55results about How to "Reduce lubrication" patented technology

The invention discloses a ton bag grabbing lifting hook, and relates to the technical field of ton bag grabbing, a main oil tank is fixedly mounted in a box body, an auxiliary oil tank is fixedly mounted at the top of the box body, an oiling device is fixedly mounted at the top of the main oil tank, and a clamping device is slidably mounted at the top of the main oil tank, the oiling device comprises a telescopic column, a pressure plate, a first rack, a telescopic oiling pipe, a fixing column, a first gear, a first clamping block and a baffle, lubricating oil is guided into an oil pipe through the main oil tank, the oil pipe sends the lubricating oil to a rotating shaft of the lifting hook, the lifting hook is lubricated by the lubricating oil, and the lifting hook can completely grab ton bags in the working process; the grabbing action can be smoothly completed, so that the situation that due to the fact that the lifting hook is not lubricated by lubricating oil for a long time, part of assemblies of the lifting hook are seriously abraded and lose original functions in daily work, the lifting hook fails to grab in daily work, and the grabbing process is slow and not smooth is avoided; the lifting hook can achieve the purpose of automatically hanging ton bag lifting lugs in an unmanned mode, time and labor are saved, and operation efficiency is improved.

The invention discloses an efficient aluminum plate cold-rolling mill oil injection mechanism, and relates to the technical field of aluminum plate cold-rolling mill oil injection, the efficient aluminum plate cold-rolling mill oil injection mechanism comprises a machining table, a transmission roller is fixedly mounted on the inner wall of the machining table, a motor is fixedly mounted on the outer wall of the machining table, and a pressing roller is fixedly mounted at the output end of the motor; the anti-deviation device is arranged on the inner wall of the machining table and comprises a lubricating box, a spraying opening, a supporting frame, a linear motor, a sliding plate, a sensor, a servo motor, a conveying wheel, a push plate, a guide plate, a fixing frame, a trapezoidal block and a deburring rod. The servo motor moves in the direction close to the middle of the conveying roller to drive the conveying wheel to move in the direction close to the middle of the conveying roller, the conveying wheel moves in the direction close to the middle of the conveying roller to be matched with the conveying belt to correct the aluminum plate, and the situation that the aluminum plate deviates during oil injection, consequently, lubricating oil cannot effectively cover the aluminum plate, and follow-up pressing roller rolling is affected is prevented.

The invention discloses a silicone oil-based magnetic liquid with low volatility and radiation resistance as well as a preparation method and application thereof, and relates to the technical field of nuclear reactors. The silicone oil-based magnetic liquid comprises nano magnetic particles, a modifier, a surfactant and a base carrier liquid, the nano magnetic particles are changed from water solubility to oil solubility under the action of the modifier, the surface of the nano magnetic particles modified by the modifier is coated with the surfactant, and the base carrier liquid comprises polymethylphenyl siloxane fluid. The silicone oil-based magnetic liquid prepared by the invention has the advantages of chemical inertness, thermal stability, oxidation resistance, low vapor pressure, low ignition point and the like of conventional silicone oil, also has better high temperature resistance, radiation resistance, lubricating property and dissolving property, has the working temperature of-50 DEG C to 250 DEG C, and is excellent low-volatility and radiation-resistant silicone oil-based magnetic liquid.

The utility model belongs to the technical field of online transmission of new energy automobile battery packs, and discloses a heavy-load friction power and free roller way suitable for battery pack assembly, which comprises a conveying unit with a roller way, the conveying unit is provided with an open slot, and a roller combination is mounted in the open slot; the power and free transmission shaft is sleeved with the power and free unit, and the power and free unit is meshed with the roller combination to control starting and stopping of the roller combination. By arranging the power and free unit, when the load torque is larger than the friction torque, the power and free unit enables the roller combination to stop moving, at the moment, the power and free function is achieved, friction between the roller combination and the friction face of the tray where the battery pack is placed is reduced, and therefore the service life of the conveying equipment is prolonged.

