68results about How to "Guaranteed coefficient of friction" patented technology

A toroidal type stepless transmission where a carrier (100) and a disk (2) are in direct friction contact with each other to allow power transmission between the carrier (100) and the disk (2) by friction force. Accordingly, the transmission does not require processing of gears and claws on the disk or the carrier, which has been required conventionally. As a result, production processes are reduced to enable a considerable reduction in production costs.

The invention discloses a high-performance composite brake disc material, the wear resistant material comprises the following raw materials: bisphenol a novolac epoxy resin, diaminodiphenyl sulfone, hollow microspheres, a lubricant, a silane coupling agent, diamine, an imidazoles compound, an anti-oxidant, chloroprene rubber powder, alumina and reinforced fibers. The reinforced fibers can be a mixture of zylonite fiber, aramid fiber, cotton fiber and ramie fiber; the interface combination of fiber and particles in the materials is good, and the fiber and particles in the materials enable synergistic interaction with antimonony oxide and graphite, generation of thermal decomposition, heat attenuation and heat cracks phenomena can be effectively reduced, thermal conductivity of the materials is good, heat generated when brake friction is carried out can be timely radiated, brake disc surface temperature can be rapidly reduced, high temperature heat attenuation is reduced, hollow microspheres, the lubricant, the silane coupling agent and the enhance fiber are specific, friction coefficient of the wear resistant materials can be enhanced by intermolecular cooperation of the substances, and stability of the friction coefficient can be improved simultaneously.

In a belt for a continuously variable transmission, a first line on a lower edge of an element body of a metal element is determined, and a second line straightforwardly connecting a lower end of a V-face to which a load is applied from a V-groove in a pulley and an inner end of a saddle surface is determined, so that when a downward load is applied from a metal ring assembly to an outer end of the saddle surface, the folding-resistant strength of the element body is uniform laterally. The position of the recess is determined in the vicinity of a point of intersection of the first and second lines. The lower edge of the element body is defined by the first line inside the recess and by the second line outside the recess. The durability of the metal element can be enhanced by devising the shape of the lower edge of the element body of the metal element in this manner.

The invention discloses annular warehouse logistics intelligent handling equipment adopting circle distance trajectory pushing, padding and press buckling. The annular warehouse logistics intelligenthandling equipment structurally comprises a plunger tray support, a wide-opening cylinder groove, a shell cover, a front baffle, a scanning detection panel, a bottom frame base plate and moving wheels. According to the annular warehouse logistics intelligent handling equipment, by using the plunger tray support and the scanning detection panel in cooperation, with a torus surface lifting effect, acircular surface is opened to the largest area for padding, padding sector plates can effectively extend in output, and an automatic detection and adjustment lifting effect of large logistics boxes is achieved; in cooperation with an arc buckle convex rubber block, the effect that the circular surface slidably pushes out goods by 360 degrees along the circle center for annular warehouse placementis achieved, the stability of axially thickly holding a plunger for pushing lifting is formed for a whole clamping supporting column base, and the friction coefficient is increased; and besides, thesliding pressure is reduced, the damping value is increased, the angular velocity precision of lifting rotation of a robot is ensured, uniform motion at a transverse pushing linear velocity in a second step is also realized, and the flexible lifting placement operation of logistics intelligent handling on square storage cabinets and annular storage is improved.

A movable friction type central guardrail and its manufacturing method, comprising a plurality of guardrail segments, the bottom surface of the guardrail segment is slidingly connected with the road, and the bottom surface of the guardrail segment is provided with a friction surface to improve friction with the road, The head and tail ends of the adjacent guardrail segments are hinged by connectors, so that the adjacent guardrail segments can slide and rotate relative to each other around the hinge point on the road. This device adopts double-slope cross-section guardrail segments to lift the center of gravity of the vehicle after the collision , relying on the connecting pins to realize the continuity and guiding ability of the guardrail, using the friction between the guardrail and the ground and the relative lateral movement between the guardrail and the ground to realize the buffering and energy dissipation in the process of the vehicle colliding with the guardrail, which is good for small cars and large cars The anti-collision ability can greatly reduce the damage of the vehicle and the occupants have higher safety.

The invention provides a covered wire rope for a running wire, having good flexibility against bending, prevented from abrasion caused by the contact of wires of a core rope and side members with each other, the contact of the core rope with the side members and the contact of the side members with each other, and achieving good transmission of driving force to a sheave and silence. The core ropehas a core rope body having a synthetic resin core and two or more side strands arranged around the resin core and twisted so as to have spaces between them at one or more parts, and a resin coveringlayer including the core rope body. The side member has a synthetic resin core and two or more strands or wires twisted around the core. The resin covering layer has spacer parts at the outer periphery, and uniform spaces are formed among respective side members by the spacer parts. A resin layer integrated with the resin layer of the outer layer, going over the circumcircle of the side member fills the spaces, and also fills the spaces among the strands or wires of each of the side members.

