104results about How to "Reduce friction surface" patented technology

The trimmed buckwheat sheller includes one outer barrel serving as the casing, one inner bushing, one bearing seat with one rotating shaft, one movable wheel on the shaft, one upper cover, one fixed wheel fitting the movable wheel. It features the upper cover comprising one inner ring and one outer ring connected through threads for easy interval regulating and trimming. The present invention has the advantages of high regulating precision, simple and fast regulation, high production efficiency and capacity of processing buckwheat in different plumpness.

A handle support mechanism is designed for attachment to a door lock, preferably the exterior of a mortise lock, that has two handles driven back to an initial position with a common return spring after either handle is used. The support mechanism prevents the unused handle from drooping or rotating when the common return spring is compressed as the opposite handle is turned. The support mechanism includes first and second friction discs trapped between the exterior of the mortise lock and the legs of a U-shaped spring bracket. The spring bracket applies an inward spring pressure to prevent a friction disc and its corresponding handle from turning when the other handle is in use. The handle support mechanism improves visual appearance and is particularly suitable for retrofit installations, lever handle designs and mortise locks with independent switch sensors on the two handles that notify a monitoring system as to which handle was turned to open a monitored door.

An image scanning unit an image forming apparatus having the same to scan an image recorded on a document. The image scanning unit includes: a transparent window on which a document to be scanned is laid; an image sensor running straightly under the transparent window for capturing an image recorded on the document, a unit for driving the image sensor; a guide shaft for guiding the straight movement of the image sensor; and an image sensor carrier connected to the driving unit and the guide shaft for straightly moving the image sensor along the guide shaft when the driving unit operates. The image sensor carrier has an image sensor mounting surface on which the image sensor is mounted, and a guide shaft holder integrally formed with the image sensor mounting surface and mounted on the guide shaft.

The invention discloses a gravity self-centering self-locking clamp. The gravity self-centering self-locking clamp is composed of a chassis, a bearing structure and two or more clamping units. Each clamping unit is composed of a clamping rod, a lifting rod, a clamping arm and a stand column. The stand columns and chassis are fixed. The clamping arms are fixed on the stand columns and can rotate along the stand columns. The clamping rods are fixed at the top ends of the clamping arms. The lifting rods are fixed at the bottom ends of the clamping arms. The bearing structure is composed of a spring and a carrier plate. The spring makes contact with the chassis. The carrier plate is fixedly connected with the lifting rod. The modular design is adopted, gravity and elastic force are combined through the lever principle, products are automatically clamped when being placed in the clamp and automatically loosened when being taken out from the clamp, and the clamp has the automatic centering effect and the self-locking effect.

The invention relates to a liquid distribution valve for a tissue dehydrator. The liquid distribution valve comprises a valve shell, and a distribution valve plug which can be rotated in the valve shell; a plurality of liquid inlet holes are uniformly distributed on the valve shell along the circumferential direction; the distribution valve plug is provided with a liquid communication hole which can be communicated with the liquid inlet holes through rotation and an optoelectronic switch control device for controlling the distribution valve plug to rotate; the optoelectronic switch control device comprises an optoelectronic signal receiving unit, a dividing plate and a control device; the diving plate is coaxially arranged on a rotation shaft of the distribution valve plug; open slots of which the number is the same as that of the liquid inlet holes on the valve shell are uniformly distributed on the dividing plate along the circumstantial direction; and the optoelectronic signal receiving unit is arranged at the corresponding position of the open slots of the dividing plate. Accurate control is realized by adopting an optoelectronic switch, the structure of the distribution valve plug is improved, the volume is reduced, the friction surface is reduced, driving power is lower, the liquid distribution valve is rotated more flexibly, and can act in place more reliably, the sealing effect is improved, and the phenomenon of liquid leakage is avoided.

A friction stir processing tool having a shoulder, which is implemented on a body, and which has a friction surface for pressing against at least one workpiece at least partially provided with a surface coating, and a friction reducing unit for reducing the friction resistance between the surface coating and the friction surface.

The rotor for rotary displacement pump includes one main body with central shaft hole and blades set symmetrically around the shaft hole. The blade has groove parallel to the rotor axis in the end and cavities in the two-side tangent to the rotor axis. In case that t some granular or hard impurity passes through the end of the blade, the impurity can crush into the groove to avoid jamming of and friction to the blade, and this can ensure the fluent conveyance of medium and increase the service life of the rotor pump.

A frictional shift element for a motor vehicle transmission includes a first frictional element allocated to a first carrier; and a second frictional element allocated to a second carrier. One of the first frictional element or the second frictional element has an annular frictional surface, and the other of the first frictional element or the second frictional element has a corresponding frictional surface with at least one frictional surface that protrudes along a radial direction in an overlapping area.