The invention discloses a high-precision brushless motor, and relates to the field of brushless motors, the high-precision brushless motor comprises a shell, a stator is fixed in the shell, a rotor is arranged in the stator, two ends of the rotor are rotatably connected with bearings, the shell is provided with an active lubrication noise reduction mechanism, the active lubrication noise reduction mechanism corresponds to the bearings, and the active lubrication noise reduction mechanism is connected with a motor. And an extrusion stabilizing mechanism is arranged on the bearing. The active lubrication noise reduction mechanism monitors noise generated by rotation of the two bearings, when the bearings lack lubrication and generate large noise, the active lubrication noise reduction mechanism injects lubricating oil to the bearings, the bearings are lubricated through the lubricating oil, and meanwhile the active lubrication noise reduction mechanism drives the extrusion stabilizing mechanism; the extrusion stabilizing mechanism limits injection of the active lubrication noise reduction mechanism, so that when the brushless motor works, generated noise can be reduced, the frequency of maintaining the brushless motor is reduced, and the service life of the brushless motor is prolonged.

The invention belongs to the technical field of hot forging dies, and particularly relates to an automatic lubricating and cleaning hot forging die device which comprises a rack, a die body, a lubricating liquid supply unit, a multidirectional adjusting unit and a discharging mechanism. The lubricating liquid supply unit comprises an oil tank, a conveying module and a nozzle; the nozzle is connected with the nozzle through the conveying module; the multidirectional adjusting unit comprises a connecting rod, a lifting unit and a moving unit, the connecting rod is slidably connected with the rack, the lifting unit is arranged between the connecting rod and the rack, the moving unit is arranged between the connecting rod and the spray head, and the lifting unit is used for achieving position adjustment of the spray head in the vertical direction; the moving unit is used for adjusting the position of the spray head in the horizontal direction; the discharging mechanism is arranged at the bottom of the mold body and used for discharging the lubricating liquid entering the mold body and impurities carried by the lubricating liquid. According to the device, the cleanliness of the die body is improved, so that the die body is lubricated more sufficiently and uniformly, and the production quality of forgings is ensured.

The invention discloses an assembly structure of a roller for a continuous casting machine, comprising two shaft seats, two bearings and a roller, wherein the bearing comprises an inner ring and an outer ring, the outer ring cooperates with the shaft seat mounting hole, a lubrication structure is provided on the top of the shaft seat, a first cooling structure is provided on the roller, and a second cooling structure is provided on the shaft seat. The invention pours lubricating oil into the oil tank, and the lubricating oil flows from the oil outlet pipe to the connection between the inner ring and the extension ring, and the lubricating oil is infiltrated into the bearing through the bearing rotation, thereby improving the lubrication effect. The invention has a good lubrication effect, can fully lubricate the bearing, make the roller not easy to get stuck, not easy to damage the surface of the casting, and can increase the installation firmness of the roller. At the same time, by providing the first cooling structure and the second cooling structure, the roller and the shaft seat are cooled and cooled respectively, the cooling effect is greatly improved, the roller is not easy to deform, the water after cooling is recycled, and water resources are saved.

The invention relates to the technical field of cutting fluid, in particular to cutting lubricating fluid as well as a preparation method and application thereof. The invention provides a special cutting lubricating liquid for finish machining of flutes on the inner wall of an aluminum alloy waveguide, the special cutting lubricating liquid comprises the following components in parts by weight: 89-91 parts of kerosene, 4-6 parts of No.40 engine oil, 0.8-1 part of rapeseed oil, 0.3-0.5 part of tung oil, 0.3-0.5 part of a flame retardant and 0.8-1 part of a penetrant, the composition comprises kerosene, engine oil, rapeseed oil and tung oil, and the flame retardant and the penetrant are supplemented. The lubricating fluid comprehensively solves the problems of built-up edges, oxidation corrosion and cutter wear in deep and narrow flute processing through complementation of advantages of all the components in permeation, lubrication, cooling and film-forming properties.

