75results about How to "Guaranteed lubrication effect" patented technology

The utility model discloses a covering part side drawing die which comprises a lower die base, an upper die base and an oil supply mechanism, a lower oil spraying hole is formed in the top of the lower die base, a first electromagnetic valve communicated with the lower oil spraying hole is arranged on the side wall of the lower die base, an upper oil spraying hole is formed in the bottom of the upper die base, and a second electromagnetic valve communicated with the upper oil spraying hole is arranged on the side wall of the upper die base. A first electromagnetic valve communicated with the upper oil hole is arranged on the side wall of the upper die base, a second electromagnetic valve communicated with the upper oil hole is arranged on the side wall of the upper die base, the oil supply mechanism comprises an oil barrel, an oil pump communicated with the oil barrel and an oil supply pipeline communicated with the oil pump, and the oil supply pipeline is respectively communicated with the first electromagnetic valve and the second electromagnetic valve. The lower oil spraying button controls the oil pump and the first electromagnetic valve to be opened, the lubricating oil is sprayed to the bottom of the automobile covering part material from the lower spraying hole to keep the bottom of the automobile covering part material lubricated, the lubricating oil is sprayed to the top of the automobile covering part material from the upper spraying hole to keep the top of the automobile covering part material lubricated, and friction scratching of the bottom and the top is avoided.

The utility model discloses a differential mechanism and a lubricating structure thereof, and belongs to the field of automobile differential system lubrication. The lubricating structure comprises at least one oil inlet hole and at least one oil outlet hole, the oil inlet holes and the oil outlet holes are formed in a differential shell and communicated with a differential gear set in the differential shell, the oil inlet holes are formed in the side close to a differential bearing, and the oil outlet holes are located in the side away from the differential bearing; the oil collecting baffle ring is connected to the differential mechanism shell in a sleeving mode and surrounds the outer side of the oil inlet hole; the oil collecting groove is formed in a bearing seat of the differential mechanism, the oil spraying hole is communicated with the oil collecting groove, the oil collecting groove is in bolted connection with an oil passing pipe connector, and the extending direction of the oil spraying hole faces the end face, provided with the oil inlet hole, of the differential mechanism shell. According to the differential mechanism, the differential gear in the differential mechanism can obtain a good lubricating effect.

The utility model discloses a kind of planetary reducer self-lubricating devices, belong to planetary reducer lubrication field, including base, the top of base is fixedly connected with motor main body, the output shaft of motor main body is fixedly connected with sun gear, the outside of sun gear is engaged with three planetary gears, the outside of planetary gear is equipped with the shell engaged with it, the top of shell is equipped with oil supply piece, the top of oil supply piece is threadedly connected with top cover, the top of top cover is equipped with air valve;The planetary reducer self-lubricating device, the cooperation of the walking track of planetary gear and the matching of oil supply piece upper end of resistance is used to control the discharge of lubricating oil, greatly simplify the device structure, reduce the overall cost of planetary reducer, device overall structure is relatively simple, without complex electronic components and sensing device, reduce the probability of failure occurrence, improve the reliability and stability of device, reduce maintenance cost.

The application relates to the technical field of machine tool equipment, and discloses a metal forming machine tool equipment with an automatic lubricating function, which comprises a rack, a control panel, a lubricating processing mechanism and a collection filtering mechanism; the filtering mechanism is installed in the rack, the collected lubricating oil is filtered through the filter screen in the movable table, the used lubricating oil is collected and filtered; and a clamping fixing mechanism is arranged; the collection filtering mechanism is arranged, the splashed lubricating oil can be blocked through the blocking piece, the lubricating oil is left in the bottom of the movable table or in the placing groove, the metal wire scraps generated in the processing in the placing groove are taken away in the flowing process of the lubricating oil, the metal wire scraps and the lubricating oil flow into the filtering groove through the first liquid leakage hole or the second liquid leakage hole, the metal wire scraps generated in the processing process can fall into the screen mesh and be collected, the lubricating oil is prevented from splashing around and being difficult to handle, and the lubricating oil can be reused.

