366results about "Lubricant transfer" patented technology

The utility model relates to a deep groove ball bearing grease injection production line which comprises a feeding and discharging mechanism, a flexibility detection mechanism, a grease injection mechanism, a weighing mechanism, a turnover mechanism, a gland mechanism, a grease homogenizing mechanism, a detection mechanism, a pushing mechanism and a workbench. According to the deep groove ball bearing grease injection production line, through mutual cooperation of the flexibility detection mechanism, the grease injection mechanism, the weighing mechanism, the turnover mechanism, the grease homogenizing mechanism and the like, all-directional grease injection, grease homogenizing and other operations of deep groove ball bearings can be achieved, the defective rate is reduced, the product consistency is guaranteed, and the product quality is greatly improved.

The invention provides an automobile air conditioner refrigerant oil filling tank which comprises a tank body, a supporting shell, a sealing cover, a retaining ring, an upper protective cover and a quick connecting mechanism, the sealing cover is provided with a liquid outlet end which is horizontally arranged and communicated with the tank body, a liquid outlet port is in threaded connection with a sleeve, and the upper protective cover is clamped on the sealing cover; the quick connection mechanism comprises a clamping block and a quick connection insertion pipe, a through threaded connection hole is formed in the upper end of the clamping block, one end of the quick connection insertion pipe is in threaded connection with the threaded connection hole, the other end of the quick connection insertion pipe is provided with a clamping head part inserted into the sleeve, a limiting square pipe is arranged on the side face of the sealing cover, and a limiting head clamped and embedded with the limiting square pipe is arranged at the lower end of the clamping block; the sealing cover is further provided with a separation assembly for pushing the quick-connection insertion pipe out of the sleeve. The sleeve and the rapid connecting mechanism can be rapidly communicated, the whole conveying process is in a sealed state, refrigerant oil in the tank body is directly conveyed into the automobile air conditioner maintenance machine under the condition that the refrigerant oil does not make contact with outside air, and the situation that the refrigerant liquid is polluted by dust is avoided.

The invention relates to the technical field of aluminum pipe oil injection, and discloses a heat exchanger aluminum pipe pre-oil injection process and oil injection equipment. Oil injection connectors are evenly distributed on the top of a protection box, air blowing connectors fixed to the top of the protection box are arranged between every two adjacent oil injection connectors, and oil injection heads corresponding to the oil injection connectors are evenly distributed on the rear side wall of the protection box; blowing heads corresponding to the blowing connectors are evenly distributed on the rear side wall of the protection box, each set of oil injection connectors are connected with an oil injection tank through an oil injection pipe, each set of blowing connectors are connected with an air conveying pipe through an air blowing pipe, volatile oil carries lubricating oil to enter an aluminum pipe, only effective lubricating components are reserved after volatilization, a stable lubricating film is built before pipe expansion, and the lubricating effect is improved. The tooth-shaped change rate of the inner wall of the aluminum pipe is reduced from 31% to 11%, the risk that the expansion head adheres to aluminum is remarkably reduced, the tooth-shaped structure is protected, the traditional expansion pipe oiling procedure is omitted, and the machining efficiency is improved.

The invention relates to the field of bearing production equipment, in particular to a full-automatic bearing assembling system. The assembling system comprises a product horizontal conveying line, a bearing carrier, a bearing inner and outer ring feeding mechanism, a steel ball delivery mechanism, a bearing inner ring pushing mechanism, a bearing detection mechanism, a bearing oil injection mechanism and a bearing sorting mechanism. The product horizontal conveying line is matched with the bearing carrier to horizontally convey a bearing, an outer ring and an inner ring of the bearing are put into the bearing carrier through the bearing inner and outer ring feeding mechanism, steel balls are fed into the bearing inner ring pushing mechanism through the steel ball feeding mechanism, the steel balls are fed into the bearing through the bearing inner ring pushing mechanism, and the bearing inner ring pushing mechanism pushes the steel balls into the bearing. And assembling the inner ring, the outer ring and the steel balls of the complete bearing. And the bearing detection mechanism is used for detecting whether the bearing is assembled or not. And the bearing sorting mechanism is used for distributing qualified bearing products and unqualified bearing products. According to the bearing assembling device, full automation of bearing assembling is achieved, and the working efficiency is improved.