The utility model relates to the technical field of gear reduction, in particular to an efficient energy-saving gear reducer device which comprises a device shell, an input end is arranged on one side of the device shell, and an output end is arranged on the other side of the device shell. A moving assembly is arranged at the top end of the device shell. Fixing assemblies are arranged on the two sides of the device shell correspondingly. Through cooperative use of the circular cover, the fixed circular ring, the disc, the sliding block and the preformed hole, the purpose of adding lubricating oil without overall disassembly can be achieved, the time for shutdown and machine disassembly is shortened, the maintenance time and the labor cost are effectively saved, the operation safety is improved, and the working efficiency is improved. Meanwhile, the situation that dust enters lubricating oil and the interior of the device shell is reduced, oil pollution and deterioration can be prevented, the good performance and stability of the lubricating oil are kept, the equipment failure and maintenance requirements are reduced, and therefore the maintenance cost and the maintenance frequency are reduced.

The present invention discloses a fan blade rotor for efficiently converting wind energy into electricity, which relates to the technical field of wind power generation, including a rotating device and a disassembly device, wherein a rotating plate is fixedly installed on the top of the rotating device, a placing frame is rotatably installed on the top of the rotating plate, a placing groove is opened on the top of the placing frame, and blades are arranged inside the placing groove, wherein the disassembly device comprises a placing rod, a placing plate, a limiting rod, a stabilizing plate, a protective plate, a protective rod and a protective frame, the limiting rod moves in a direction away from the placing rod to disengage from the limiting hole and release the limiting of the blade, the placing plate moves upward to push the blade to move and eject the blade, and the provision of a protective frame can prevent the blade from accidentally loosening or falling off due to accidental touch by personnel, thereby reducing the risk of accidents, and by reducing the time for disassembling and installing the blades, the downtime of the equipment can be significantly reduced, thereby improving the production capacity of the wind power generation equipment.

The utility model discloses a rolling fluid oxygenation device for a plate with different thicknesses, which comprises a long shaft pump and a main air pipe, a pair of branch pipelines is connected to the lower wall surface of the main air pipe, a plurality of air nozzles are respectively mounted on the pair of branch pipelines, a motor is mounted at the control end of the long shaft pump, and the main air pipe is connected with the motor. The utility model relates to the technical field of automobile material research equipment, and adopts a working mode of combining an oxygenation device and a long shaft pump stirring device, and an air oxygenation device is additionally arranged between a sewage tank and a clean water tank, so that the oxygen content of emulsion in the sewage tank is increased, and the oxygen and anaerobic bacteria components in the emulsion generate chemical reaction; the influence of anaerobic bacteria on the deterioration of the emulsion is eliminated, and peculiar smell is removed along with floating of bubbles; the long shaft pump is additionally arranged so as to provide flowing power for the emulsion and enhance the circulation capacity of the emulsion from bottom to top, so that crystalline oil is fully dissolved, and anaerobic bacteria fully react.

The utility model relates to a kind of four-slot dynamic and static pressure spindle structure, it includes main shaft, sliding bearing and thrust bearing, the sliding bearing is sleeved on main shaft, the thrust bearing is connected with main shaft;Four slots are equipped on the sliding bearing, the inner surface of sliding bearing is divided into upper static pressure cavity, lower static pressure cavity, front end static pressure cavity and rear end static pressure cavity, the four slots completely disconnect each static pressure cavity, to enhance the dynamic pressure effect when main shaft rotates, improve the rigidity of main shaft.The rigidity of the utility model main shaft is significantly improved, operates more stably, so the grinding capacity that can be borne is also stronger.This not only improves grinding efficiency, but also significantly improves grinding quality, especially the surface quality of roller.

The utility model relates to the technical field of phase modifiers, in particular to an air cooling type phase modifier lubricating oil device which comprises a bottom plate, a box body, a cover plate and a connecting mechanism, the box body is arranged at the top of the bottom plate, the cover plate is connected with the box body through the connecting mechanism, one side of the box body is provided with an oil outlet pipe and an oil return pipe, and the oil outlet pipe is connected with the oil return pipe. A liquid inlet assembly is arranged at the top of the cover plate, the connecting mechanism comprises a positioning block, a fixed block, a first bearing, a rotating block, a second bearing, a rotating frame, a sliding groove, a sliding block and an electromagnet, one end of the positioning block is connected with the cover plate, the other end of the positioning block extends into the top of the box body, a positioning groove matched with the positioning block is formed in the box body, and the electromagnet is arranged in the positioning groove. One end of the fixed block is connected with the box body, one end of the rotating block is connected with the fixed block through the first bearing, and the air cooling type phase modifier lubricating oil device solves the problem that existing equipment is inconvenient to clean.

