat conduction characteristics; through a non-dominated sorting genetic algorithm, clutch dry friction test data and a rough torque model considering radial temperature difference are fused, a rough friction coefficient-temperature fitting equation is solved, and a temperature field prediction model is combined to achieve updating of rough friction coefficients under different thermal load characteristics; and rough torque and viscous torque are respectively solved by integrating fluid-solid heat behaviors of the wet clutch, and the rough torque and the viscous torque and the temperature field jointly represent the sliding friction state of the wet clutch.

The invention discloses a martensite reinforced self-lubricating copper-based alloy coating and a laser cladding preparation method thereof, the martensite reinforced self-lubricating copper-based alloy coating comprises the following components in percentage by mass: 66 to 84 weight percent of Cu, 10 to 20 weight percent of Al, 3 to 10 weight percent of Ni, 3 to 10 weight percent of Mn, 0 to 2 weight percent of Sn and 0 to 2 weight percent of Pb. In the preparation process, the laser input energy density is controlled within the range of 8.96-13.27 J / mm, and the double strengthening effects of grain refinement and martensite content increase can be synchronously achieved. The main phase structure of the obtained coating is twin-crystal martensite, meanwhile, the coating contains a small amount of alpha-Cu lubricating phase, gamma phase and Fe-rich hard phase, and the dry friction coefficient of the coating is 1t; 0.35, and the solidification hardness gt; and the voltage is 350HV. Compared with the existing self-lubricating tin-based babbitt metal and copper-tin alloy with similar friction coefficients, the coating disclosed by the invention realizes synergistic improvement of high hardness and low friction performance, and is particularly suitable for dynamic friction and wear working conditions with higher impact resistance requirements, such as robot motion joints, precision mechanical transmission parts and the like.

To provide a dry friction material which can be produced more easily than conventional ones, a production method for the dry friction material, a composition for a dry friction material, and a method for producing the composition.SOLUTION: A dry friction material 1 includes a matrix material 11 and a dispersed material 12, the matrix material 11 including a vulcanized rubber, the dispersed material 12 including heat-resistant reinforcing fibers 121 and a friction regulation material, and the heat-resistant reinforcing fibers 121 being oriented in a certain direction. This composition for a dry friction material is formed by extruding a kneaded mixture of an unvulcanized rubber, heat-resistant reinforcing fibers, and a friction regulation material. A production method for this composition for a dry friction material includes an extrusion step of extruding a kneaded mixture of an unvulcanized rubber, heat-resistant reinforcing fibers, and a friction regulation material.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of rail vehicle engineering, and discloses a simulation calculation method for accurately calculating train dynamic curve passing, which comprises the following steps of: establishing a longitudinal-transverse-vertical interaction heavy haul train-rail three-dimensional coupling dynamics refined model; nonlinear links (such as axle box suspension nonlinearity, center plate contact nonlinearity, wedge friction nonlinearity, coupler gap impact effect and dry friction nonlinearity, buffer nonlinear hysteresis impedance and the like) of locomotive suspension and the multi-parameter continuous change characteristic of a curve track are fully considered. If the coupler is used as an independent rigid part for modeling, analyzing the actual coupling and vibration characteristics of the coupler; in combination with the gas flow theory, an air braking model is further improved, and the influence of a train marshalling form on braking wave distribution and braking wave transmission, the influence of distribution of braking force and brake shoe pressure in the braking process on the vehicle wheel-rail power effect and the like can be considered.

The invention relates to a glass insulator with a protection function, and belongs to the technical field of insulators, conditional starting of a cleaning assembly is realized through a wind power triggering assembly, an elastic reset part controls engagement or disengagement of a pawl part and a ratchet wheel under the action of wind power, and when the wind power is small, the elastic reset part cannot generate enough displacement, so that the cleaning assembly is cleaned. The pawl part is separated from the ratchet wheel, and the ratchet wheel idles and the cleaning assembly is kept static, so that the surface abrasion of the insulator body caused by continuous dry friction in small wind is avoided; when wind power is large, the elastic reset part moves to enable the pawl part to be meshed with the ratchet wheel, the ratchet wheel drives the annular rotating part to rotate in one direction, the cleaning assembly is driven to conduct cleaning, and the problem that in the stable strong wind and fixed wind direction environment, the cleaning efficiency is low due to wind power changes in a wind-driven self-cleaning scheme is solved; and the problems of insulator abrasion and mechanical fatigue are also caused.