The utility model discloses a batch oiling device for bearing production, which belongs to the technical field of bearing production and comprises a workbench, the top of the workbench is fixedly connected with a fixed plate, and the top of the workbench is slidably connected with a movable clamping plate. According to the batch oil injection device for bearing production, by arranging a movable rod, a fixed block, a spring, a movable clamping plate, a square hole and a square groove, when the device is used, a bearing body is placed in a circular groove in the fixed clamping plate, after the circular groove in the fixed clamping plate is filled, a circular ring is pulled and rotated, so that the fixed block is in a vertical state, and when the circular ring is loosened, the bearing body is fixed. According to the device, the movable clamping plate is limited, so that the movable clamping plate cannot be pushed by the spring, the movable clamping plate does not need to be kept in a state all the time by hands of a person, the working efficiency is improved, and the working efficiency is improved. Therefore, batch oil injection of the bearing body is facilitated.

A portable oil pump with a charging function includes a main unit, an oil pumping pipe, a pump body, and an oil outlet pipe. The oil pumping pipe is connected to the main unit. The oil outlet pipe is in communication with the oil pumping pipe. The pump body is arranged inside the oil pumping pipe. The main unit is equipped with a circuit board, a battery, and a power interface. The battery is a rechargeable battery. A charging unit, a main control unit and a driving unit are integrated on the circuit board. The power interface is used for connecting to a first power signal and transmitting the connected first power signal to the charging unit. The charging unit is used for converting the first power signal into a second power signal for charging the battery.

The invention relates to the technical field of bearing grease injection and homogenization, in particular to a bearing grease injection device. Comprising a grease injection table and a grease injection frame on the upper surface of the grease injection table. The grease injection frame is downwards connected with a grease injection box through an air cylinder. The grease injection box is communicated with a grease barrel through a material pipe; the lower surface of the grease injection box is fixedly connected with a fixed disc through a connecting rod; the dumbbell sleeves can be driven to get close to or get away from the fixing blocks along the upper sliding grooves in the rotating process of the rotating disc, under the condition that the dumbbell sleeves get close to or get away from the fixing blocks synchronously, the radial positions of the dumbbell sleeves on the fixing disc can be decreased or increased synchronously, and the grease injection heads can move along with movement of the dumbbell sleeves; in this way, the radial positions of the multiple grease injection heads on the fixing disc are adjusted, then multi-point simultaneous grease injection of bearings with different diameters is achieved, and universality is high.

The utility model discloses a ball head rod grease injection quantity automatic weighing device which comprises a supporting table, a working table rotationally arranged on the supporting table and a grease injection component arranged on the supporting table, the working table is rotationally provided with a clamping jaw table, a containing groove used for containing a ball seat is formed in the clamping jaw table, and the ball seat is arranged in the containing groove. The clamping jaw table is movably provided with a plurality of abutting claws abutting against the head of the ball seat, and the bottom of the containing groove is further provided with a weight detector. The weight detector is arranged at the bottom of the ball seat, the ball seat can be weighed in the grease injection process, the ball seat enters the next procedure after the weight of lubricating grease meets the requirement, and therefore the grease injection amount is kept within the qualified range. In this way, the percent of pass of grease injection can be increased, and therefore the overall production efficiency of products is improved.