The invention discloses a planetary gear transmission structure and a compact oil way hydraulic system of the planetary gear transmission structure, and relates to the technical field of planetary gear transmission. The planetary gear transmission oil supply structure solves the problems that an existing planetary gear transmission oil supply structure is complex in installation and disassembly process, the implementation efficiency of the assembly and disassembly process is low, and the appearance size of a planetary gear transmission device is large. A center wheel is rotationally connected with an upper cover shell and a lower cover shell which are combined, two planet wheel bodies are meshed with the two center wheel bodies respectively, planet wheels are rotationally connected with a planet carrier, a front floating gear ring and a rear floating gear ring are meshed with the two planet wheel bodies respectively, gear ring wheel bodies are meshed with the front floating gear ring and the rear floating gear ring, and the rear end of a gear ring wheel shaft is rotationally connected with a main box body. The front end of the gear ring axle is rotationally connected with the planet carrier. The planetary gear transmission structure is more compact, the complexity of the mounting and dismounting process is reduced, and the implementation efficiency of the assembling and dismounting process is improved.

The utility model belongs to the technical field of sealing ring, specifically disclose a kind of high and low temperature ACM sealing ring, including support body, the skeleton and spring that are enclosed in the inside of support body, the spring is used to tighten the support body;The support body includes the inner lip, connecting lip and outer lip sequentially arranged from inside to outside, the connecting lip is located between the lower end of inner lip and the lower end of outer lip, and the lower end of connecting lip is equipped with connecting flash.The utility model provides a kind of high and low temperature ACM sealing ring, and inner lip is composed of upper end lip, first abutment lip and second abutment lip, and upper end lip can effectively block dust, mud and other pollutants in external environment from invading sealing area after assembly, providing the first line of defense for internal system;First abutment lip and second abutment lip work cooperatively, and form a double contact interface closely with shaft.This design significantly improves the sealing reliability, ensures that the lubricating oil in the equipment interior does not leak outward, and maintains the stable operation of lubricating system.

This utility model discloses a low-wear dustproof geared motor, including a mounting base. A dustproof device is provided above the mounting base. A drive motor is fixedly connected to the rear of the mounting base. A reduction gear is provided in front of the mounting base. The dustproof device includes a frame. Dustproof nets are fixedly connected around the frame. A fixing block is fixedly connected to the front of the dustproof net. A stabilizing bearing is provided in the middle of the fixing block. A fan is fixedly connected to the middle of the left and right dustproof nets. First mounting blocks are fixedly connected to the four lower corners of the frame. The reduction gear includes a housing. An input rod is provided at the rear of the housing. This structure improves lubrication and reduces overall wear; it also prevents most dust from adhering to the motor and reduction gear, reducing the impact of dust on the device.

The present invention belongs to the technical field of stamping and forming devices, and discloses a stamping and forming device for automobile sheet metal parts, comprising a bottom plate and a top plate, the bottom plate and the top plate are fixed by guide columns, a lower mold is fixedly arranged on the bottom plate, an electric push rod is fixedly arranged on the top plate, a mounting plate is fixedly arranged on the output end of the electric push rod, an upper mold is fixedly arranged on the mounting plate, the upper mold is used in coordination with the lower mold, a storage tank, a connecting channel, a plurality of shunt channels, a plurality of liquid collecting tanks and a plurality of spray holes equipped with atomizing nozzles are provided inside the upper mold, wherein a connecting hole is provided inside the storage tank, the connecting hole is connected to a storage box fixedly arranged on the top plate through a conduit, and the storage tank is connected to the plurality of shunt channels through the connecting channel; the present invention can spray liquid onto the upper surface of the automobile sheet metal part through the coordination of the provided storage box, spray holes, etc., thereby reducing the possibility of adhesion between the automobile sheet metal part and the upper mold.

