187 results about "Needle roller bearing" patented technology

The speed reducer gear shifting shaft structure comprises a gear shifting shaft, a gear shifting gear, a needle roller thrust bearing, a pre-tightening assembly, a sliding sleeve and a gear shifting fork, the gear shifting gear, the sliding sleeve and the pre-tightening assembly are arranged on the gear shifting shaft, the gear shifting gear is arranged on the gear shifting shaft through the needle roller thrust bearing, and the pre-tightening assembly is arranged on the gear shifting shaft through the sliding sleeve. The pre-tightening assemblies make contact with the gear shifting gears correspondingly, and thrust of the gear shifting gears is pre-tightened through the pre-tightening assemblies. Sliding friction of the end face of the gear shifting gear is converted into rolling friction through the needle roller thrust bearing, and end face abrasion is greatly reduced. And due to the constant pre-tightening force, early failure caused by too tight or too loose bearings is avoided, the reliability of the speed reducer is remarkably improved, and the service life of the speed reducer is remarkably prolonged.

The invention relates to the technical field of punching outer ring needle roller bearing processing, in particular to a punching outer ring needle roller bearing one-time needle mounting detection machine which comprises a rack, a retainer feeding mechanism, a needle mounting workbench, a needle mounting mechanism, a transfer mechanism, a punching outer ring feeding mechanism, a punching outer ring assembling workbench and a discharging mechanism, and the retainer feeding mechanism, the needle mounting workbench, the needle mounting mechanism, the transfer mechanism, the punching outer ring feeding mechanism, the punching outer ring assembling workbench and the discharging mechanism are arranged on the rack. The needle mounting workbench comprises a rotating disc, a rotating disc driving assembly for driving the rotating disc to rotate and a plurality of rotating edge searching type jacking tools which are arranged on the rotating disc and can achieve positioning of the holder. According to the one-time needle mounting detector for the punched outer ring needle roller bearing, the specially designed rotary edge searching type jacking tool is matched with all the mechanisms, the assembly efficiency of the punched outer ring needle roller bearing is greatly improved, meanwhile, in the assembly process, the needle roller can be prevented from being disengaged from the interior of the retainer, the yield is greatly improved, and therefore the product quality is guaranteed, and the production cost is reduced. And the production cost is reduced.

The application discloses a silicon steel sheet laminating and pressing equipment based on self-control pressure and relates to the technical field of silicon steel sheet manufacturing equipment. The equipment comprises a C-shaped frame, a pressure conduction block and a double-acting hydraulic cylinder. A cross-shaped oil guide groove is milled at the bottom end of the outer wall of the pressure conduction block. Two rows of needle roller bearings are symmetrically installed on the side surface of the outer wall of the pressure conduction block. A laminating pressing plate is fixedly installed at the bottom end of the outer wall of the pressure conduction block. An annular oil cavity is formed at the top end of the outer wall of the laminating pressing plate. The annular oil cavity is communicated with the oil guide groove. A pressure sensing film is fixedly installed at the bottom end of the outer wall of the laminating pressing plate. A strain grid is etched at the rear end of the outer wall of the pressure sensing film. The strain grid etched at the pressure sensing film can sense the pressing pressure, the real-time detection and automatic closed-loop adjustment of the pressing pressure are realized, the problem that the pressure fluctuation of the pressing equipment is large and the laminates are deformed due to overpressure or loose due to insufficient pressure caused by the adjustment depending on manual experience is solved, and the compactness, flatness and core performance consistency of the laminates are improved.