The utility model provides an EPS steer-by-wire motor shaft. The EPS steer-by-wire motor shaft comprises a mounting shell, a shaft sleeve and a shaft sleeve, the driving component is mounted in the mounting shell, a connecting assembly is mounted at the output end of the driving component through a clamping block, a connecting shaft is mounted at the other end of the connecting assembly through a clamping groove, a stabilizing shaft is fixedly connected to the other end of the connecting shaft, and an output shaft is fixedly connected to the other end of the stabilizing shaft; a transmission gear is installed at the other end of the output shaft through a fixing buckle, an oil outlet is formed in the outer surface of the transmission gear, and through weight reduction openings are formed in one end of the connecting shaft, one end of the stabilizing shaft and one end of the output shaft. According to the EPS steer-by-wire motor shaft provided by the utility model, the steering motor shaft which is light in weight is adopted through the design, so that the rotating stability of the steering motor shaft is improved, meanwhile, the lubricating effect is kept at the joint of the transmission gear and the gear box in a manner of continuously injecting lubricating oil, and the EPS steer-by-wire motor shaft is beneficial to reducing abrasion and prolonging the service life of the joint.

The utility model belongs to the technical field of cabin door hinges, and particularly relates to a new energy pure electric rear cabin door hinge which comprises a hinge base and a hinge rod body, the hinge rod body is formed by combining a straight-line-section rod body, a bent-section rod body and an inclined-section rod body, and the hinge rod body is formed through extrusion of a die-casting die. A first locking adjusting opening is formed in the surface of the linear section rod body, and a hinge groove is formed in one end of the bent section rod body. According to the new energy pure electric rear cabin door hinge, firstly, through precise design of a lubricating system, continuous lubrication of the hinge is ensured, abrasion is remarkably reduced, the service life is prolonged, and the reliability of the hinge is improved; secondly, excellent sealing performance is provided through the combination of the sealing ball and the sealing ring, leakage of lubricating oil is effectively prevented, cleanliness of the system is kept, and maintenance cost is reduced; in addition, according to the design, the environmental adaptability is improved, meanwhile, the user experience is improved, noise and vibration are reduced, and the attractiveness of the vehicle is kept.

The application relates to the field of lubricating oil, in particular to a high-temperature-resistant high-lubricating stainless steel cutting oil and a preparation method thereof. The cutting oil is composed of base oil, extrusion agent, additive, anti-emulsifier and diluent in specific proportions, wherein the additive comprises polyisobutylene succinic anhydride, amine and propylene oxide polymer, boron-containing compound, basic alkyl salt, imidazoline oleate, antioxidant compound and ethylene-propylene copolymer. By optimizing the proportions of various components and selecting suitable materials, the application can significantly improve the oxidation resistance and cleanliness of the cutting oil, effectively prolong the temperature of the cutting oil in the recycling and reuse process, reduce equipment wear and contamination, and improve the production efficiency of stainless steel.

The utility model discloses a track and pulley assembly structure of an electric curtain, which relates to the technical field of electric curtains and comprises a track body and a pulley piece, a pair of guide rails is mounted in the track body, and the pulley piece comprises a moving shaft arranged in the track body. Rollers matched with the guide rails are rotationally mounted at the two ends of the moving shaft, a sleeve shell fixedly sleeves the middle of the moving shaft, and a hook is fixedly connected to the lower end of the sleeve shell; lubricating mechanisms are arranged on the two sides of the top of the guide rail and comprise oil boxes fixedly installed on the top of the guide rail. The lubricating mechanism is arranged at the top of the guide rail, the oil control piece is triggered through rolling of the roller, lubricating oil can be automatically released into the guide rail, the self-lubricating effect on the guide rail and the roller is achieved every time the curtain is opened and closed, friction and abrasion between the guide rail and the roller are effectively reduced, and the opening and closing smoothness of the curtain is guaranteed; and the service life of equipment is prolonged.

The utility model relates to the technical field of axle head discloses a convenient axle head of lubrication, including axle head body, the surface of axle head body is equipped with outer thread, the outer thread is connected with the inner wall thread connection of connecting ring, the bottom of connecting ring is equipped with oil leak hole, the oil leak hole is equipped with several. The utility model discloses through lubricating oil and injects the oil storage groove in the inside of connecting ring through oil inlet. The oil storage groove can store a certain amount of lubricating oil, ensure that the axle head has enough lubricating oil supply in the operation process, and the lubricating oil in the oil storage groove is evenly distributed on the surface of axle head body through the oil leak hole of the bottom of connecting ring, ensures that the axle head is in good lubrication state in the operation process, and lubricating oil is injected into the oil storage groove through the oil inlet. The design of oil inlet facilitates the addition of lubricating oil, improves the convenience of maintenance, and the oil inlet inner wall is clamped with a plug, which can seal the oil inlet after the addition of lubricating oil is completed, preventing lubricating oil leakage.