The invention relates to the technical field of gear smearing, in particular to a valve gearbox gear lubricating grease smearing device which comprises a smearing base, a smearing mechanism for evenly spraying lubricating grease on a gear to be smeared when the gear to be smeared rotates is arranged on the smearing base, and the smearing mechanism comprises a spraying box fixedly installed at the top of one side of the smearing base; the rotating transverse shaft is arranged at the bottom of the spraying box, penetrates through the coating base and rotates with the coating base through a bearing, an extrusion coating assembly used for spraying lubricating grease to the gear to be coated is arranged on the spraying box, and a driving part used for driving the positioning assembly firstly and then synchronously driving the rotating transverse shaft and the extrusion coating assembly to operate is arranged on the inner side of the coating base. According to the gear lubricating device, lubricating grease can be smeared more evenly, it is guaranteed that the surface of a gear is comprehensively lubricated, local abrasion of the gear can be reduced, the situation of lubricating grease waste can be prevented, the optimal lubricating effect of the gear is guaranteed, and the service life of the gear is prolonged.

The utility model discloses a subway pantograph overhauling platform, and particularly relates to the technical field of pantograph overhauling, the subway pantograph overhauling platform comprises a supporting bottom box, the upper end face of the supporting bottom box is connected with an operation platform, one side of the upper end face of the operation platform is connected with a side surrounding plate, the upper end face of the side surrounding plate is connected with a top plate, and the lower end of the top plate is provided with a connecting plate. The lower end face of the connecting plate is movably connected with a claw clamp through a hinge piece, and a connecting base is arranged at the upper end of the connecting plate. According to the utility model, the adjusting structure is arranged, so that the maintenance platform can adjust the placement height and angle of the workpiece, and during maintenance operation, traditional manual adjustment is replaced by electric adjustment, so that the workpiece can be quickly adjusted to other surfaces, the surface turning convenience of the workpiece is enhanced, the workpiece is convenient to maintain, and in addition, the maintenance efficiency is improved. And the placing height of the workpiece can be adjusted, so that the placing position of the workpiece is matched with the required maintenance height, the situation of maintenance omission caused by the placing height is avoided, and maintenance thoroughness is ensured.

The invention discloses a method for regulating and controlling the microstructure and aperture of a hollow fiber ceramic membrane and a product obtained by the method. Based on a phase inversion process of dry / wet spinning forming, a proper surfactant is introduced as an additive by optimizing and reasonably designing the variety and coarse and fine grain composition of ceramic raw materials in spinning slurry; the combination of an inner coagulating agent (core liquid) and an outer coagulating bath (outer coagulating agent) is designed, so that nano-particles are migrated to the outer surface layer of a wet membrane to form a small-particle skin layer in the extrusion molding and phase inversion processes, and the hollow fiber ceramic ultrafiltration membrane with the asymmetric structure, which is small in separation membrane layer aperture (the aperture is less than or equal to 25nm, and the average aperture is less than or equal to 20nm) and narrow in aperture distribution range, is obtained. According to the invention, the problem that the ceramic ultrafiltration membrane with small aperture and high separation precision cannot be prepared by adopting a phase inversion method in the prior art is solved, and the prepared ceramic membrane can better meet the application requirements of fine separation while the membrane preparation process is greatly simplified and the preparation cost is reduced.

The invention discloses high-temperature-resistant anti-corrosion lubricating oil for a gearbox of an electric vehicle, and relates to the technical field of gearbox lubricating oil, the lubricating oil is prepared from the following raw materials by weight: 80-120 parts of base oil, 5-10 parts of modified silicone oil, 1-5 parts of a dispersant, 0.5-3 parts of an anti-wear reagent at extreme pressure, 0.5-3 parts of an antioxidant, 0.05-0.5 part of a metal deactivator, and 0.05-0.5 part of an antifoaming agent. The comprehensive performance of the lubricating oil is improved by improving the component formula, so that the service life of the lubricating oil is prolonged.