The plunger assembly comprises a plunger, a spring pin and the needle roller bearing, the needle roller bearing comprises an outer ring and a needle roller, a shaft core is arranged in the center of the needle roller bearing, the needle roller is arranged between the shaft core and the outer ring, fixing grooves are formed in the two sides of the plunger, and the spring pin is arranged in the fixing grooves. The two sides of the shaft core are inserted into the fixing grooves, a spring pin is further arranged at one end of the shaft core, a needle bearing cavity for the needle bearing to be installed is formed in the plunger, when the needle bearing rotates at a high speed, a liquid dynamic pressure oil film is formed between the needle bearing and the needle bearing cavity, and the liquid dynamic pressure oil film provides supporting force for the needle bearing. The shaft core and the liquid dynamic pressure oil film jointly support the downward pressure of the needle bearing, and the needle bearing is characterized in that the liquid dynamic pressure oil film can provide supporting force, the liquid dynamic pressure oil film and the shaft core jointly bear the downward pressure of the needle bearing, frictional resistance is reduced, mechanical efficiency is improved, part abrasion is reduced, and meanwhile the supporting stability of the needle bearing is enhanced.

The invention relates to the technical field of automobile accessories, and discloses a high-supporting-performance separated steering intermediate shaft sheath which comprises an upper metal plate, a lower metal plate, a rubber pad and a needle bearing, the rubber pad penetrates through a hole of the lower metal plate through a rubber staple bolt structure to be clamped on the upper metal plate, and the needle bearing is assembled in a rubber ball head in an interference mode. The needle roller bearing comprises an elastic outer ring, a retainer, a needle roller and second lubricating grease, a bearing cover plate is fully coated with the grease and placed into a bearing ring, the bearing cover plate and the other bearing cover plate are connected in a clamped mode and installed in a rubber ball head in an interference fit mode, and the rubber ball head is in interference fit with an upper metal plate and a lower metal plate. According to the separated steering intermediate shaft sheath assembly, the metal plate is fixed to the automobile dash panel, the rubber pad is sealed with the dash panel, the needle bearing and the bearing ring are in interference fit with the automobile intermediate shaft, the rotating function of the intermediate shaft is achieved, and the steering intermediate shaft sheath with the high supporting performance has the advantages of being easy to assemble, economical, practical, dustproof, waterproof, high in supporting performance and the like. The rotation is smooth; and the supporting performance on the intermediate shaft is high.

The invention discloses an automatic assembly process of an assembled crankshaft. The process comprises the following steps: cleaning and drying a left half shaft, a right half shaft, a crank pin and a connecting rod; the connecting rod, the crank pin and the needle bearing are conveyed to a connecting rod assembly assembling station after being selected and matched, and connecting rod assembly assembling is conducted; the left half shaft is conveyed to a discharging position, and the right half shaft is conveyed to a woodruff key press-fitting station for woodruff key press-fitting and then conveyed to the discharging position; the left half shaft, the right half shaft and the connecting rod assembly are conveyed to a crank pin press-fitting station, crank pin press-fitting is conducted, and an assembled crankshaft is formed; the assembled crankshaft and the oil cover are conveyed to an oil cover press-fitting station, and oil cover press-fitting is conducted; the assembled crankshaft and the bearing are conveyed to a bearing press-fitting station for bearing press-fitting; the assembled crankshaft and the chain wheel are conveyed to a chain wheel press-fitting station, and chain wheel press-fitting and detection are conducted; the assembled crankshaft gear is conveyed to a gear press-fitting station to be subjected to gear press-fitting; the assembled crankshaft is detected after being straightened; and if the assembly type crankshaft is qualified, soaking the assembly type crankshaft with oil and then conveying the assembly type crankshaft to a storage frame, otherwise, conveying the assembly type crankshaft out of a production line.

The utility model discloses a large cartridge charging machine clamping machine with a punching failure rate reducing structure, and relates to the technical field of charging machine clamping machines, the large cartridge charging machine clamping machine comprises a main fixing frame, a top electric cylinder is installed at the top end of an air cylinder fixing plate, a gantry moving frame is arranged in the main fixing frame, and a folding claw arm is arranged on the right side of the main fixing frame. According to the large cartridge charging machine clamping machine with the clamping failure rate reducing structure, the main fixing frame, the top electric cylinder, the first pin shaft, the first needle bearing, the second pin shaft, the second needle bearing, the hinge seat and the like are arranged, and the folding claw arms, the folding claw heads, the fixing claws and the claw grooves are arranged; the folding claw arm swings downwards by taking the second pin shaft as the circle center under radial thrust and is folded with the fixed claw, the folding claw head is matched with the fixed claw and the claw groove in shape and size, the folding claw head and the fixed claw are tightly folded, and the claw clamp is smoothly opened and closed; through the improvement of the structure, the failure rate of the card punching mechanism is reduced, and the problem that the bearing of the card punching mechanism is easy to damage is solved.