The invention discloses a cavity filter, which comprises a cavity, a cover board and a tuning self-locking bolt, wherein the cover board is used for closing the cavity of the cavity filter; the cover board comprises a cover board body; the cover board body is made of an aluminum product; a tuning threaded hole is formed in the cover board body and specifically is a lug boss which extends towards the direction of the cavity and is molded integrally with the cover board body; the tuning self-locking bolt is divided into a head part and a rod part and is fabricated by copper; the head part is arranged at one end of the bolt; the rod part is arranged at the other end of the bolt; two sets of threads are arranged on the head part of the bolt to form screws; the upper and lower two sets of threads are the same in diameter L and screw pitch P; and the diameter of the part between the two threads is 40%-70% that of the rod part. The cavity filter disclosed by the invention has the advantages of low cost and tuning performance.

The invention discloses a preparation method of a high abrasion resistance and high heat resistance automobile clutch surface, and relates to the technical field of clutch surface preparation. The preparation method specifically comprises the following step of S1 preparation of a friction surface material, specifically, 2-5 parts of high manganese steel alloy, 2-5 parts of tungsten carbides, 2-5 parts of chromium carbides and 5-8 parts of silicone rubber are selected respectively. Through the preparation method of the high abrasion resistance and high heat resistance automobile clutch surface,the abrasion resistance of the clutch surface is improved through a metallic inorganic material, and meanwhile the heat conducting effect is also improved, so that the abrasion resistance performanceand the heat resistance performance of the clutch surface are greatly improved; the phenomenon that the clutch surface can generate high heat so that the physical property of the clutch surface can be changed in the long-time using process is avoided, the friction coefficient of the clutch surface is guaranteed, the phenomenon that the friction performance of the clutch surface is changed to be poor or lost is prevented, and the heat conducting performance of the clutch surface is improved while the friction performance of the clutch surface is improved.

The invention discloses a wear-resisting weak-abrasiveness bionic tool joint, which is characterized in that a plurality of pit unsmooth structure units which are regularly distributed are arranged on a bionic wear-resisting belt of the tool joint, each pit unsmooth structure unit is internally provided with a convex-hull-shaped unsmooth structure unit, the depth of the pit unsmooth structure unit is identical to the overall height of the convex-hull unsmooth structure unit, the aperture of each pit unsmooth structure unit is 0.001 to 0.1mm smaller than the diameter of the convex-hull unsmooth structure unit, the top of each pit unsmooth structure unit is in arc transition of a pit prismatic surface to be connected together with the low-friction-coefficient high-wear-resisting convex-hull unsmooth structure unit in an interference fit way to form a wear-resisting unsmooth structure surface, and the top surface of the combined convex-hull unsmooth structure unit is leveled to the surface of the tool joint. The wear-resisting weak-abrasiveness bionic tool joint has characteristics that the service life of a drill pipe is prolonged, the abrasion on a bushing is reduced, the anti-viscosity is strong, the wear resistance of the drill pipe is improved, and the like, and can effectively reduce the underground accident, improve the drilling quality and save the drilling cost.

The invention discloses a cavity filter, which comprises a cavity, a cover board and a tuning self-locking bolt, wherein the cover board is used for closing the cavity of the cavity filter; the cover board comprises a cover board body; the cover board body is made of an aluminum product; a tuning threaded hole is formed in the cover board body and specifically is a lug boss which extends towards the direction of the cavity and is molded integrally with the cover board body; the tuning self-locking bolt is divided into a head part and a rod part and is fabricated by copper; the head part is arranged at one end of the bolt; the rod part is arranged at the other end of the bolt; two sets of threads are arranged on the head part of the bolt to form screws; the upper and lower two sets of threads are the same in screw pitch P; the diameter of the upper thread is greater than that of the lower thread; and the diameter of the part between the two threads is 40%-70% that of the rod part. The cavity filter disclosed by the invention has the advantages of cost and tuning performance.

The invention relates to a multi-rope friction hoisting rope oiling device and an implementation method thereof. The multi-rope friction hoisting rope oiling device comprises a split type fixed seat frame, an oil filling box, a medium-frequency induction heating device, an oiling device and a central control processor; by arranging the central control processor and connecting the central control processor with a liquid level detector, a clamping device, a hoisting machine, a speed detector, the medium-frequency induction heating device, a diameter detector, a temperature detector and the oiling device, the medium-frequency induction heating device is controlled to select the corresponding preheating temperature according to the diameter of a steel wire rope, the hoister is controlled to enable the steel wire rope to move at the designated speed, and whether grease in the oil filling box seeps outwards or not is monitored in the oiling process of the steel wire rope; and when the deviceaims at the steel wire ropes of different diameters, all the components are controlled to select the corresponding operation parameters so that the device can complete oiling of the steel wire ropesof different diameters, and the oiling efficiency of the device on the steel wire ropes of different diameters is improved.