The invention discloses a center-shaft-type cylindrical roller bearing. The center-shaft-type cylindrical roller bearing comprises an inner sleeve ring, an outer sleeve ring, a row of cylindrical waist-diameter sunken center shaft rollers and a rolling circular ring retainer; an excircle roller way of the inner sleeve ring or a roller way of the outer sleeve ring is internally sleeved with a rolling circular ring C-shaped retainer; the center-shaft-type cylindrical roller is embedded in a C opening of the rolling circular ring C-shaped retainer; the center-shaft-type cylindrical roller is fully filled with the C-shaped retainer while the outer sleeve ring is arranged. A bearing surface is increased by increasing the number of the rollers so as to improve the load capacity of the bearing; the noise is reduced by reducing the frictional surfaces of the retainer and the rollers, and the service life of the bearing is prolonged.

A railless tugger train (100) includes a train module (10), at least one transportation module and at least two axis modules, wherein each axis module has a stiffly configured axis beam, at which a first mounting device is configured in the form of a stiff mounting of the train module or a transportation module and at which a second mounting device is configured for an articulated connection of a transportation module. At least two wheels (19) are mounted at the axis beam in such a way that the wheels are each rotatable around a rotation axis (D) which is configured vertical to the longitudinal axis (L) of the axis beam.

The invention relates to a method for machining an abrasion resistance layer of a bottom curved surface of a connecting rod of a hydraulic motor. The method comprises the following steps of: 1) preparing a powder metallurgy material; 2) pressing the abrasion resistance layer; 3) removing an oxidized surface layer from the connecting rod; 4) forming a copper-plated layer on the bottom curved surface of the connecting rod; 5) welding the abrasion resistance layer to a position corresponding to the bottom curved surface of the connecting rod; and 6) sintering the abrasion resistance layer onto the bottom curved surface of the connecting rod. The method has the advantages that: the formed abrasion resistance layer has high abrasion resistance, heat resistance, friction reduction and wearing resistance performance, so that the hydraulic motor can keep long-term high lubrication performance and abrasion resistance performance during high speed running and has higher working reliability and service life; meanwhile, working resistance is reduced, the mechanical transmission efficiency is high and the bearing capacity of the motor is high; furthermore, material consumption of the abrasion resistance layer is reduced and the production cost is saved; and pollution to the environment caused by adopting babbitt metals is avoided.

The invention relates to a special water channel distribution device for a gas water heater, and aims to provide a gas water heater water channel distribution control device system and a water channel distribution device which are lower in failure rate, longer in service life and more stable in constant-temperature effect. The water channel distribution device comprises a water channel distributor, a central controller and a water flow sensor, the water flow sensor is used for detecting water inlet flow or water outlet total flow, a plurality of water channel branches are arranged on the water channel distributor and used for proportionally dividing a water channel of the water heater into a plurality of channels for distribution control, an electromagnetic valve is mounted on each water channel branch, and the water flow sensor and the electromagnetic valves are respectively and electrically connected with the central controller. The water channel distribution device is matched with a gas proportioning valve, a water inlet temperature probe and a water outlet temperature probe to form the gas water heater water channel distribution control device system, and the water inlet temperature probe and the water outlet temperature probe are used for detecting water temperatures.

A drilling mechanism of a coring drilling rig has a central rod, a fluid channel starting module, an outer barrel, an outer barrel unlocking module, a shunting module and a drill bit. The central rod penetrates the fluid channel starting module. The outer barrel unlocking module and an inner cavity of the shunting module from back to front. The fluid channel starting module is behind the outer barrel and is connected to the outer barrel unlocking module. The shunting module is in front of the outer barrel unlocking module, and a hydraulic motor is connected in front of the shunting module. The outer barrel has a driving section that is a rotor of the hydraulic motor. The outer wall of the outer barrel is fixedly connected to a centralizer, and the front end of the outer barrel is connected to the drill bit.

The invention discloses a Chinese-doughnut-shaped oil-back line oil seal which comprises an oil seal frame, a rubber elastic body and a tightening spring. The lower end of the rubber elastic body is connected to one side of the oil seal frame. The tightening spring is arranged in the rubber elastic body. A double-way crossing type oil-back line is attached to the rubber elastic body. The oil seal has high pumping effect, leakage can be well prevented, in addition, double-way oil returning can be achieved, sealing performance is improved, meanwhile, an oil line cross section is in a D shape or a semicircle shape or an arc shape, a friction face can be decreased, the abrasion resistance of a product is improved, and product performance is prolonged.

A driving system for a core drilling rig has a driving motor. The driving motor has an outer rotor and an inner stator, and mutually-matched convex ribs are provided on the inner wall of the outer rotor and the outer wall of the inner stator. The outer rotor and the inner stator are in clearance fit. A clearance between the outer rotor and the inner stator is a driving liquid channel. The length of the outer rotor is less than that of the inner stator. The outer rotor is provided between the front and rear ends of the inner stator. The outer rotor is connected to an outer cylinder. The rear end of the inner stator is connected to a coupling.