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 mold accessories, in particular to a self-lubricating mold guide device which comprises a guide sleeve installed on a fixed mold of a mold and a guide column installed on a movable mold of the mold. The guide column is located in the guide lubricating cavity and is in sliding connection with the guide lubricating cavity, an upper flow channel arranged in the vertical direction is formed in a shell of the guide sleeve, a flaring cavity is formed in the bottom of the upper flow channel, and a side edge inlet hole communicated with the guide lubricating cavity is formed in the inner side cavity wall of the flaring cavity. A lower runner is arranged on the bottom wall of the flaring cavity, a bottom runner is arranged at the bottom of the lower runner and located in a bottom shell of the guide sleeve, and a plurality of bottom overflow holes communicated with the guide lubricating cavity are formed in the top wall of the bottom runner. The utility model is convenient for self-lubricating operation, is not easy to wear, and is favorable for prolonging the service life.

The utility model relates to the technical field of compressors, in particular to a gas compressor rotor seat easy to disassemble, assemble and maintain, which comprises a rotor seat main body, a shell arranged at the top of the rotor seat main body, a plurality of fixing components arranged between the rotor seat main body and the shell, and a buffer component arranged in the rotor seat main body. And a pair of self-lubricating assemblies are symmetrically arranged in the rotor seat main body. According to the utility model, through the arrangement of the fixing assembly, the stable and convenient installation between the rotor seat main body and the housing is realized, and through the cooperation of the limiting block and the limiting groove, the knob can be firmly clamped in the limiting groove after being rotated by 90 degrees, so that the stable fixing effect is realized, and the installation and disassembly processes become simple and rapid; vibration generated by the cam shaft rotor disc is effectively buffered through combined use of the buffering assembly, the first spring, the piston rod, the first piston and the oil storage barrel, the stability of the gas compressor is improved, and the service life of the gas compressor is prolonged.

The utility model relates to the technical field of roll press, specifically is a kind of roll press bearing seat track sealing device.Sealing structure is provided with in the gap outside of the dynamic roller bearing seat and upper crossbeam and / or lower crossbeam;Sealing structure contains the first sealing part fixed on the upper crossbeam or lower crossbeam and the second sealing part fixed on the dynamic roller bearing seat, the first sealing part has the first extension from the inside of upper crossbeam or lower crossbeam outwardly extending, the second sealing part has the second extension from the inside of dynamic roller bearing seat outwardly extending, the first extension and the second extension are mutually overlapped and form non-contact labyrinth seal in the outside of gap.Outside dust and material invasion movement gap can be effectively blocked.The sealing structure is fixed on the crossbeam and bearing seat of relative motion respectively, and zigzag path is formed using mutually overlapped extension, thereby helping to reduce the damage to track lubrication state.

The utility model belongs to the technical field of rod end knuckle bearings, and discloses an anti-impact composite sealing type rod end knuckle bearing which comprises a bearing outer ring, a bearing inner ring is connected to the inner side of the bearing outer ring in a rolling mode, an oil box is installed on the bearing outer ring, and steel balls are connected to the position, close to the bearing inner ring, of the oil box in a rolling mode. The steel balls are attached to the outer wall of the bearing inner ring, an attaching assembly is connected between the oil box and the bearing outer ring and comprises a supporting plate arranged above the oil box, a guide rod penetrates through the supporting plate, the portion, between the supporting plate and the oil box, of the guide rod is sleeved with a spring, the top end of the guide rod is connected with a blocking plate, and the blocking plate is connected with the oil box. The supporting plate is fixed, the supporting plate and the oil box are connected through the spring, the spring exerts force to enable the steel balls on the oil box to be continuously attached to the outer wall of the bearing inner ring, it is guaranteed that the steel balls can be driven to roll when the bearing inner ring moves, lubricating oil in the oil box is brought out, and therefore the bearing is lubricated.

