39results about How to "Avoid early wear" patented technology

The invention discloses a hydraulic system, a hoisting mechanism and engineering machinery. The hydraulic system comprises an execution part, a main valve used for reversing of the execution part and a brake used for braking the execution part, wherein the brake is in an open state during oil-taking and in a closed state during oil-returning. The hydraulic system further comprises a brake oil way which is connected between an oil source and the brake, and a first control valve is arranged on the brake oil way, and opens or closes the brake oil way according to load pressure of the execution part and output pressure of the main valve. The hydraulic system can effectively prevent a load from driving the execution part to move, can avoid hook gliding when applied to the hoisting mechanism, and has the advantages of high safety, high reliability, small braking block abrasion and the like.

The invention relates to a pocket machining device and a method for machining an integral bearing retainer of wind power equipment. The machining method comprises the steps of material feeding, rough rounding, welding, fine rounding and shaping in sequence, as well as pocket machining; the machining method is characterized in that: in the material feeding step, a cold-rolled plate is cut into a straight-strip-shaped pocket-free plate; the pocket machining step is performed after the fine rounding step and before the shaping step; and the roundness of pockets on the retainer can be ensured, the pockets can be prevented from deforming and generating multi-edge round, and the precision of the pockets on the retainer can be guaranteed. The pocket machining device comprises a supporting mechanism, a radial positioning mechanism, an axial positioning mechanism, a retainer driving and moving mechanism and a movable arm limiting mechanism, as well as a hydraulic control system which is used for controlling a first cylinder, a second cylinder, a movable arm cylinder and a third cylinder. The functions of clamping, positioning, equal-distance feeding, compressing and discharging and the like of the retainer after being welded into a whole can be realized during pocket laser cutting and machining.

A tire contour shape is formed by a single arc in a condition in which tire flattening rate is more than 55% and less than 70% and internal pressure is 5%. Shoulder lateral grooves extend at an angle α of 80 to 90° from the axially outer side of the tread ground-contact edge to the axially inner side of the tire, and the tire axially inner ends terminate within the shoulder land portion. A tire axial distance Ds between the tire axially inner end and the shoulder circumferential main groove is in the range of 3.5 to 5.5 mm, the shoulder lateral groove has the deepest part where the groove depth is largest, and the groove depth of the deepest part is 70 to 90% of the groove depth of the shoulder circumferential main grooves.

The invention relates to an intermediate support assembly of a heavy vehicle drive shaft. A bearing is assembled in an inner frame through clamp springs on two sides, sealing rings are arranged on two sides of the bearing, the inner frame is externally vulcanized with an outer cover into a whole through a rubber damping pad, the rubber damping pad is hollowed out internally to form an 'n'-shaped damping groove I which forms a semi-surrounded structure, the rubber damping pad on the upper portion of the inner frame and the inner frame are both covered in an 'n'-shaped empty space, clearances are formed at two side edges of the inner frame, and the lower portion of the rubber damping pad and the inner bottom of the outer cover are connected to form a connecting rib. After the assembly is subjected to complete vehicle trial assembly, the 'n'-shaped semi-surrounded structure of the rubber damping pad can absorb large axial movement of the intermediate support assembly, the angle of the intermediate support assembly is radially adjustable, the radial direction of the intermediate support assembly is ensured to be perpendicular to the axial direction of a center line of the drive shaft, and the intermediate support assembly is simple and feasible and remarkable in benefit, and has promotional value in the automobile industry.

The invention discloses a process of a double-hearth continuous rare earth carburizing equipment. A through type continuous rare earth carburizing furnace comprises double hearths which are arranged in a Z shape, wherein a first hearth is a carburizing speed control hearth and is divided into I, II and III zones; and a second hearth is a carburized layer structure control hearth and is divided into IV and V zones. The two hearths are communicated or partitioned through a gate, and a material tray in the III zone is pushed to the IV zone by utilizing a transverse material-pushing mechanism. Operation parameters of basic processes of the zones are that: in the first hearth, the temperature of the zone I is 860 to 880 DEG C, and Cp is uncontrolled; the temperature of the zone II is 920 DEG C, and Cp is 1.20-1.25 percent; and the temperature of the zone III is 930 DEG C, and Cp is 1.30 to 1.4 percent; in the second hearth, the temperature of the zone IV is 880 to 890 DEG C, and the Cp is 1.1 to 1.2 percent; and the temperature of the zone V is 860 to 840 DEG C, and Cp is 0.9 to 1.0 percent. The carbon potential control accuracy of furnace gas is improved and the mutual interference is reduced, so the setting and adjustment of process parameters are simpler and easier, and the stability and reliability of process operation are greatly improved. By the process, the carburizing cycle is further shortened, and the work efficiency is improved by over 30 percent; moreover, the optimal metallographic structure is easy to obtain, so that the service life of a product is prolonged.