The utility model relates to automatic detection technical field discloses a kind of needle bearing ring sorting machine, including rack, the outer wall top of the rack is fixedly connected with support frame, the outer wall of the support frame is provided with push mechanism, the outer wall top of the rack is fixedly connected with fixed base, the outer wall of the fixed base is provided with conveying mechanism, the outer wall of the rack is fixedly connected with connecting plate, the outer wall of the connecting plate is provided with feeding mechanism, the outer wall top of the rack is fixedly connected with detection table, the inner wall of the rack is provided with material receiving mechanism, the outer wall front side of the connecting plate is provided with self-adapting mechanism.In the utility model, workpiece in material box moves to feeding platform area under the push of other workpieces inside feeding box, workpiece is moved to bearing detector to detect and judge workpiece inner diameter error, then servo motor drives discharge pipe to rotate to above corresponding discharge box, the whole mechanism realizes the automation of process, improves detection efficiency.

The utility model discloses a roller pin spinning roller structure, which comprises a spinning roller shaft, the spinning roller is arranged on the spinning roller shaft in a sleeving manner; the rolling needles are arranged between the rotating wheel shaft and the rotating wheel, and the rolling needles are sequentially arranged along the periphery of the rotating wheel shaft; the glands are pressed at the two ends of the spinning roller; and the needle bearing is arranged between the gland and the spinning roller. The rolling needle spinning roller structure is simple in structure and reasonable and compact in design, the bearing capacity of the spinning roller structure can be effectively improved, the size of the spinning roller can be effectively reduced under the condition of the same bearing capacity, the service life of the spinning roller can be effectively prolonged, and therefore cost can be effectively saved.

The utility model discloses a reverse gear intermediate shaft positioning structure for a gearbox of a light bus, which solves the problems that the structure is complicated, the disassembly and assembly are inconvenient, and a nut is loosened and falls into a gearbox in the prior art, and comprises a gearbox shell, a rear cover shell and a reverse gear intermediate shaft, the reverse gear intermediate shaft comprises a positioning section, a bearing mounting section and a limiting section which are connected in sequence, the diameter of the positioning section, the diameter of the bearing mounting section and the radial minimum width of the limiting section are sequentially increased; one end of the positioning section is inserted into a counter bore of the transmission shell, and a reverse gear thrust washer is sleeved on the positioning section; the bearing mounting section is sequentially sleeved with a needle bearing and a reverse intermediate gear; one end of the reverse-gear thrust washer abuts against the transmission shell, and the other end of the reverse-gear thrust washer abuts against the end face of the reverse-gear intermediate gear. The end of the limiting section is inserted into a groove of the rear cover shell, the groove is matched with the radial section of the limiting section in shape, and the limiting section abuts against the end face of the intermediate gear.

The utility model relates to the technical field of machine tool machining, in particular to a slotting head which comprises a cutter handle body shaft, a box body and a slotting cutter rod shaft, the cutter handle body shaft is installed on the end face of a machine tool spindle unit, a cutter handle bearing is installed on the outer surface of the cutter handle body shaft, and the cutter handle body shaft is connected into the box body through the cutter handle bearing. A cylindrical cam is fixedly connected to one end of the knife handle body shaft, a cam groove is formed in the knife handle body shaft, a knife inserting rod is detachably connected into the knife inserting rod shaft, a connecting shaft is fixedly connected to one end of the knife inserting rod, and a needle bearing is installed on the outer surface of the connecting shaft. The needle bearing moves in the cam groove of the cylindrical cam to drive the connecting shaft to move, the connecting shaft is connected with the needle bearing and the slotting tool rod shaft, the needle bearing transmits rotation motion and power of the cylindrical cam to the slotting tool rod shaft, and therefore the cylindrical cam is driven by the tool handle body shaft to rotate. The effect of changing rotary motion into reciprocating rectilinear motion is achieved through a cam groove of the cylindrical cam.