The utility model relates to an exposed injection lead screw assembly and an injection molding machine thereof, the exposed injection lead screw assembly comprises a lead screw and a lead screw nut, the driving end of the lead screw is inserted into a bearing, and a grease injection hole penetrating through the inner side and the outer side is formed in the lead screw nut; the grease injection hole is filled with grease; the bearing is wrapped in a closed oil cavity, and the oil cavity is filled with lubricating oil. By the adoption of the design of the exposed lead screw, only the bearing part is lubricated through the closed oil cavity, the requirement for high-precision sealing is greatly reduced, and a complex cylinder barrel sealing structure in traditional oil immersion lubrication is avoided. Therefore, the processing and assembling difficulty is reduced, and the risk of lubricating oil leakage caused by sealing failure is reduced, so that the manufacturing cost and the maintenance cost are reduced.

The utility model discloses a double cooling snow making is with sliding vane type air compressor, including mainframe shell, mainframe shell one end installs middle oil cooler, middle oil cooler side surface is connected motor cooling fan, motor cooling fan side surface installs drive motor, drive motor one end is equipped with rear air cooler, middle oil cooler side surface is connected oil gas separator. This double cooling snow making is with sliding vane type air compressor, through installing middle oil cooler in mainframe shell one end, simultaneously in middle oil cooler side surface is connected motor cooling fan, and in motor cooling fan side surface installs drive motor, and the layout is reasonable compact, utilizes motor fan and carries out air cooling, need not for air cooler alone design air duct or installation position, when using, it is more convenient in the snow making site deployment and transportation of limited space, not only reduced manufacturing cost also reduced operating energy consumption, improved the economy and reliability of system.

The utility model relates to a high-precision metal piece bud punching die, which belongs to the technical field of metal wire processing, an external oil adding component is arranged on one side of the bud punching die, the bud punching die comprises an upper die set and a lower die set, the upper die set comprises an upper die seat, an upper padding plate, a fixing plate, a height limiting plate, a discharging plate and a bud punching male die which are arranged from top to bottom, the bud punching male die is connected with the fixing plate and penetrates through the height limiting plate to stretch into an upper forming hole of the discharging plate. The lower die set comprises a female die plate, a lower base plate, a lower die base, a bud punching female die insert and a stripping assembly, the female die plate, the lower base plate and the lower die base are sequentially arranged from top to bottom, a lower forming hole is formed in the female die plate, the bud punching female die insert is arranged in the lower forming hole and corresponds to the bud punching male die, and a lower forming hole is formed in the lower die plate. The stripping assembly is arranged in the lower die set and used for ejecting out the formed part. The external oil adding assembly is used for adding oil to the bud punching female die insert of the lower die set before die assembly, and the produced metal piece convex bud size is stable.

This utility model discloses a graphite lubrication device for rotary kiln support rollers, belonging to the field of rotary kiln support roller lubrication technology, and is mainly used for lubricating rotary kiln support rollers. The technical problem to be solved by this utility model is to provide a graphite lubrication device for rotary kiln support rollers, including a base, support rollers mounted on the base, and a support frame. The support frame is equipped with a clamping device for controlling the contact between graphite blocks and the support rollers. The clamping device includes a limiting rod disposed between the support frames, with a guide rod slidably passing through the limiting rod, the lower end of which connects with the graphite block. A compression spring is sleeved on the guide rod, with one end abutting the limiting rod and the other end abutting the graphite block. The support frame is equipped with a graphite placement box, in which the graphite blocks are slidably placed. The graphite placement box has an upper opening and a lower opening. The thrust generated by the compression spring during its compression and relaxation process drives the graphite blocks to slide downwards and abut against the support rollers, ensuring that the graphite blocks are always in contact with the support rollers, forming a lubricating film on the support rollers to guarantee the lubrication effect.

The application relates to a preparation method of a ferrite-martensite dual-phase steel, which comprises the steps of converter smelting, LF furnace refining, RH refining, tundish treatment and continuous casting, and through controlling specific parameters in each existing step, cooperating with the setting of a continuous casting protective slag and the specific smelting steel grade component content, the ferrite-martensite dual-phase steel can reduce the steel slag reactivity and has good lubricity in the continuous casting process, so that the continuous casting is ensured to be smooth.