The utility model discloses an oil nozzle cover for an engine oil barrel, which relates to the technical field of engine oil barrels and comprises an oil barrel, a top cover is arranged at the upper end of the oil barrel, an oil outlet pipe is connected to the right of the upper end of the top cover in a penetrating manner, a rectangular block is arranged at the upper end of the oil outlet pipe, and an oil outlet nozzle is arranged at the upper end of the rectangular block. An adjusting component is arranged on the left side of the rectangular block, an adjusting groove is formed in the upper end of the rectangular block and extends to the lower end of the rectangular block, a sliding groove is formed in the left wall of the adjusting groove, and the adjusting component extends into the sliding groove. According to the utility model, the amount of poured oil can be adjusted by arranging the adjusting part, so that a user can conveniently and accurately control the amount of oil as required, the amount of poured excessive engine oil in the use process is reduced, and the waste of the engine oil is reduced; and through joint cooperation of the annular plate, the connecting plate, the measuring rod and the scale marks, a user can conveniently know the value of the oil outlet amount, and the user can conveniently adjust the oil outlet amount in the follow-up process.

The invention relates to the technical field of material receiving devices, and discloses a material receiving device of a numerical control lathe for machining electronic connector shaft parts, the material receiving device comprises a support frame, the inner wall of the support frame is fixedly connected with a material receiving port, the surface of the support frame is provided with a material shaking device, and the surface of the support frame is provided with a lubricating device. A collecting device is arranged on the left side of the supporting frame. The material shaking device comprises a fixing plate, a first supporting plate, a motor, a first rotating rod, an L-shaped rotating rod, a moving plate, a connecting rod, a sliding plate, a first sliding groove plate, a material shaking plate, a first belt, a second rotating rod and a feeding plate, the fixing plate is fixedly connected to the front portion of the supporting frame, and the first supporting plate is fixedly connected to the front portion of the supporting frame; the motor is fixedly connected to the top of the first supporting plate. According to the intermittent quantitative discharging device, parts stacked at the material receiving opening can be intermittently and quantitatively discharged through rotation of the feeding plate, and the workpieces are prevented from being stacked at the material receiving opening.

The invention discloses a flexographic ink and a preparation method thereof. The ink consists of the following components in parts by weight: 13-15 parts of aqueous acrylic resin, 9-12 parts of aqueous polyester resin, 10-12 parts of colorant, 7-8 parts of defoamer, 12-15 parts of modified ethyl cellulose, 3-5 parts of 2,5-furan dimethanol, 3-4 parts of polyvinyl alcohol, 2-5 parts of N-hydroxysuccinimide, 2-3 parts of ethyl lactate, 1-2 parts of fatty acid methyl ester and 50-55 parts of deionized water. According to the invention, ethyl cellulose and chitosan are mixed and then subjected to plasma treatment, and polyethylene glycol is added to react and modify in a reactor, so that the adhesion and water resistance of the ink are improved. The flexographic ink prepared by the invention has strong adhesion, good water resistance, fast surface drying speed, good gloss of ink, good leveling effect, and is environmentally friendly and safe, has a simple production process and is easy to promote.

The invention relates to the technical field of steam condenser descaling, and particularly discloses a dynamic anti-scaling aluminum-based efficient steam condenser which comprises a base, a shell is arranged on the base, a top cover is arranged on the shell, a condensation assembly is arranged in the shell, and a descaling assembly and an anti-scratching assembly are arranged on the outer side of the condensation assembly. According to the dynamic anti-scaling type aluminum-based efficient steam condenser, a fixing plate and a scraper are continuously pushed to be tightly attached to the outer wall of a heat exchange pipe through the elastic force of a spring in a descaling assembly, hydraulic oil in an oil storage barrel generates damping force in the reciprocating motion of a first piston, the springback speed of the spring is effectively reduced, and shaking or impact of the scraper is avoided; in addition, a magnet on the scraper is matched with a magnetic attraction base on the fixing plate, and the magnet and the magnetic attraction base are connected in a reinforced mode through a bolt, so that the scraper can be rapidly disassembled and replaced after being abraded, and the convenience of descaling maintenance is improved.