The utility model relates to the technical field of mechanical lubricating oil equipment, and provides an oil injection device for machining of a worm and gear speed reducer, the oil injection device comprises a speed reducer box, a transmission shaft is rotatably connected to the interior of the speed reducer box, and an oil injection mechanism is arranged in the speed reducer box. The motor is started while the worm gear and the worm are started, the half gear is meshed with the rack, so that the rack drives the extrusion plate to apply pressure to oil in the oil injection tank, the oil is stressed to be sprayed out through the spraying plate, and lubricating oil is injected into a transmission part of the worm; according to the technical scheme, the rack is driven to reset through the elasticity of the reset spring, so that the oil injection tank stops supplying oil, the oil injection tank indirectly discharges oil through the half gear rotating continuously, lubricating oil is prevented from being accumulated at the first position of the worm, and the technical problem that in the related technology, the worm gear and the worm cannot be continuously lubricated is solved.

The utility model relates to the technical field of mechanical engineering, and discloses a lubricating oil raw material filling machine with a leakage-proof structure, which comprises a bottom plate, an oil drum is arranged in the middle of the top end of the bottom plate, hollow covers are fixedly connected to the left side and the right side of the front end of the bottom plate, and fixing rods are fixedly connected to the top ends of the hollow covers. A mounting plate is fixedly connected between every two adjacent fixing rods, an oil pump is fixedly connected to the front side of the mounting plate, one end of the oil pump communicates with a hose, the other end of the hose communicates with the oil drum, the other end of the oil pump communicates with a filling port, and fixing blocks are fixedly connected to the left side and the right side of the outer wall of the filling port. According to the device, the movable plate moves through abutting to control rotation of the oil outlet cover so as to achieve opening and closing of filling, the leakage risk is reduced, the reliability of the device is improved, and oil barrels of different specifications can be more firmly fixed through the positioning clamp due to stretching and retracting of elastic potential energy of the spring telescopic rod and tightening of the binding belt through the rotating wheel.

The utility model relates to the technical field of gearbox oiling, in particular to a gearbox oiling device which comprises a carrying table, an oiling piece, a moving assembly and a guide plate, and the moving assembly comprises a driving piece and a first sliding rail. Through the cooperation of the first sliding rail and the driving piece which are crossed with each other, the oil injection piece moves along a certain range, then the movement of the oil injection piece is limited through the groove in the guide plate, and the oil injection piece finally moves to correspond to the gear box. In the process, only one driving piece is needed for driving, and compared with driving through a plurality of driving pieces in the prior art, energy consumption and cost are reduced.

An engine oil system includes an oil tank and an access port cover. The oil tank includes a wall forming an internal oil cavity. The wall forms an access port extending along an access port axis through the wall. The access port cover is mounted on the wall and seals the access port. The access port cover includes a cover body and a packing ring. The cover body extends between and to an inner axial end and an outer axial end. The cover body forms a cover lip at the outer axial end. The cover lip extends circumferentially about the access port axis. The cover lip extends radially outward and axially outward, relative to the access port axis, along a lip axis to the outer axial end. The packing ring forms a fluid seal between the cover body and the wall within the access port.

The invention relates to the technical field of oil cleaning, in particular to a gearbox oil cleaning system which comprises an oil suction structure, a filtering structure and an oil return structure. The oil suction structure comprises a main rod, a pull rope, an oil suction assembly and an oil pump, the oil suction assembly is rotationally connected to the main rod, the pull rope is connected with the oil suction assembly, the pull rope is pulled to enable the oil suction assembly to rotate from a first position to a second position, and the oil suction assembly located at the second position can stretch into the gearbox; the oil suction assembly comprises an oil suction pipe, the oil suction pipe is communicated with the oil pump, one end of the oil suction pipe extends into the gear box, the oil suction pipe located in the gear box is provided with an oil suction small hole, and the oil pump is used for enabling oil and impurities in the gear box to be sucked into the oil suction pipe through the oil suction small hole. An inlet of the filtering structure communicates with the other end of the oil suction pipe, and the filtering structure is used for filtering impurities in oil. The oil return structure comprises an oil return pipe, one end of the oil return pipe communicates with an outlet of the filtering structure, and the other end of the oil return pipe is used for stretching into the gearbox.