The bearing closing-in device comprises a closing-in device body, oil injection tanks are fixedly installed on the two sides of the top of the closing-in device body, push rods are fixedly installed on the two sides of the top of an inner cavity of each oil injection tank, a supporting plate is fixedly installed at the output end of each push rod, and a pressurizing plate is fixedly installed at the bottom of each supporting plate through a support. An oil bag is fixedly installed at the bottom of an inner cavity of the oil injection box, and one side of the oil bag communicates with a spray head through a pipeline. According to the technical scheme, the problems that an existing bearing closing-in device does not have an automatic oil injection function, lubricating grease or lubricating oil needs to be regularly and manually supplemented, especially under the severe working conditions of high load, high temperature, high dust and the like, the oil injection period can be shortened to be once per day or per shift, manual operation consumes time and labor, the labor cost of enterprises is increased, and the working efficiency is high are solved. If oil is not injected in time due to negligence or scheduling problems, the temperature of the bearing closing-in device can be rapidly increased due to dry friction, and the problems of surface abrasion, gluing and even locking are caused.

The utility model discloses a road roller press roll device capable of reducing noise and improving efficiency, which comprises an outer cylinder part and an inner cylinder part, and the inner cylinder part is positioned at the central position of the outer cylinder part; end covers are arranged at the two ends of the outer cylinder part, center hole positions are formed in the end covers, an inner cavity of the outer cylinder part is sealed by the end covers, the inner cylinder part is arranged in the center hole positions in a matched mode, and liquid inlets are formed in the end covers. The hollow inner cavity of the compression roller device is filled with lubricating oil, so that the weight of the compression roller device is increased, the compression roller device can make a depressed sound in the rolling process, and noise generated in construction can be reduced; the lubricating oil can lubricate the bearing between the horizontal fulcrum shaft and the center hole position of the compression roller device while increasing the weight of the compression roller device, and the situation that normal work and rest, work and study of local residents are affected due to noise generated by dry friction between movably matched parts is avoided.

The utility model relates to die casting die technical field provides a kind of water leakage prevention structure and die casting die for die casting die, die casting die has mould frame, needle hole and water channel are provided in mould frame, water cooling pipe is installed in water channel, needle is slidably worn in needle hole, water leakage prevention structure includes: protective sleeve, it is inserted in needle hole and is sleeved in the outer periphery of needle, the guide hole that is penetrated is provided in protective sleeve, needle is slidably worn in guide hole;When needle moves relative to mould frame, needle slides along guide hole, and mechanical isolation layer is formed between needle and mould frame matrix. The design avoids the direct contact between needle and mould frame metal, significantly reduces dry friction, occlusion and risk of injury, effectively slows down the wear rate of inner wall of needle hole. Especially in the area where the distance between needle hole and water channel is small, this structure helps to maintain the stability of the structure wall thickness, delays the local weakness problem caused by long-term wear, thereby greatly reducing the risk of cooling water leakage.

The utility model relates to the technical field of injection molding machines, and particularly discloses a template hinged support for reducing oil leakage during injection molding of a PET foamed sheet, which comprises a bottom plate, a pin support, an oil storage assembly and a connecting pin, the bottom plate is detachably connected to the template; the pin support is fixedly connected to the side, away from the formwork, of the bottom plate, and a pin hole is formed in the pin support. The oil storage assembly is arranged in the pin hole and used for storing lubricating oil. The connecting pin rotatably penetrates through the pin hole, and the side wall of the connecting pin slidably abuts against the hole wall of the pin hole and the oil storage assembly. The mold plate hinge seat has the effects that the probability of dry grinding caused by oil leakage on the surface of the connecting pin in the mold plate hinge seat during injection molding is reduced, and the service life of the connecting pin is prolonged.