The crankcase of the motorcycle engine comprises a left crankcase body and a right crankcase body, a left crankshaft cavity is formed in one side of the left crankcase body, a left cover cavity is formed in the other side of the left crankcase body, a first oil through hole is formed between the left crankshaft cavity and the left cover cavity, and an oil storage cavity is formed in the bottom of the left crankcase body; a left crankshaft cavity is formed in one side of the left box body, a right crankshaft cavity is formed in one side of the right box body, a right cover cavity is formed in the other side of the right box body, a transmission gear cavity is formed in the same side of the left crankshaft cavity on the left box body, the transmission gear cavity and the left crankshaft cavity are arranged in a mutually separated mode, and a first oil way is arranged between the transmission gear cavity and the oil storage cavity. And a second oil through hole is formed between the transmission gear cavity and the left cover cavity. According to the scheme, the problem that the performance of an engine is reduced due to the fact that a crankcase in the prior art easily causes large rotating resistance of a crankshaft is solved.

The application relates to a box cargo fan-shaped upper shelf system, which comprises a device module and a general control module for controlling the device module, the general control module comprises a control module, a fan-shaped upper shelf analysis module, a depth marking module and a threshold control module, the device module comprises a mechanical arm module, a stacking module and a shelf module, the shelf module comprises a plurality of shelves, and different shelves are divided into a shelf A and a shelf B based on shelf positions, and the division of the shelves can be selected based on information of the box body and divided into multiple kinds; the application has the advantages of improving the warehouse-out efficiency and self-lubrication of the stacking machine.

The invention relates to the technical field of air compressors, in particular to an integrated oil-gas separation and cooling air compressor which comprises a base, an oil-gas cooler arranged at the upper end of the base, an oil-gas separation tank, an air compressor body and a filter mounting seat. The air compressor body is provided with an air inlet, an oil liquid inlet and an oil gas output port. The oil-gas cooler is fixedly provided with an oil-gas outlet and an oil-gas inlet; an oil-gas input port, an oil liquid output port and a compressed air output port are fixedly formed in the oil-gas separation tank; an oil-gas filter and an oil liquid filter are further arranged at the upper end of the filter mounting seat, a driving motor is fixedly connected to the upper end of the oil-gas separation tank, an air compressor body is further arranged on the oil-gas separation tank, the output end of the driving motor is fixedly connected with the air compressor body, and an oil-gas output port is connected with an oil-gas input port; the oil liquid output port is communicated with the oil-gas inlet, and the oil-gas outlet is communicated with the oil liquid inlet through the filter mounting seat.

The application discloses a gear box circulating cooling structure and cooling method for torque adjustment, relates to the field of gear box application, and comprises a base, the top of the base is provided with an input shaft, an output shaft, an intermediate shaft and a gear set, the outside of the input shaft, the output shaft and the intermediate shaft is provided with an oil injection assembly, the top of a middle cover is provided with an upper cover assembly, and the bottom of the upper cover assembly is provided with an oil sprinkling plate. The application sets two lubricating modes of lubricating oil sprinkling and lubricating oil spraying, can lubricate gears in different rotating speed stages, improves lubricating efficiency, when the gear box is cold started or driven at low speed, the oil sprinkling plate is used for oil sprinkling, when the rotating speed of the gear box increases, the centrifugal force of the oil injection assembly increases, the oil injection assembly is opened, and the lubricating oil is synchronously sprinkled and sprayed, and the sprayed lubricating oil is inclined, so that the lubricating oil can be better sprayed to the gear end face.

The invention discloses a hub bearing with high bearing capacity, which comprises a flange outer ring and a flange inner ring, a ring body is matched on the flange inner ring, a first row of raceway is arranged between the flange outer ring and the flange inner ring, and a second row of raceway is arranged between the ring body and the flange outer ring; the bearing is characterized in that a first row of rolling bodies are arranged on the first row of raceways, the first row of rolling bodies are self-aligning roller bearings, a second row of rolling bodies are arranged on the second row of rolling bodies, and the second row of rolling bodies are angular contact ball bearings. The structure layout is reasonable, the compact space of the electric vehicle hub motor is adapted, the transmission efficiency and the operation stability of the bearing are improved, the service life of the bearing is prolonged, and the use effect is good.