The utility model provides automatic grease injection equipment for a hub bearing, which relates to the technical field of hub bearings and comprises an integral structure and moving structures, and the moving structures are positioned at the front and rear positions of two sides of the bottom of the integral structure; the integral structure comprises a bottom plate, the top of the bottom plate is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with an oil storage tank, and the center of the inner top of the oil storage tank is rotationally connected with a rotating shaft. The rotating shaft can rotate through the servo motor, and the rotating shaft drives the stirring rod and the heating belt to rotate, so that the heating belt and the stirring rod can stir grease and additives in the grease storage tank, the grease and the additives are mixed more uniformly, and the situation that the grease and the additives need to be pre-stirred in advance is avoided; and the grease can be heated, so that the problem that the grease needs to be heated before being injected is solved.

The invention discloses a vacuum pump oiling device. The device comprises an oil tank, the head end of the oil tank is provided with an oil filling port, and the tail end of the oil tank is connected with an oil outlet pipeline; during oil filling, the oil outlet of the oil outlet pipeline is connected with the oil filling port of the oil filling pipeline of the oil-filled device; the vacuum pump is connected with the oil tank through an inflation pipeline and used for inflating and pressurizing the oil tank so that the pressure value in the oil tank can be larger than that in the oil-filled device, and therefore oil in the oil tank can automatically enter the oil-filled device due to the pressure difference. The oil tank is pressurized through the vacuum pump, so that oil in the oil tank is automatically injected into the oil-filled device through pressure difference, and the problem of manual oil filling of a large motor cavity in the prior art is solved. The device is simple in structure, and the working efficiency is improved.

The utility model discloses a full-automatic water pump bearing weighing, grease injection, capping and grease homogenizing machining device which comprises a machine body, a grease injection mechanism and a quantitative control mechanism, a mounting table is arranged at the top end of the machine body, a conveying belt is arranged at the top end of the mounting table, and a bearing part is placed at the top end of the conveying belt. And protective fences are arranged on the two sides of the top end of the mounting table. According to the full-automatic water pump bearing weighing, grease injecting, capping and grease homogenizing machining device, by arranging the grease injecting mechanism and the quantitative control mechanism, when lubricating grease is injected into a bearing part, the lubricating grease in a grease barrel is conveniently pumped out through a quantitative control valve in the quantitative control mechanism and conveyed into a grease transfer table through a transfer pipe; the lubricating grease is output to the grease injection disc through the output pipe at the bottom, the lubricating grease is injected into the bearing part through the grease injection heads, and meanwhile the grease injection disc and the grease injection heads can be conveniently and rapidly disassembled, assembled and replaced through fixing nuts in the grease injection mechanism according to the size and specification of the bearing part.

The utility model discloses an oil injection mechanism of a gear reducer, which comprises an injection gun body, an oil injection pipe, a driving motor, a screw rod and a spiral pipe cavity, one side of the injection gun body is provided with a grip, and a trigger switch is installed for controlling the starting and stopping of the driving motor. An injection conveying pipe is fixedly installed in the oil injection pipe, a spiral pipe cavity is formed in the inner side of the oil injection pipe, the spiral rod is rotationally installed on the injection gun body, and the periphery of the spiral rod abuts against and is meshed with the inner wall of the spiral pipe cavity to form a sealed conveying channel. The single-screw pump conveying principle is adopted, a plurality of independent sealed conveying cavities are formed in the spiral pipe cavity through eccentric rotation of the spiral rod, stable and continuous lubricating oil conveying is achieved, and compared with a traditional piston pump or straight pipe gravity oil injection mode, the flow uniformity is improved, lubricating oil leakage is reduced, energy consumption is reduced, and the service life of the lubricating oil pump is prolonged. The utility model is suitable for the fields of gear reducers, industrial equipment lubricating systems and the like.