The utility model relates to the technical field of bearings, and provides a rubber combined needle roller bearing for an automobile steering system, which comprises a stamping outer ring, a needle roller body is arranged inside the stamping outer ring, a retainer is arranged outside the needle roller body, a bearing outer sleeve is arranged outside the stamping outer ring, and the bearing outer sleeve is sleeved outside the stamping outer ring. The stamping outer ring is fixedly connected with the bearing outer sleeve, an outer sleeve framework is annularly arranged at the corner of one side of the bearing outer sleeve in a sleeving mode, the bearing outer sleeve is attached to the outer portion of the stamping outer ring, and a connecting frame is fixedly connected to one side of the outer sleeve framework. Damping and noise reduction can be effectively achieved, corrosion resistance and abrasion resistance are improved through the arranged outer sleeve framework, the outer sleeve framework is tightly combined with the bearing outer sleeve, and a stable supporting structure is provided.

The utility model discloses a cross shaft universal joint with good sealing performance, and belongs to the technical field of universal joints. Comprising a universal joint body and a sealing mechanism, the universal joint body comprises a pair of universal joint forks and a cross shaft, connecting grooves are formed in the ends, close to each other, of the universal joint forks, needle bearings are arranged at the four ends of the cross shaft in a sleeving mode, the sealing mechanism comprises fixing grooves formed in the two sides of the connecting grooves, and the needle bearings are embedded in the fixing grooves. A first sealing piece is arranged at one end of the fixing groove, a second sealing piece is arranged at the other end of the fixing groove, and the first sealing piece and the second sealing piece seal the fixing groove; the cross shaft universal joint applied to the good sealing performance can prevent dust, silt, water and other impurities from invading the interior of the universal joint, so that the purpose of prolonging the service life of the universal joint is achieved.

This application discloses a bearing outer ring clamp for machining needle roller bearings, belonging to the field of clamping fixtures. It mainly includes a clamping assembly with an adjustment component. The clamping assembly includes a base, on which two sets of support plates are fixedly mounted, with a certain space between the two sets of support plates. An arc-shaped pressure cap is hinged to each support plate. Support rollers are mounted between the two sets of support plates, and the support rollers can contact the outer ring of the bearing. This bearing outer ring clamp for machining needle roller bearings, through the cooperation of the two sets of support rollers and the arc-shaped pressure cap, allows the bearing to be clamped. Simultaneously, the support rollers can rotate inside the support plates, allowing the bearing on the support rollers to be adjusted. This facilitates processing of different positions of the bearing by the operator and avoids frequent disassembly and re-clamping of the bearing, thereby improving processing efficiency.

The utility model discloses an assembly type crankshaft, including driving crank, driven crank and two balance blocks. The center of two balance blocks all is provided with the installation through -hole, and driving crank, driven crank are inserted in corresponding installation through -hole respectively. Two balance blocks are spaced apart, and are provided with connecting rod needle bearing between. Connecting rod needle bearing is divided into the installation part of middle and the insertion part of both ends. The insertion hole is set up on two balance blocks. The insertion hole eccentricity sets up on the balance block. Two insertion parts on connecting rod needle bearing are inserted in corresponding insertion hole. The utility model discloses through dividing crankshaft into driving crank, driven crank, connecting rod needle bearing and two balance blocks, and through the insertion type assembly between, make crankshaft be combined by multiple independent sections, and effectively solve the problem that integral type crankshaft processes difficultly.

