39results about How to "Eliminate sliding friction" patented technology

A sliding friction-free gear has cams of specific profiles, rollers separating cooperating cams that roll over the cams of the gears, thus eliminating the sliding friction between the gears. The rollers are mounted rotatably e.g. in sliders or eccentrics, wherein the sliders, resp. eccentrics, are mounted slidingly, resp. rotatably, in a yoke attached rigidly to a shaft. The rollers are free to execute oscillating motion relative the yoke while rolling over the cam profiles of the cams of the gears. The cooperating members of the gear contact along a line like in conventional evolvent gears, and unlike in the Wildhaber-Novikov's gear (where the momentary contact between teeth of cooperating toothed wheels is pointwise); therefore the gear according to the present invention offers much larger transmission capacity and is much less prone to seizure than known gears.

Winding-machine for rolled or drawn wire/rod (F) with device to form a wire/rod coil (R) in a winding-machine with one or more winding reels (1) placed downstream of a wire/rod working installation, provided with wire/rod-drawing means (2-3) and5 thereafter: an oscillating wire/rod-guide (4) with wire/rod-guide handling means (6) to lead the end of the wire/rod-guide reel side to follow the winding so that the wire/rod from the said advancing means (2-3) is wound up in the reel (1) with first translation means (65) to move the reel side end (1) of the exit opening said wire/rod-guide (4) parallel to the reel/mandrel axis (1) and second translation means (8-6) to move said exit opening of said wire/rod-guide (4) in withdrawal/approach perpendicularly to the axis of said reel/mandrel (1) in order to follow the increase of diameter of the coil (R) during winding-up with improved wire/rod containment system at said exit opening (7).

The invention discloses a rope-rod hybrid driving super-redundant robot. The rope-rod hybrid driving super-redundant robot comprises a base, a plurality of motors arranged on the base, a plurality ofrod system branched chains, a plurality of rope branched chains and a plurality of movable platforms; the plurality of movable platforms are sequentially connected in series to form an integrated structure through the rod system branched chains and are connected to the base; the plurality of movable platforms are sequentially connected with a wire winding wheel disc of the motors on the base through the rope branch chains. Compared with a traditional rigid branched-chain hyper-redundant robot, has a larger working space, and is higher in flexibility and smaller in quality, low in manufacturingcost, easy to install and the like, the sliding friction between the rope and the platform is eliminated, the rope-rod hybrid driving super-redundant robot can be used for a large-range attitude adjustment, position tracking, motion simulation and the like in a high-speed/heavy-load occasion.

In a golf club head assembly a body member has a top-forward angled front face, the face comprising a plurality of generally forward-facing teeth. The golf club head assembly further comprises a loft angle adjustment mechanism attached to the body member for adjusting a loft angle of the face. The mechanism includes a hosel element releasably attached to a bar rotatably mounted to an upper side of the body member parallel to the face. The bar is rotatably journaled or mounted in a pair of bar supports attached to the body member. Set screws reside in threaded holes in the bar supports, the set screws operable to releasably lock the bar in a selected orientation relative to the body member, where the selected orientation of the bar corresponds to and determines the loft angle of the front face. The forward angle of the front face, the angles of the teeth, and loft angle of the face are jointly chosen to impart a pure rolling motion onto a struck golf ball.

The invention discloses a high-temperature internal pressure shear deformation lateral stiffness test system of a pipeline system. Technical difficultiesinequivalent simulation of lateral shear deformation under the working conditions of high temperature and internal pressure of a pipeline structure are overcome, and the influence of tool friction on lateral stiffness by axial elongation ofpipelines is eliminated to a certain extent. The test system can synchronously simulatethe conditions oftemperature, internal pressure and lateral shear deformation and examine structural strength, rigidityand sealing performance, thereby being capable of providing a design basis for various engine related pipeline structures.

The invention relates to a full-automatic sidewall turn-up system of an all-steel tire two-drum forming machine. Two sides of the all-steel tire two-drum forming machine are provided with a conical turn-up wheel, each conical turn-up wheel is connected with the all-steel tire two-drum forming machine by virtue of a sidewall turn-up arm apparatus; the specific structure of the sidewall turn-up arm apparatus is as follows: the conical turn-up wheel is arranged on the inner side surface of the front end of a main support by virtue of a central bearing, the front end of the main support is provided with a curved surface supporting plate, the curved surface supporting plate is coaxial with the conical turn-up wheel, and the radius of the curved surface supporting plate is 3 to 8 mm less than the radius of the conical turn-up wheel; the curved surface supporting plate is provided with a plurality of micro universal balls, the micro universal balls are protruded out of the outer circular surface of the curved surface supporting plate, and the micro universal balls are fit to a sidewall part. By adopting the system, the automatic turn-up of a sidewall can be realized, the sidewall is enabled to be uniformly stretched, and characteristics for lowering the labor intensity, improving the labor efficiency and eliminating the pollution to a mold can be realized.