The utility model relates to the technical field of lubricating oil filling, and discloses a subway train lubricating oil intelligent filling device which comprises a cabinet body, an oil drum is installed at the bottom end in a cabinet body cavity, and a serial port display screen, a self-reset switch and an emergency switch are arranged at the top end of the cabinet body. The execution module comprises a direct-current brushless motor and a bidirectional gear pump; the control module comprises a single chip microcomputer and a double-gear rotary switch; the power module comprises a graphene lead-acid battery pack, a double-control air switch and a power adapter; and a signal acquisition module. The signal collecting module is used for collecting information of all the modules, the power module is used for supplying power, the control module is used for operating and controlling equipment, the execution module is used for controlling in and out of lubricating oil, all the modules are matched with one another through the reasonable structural design, and the device is small in structure, high in oil injection efficiency and high in use convenience.

The utility model provides a full-automatic oil seal grease injection machine, which belongs to the technical field of grease injection machines, and comprises a stainless steel grease storage barrel, the pressurizing cylinder is fixed at the top of the stainless steel grease storage barrel; the grease injection mechanism is arranged on the stainless steel grease storage barrel and used in cooperation with the pressurizing air cylinder, the grease injection mechanism is used for conveying grease, and specifically, the grease injection mechanism further comprises a conveying assembly arranged on the stainless steel grease storage barrel; the fixing assembly is arranged on the stainless steel grease storage barrel and used in cooperation with the conveying assembly. The processing mechanism is arranged on the grease injection mechanism; the control mechanism is arranged on the machining mechanism and used in cooperation with the grease injection mechanism. The grease injection gun head for grease injection is convenient to disassemble, so that the grease injection gun head is convenient to clean, the overall grease injection efficiency of the grease injection machine is further improved, the models and specifications of the grease injection gun head can be adaptively replaced according to different models and specifications of oil seals, and the overall limitation of the grease injection machine is effectively reduced.

The utility model relates to a kind of lubricating grease filling devices of speed reducer, including processing platform and liquid injection gun, processing platform is connected with disc and slide rail, disc axle is connected in the top surface of processing platform, and slide rail is interval arranged below disc;The left and right sides of slide rail are equipped with sliding slot, and top surface is equipped with multiple positioning holes, and sliding block is slidably connected on sliding slot, and horizontal rotating shaft is connected between sliding block, and horizontal supporting rod is connected in horizontal rotating shaft axle, and the bottom surface of horizontal supporting rod is equipped with inserting rod, and vertical supporting rod is connected in horizontal supporting rod, and liquid injection gun is connected in the top of vertical supporting rod, and the liquid outlet of liquid injection gun is aligned above disc;It is sequentially connected by rotating shaft, horizontal supporting rod, vertical supporting rod and liquid injection gun, instead of artificial holding liquid injection gun, horizontal supporting rod is moved along sliding slot by pulling, the size of the circular track of injection lubricating grease is adjusted, the coverage of injection port position to disc area is increased, it is convenient to inject liquid to the speed reducer of different size cavity, and the uniformity of injection is improved.

The lubricating oil filling device of the oil exploitation equipment comprises a grease gun body, a connecting pipe is fixedly arranged on the surface of the grease gun body, a filling opening is fixedly formed in the end, away from the grease gun body, of the connecting pipe, and a flushing mechanism used for cleaning the grease opening is arranged at the lower end of the connecting pipe. The flushing mechanism comprises a fixing frame, a high-pressure spray head, a connector, a connecting hose and a pump body, the fixing frame is fixedly arranged on one side of the connecting hose, the high-pressure spray head is fixedly arranged at the lower end of the interior of the fixing frame, the connector is movably arranged on one side of the surface of the high-pressure spray head in a screwed mode through threads, and the connecting hose is fixedly arranged at one end of the surface of the connector. The grease gun is good in using effect, the flushing and cleaning mechanism is additionally arranged on a traditional grease gun, the grease gun can effectively adapt to the severe environment where oil exploitation equipment is applied, dirt on the surface of a grease opening can be rapidly flushed away, and follow-up grease filling is facilitated.