The invention provides an integral track gearbox. The gearbox comprises an input gear shaft assembly, a gear shifting shaft assembly, a speed changing shifting fork assembly, a speed changing shaft assembly, a steering shaft assembly, an idle shaft assembly, a left output shaft assembly, a right output shaft assembly and a gearbox shell. The gear shifting shaft assembly is composed of a gear shifting shaft, a third bearing, a gear shifting main gear, a first-gear gear, a first needle bearing, a first needle bearing inner ring, a first spline housing, a first gear switch, a third-gear gear, a second needle bearing, a second needle bearing inner ring, a first spacer bush, a second-gear gear, a third needle bearing, a third needle bearing inner ring, a second spline housing, a second gear switch, a gear shifting shaft collar and a fourth bearing. Accumulated errors are eliminated, the part installation position precision is improved, and the operation performance is improved; the maintenance efficiency is improved and the maintenance cost is reduced; the strength performance of the gearbox assembly is improved; the failure rate of crawler driving wheel parts is reduced, and the safety performance is improved; machining difficulty of the track driving wheel is reduced, cost is saved, and efficiency is improved.

This utility model relates to a nut anti-loosening structure for a needle roller bearing. The nut anti-loosening structure includes a needle roller bearing, a support shaft, an anti-loosening washer, and a nut. One end of the support shaft is interference-fitted with the inner ring of the needle roller bearing, and the other end is adapted to the anti-loosening washer. The anti-loosening washer has a D-shaped through hole, through which it is fitted onto the support shaft. The nut is fitted onto the support shaft and abuts against the anti-loosening washer. The solution provided in this application can form a non-circular fit between the D-shaped anti-loosening washer and the support shaft, and replaces "friction anti-loosening" with "mechanical hard limiting," eliminating the need for material deformation or chemical anti-loosening agents. It is particularly suitable for high-load, high-speed, frequent start-stop, or drastic temperature changes, effectively reducing equipment failures caused by nut loosening, improving production efficiency, and is simple in structure, requires no frequent maintenance, is environmentally friendly, and has low cost.

The utility model discloses a power takeoff gear engaging executing mechanism, and belongs to the technical field of power takeoff. The power takeoff gear engaging executing mechanism comprises a power takeoff cover, and the power takeoff cover is provided with an air A piston is arranged in the air cylinder and connected with a thrust bearing, and the thrust bearing is connected with one end of an ejector rod. The other end of the ejector rod is connected with a return spring, the return spring is arranged in the power takeoff power output shaft, a combination ring is arranged on the outer side face of the power takeoff power output shaft and meshed with the power takeoff power output shaft, and the ejector rod, the combination ring and the power takeoff power output shaft are provided with a connecting pin in a penetrating mode. The ejector rod and the combination ring can slide on the power takeoff power output shaft, and the power takeoff power output shaft is connected with the power takeoff power output gear through a needle bearing. According to the power takeoff gear engaging execution structure, the design is simplified, the weight and the size are reduced, and the compactness of the internal structure is improved, so that the production cost is effectively reduced, and the production efficiency is improved.

The utility model belongs to three screw rod pump technical field, specifically discloses a kind of high-performance high-pressure three screw rod pump, including pump body, main screw rod, slave screw rod;The pump body inside has the axial inner cavity being set along axial through, the left end of the pump body, right end is equipped with front end cover subassembly, rear end cover, the left end of the front end cover subassembly is equipped with gland;The main screw rod is coaxially arranged in the axial inner cavity of pump body, and the front end cover subassembly is equipped with the accommodating cavity matched with main screw rod.This utility model provides a kind of high-performance high-pressure three screw rod pump, by setting up needle bearing at slave screw rod high-pressure end, to overcome the drawback of simply relying on lengthening slave screw rod length, increase slave screw rod outer circle area to overcome slave screw rod radial force.The length required by slave screw rod under high-pressure working condition is greatly reduced.The machining difficulty of slave screw rod and pump body is reduced.The pressure resistance range of high-pressure three screw rod pump is greatly improved (from 20MPa to 28MPa).