The application provides a low-friction high-wear-resistance resin-based composite material and a preparation method and application thereof, and belongs to the field of composite materials. The polytetrafluoroethylene nano powder modified by radiation is used together with inorganic filler particles such as graphite nano powder, molybdenum disulfide nano powder and the like to prepare a polyphenylene sulfide-based composite material at a certain compounding ratio. The composite material shows excellent tribological properties. On this basis, by adding a chopped carbon fiber and the like as a reinforcing filler, a high-strength, low-friction high-wear-resistance polyphenylene sulfide-based composite material is prepared by using a multi-scale functional filler network structure constructed inside the composite material. The technical process route of the application is simple, and the manufacturing cost is low. The application can be used for preparing friction protection parts, low-friction wear-resistant structures, wear-resistant bearings, self-lubricating parts, mechanical gaskets and the like under dry friction, and has a very broad application prospect in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment.

According to the ultra-high-purity stainless steel material for the semiconductor industry and the processing technology of the ultra-high-purity stainless steel material, the wear rate of the ultra-high-purity stainless steel material can be effectively reduced, so that the wear resistance of the ultra-high-purity stainless steel material is improved, impurities introduced by wear when the ultra-high-purity stainless steel material is used in the semiconductor industry are effectively reduced, and the application range of the ultra-high-purity stainless steel material is further widened; a gradient heterostructure is formed in the SLM sample through ultrasonic surface deep rolling treatment, martensite nanocrystals are formed on the surface, the hardness of the surface is further enhanced, dislocation movement is effectively inhibited through a high-density crystal boundary of the nanocrystal structure, and therefore the hardness of the sample is remarkably improved; the improvement of the surface hardness enhances the deformation resistance of the surface in the wear process, so that the wear resistance is improved, and the ultrasonic surface deep rolling treatment obviously improves the wear resistance of an SLM sample under the conditions of dry friction and emulsified lubricating fluid lubrication, so that the application range of the additive manufacturing 316L stainless steel is expanded.

This utility model relates to the field of flow rail technology and discloses a shaftless flow rail. The shaftless flow rail includes a frame, inside which rollers are arranged, and a central shaft is fixedly connected to the outer wall of each roller. A connecting assembly is also arranged inside the frame. In this shaftless flow rail, lubricating oil flows along the central shaft to the steel balls, and the lubricating oil is periodically released to avoid excessive waste, prevent dry friction, reduce wear, and reduce dry friction noise between the central shaft and the steel balls. This also reduces structural resonance caused by shaking and collision. The steel balls press against the central shaft, achieving automatic centering and limiting of the central shaft, reducing shaking caused by eccentric rotation, thereby reducing structural resonance and noise sources. The lubricating oil promotes the smooth sliding of the slider, reduces wear, avoids jamming or dry blockage, and suppresses the transmission path of structural noise between sliding components, making the overall system operation sound smoother and softer.

The invention relates to the technical field of oiling devices, in particular to an unpowered permanent magnet automatic oiling device which comprises an oil storage mechanism used for storing lubricating grease and an oil outlet mechanism. The oil storage mechanism comprises an oil storage barrel and a sealing partition plate fixedly arranged on the inner wall of the oil storage barrel, the bottom end of the oil storage barrel is of a funnel-shaped structure, an oil outlet pipe is arranged at the bottom end of the oil storage barrel, and an oil conveying hose is arranged at the bottom end of the oil outlet pipe; the oil outlet mechanism comprises a fixed magnetic ring fixedly arranged on the outer surface of the bottom end of the oil storage barrel and a movable magnetic ring arranged on the outer surface of the oil storage barrel in a sliding mode. By arranging the oil storage mechanism and the oil outlet mechanism, the device can utilize magnetic attraction to drive and control slow displacement of the strong magnetic piston, continuous and uniform injection of lubricating grease is achieved, excessive lubrication or dry friction is avoided, a power source or an air source is not needed, and the device is suitable for occasions where electricity is inconvenient or space is limited and is compact in structure, few in parts, convenient to install and maintain and low in cost. The method is suitable for batch deployment.