The present application belongs to the technical field of lubrication regulation of rolling bearing, in particular to a kind of lubrication state regulation method of rolling bearing, the noise, vibration, temperature rise, torque etc. lubrication state that appears in the operation process of rolling bearing is monitored in real time, according to monitoring result and lubrication failure mode, real-time supplement lubricant, when supplementing, grease and lubricating oil are alternately supplied, to repair the lubricating deposit film and lubricating oil consumed in the process of lubrication, make rolling bearing long-term in effective lubrication state, avoid abnormal shutdown, at the same time, according to monitoring result, the service life of rolling bearing can be effectively estimated;In view of the film forming mechanism and evolution recession process analysis of grease, the lubrication mode of alternately supplying grease and lubricating oil is proposed for centralized lubrication, the operation process is simple, the principle is scientific and reliable, and it is verified that the lubricant can be in long-term supply and loss imbalance state in the track.

This invention discloses an integrated airtightness testing and quantitative oil injection device and its usage method. The device includes a frame, on which are mounted a mandrel clamping assembly, an airtightness testing assembly, an oil injection assembly, a vacuuming assembly, and a control system. The mandrel clamping assembly includes a cylinder and a mandrel, with the free end of the piston rod at the lower end of the cylinder connected to the upper part of the mandrel. The mandrel includes a column, within which vertical gas channels and liquid channels are spaced apart. The gas channels form inlet and outlet holes on the lower end face of the column, and the liquid channels form oil injection holes on the lower end face of the column. The lower end face of the column is a stepped surface. A first threaded hole and a second threaded hole are formed downwardly inclined from the outer periphery to the inner side of the middle of the column. The inner side of the first threaded hole communicates with the gas channel, and the inner side of the second threaded hole communicates with the liquid channel. This invention is a special tooling for processing vehicle chassis load-bearing wheels, realizing integrated and automated airtightness and oil injection operations.

The invention discloses a sintering pallet wheel fat liquoring fault grading method and system, electronic equipment and a storage medium, and the method comprises the following steps: S1, collecting actual pallet chain data information, and obtaining a pallet chain array; s2, obtaining a trolley number and a serial number of an initial trolley; s3, the initial trolley is searched and recognized, after the initial trolley is recognized, each passing wheel is recognized, positioned and numbered, an automatic greasing device is used for conducting automatic greasing on the wheels, and whether greasing succeeds or not is judged; and S4, according to the current fat liquoring judgment result and the historical fat liquoring judgment result of each wheel on each trolley, the current fault grade of each wheel is obtained. The system can replace manual work to achieve automatic identification, positioning, recording and analysis, through automatic fat liquoring and accurate fault grading, the fat liquoring states of hundreds of wheels can be monitored in real time, the wheels with fat liquoring faults can be identified in time and graded, and workers can conveniently process serious faults in priority.

The utility model discloses an oil injection device for chip cooling fan production, and belongs to the technical field of oil injection devices. The oil injection device for chip cooling fan production comprises an oil tank, a pressure tank is arranged at the top end of the oil tank, the pressure tank comprises a tank body, the top end of the oil tank communicates with the tank body, a piston plate is slidably connected into the tank body, and a lead screw is in threaded connection with the center of the piston plate; the top end of the lead screw is rotationally connected with the top end of the interior of the tank body, a limiting rod is connected to one side of the piston plate in a penetrating mode, the top end of the limiting rod is connected with the top end of the interior of the tank body, the bottom end of the tank body is sleeved with a sealing plate, and the four corners of the sealing plate are in threaded connection with bolts correspondingly. The sealing plate is connected with the top end of the oil tank through bolts, a driving motor is installed at the top end of the pressure tank, and the output end of the driving motor is in transmission connection with the top end of the lead screw.