The invention discloses a high-strength and low-abrasion automobile brake pad. The high-strength and low-abrasion automobile brake pad is characterized in that a raw material comprises, by weight, 12-15 parts of nitrile rubber, 15-20 parts of tyre powder, 6-8 parts of polytetrafluoroethylene, 3-5 parts of graphite, 2-4 parts of calcium carbonate, 4-6 parts of modified phenolic resin, 1-1.5 parts of a friction increase agent, 2-3 parts of calcined coke, 0.6-0.8 part of zirconium silicate, 0.8-1.2 parts of lead sulfide, 2-4 parts of mixed fibers and 2-4 parts of titanium dioxide. By means of recycling of the tyre powder in the high-strength and low-abrasion automobile brake pad, waste can be fully utilized, resources and energy can be recycled to create economic benefits, and the beneficial effect of being high in carbon content and porosity is achieved; the friction coefficient and the service life are guaranteed through the mixed fibers, and meanwhile brake noise can be effectively absorbed in the brake process; and the manufactured brake pad is good in abrasion resistance and small in high-speed and high-temperature declining, the average friction coefficient is 0.30 mu, the friction coefficient during automobile high-speed braking is 0.30 mu, and the friction coefficient and safety are high.

The invention provides a synchronous ring of a car gearbox synchronizer. A large number of axial oil grooves are machined in the inner cone face of the synchronous ring. The tooth top width of each axial oil groove is 0.30-0.45 mm. The width of each oil groove is 0.7-1.0 mm. The oil groove section area of the axial-dense oil groove synchronous ring is larger than the section area of an existing synchronous ring thread groove, so that the oil dispersing gap is enlarged, oil dispersing effect is improved, oil discharging performance is improved, gear shifting performance is improved, abrasion cannot happen easily, and the gear shifting performance of the synchronous ring is effectively improved, and the service life of the synchronous ring is effectively prolonged.

The invention relates to the field of friction devices, in particular to a powder metallurgy material and a friction body and a friction disc applied by the same. The powder metallurgy material is applied to the friction disc; and through application of the powder metallurgy material to the friction disc, as the powder metallurgy material is better in temperature resistance compared with an organic resin material, the temperature resistance of the friction disc can be improved, and the service life of the friction disc can be prolonged to a certain extent.

The invention discloses a tuning self-locking bolt, which is applied to a cavity filter. The tuning self-locking bolt is divided into a head part and a rod part and is fabricated by copper; the head part is arranged at one end of the bolt; the rod part is arranged at the other end of the bolt; the rod part extends into the cavity of the filter to tune radio frequency parameters; the head part fixes the self-locking bolt on a cover board of the filter; the top end of the head part is provided with a receiving groove which is used for receiving a screw driver and screwing the tuning bolt into the cavity filter according to the drive of the screw driver; two sets of threads are formed in the head part of the bolt to form screws; the diameters of the screws formed by the threads are greater than or equal to M4; the two sets of threads are not connected with each other; the upper and lower sets of threads are the same in screw pitch P; the diameter of the upper thread is greater than that of the lower thread; the diameter ratio of the upper thread to the lower thread is (1.01 to 1) to (1.1 to 1); and the diameter of the part between the two threads is 40%-70% that of the rod part. The bolt disclosed by the invention has a relatively good self-locking effect.

The invention relates to a torque wrench. The torque wrench comprises a handle, and the front end of the handle is fixedly connected with a connection head; the connection head is provided with a connection hole, a sleeve is installed on the inner wall of the connection hole, and an installation plate is fixedly connected to the inner wall of the sleeve; a plurality of sets of installation holes are uniformly formed in the installation plate at intervals, and the inner walls of the installation holes are fixedly connected with installation pipes; the inner walls of the installation pipes are fixedly connected with baffles, stop rods are slidably connected into the inner walls of the two ends of the installation pipes, and abutting springs are installed in the two ends of the installation pipes; by fixedly connecting the installation plates to the inner walls of the sleeves, the installation pipes are fixedly connected into the installation holes, by slidably connecting the stop rods into the installation pipes, during using, the sleeves are arranged on a bolt head in a sleeving mode, the bolt head drives the stop rods to compress the abutting springs, the side walls of the stop rods which are not compressed abut against the side wall of the bolt head, thus, an operator can tighten bolts different in specification conveniently, and the quantity of wrenches needing to be carriedby an operator is decreased.

The invention relates to a double-V-shaped floating self-aligning supporting structure which comprises two supporting frame combinations and an arc-shaped positioning seat. The two supporting frame combinations are fixed to an arc-shaped positioning seat of a grinding machine through bolts, each supporting frame combination comprises a supporting frame, a supporting seat and a supporting head, wherein an adjusting screw is rotationally arranged on the supporting frame, the supporting seat is movably connected with the supporting frame through the adjusting screw, the supporting head is rotationally connected with the supporting seat through a pin, the supporting head comprises a supporting block, and the supporting block is made of polycrystalline diamond PCD or polycrystalline pure diamond CVD. The machining method of the supporting blocks comprises the following steps of conducting scanning and ablating by adopting an ultraviolet laser, and ablating a wedge groove of an array microstructure on the upper surface of the supporting block. According to the double-V-shaped floating self-aligning supporting structure, the machining precision of a bearing ring is guaranteed, meanwhile,the obvious appearance defects of spots, uneven local color and luster and the like generated by an outer diameter surface phosphating film during rolling path grinding of the bearing ring in the prior art are overcome, and therefore the appearance quality of a bearing meets the requirements of customers.