The present invention provides a cycloid wheel structure and a reducer including the same, which relates to the technical field of reducers and solves the technical problems of abnormal wear and high noise caused by the axial adhesion of two cycloid wheel bodies. The cycloid wheel structure includes a first cycloid wheel piece and a second cycloid wheel piece with two identical structures; the first cycloid wheel piece or the second cycloid wheel piece includes a cycloid wheel body and an anti-sticking component provided on the cycloid wheel body, and the distance between the two cycloid wheel pieces is maintained by the anti-sticking component; the anti-sticking component includes a magnetic part, and the magnetic part includes a magnetic ring and a fan-shaped magnetic block. The two cycloid wheel pieces of the present invention cannot be adhered together under the action of magnetic force, and the friction resistance during operation is eliminated. At the same time, the gap between the two cycloid wheel pieces is greatly increased, and lubrication is more sufficient, which effectively improves the problems of dry friction, noise and abnormal wear between the two cycloid wheel pieces.

The utility model discloses a copper bush structure used in a brush cutter gear box, which comprises a gear box assembly, a driving gear shaft and a driven gear shaft, the driving gear shaft is rotatably connected in the gear box assembly, a copper bush is arranged in the gear box assembly, the driven gear shaft is rotatably connected in the copper bush, and the driving gear shaft and the driven gear shaft are rotatably connected in the copper bush. Oil grooves are uniformly distributed in the inner diameter of the copper sleeve; the utility model has a simple structure, and solves the problem of dry friction heating under the condition of insufficient oil supply.

The utility model provides a half axle gear capable of being continuously lubricated, belongs to the field of automobile parts, and solves the problem that a part is rusted or is subjected to dry friction wear due to the fact that lubrication of the half axle gear is difficult to keep. The gear comprises a gear body and a rotating shaft, a connecting part and teeth are arranged on the gear body, an internal spline is arranged in the connecting part, a matched spline part is arranged on the rotating shaft, an installation hole is formed in the connecting part, an oil storage column is installed in the installation hole, the installation hole is connected with a first annular groove and a second annular groove, and a first oil outlet hole is connected to the first annular groove. An outlet of the first oil outlet is located between the teeth and connected with a second oil outlet through a second annular groove, an outlet of the second oil outlet is located between the inner splines, a sliding block is arranged in the oil storage column, and oil storage cotton is installed on the sliding block. The gear has the advantages that the oil storage column is arranged, centrifugal force generated when the gear body rotates is used for driving the sliding block to extrude the oil storage cotton, oil is promoted to flow out, the teeth, the internal spline and the spline part are lubricated, and rusting and dry friction abrasion caused by insufficient lubrication are prevented.

The invention discloses an abrasion test device for exploring a rubber material, and belongs to the technical field of rubber material abrasion detection, the abrasion test device comprises a detection table for a rubber sealing ring abrasion test, the detection table is provided with a contrast test mechanism for rubber sealing ring test simulation, and the contrast test mechanism is composed of an offset abrasion assembly and a sealing adjustment assembly. And an abrasion testing mechanism for detecting the abrasion loss of the rubber sealing ring is arranged on the detection table. By arranging the contrast test mechanism, single-factor simulation and double-factor coupling simulation can be formed, under the single-factor simulation, whether dry friction, oil lubrication friction and offset friction of the sealing ring can be tested in a contrast manner, and under the double-factor coupling, the friction of the sealing ring can be tested in a contrast manner. The complex and common actual working condition of oil lubrication and offset can be accurately simulated, the abrasion behavior under the combined action of lubricating oil and installation offset is studied, and the authenticity and comprehensiveness of the test are greatly improved.