The utility model discloses an oiling device for chenille yarn production, and relates to the technical field of textile machinery. The device comprises an oiling mechanism, an oiling barrel is arranged above the left side of a bottom plate, a movable plate is arranged in the oiling barrel, a sealing sleeve in interference fit with the oiling barrel is fixed to the peripheral wall of the movable plate, an electric push rod is fixed to the middle of the upper wall of the movable plate, and a pressure sensor is fixed to the lower wall of the oiling barrel; an oil pumping mechanism is arranged on the right side of the oiling barrel and comprises a waste oil barrel, a conveying pump is fixed to the left side of the upper wall of the waste oil barrel, a pen type motor is arranged on the right side of the conveying pump, a rotating plate is fixed to a power output shaft of the pen type motor, and bristles are fixed to the edge of the front wall of the rotating plate. Through the cooperation of the electric push rod and the pressure sensor, oil replacement does not need to be operated manually and effortlessly, meanwhile, the oil amount can be controlled, the brush hair is driven by the pen type motor to rotate so that oil sludge can be cleaned, and waste oil is pumped through the conveying pump so that the oil replacement efficiency can be improved.

The invention relates to the technical field of railway bolt protection, in particular to a rail protection component which is used for protecting railway bolts in railway fasteners and comprises a component box, a first rotating seat is rotatably connected to the upper side in the component box, a sliding groove is formed in the first rotating seat, and two sliding blocks are slidably connected into the sliding groove. First clamping shafts located in the component box are fixed to the lower ends of the two sliding blocks, and a filling base is fixed to the front end of the component box. According to the invention, quantitative grease is preloaded by adopting the flexible and breakable casing bag, so that the filling amount each time is ensured to be accurate and consistent, automatic release can be realized when the bolt is screwed in, the assembly process is simplified by matching with the design of the modular component box, the openable side cover and the bottom cover are convenient to maintain, the whole structure has convenience of automatic operation and reliability of mechanical transmission, and the production efficiency is improved. And the adaptive design of the filling seat and the clamping seat ensures that the grease bag is undamaged to discharge, so that the material waste is reduced, the large-scale construction efficiency is remarkably improved, and stable and long-acting anti-corrosion protection is provided for railway bolts.

The maintenance-free hub bearing grease injection tool comprises a frame body and a lower seat, the lower seat is connected with the frame body, a grease injection cavity is formed in the lower seat in a hollow mode and communicated with a piston groove, the grease injection cavity is filled with lubricating grease, a plurality of insertion nozzles are arranged on the bottom wall of the lower seat, and large grease outlet holes are formed in the insertion nozzles. An upper cover which is used for being inserted into the piston groove and extruding the lubricating grease in the grease injection cavity to enable the lubricating grease to be discharged to the small end of a roller of an external hub bearing to be subjected to grease injection through the multiple insertion nozzles is movably arranged on the frame body, and a driving structure is arranged on the frame body; the top wall of the frame body is provided with a connecting structure which is used for being detachably connected with the output end of external hydraulic equipment so as to drive the frame body to move to enable the lower base to be inserted into an external hub bearing to be greased when the external hydraulic equipment is started. The maintenance-free hub bearing grease injection tool solves the problems that lubricating grease is difficult to accurately feed to the small end of a roller in the grease injection process, so that lubrication is insufficient, grease distribution is uneven in the grease injection process, and grease is prone to leakage in the grease injection process in a traditional maintenance-free hub bearing grease injection tool.

The application belongs to the technical field of bearing processing, and particularly relates to a ball bearing and a preparation process thereof. The bearing comprises an outer ring, an inner ring, a limiting ring and balls. The bearing is tightly packaged through a specific packaging structure. The preparation process covers the steps of outer ring and inner ring processing, ball manufacturing, limiting ring processing and assembly lubrication. In the assembly process, an automatic assembly device is adopted to realize automatic injection of low-friction lubricating grease and precise installation of a closed ring. The device improves assembly efficiency and ensures the internal cleanliness and lubrication effect of the bearing through the synergistic effect of a turnover structure, an oil injection structure and an installation structure. The patent effectively solves the problems of low efficiency and easy pollution in the traditional assembly process, improves the performance and service life of the ball bearing, and is suitable for high-precision transmission fields such as hollow cup motors.