The invention relates to a bearing, in particular to a high-speed heavy-duty high-speed rail bearing with a middle ball. The novel high-speed heavy-duty high-speed rail bearing is composed of an outerring with the middle ball, a deep groove ball bearing inner ring, two double-half inner rings and three rows of rolling bodies, wherein a deep groove ball bearing rolling body track is arranged in the middle of the inner circumference of the outer ring, circular roller tracks are respectively arranged on both ends of the deep groove ball bearing rolling body track at an interval, and circular rollers are respectively arranged in the tracks. A deep groove ball bearing structure is arranged in the middle of the inner circumference of the outer ring and between double sections of circular rollers or cylindrical rollers, the advantages of pure rolling friction of two-point contact of ball rolling bodies, high rotating speed and capability of bearing two-way combined load are fully used so asto design a mechanical structure of the middle ball, the scheme that the axial force of a roller contact angle bearing is increased by a double-section tapered roller bearing is replaced, roller deflection and frictional heating which are caused by stress concentration of the small end of a tapered roller can be effectively reduced, and the rotating speed and the rotary accuracy of the bearing areincreased. Because SKF bearing materials verify that the load carried by the rollers is uniformly distributed on the rollers and a raceway contact surface by virtue of the special circular cambered surfaces of the circular rollers, the middle ball is arranged between the double-row circular rollers, so that the radial bearing capacity of the bearing can be greatly increased, and low friction, lowtemperature rise and long service life are realized.

The invention discloses a wall corner surface car anti-scratch device for an underground garage. The wall corner surface car anti-scratch device comprises two supporting assemblies and a rotating assembly, the rotating assembly comprises a rotating shaft and a plurality of elastic contact pieces, and the contact pieces are arrayed along the axis of the rotating shaft and are all connected to the rotating shaft in a sleeving mode; and the supporting assemblies are fixed to a wall, the two supporting assemblies are located at the upper end and the lower end of the rotating shaft correspondingly,and the rotating shaft is rotationally connected with the supporting assemblies. The wall corner surface car anti-scratch device rotates with a car contact part to reduce and even eliminate sliding friction force between the wall surface and the surface of a car so as to ensure the surface quality of the car and prevent scratching; and meanwhile, by additionally setting the elastic deformation function on the horizontal surface, a buffer space close to the wall is provided for the car through the elastic deformation function, the situation that the car collides with the wall and consequently,the shape of the car is pressed and deforms is avoided, the surface quality of the car and the safety of a driver and passengers are further ensured, and the sudden collision situation is avoided.

The invention relates to bearings, in particular to a high-speed railway power bearing provided with a middle ball reducing middle ring. The novel high-speed railway power bearing is composed of the reducing middle ring provided with a middle ball, an outer ferrule provided with a ball bladder inner track, two double-half inner ferrules, an inner-layer rolling body and an outer-layer rolling body.According to the bearing, the mechanical structure of a double-row angular contact ball bearing or a deep groove ball bearing is arranged in the middle of the inner circumference (or the inner circumference and the outer circumference) of the reducing middle ring and arranged between two sections of circular ring rollers or two sections of cylindrical rollers, the advantage of two-point contact pure rolling friction of a ball rolling body is fully utilized to bear bidirectional combined loads, the mechanical structure of the middle ball is created, the radial bearing capacity of the bearing can be greatly improved, the rotating speed and the rotating precision of the bearing are effectively improved, and the bearing is high in speed, low in friction, slow in temperature rise and long in service life.

The invention discloses a high-speed indexing separator. The high-speed indexing separator comprises a power input cam, a power output rotating tower and a power output shaft, wherein the power input cam is in transmission connection with the power output rotating tower; the power output rotating tower is in transmission connection with the power output shaft; a plurality of roller pairs are distributed around the power output rotating tower in the radial direction, and each roller pair comprises a forward rotating roller and a backward rotating roller which are structured the same; supporting ribs with driving curve outlines are arranged on the power input cam; the roller pairs are positioned in clearances which are formed through the circularly-distributed supporting ribs; the forward rotating rollers and the backward rotating rollers of one roller pair are correspondingly in contact fitting with the surfaces of the supporting ribs at two sides of the clearances; and the forward rotating rollers and the backwards rotating rollers of adjacent roller pairs fit two surfaces of the supporting ribs at the same position. The high-speed indexing separator is long in service life; the rotating speed of the high-speed indexing separator in actual work is doubled that of a traditional separator, so that the efficiency of the separator as well as a production line of the separator can be extremely improved.

The invention relates to the technical field of precise movement, and discloses a precise movement air floatation supporting device which comprises a base, a guide rail and a supporting frame, wherein the guide rail is horizontally arranged on the base and fixedly connected with the base, the supporting frame is arranged on the guide rail in a sleeving mode and can slide along the guide rail, and the supporting frame comprises a bottom air floatation plate, a top air floatation plate and lateral air floatation plates; the number of the lateral air floating plates is two, the two lateral air floating plates are symmetrically arranged, lateral air paths are arranged in the lateral air floating plates, lateral air inlet holes and lateral exhaust holes which are communicated with the lateral air paths are formed in the surfaces of the lateral air floating plates, and a bottom surface air path is arranged in the bottom air floating plate. And the surface of the bottom air floating plate is provided with a bottom surface air inlet hole and a bottom surface air outlet hole which are communicated with the bottom surface air path. Compared with the prior art, the precise movement air floatation supporting device is simple and reliable in structural design, the air inlet and outlet holes and the air path design can effectively reduce the space occupation amount of an air source, the supporting frame has good movement posture and movement precision, and the use experience of operators is good.