The invention discloses an inner and outer rolling wheel type rocking arm with a lubricating structure. The inner and outer rolling wheel type rocking arm with the lubricating structure is characterized in that a rocking arm shaft is provided with a first radial oil outflow hole and a second radial oil outflow hole communicating with a machine body main oil channel; a first oil passing channel anda second oil passing channel communicating with the first radial oil outflow hole and the second radial oil outflow hole correspondingly are arranged in a rocking arm body; a lubricating oil way is arranged in a rolling wheel shaft; one end of the lubricating oil way communicates with the first oil passing channel, and the other end of the lubricating oil way communicates with a gap between the rolling wheel shaft and an inner rolling wheel; the inner rolling wheel is internally provided with a radial oil channel; one end of the radial oil channel communicates with the gap between the rollingwheel shaft and the inner rolling wheel, and the other end of the radial oil channel communicates with a gap between an outer rolling wheel and the inner rolling wheel; and the second oil passing channel communicates with a gap between the outer rolling wheel and an avoiding area of the rocking arm body. The inner and outer rolling wheel type rocking arm with the lubricating structure makes machine oil fast flow to various gaps of rocking arm shaft parts to perform sufficient and in-time lubricating, abrasion caused by impacting and friction is reduced, and the service life of the rocking armis prolonged.

The invention discloses a lock ring type circular arc locking surface automobile synchronization regulator. A synchronization sliding sleeve (1) sleeves the outer circle of a synchronization tooth holder (4); a supporting assembly is arranged between part of the synchronization tooth holder (4) and the synchronization sliding sleeve (1); the rest of the synchronization tooth holder (4) is in transmission linkage with the synchronization sliding sleeve (1) through a spline combination; the synchronization sliding sleeve (1) rotates along with the synchronization tooth holder (4); two synchronization tooth rings (3) are pressed against two surfaces of the synchronization tooth holder (4); two synchronization cone hubs (2) are correspondingly arranged on the outer sides of the two synchronization tooth rings (3); each synchronization cone hub (2) is provided with an outer cone surface, and each synchronization tooth ring (3) is provided with an inner cone surface; the inner cone surface of each synchronization tooth ring (3) is combined with the outer cone surface of the corresponding synchronization cone hub (2); a tooth-end locking chamfering surface I (5) of an inner spline (11) of the synchronization sliding sleeve (1) is set as a circular arc locking surface I; a tooth-end locking chamfering surface II (6) of an outer spline (12) of each synchronization tooth ring (3) is set as a circular arc locking surface II.

The invention discloses an air filter assembly, which structurally comprises a shell, a blade ring, a filter cartridge and a pull rod, wherein a stop cover is arranged on one end in an axial direction of the shell, a sealing cover is arranged on the other end in the axial direction, the stop cover is provided with an exit pipe coaxial to the shell, and the pull rod is arranged in the exit pipe through a support; the filter cartridge externally sleeved with the blade ring penetrates through the other end in the axial direction of the shell, the penetration end of the pull rod is arranged in the shell, the blade ring is arranged on one side in the axial direction in the shell, the flange of the blade ring is in contact with a retainer ring of the filter cartridge, the pull rod is screwed with a nut of the sealing ring in contact with the filter cartridge, so that the sealing ring of the filter cartridge is in tight contact with the inner wall of the stop cover, and an intake pipe is arranged on a place on one side in the axial direction of the circumferential sidewall of the shell, which corresponds to the blade ring; the sealing cover penetrates through the penetration end of the pull rod, and the pull rod is screwed with a nut in contact with the sealing cover, so that the sealing cover is connected with the other end in the axial direction of the shell, and the sealing cover is provided with a dust removal bag; and the dust removal bag is communicated with a dust collector. The air filter assembly has the advantages of better filtering performance, stronger reliability, and capability of avoiding early abrasion of a locomotive engine to a certain degree.

The invention discloses a side suction nozzle device for a road sweeper and the road sweeper. The side suction nozzle device for the road sweeper comprises a mounting base which is used for being mounted and fixed on the road sweeper, and a side suction nozzle which is used for walking in a manner of being attached to a curb and sucking garbage on a curb strip. A horizontal elastic translation mechanism for forcing the side suction nozzle to perform self-adaptive translation in the horizontal direction by utilizing elastic force so as to enable the side suction nozzle to stably fit the curb towalk and a vertical translation mechanism for controlling the side suction nozzle to perform translation motion in the vertical direction are arranged between the mounting base and the side suction nozzle; and the side suction nozzle is connected to the mounting base through the horizontal elastic translation mechanism and the vertical translation mechanism and deflects to the outside of the vehicle body from the side direction of the vehicle body of the road sweeper. It can be ensured that the side suction nozzle has the functions of horizontal and vertical translation collision prevention,dust collection close to the curb and real-time lifting during operation, and the device can be suitable for water-free dust suppression pure suction type operation of dry type dust removal of the curb strips on the two sides of a vehicle.