The utility model discloses a calibration device capable of automatically displaying the detection range of a flame meter, which comprises a turntable positioning seat, a needle bearing in interference fit connection is arranged on the surface of the turntable positioning seat, and a holder motor fixedly connected through a first inner hexagonal cross screw is arranged in a groove of the turntable positioning seat. A rotating disc fixedly connected through a fifth inner hexagonal screw is arranged on a rotor of the holder motor, a copper stud and a damping rotating shaft are further arranged on the rotating disc, a camera module fixedly connected through a first cross round head screw is arranged on the copper stud, and a rotating shaft rod is fixedly connected to the damping rotating shaft. The rotating shaft rod is provided with a laser ranging mounting plate which is fixedly connected through a second cross-shaped round head screw, and the laser ranging mounting plate is provided with a laser ranging module which is fixedly connected through a third cross-shaped round head screw.

The application relates to a needle roller bearing assembling device, and relates to the technical field of needle roller bearings. The assembling device comprises a machine body, an oiling mechanism, a needle placing mechanism, a needle pressing mechanism, a pressing mechanism and a pushing mechanism. The needle placing mechanism comprises a needle placing table provided with a needle placing hole, a needle placing disc rotatably arranged on the machine body and provided with a needle placing groove, a driving assembly for driving the needle placing disc to rotate, a moving table slidably arranged on the machine body, a needle placing pipe connected with a vibrating feeder and used for vertically stacking the needle rollers in the needle placing pipe, and a needle placing assembly used for placing the needle rollers in the inner side of the outer ring. The oiling mechanism is used for applying lubricating grease, the needle placing mechanism is used for extending the needle rollers to the inner side of the outer ring, the needle pressing mechanism is used for pushing the needle rollers to be clamped and installed on the outer groove bodies, and the pressing mechanism is used for pressing the inner ring into the inner side of the outer ring to realize assembling. Therefore, the efficiency and quality of the assembling can be greatly improved.

The utility model relates to a novel stamping outer ring structure with vibration and noise reduction and a vibration and noise reduction needle roller bearing in the technical field of bearings, the vibration and noise reduction needle roller bearing is provided with the novel stamping outer ring structure, and the novel stamping outer ring structure comprises an outer ring body. The outer ring body is of a triangular-like structure, the triangular-like structure is provided with three elastic arc-shaped edges which are arched outwards and connected in pairs, and the connecting position of every two adjacent elastic arc-shaped edges is in arc transition. According to the novel bearing stamping outer ring structure with the vibration reduction and noise reduction functions and the vibration reduction and noise reduction needle bearing, an original circular stamping outer ring is changed into a triangle-like special-shaped structure, when a bearing is pressed into a shell hole, the three sections of elastic arc-shaped edges are in close fit with a shaft without gaps, vibration can be reduced, and therefore noise is further reduced.

The utility model relates to an anti-falling structure of a transmission needle bearing, and belongs to the technical field of automobile transmission equipment. According to the technical scheme, the device comprises a rear body (1), an intermediate shaft rear bearing baffle (2), an intermediate shaft rear bearing (3) and an inner hexagonal flower type sunk screw (4), the intermediate shaft rear bearing (3) is installed on the rear body (1) in a pressing mode, the intermediate shaft rear bearing baffle (2) is matched with the intermediate shaft rear bearing (3), and the intermediate shaft rear bearing baffle (2) is fixed to the rear body (1) through the inner hexagonal flower type sunk screw (4); and the rear body (1) is provided with a bearing position and a bolt hole which are matched with the intermediate shaft rear bearing (3) and the inner hexagonal flower type sunk screw (4). The utility model has the beneficial effects that the middle shaft rear bearing baffle plate is arranged on the mounting end surface of the middle shaft rear bearing through the inner hexagonal flower type sunk screw, and the middle shaft rear bearing baffle plate is used for limiting the middle shaft rear bearing and preventing the middle shaft rear bearing from falling off.