The invention relates to an energy-saving hydraulic device, which belongs to the technical field of hydraulic machines, and comprises an oil tank and a partition plate fixedly connected in the oil tank, and further comprises an oil pumping mechanism, a hydraulic cylinder and a hydraulic cylinder, an oil filtering mechanism; a separation mechanism; and a transmission mechanism. Through the arrangement of the separation mechanism and the zeolite particles filled in the separation mechanism, when the oil pumping mechanism works, the separation mechanism is driven to rotate, hydraulic oil makes contact with the zeolite particles in the separation mechanism through the separation mechanism, the zeolite particles absorb water in the hydraulic oil, and after the zeolite particles absorb the water in the hydraulic oil, the zeolite particles are separated from the water in the separation mechanism. When the hydraulic device works, the zeolite particles release heat, the hydraulic oil is heated, the viscosity of the hydraulic oil is reduced, the situation that the viscosity of the hydraulic oil is too high, and consequently the flow resistance is increased is prevented, the working smoothness of the hydraulic device is improved, the zeolite particles can adsorb gas in the hydraulic oil, and the probability that the rigidity is reduced due to the existence of the gas is reduced. And the timeliness of hydraulic working of the hydraulic device is ensured.

The utility model relates to the technical field of working vehicle leveling, and discloses an overhead working vehicle working bucket leveling mechanism which comprises a four-bar mechanism located between a chassis and a working bucket of an overhead working vehicle. The four-bar mechanism comprises a pair of parallel mounting rods; a chassis and a working bucket of the overhead working truck are fixed with the four-bar mechanism through a mounting rod; a protective cover is arranged at an oil injection hole in the four-bar mechanism; the protective cover is in running fit with the four-bar mechanism; a reset assembly is arranged between the protective cover and the four-bar mechanism. The oil injection device has the effect of reducing the possibility that dust is attached to the oil injection hole.

One aspect of the present invention is a refrigerating machine including a refrigerant circulation system including a compressor, a condenser, an expansion mechanism, and an evaporator, and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil contains: a first base oil having a compatible region with the refrigerant in a range of a temperature of 30°C or lower and an oil ratio of 1 to 80% by mass; and a second base oil having a kinematic viscosity at 40°C lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil.

The invention relates to the technical field of dust removal and prevention, in particular to a mining trackless rubber-tyred vehicle tail dust falling assembly which comprises a vehicle body, a bottom plate is fixedly connected to the bottom of the vehicle body, and hubs are arranged on the two sides of the two ends of the bottom of the bottom plate. Through the arrangement of the rectangular box body, raised dust raised by a hub on the ground can be effectively absorbed by utilizing airflow in the rectangular box body, so that the purpose of reducing the raised dust is achieved, on one hand, the raised dust can be effectively reduced, and on the other hand, the probability that the dust falls on a bearing can be reduced by reducing the raised dust; by reducing the probability that raised dust falls on the bearing, the bearing can be effectively cooled, and the problems that the temperature of lubricating oil in the bearing is too high due to the fact that the raised dust covers the outer side of the bearing, the viscosity of the lubricating oil is reduced, the lubricating degree of the lubricating oil to the bearing is insufficient, and bearing abrasion is aggravated are solved. The service life of the bearing is shortened.

The utility model discloses an automatic lubricating oil viscosity adjusting device which comprises a feed hopper, a filter box is clamped and connected in the feed hopper, first motors are symmetrically and fixedly connected to the top of the filter box, the output ends of the first motors are fixedly connected with screw rods, the outer sides of the screw rods are in threaded connection with sliding plates, and the sliding plates are in threaded connection with the sliding plates. A filter screen is fixedly connected to one side of the sliding plate, a stirring tank is arranged at the bottom of the feeding hopper, and if received viscosity data is lower than a set viscosity range, a tackifier can be added through a second feeding pipe to be mixed with lubricating oil in the stirring tank, so that the concentration of the lubricating oil in the stirring tank can be increased; if the received viscosity data is higher than a set viscosity range, a diluent is added through a second feeding pipe, then a heating pipe is started for heating, and in the stirring process of a stirring rod, a heat conduction sleeve and an electric heating wire on the outer side uniformly heat internal lubricating oil, so that the viscosity of the lubricating oil in the stirring tank can be quickly reduced, and the mixing and adjusting efficiency is improved; and subsequent use is facilitated.