The invention relates to a design method of a shock absorber support locating device. The shock absorber support locating device comprises an angular adjustment disc, height adjusting devices, a locating beam and a locating pin, wherein a cross section of the angular adjustment disc is of a carving-lined oblique angle. The number of the height adjusting devices is two sets and the height adjusting devices are respectively arranged at two ends of the locating beam. One end of each set of the height adjusting device is fixedly connected with the locating beam and the other end of the each set of the height adjusting device is fixed with the angular adjustment disc. The angular adjustment disc is connected with a shock absorber support through the locating pin. The design method of the shock absorber support locating device has the advantages of improving the locating precision of cars in the vertical direction, up and down heights and the front and down directions.

The invention provides a rice harvester driving axle. The rice harvester driving axle comprises an integral type driving axle box shell body, wherein a shaft I, a shaft II, a shaft III and a shaft IVare sequentially mounted in the driving axle box shell body in parallel; two ends of four transmission shafts are matched on two side walls of the driving axle box shell body through bearings respectively; an input end of a driving axle box is matched with a static oil pressure speed changer; the input end of the static oil pressure speed changer is connected with an input belt wheel and an outputend of the static oil pressure speed changer stretches into the driving axle box shell body and is connected with an input gear; an output shaft transversely stretches out two sides of the output endof the driving axle respectively; the output shaft is connected with a final transmission large gear in the driving axle box shell body. The rice harvester driving axle provided by the invention is compact in structure; the driving axle box shell body adopts an integral type structure and has the advantages of good gear contact, low noise and long service life.

The invention discloses an air boost pump of an engineering mechanical braking system. The air boost pump comprises a cylinder and a braking oil cylinder, wherein the cylinder comprises a cylinder shell, an air piston, an air piston return spring and an oil cylinder connecting cover; a piston rod of the gas piston passes through a hole of the oil cylinder connecting cover and is connected with an oil piston of the braking oil cylinder; a rodless cavity and a rod cavity are formed in the cylinder; an air inlet of the air boost pump is communicated with the rodless cavity of the cylinder; a two-way valve assembly is arranged on the air piston; and a one-way valve assembly (5) is arranged on the oil cylinder connecting cover. With the adoption of the above technical scheme, dust gas of an external severe environment cannot enter an air chamber by using a structure of an internal respiration type boost pump and working principles of a one-way valve and a two-way valve; as long as an air source is ensured to be clean, the cylinder can be ensured not to be polluted, the cleanness of the air chamber is guaranteed, premature wear of an air piston leather ring is overcome, and the product reliability and durability are improved.

This material feeding device is equipped with the material feeding rotary chute; a vertical directional support mechanism provided on a main spindle upper end supporting mechanism of the gyratory crusher and rotatably supporting the chute via a rolling bearing provided at a lower part of the chute; horizontal support rings disposed on the outer peripheral surface of the upper part of the chute with equal angular spaces; a horizontal support ring position adjuster for adjusting the position of the rings advancingly and retreatingly in relation to a center of the chute; and a motor connected to one horizontal support ring among the support rings for rotating the chute. To uniformly feed crushing raw material to a crushing chamber of a crusher by stably and smoothly rotating a material feeding rotary chute, and to prevent early damage of horizontal and vertical mechanical support parts for rotatably supporting the rotary chute.

The invention belongs to the field of air purification, and particularly relates to a dustproof filtering air filter for an automobile. The dustproof filtering air filter for the automobile comprises an air suction structure, a filtering structure and an induction structure, wherein an air inlet is formed in the inner wall of the filter; a first fixing support frame is fixedly connected onto the inner wall of the filter; the first fixing support frame is connected with a first air suction fan through a first rotating shaft; a pipeline air inlet is formed in the front end of the filtering structure; a filtering element is fixed in the filtering structure; a spiral filtering pipeline is connected to the outer side of the filtering element; a first U-shaped pipe is connected to the lower end of the filtering structure; filtering oil is contained in the first U-shaped pipe; a second U-shaped pipe is connected to the other side of the first U-shaped pipe; an air outlet is connected to the other side of the second U-shaped pipe; a second air suction fan is arranged on the inner wall of the air outlet; a second fixing support frame is fixedly connected to the inner wall of the air outlet; an inductor is arranged on the second fixing support frame; the second fixing support is rotationally connected with the second air suction fan through a second rotating shaft; and an opening and closing opening is formed in a valve. The dustproof filtering air filter for the automobile solves the problems of big size and poor filtering effect of a conventional filter.

The invention discloses a supercharger oil inlet gasket for the engine test run. The supercharger oil inlet gasket is installed between a supercharger oil inlet flange and a supercharger oil inlet connector, and comprises a gasket body, the gasket body is of a multilayer structure with the sealing function, and is provided with an oil inlet, and a filter net is arranged at the oil inlet and used for filtering impurities in engine oil. Aluminum sheets are arranged on the upper face and the lower face of the multilayer structure, a filling layer is arranged in the middle of the multilayer structure, and framework steel sheets for supporting are arranged in the filling layer. According to the supercharger oil inlet gasket, the filter net is arranged on the oil inlet of the gasket, and the engine oil can be filtered before entering a supercharger; due to the fact that metal materials are adopted for the surface of the oil inlet gasket, the supercharger oil inlet gasket is not prone to being adhered when being disassembled, and can be repeatedly used.