The invention belongs to the field of bearings, and particularly relates to a cylindrical roller bearing and an assembling method of the cylindrical roller bearing, rollers are arranged between an inner ring and an outer ring of the cylindrical roller bearing, a cylindrical isolation rod with the diameter smaller than that of the rollers is arranged between every two adjacent rollers so as to separate the two adjacent rollers, the cylindrical roller bearing further comprises a hooping ring set, and the hooping ring set is arranged between the inner ring and the outer ring of the cylindrical roller bearing. The hooping ring set comprises a first hooping ring and a second hooping ring, roller hooping ring matching ring grooves are formed in the rollers, the first hooping ring sequentially bypasses the rollers and the isolation rods alternately inside and outside, the second hooping ring and the first hooping ring are arranged in the axial direction of the rollers in a spaced mode, and the second hooping ring sequentially bypasses the rollers and the isolation rods inside and outside in the direction opposite to the first hooping ring. The first hooping ring and the second hooping ring are arranged in the hooping ring set so that the rollers and the isolation rods can be clamped between the first hooping ring and the second hooping ring, the cross section size of the roller hooping ring matched ring groove in the axial direction of the rollers is equal to or larger than that of the hooping ring set, the hooping rings hoop the rollers on the inner ring, and sliding friction is effectively reduced or even avoided.

The invention discloses a centring platform of a large machine coupling. The centring platform is used for centring a machine shaft and a motor shaft. The centring platform of the machine coupling comprises V opening blocks, a middle column, first dial indicators and a second dial indicator. The total number of the V opening blocks is two. Each V opening block comprises a V-shaped portion and an end plate. Each end plate is arranged on the end face of one side of the corresponding V-shaped portion. Butt clamp holes used for combining mounting of the two V opening blocks are formed in the two sides of the V-shaped portions. The end face of one side of the middle column and the end faces of the sides, deviating from the V-shaped portions, of the end plates are connected through fasteners. The axis of the middle column coincides with the butt clamp center line of the V-shaped faces of the two V-shaped portions. The first dial indicators and the second dial indicator are connected to the middle column. The V opening blocks, the middle column, the first dial indicators and the second dial indicator are arranged on the machine shaft, the first dial indicators rotate along with the middlecolumn to measure the end face beating degree of the motor shaft, and the second dial indicator rotates along with the middle column to measure the radial beating degree of the motor shaft.

The invention discloses a valve actuator, and belongs to the related technical field of valve actuators. The valve actuator mainly comprises a shell, wherein an output shaft used for outputting torque is arranged in the shell, the valve actuator further comprises a magnetic part and a Hall element, the magnetic part and the output shaft are coaxially arranged, the magnetic part is connected with the output shaft, the Hall element is fixed to the shell, the Hall element and the magnetic part are oppositely arranged, and the Hall element is used for sensing change of a magnetic field of the magnetic part when the magnetic part rotates along with the output shaft, so that position feedback of the output shaft is achieved. According to the valve actuator, effects of rapid operation or high-frequency operation of the valve actuator on the feedback precision of the valve actuator can be avoided.

The present invention relates to a conveyor device with a powered endless pulling means for products from the tobacco processing industry. The conveyor device has a deflection device, an endless traction unit rotating on an outer face on the deflection device; and an entrainment unit extending outwards on the endless traction unit. The deflection device is formed by at least one guide piece supported by rotating means and is pressed against the endless traction unit via a guide face outside the radial direction. The guide surface is interrupted by regularly arranged recesses (12) into which an entrainment unit (15) is accommodated. An adjusting device is provided for adjusting the orientation of the guide unit (3) with respect to the endless traction unit (2) during operation of the conveyor (1).

Rotary vane internal combustion engine comprises of two side-by-side rotors, placed in a cylindrical housing, wherein each rotor has at least two radial vanes rigidly attached to the rotor that form chambers for intake, compression, combustion, and exhaust. Each rotor alternately engages with a shaft by overrunning one-way clutches and is held from turning back, through the damper, mounted on a corresponding flywheel and forming a part of the flywheel assembly, which is rigidly attached on the shaft. The assembled rotors from the outside are rigidly closed by flanges on each of which is mounted at least one blade. The blades are positioned into formed cavities between the rotors and caps of the housing, thereby forming two cooling cavities through which coolant circulates around rotors through openings in the housing and through longitudinal grooves in the shaft. On the vanes are mounted cylindrical and conical seals, which remove the need for lubrication.