The utility model discloses a novel low-transfer-resistance double-vertex sliding plate bridge which comprises a bridge rod, a base piece and a base connecting piece, the base connecting piece is installed on the base piece in a sliding mode, the bridge rod is arranged between the base piece and the base connecting piece, bridge shafts are installed at the two ends of the bridge rod, a main nail piece is installed on the base connecting piece, and the main nail piece is installed on the base connecting piece. One end of the main nail piece enters a reserved position of the bridge rod, the end, away from the base connecting piece, of the main nail piece is sleeved with a PU pad and a PU gasket, vertex bases are arranged on the base piece and the base connecting piece, vertex pieces are installed at the positions, facing the vertex bases, of the bridge rod, and the other ends of the vertex pieces are inserted into the vertex bases. Buffering connecting pieces for providing axial and radial supporting are installed on the top point pieces, and end face needle bearings are installed on the exposed sections of the top point pieces. According to the utility model, the structure is simple, the double-vertex structure design is adopted, the bridge control is completely linear, and the steering is completely delay-free; the end face needle bearing and the vertex needle bearing replace a traditional polyurethane top bowl, rotation resistance is low, and control is smooth.

A kind of gearbox forced lubrication mechanism, including oil injection pipe, oil pipe connecting assembly and oil delivery assembly;Oil injection pipe one end is connected by oil pipe joint into lubricating oil, and the pipe wall of oil injection pipe is equipped with rotating shaft oil supply hole;Oil delivery assembly includes oil injection pipe spacer sleeve and oil pipe, and oil injection pipe spacer sleeve is sleeved on oil injection pipe, and the sleeve of oil injection pipe spacer sleeve corresponds and communicates with rotating shaft oil supply hole, and the import end of oil pipe is set in sleeve, and the outlet end of oil pipe is stretched out of sleeve, and annular radial protrusion is set;Oil pipe connecting assembly includes rotating shaft spacer sleeve, pressing plate and fastener, and rotating shaft spacer sleeve is sleeved on rotating shaft, and rotating shaft spacer sleeve is equipped with the connecting hole that can be connected rotating shaft oil inlet hole and oil pipe, and pressing plate is set in oil pipe, and simultaneously press tightly rotating shaft spacer sleeve and radial protrusion, and fastener is fixedly connected with pressing plate and rotating shaft spacer sleeve.The utility model solves the problem that rotating shaft axle end cannot be drilled for oil supply, and the needle bearing and spline on rotating shaft need forced lubrication.

The invention relates to a differential lubricating mechanism which comprises a straight shaft supporting frame, a needle bearing and a supporting gasket, a differential shell comprises a left differential shell and a differential right shell, a cross shaft comprises a cross shaft long shaft and two cross shaft short shafts, the left differential shell is of an integrally-formed structure, a cross shaft hole is formed in the left differential shell, and a cross shaft is arranged in the cross shaft hole. The half axle gear, the planetary gear and the cross axle are arranged in the left differential case, cross axle mounting holes are formed in the straight axle supporting frame, one ends of short shafts of the two cross axles are inserted into the cross axle mounting holes respectively and connected with long shafts of the cross axles, and the needle bearing is arranged between the planetary gear and the cross axles. The supporting gaskets comprise the half axle gear supporting gasket and the planetary gear supporting gasket, and the half axle gear supporting gasket and the planetary gear supporting gasket are arranged on the half axle gear and the planetary gear in a limiting mode respectively. And through rolling friction motion of the needle bearing, motion damping between the planetary gear and the cross shaft is reduced, and the transmission efficiency is improved.

The utility model relates to an outer wall grinding device of a roller pin gear supporting shaft sleeve, which comprises a motor, a first grinding roller, a second grinding roller and a third grinding roller, the first grinding roller, the second grinding roller and the third grinding roller are arranged side by side, and the motor drives the first grinding roller, the second grinding roller and the third grinding roller to rotate. The rotating direction of the first grinding roller is opposite to that of the second grinding roller, and the rotating direction of the third grinding roller is opposite to that of the second grinding roller. The outer wall grinding device of the needle bearing supporting shaft sleeve has the advantages of being simple in structure and easy and convenient to assemble, and due to the fact that the three grinding rollers are arranged, the grinding efficiency is greatly improved; in addition, due to the fact that the multi-stage transmission bevel gears are arranged on the grinding device, operation of the grinding roller is more stable, the speed of the grinding roller is controlled within a preset range through speed reduction between the bevel gears, and therefore the finer grinding effect is achieved.