This utility model discloses a sand mixer agitator, including a transmission wheel, a mixing shaft, a mixer bearing chamber, a rotor body, and several mixing blade assemblies. The mixing blade assemblies are spirally assembled on the outer periphery of the rotor body. Each mixing blade assembly includes a mixing blade, a blade seat, and fixing bolts. The mixing blades are straight, rectangular structures made of spring steel. Two sides of the mixing blade's thickness fit into two sides of the mounting groove, and the inner side of the mixing blade's width fits into the bottom of the mounting groove. The outer side of the mixing blade's width is exposed. The bottom of the mounting groove is inclined to the radial direction of the rotor body. After being fixed in the mounting groove, the straight, rectangular mixing blades are arranged at an inclined angle to the radial direction of the rotor body, allowing the mixing blades to have more facing surfaces towards the object being mixed in the mixing direction, thereby increasing the mixing capacity and effect, and improving the overall sand mixing capacity of the sand mixer.

The present application relates to the technical field of lubricating grease, in particular to a lubricating grease composition for angle grinder and a preparation method thereof. The present application provides a lubricating grease composition for angle grinder, which comprises base oil, thickening agent and additive, wherein the additive comprises extreme pressure anti-wear agent, and the extreme pressure anti-wear agent comprises molybdenum-containing extreme pressure anti-wear agent, amino thioester extreme pressure anti-wear agent and zinc thiophosphate salt extreme pressure anti-wear agent with a mass ratio of (1.5-4):(0.5-2):(1-3). The present application effectively reduces the wear of gears when used in angle grinder through the selection and specific compounding of extreme pressure anti-wear agent, and at the same time can prolong the service life of angle grinder, meeting the lubrication requirements of angle grinder gears. The present application is matched with suitable base oil and thickening agent system, and the obtained lubricating grease composition can play excellent adhesion performance under high speed working conditions of angle grinder, reducing the risk of grease leakage of angle grinder while ensuring lubricity.

The invention relates to a grinding tool (1) comprising an elongated tool body (2), an axial channel (5) and at least one fluid transport channel, the tool body comprising a first end (20) comprising a grinding head (3) with an abrasive coating (4), the axial channel extending through the tool body (2) from a second end (21) over a given length of the body, the fluid transport channel being arranged in cooperation with the axial channel (5) to allow fluid introduced into the axial channel (5) at the second end (21) to be ejected through the grinding head (3), the grinding head (3) having an outer end face (30) delimited by an outer peripheral face (31), the outer end face having at least one groove (6a to 6f) extending radially from the axial channel (5) to the outer peripheral face (31), said groove being closed along its length by the abrasive coating (4) to form said at least one fluid transport channel. The invention also relates to a method of manufacturing an electroplated type grinding tool.

The utility model discloses a device for measuring sound velocity in a middle-high pressure hydraulic pipeline, which relates to the technical field of measuring devices and comprises a driving shaft, a rotary valve, a transition end cover, a hydraulic pipeline, a first fiber bragg grating sensor and a second fiber bragg grating sensor. An axial output port of the rotary valve is connected with a transition end cover, and the transition end cover is connected with a hydraulic pipeline; the front end of the hydraulic pipeline is connected with a first fiber grating sensor, and the tail end is connected with a second fiber grating sensor; the rotary valve comprises a valve cover, a valve body, and a rotary valve core and a bearing which are arranged in the valve body; the driving shaft is connected with the rotary valve element, and an explosion flushing cavity and a low-pressure cavity which are isolated from each other are formed in the rotary valve element; the blasting cavity is provided with a first conical nozzle, and the low-pressure cavity is provided with a second conical nozzle; an axial output port of the rotary valve is provided with a third conical nozzle; the transition end cover is provided with a fourth conical nozzle; measurement of the propagation sound velocity of oil in a hydraulic pipeline under a certain pressure is realized.

This utility model discloses a bass bearing with noise reduction function, including a hollow corrugated shell, an outer ring fixedly installed inside the hollow corrugated shell, and an inner ring rotatably installed inside the outer ring. Both ends of the inner ring surface are fixed with cages, and several equally spaced balls are embedded inside the cages, contacting the inner wall surface of the outer ring. A rubber bushing is fixed to the inner wall of the inner ring, and a fan-shaped protrusion is integrally formed on the outer wall of the rubber bushing. The end of the fan-shaped protrusion extends outward and penetrates to the outside of the inner ring. This utility model, through the interlocking structure of the inner ring, rubber bushing, fan-shaped protrusion, and cage, allows the inner ring to roll and rub against the outer ring via the cage and balls. During this rolling friction, the rubber bushing in the inner ring continuously contacts the double-wing elastic oil overflow structure via the fan-shaped protrusion, causing grease from the polyurethane foam block to overflow.