The invention relates to a device (1) for attaching an end link (2) of a chain strand (3) made of chain links (4) of a predetermined geometry. The device comprises a retaining device (5) comprising an insertion segment (7) at one end (6) that can be inserted in an opening (8) of the end link, and a retaining segment (5). The retaining segment comprises a cross section (28) on which the end link can be placed in a limited number of retaining positions, preferably only one single retaining position, from the insertion segment (7). The device further comprises a closure element (12) by which the end link can be permanently secured to the retaining device. In order to prevent tilting of the end link on the retaining device during operation, according to the invention the closure element forms a stop (14) by which a motion of the end link out of the retaining segment (10) in the direction of the insertion segment (7) is blocked.

The invention provides an engine oil control valve with a guiding structure. The engine valve control valve comprises a valve element (20), a pole shoe (6), a magnetic core shaft (8), a magnetic core (14) and an electromagnetic solenoid assembly (12). A guiding sleeve (13) is arranged between the magnetic core (14) and a rear yoke sleeve (10) on the electromagnetic solenoid assembly (12), the magnetic core shaft (8) is fixedly connected with the magnetic core (14), the guiding structure with balls (19) is arranged between the magnetic core shaft (8) and the pole shoe (6), sliding friction is adopted between one end of the magnetic core (14) and the guiding sleeve (13), and rolling friction is adopted between the other end of the magnetic core (14) and the balls (19) through the magnetic core shaft (8). A stressed supporting point of the magnetic core can be transferred to the balls, the length of the arm of force of the acting force of the valve element to the magnetic core shaft is reduced, radial loads borne by the magnetic core and the guiding sleeve on the right side of the balls are reduced, abrasion of the magnetic core and the guiding sleeve is effectively lowered, and the service life of the engine oil control valve is effectively prolonged.

This invention is a vacuum belt conveyor designed to operate inverted and move articles suspended from its lower side rather than laying on top. This is achieved by the use of a matching toothed drive roller and toothed belt having its teeth facing outward and pierced between strategic teeth with vacuum cups secured through the holes. Vacuum is applied when needed to sections of a vacuum rail spring loaded against the smooth inner surface of the belt, the rail having a machined vacuum groove in horizontal alignment with the holes in the belt to provide vacuum to the cups. The belt and suspended articles secured to it by suction are held to the main frame by two retaining rails having clearance allowing passage of the cups.

A single-row deep groove ball bearing made substantially of an inner ring and an outer ring disposed coaxially thereto and balls disposed between the rings. The balls roll in deep groove tracks in an outer face of the inner ring and in an inner face of the outer ring, and the balls are held at equal distances to each other in the circumferential direction by a housing. The interior of the bearing is sealed by two circular ring-shaped seals axially opposite each other. At least one of the seals is a lip seal, which has an angular profile. A shape-stable radial seal leg of the seal is attached to the outer ring and forms a gap seal with an axial side of the inner ring, and a sealing lip, which is an overpressure valve, is disposed under the inner ring and slidingly contacts the inner face of the inner ring.

The invention relates to an engine camshaft assembly and a motorcycle. The assembly comprises a camshaft and a pressure relief assembly; a timing component and the pressure relief assembly are respectively positioned at two ends of the camshaft; the pressure relief assembly comprises a pressure relief valve body, a centrifugal block and a fastening bolt. The engine camshaft assembly provided by the invention has the following advantages: the pressure relief valve body is pressed tightly and fixed through a bolt, a compression base plate, a flange on the pressure relief valve body and a shaft shoulder on the camshaft, the compression contact area of the flange can be increased, the reliability of fastening is ensured, the axial degree of freedom of the pressure relief valve body is restricted, and simultaneously the circumferential degree of freedom of the pressure relief valve body also can be limited to a certain extent; by virtue of the circumferential direction limit structure of the pressure relief valve body, the operation reliability of the pressure relief assembly is ensured; the mounting structure has high integration, the positioning effect is also good, and the mounting errors can be avoided better; and simultaneously the pressure relief valve body can bear, transmit and counteract the rotary inertia force and impact loading generated by the high-speed rotation of an engine, the fatigue and crack phenomena do not occur, and the service life is ensured.

A drivetrain of an electrically driven vehicle has a frictionally engaging normally closed clutch with conical friction elements, which rest against each other in pairs in a closed position and transmit torque. In addition, an electrically driven vehicle with such a drivetrain is provided.

The invention provides a locking ring for a release bearing. The locking ring comprises a ring-shaped connecting ring, a clamping lug and a lock tongue, wherein the clamping lug extends outwards along the radial direction of the outer edge of the connecting ring, and the lock tongue is vertical to the plane with the connecting ring and axially extends; the clamping lug is clamped into a corresponding clamping groove of a sliding sleeve of the release bearing, and the lock tongue is inserted into a corresponding lock groove in a shell of the release bearing. The locking ring has the advantages of simple structure and convenient processing and can further increase the lubrication level and reduce frictional loss on the basis of effectively avoiding radially rotating among the parts of the release bearing, and thus the service life of the release bearing is prolonged.