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505results about How to "Improve braking performance" patented technology

Negative pressure control apparatus for vehicle breaking operation

A communication passage for generating braking negative pressure is connected to an air passage for respective cylinders at a downstream side of a throttle valve. An air ejector is provided in a negative pressure pipe, to which communication passages for the respective cylinders are converged. A negative pressure passage for a brake booster is connected to the air ejector at a side of suction gas via a check valve. A passage for PCV gas and an intake air branched passage for bifurcating a part of the intake air from a surge tank at an upstream side of the throttle valve are connected to a driving gas side of the air ejector, wherein a negative pressure control valve is provided in the intake air branched passage. The PCV gas and the part of the intake air are forced to flow into the driving gas side of the air ejector, so that the air ejector functions as a vacuum pump. As a result, the braking negative pressure for the brake booster can be surely reduced to a target negative pressure.
Owner:DENSO CORP +1

Method for preparing brake pad friction material by using rice and wheat straws

The invention discloses a method for preparing a brake pad friction material by using rice and wheat straws and relates to the technical field of composite materials. The brake pad friction material has the following formula: 15 percent of toughened fibers, 16 percent of modified resin, 14 percent of a friction increase agent, 9 percent of sulfur and tin powder, 1.6 percent of carbon black, 2.5 percent of zinc oxide, 8.9 percent of barium sulfate, 10 percent of rice and wheat straw carbon powder, 6 percent of aluminum hydroxide, 14 percent of modified li beads and 3 percent of zinc stearate. The materials are uniformly mixed and stirred, pressed in a mold and subjected to machining such as grinding and chamfering according to a technical requirement to obtain a braking pad. According to the method, the rice and wheat straws are used as raw materials to prepare carbon powder which replaces graphite in a friction material formula, so that the atmospheric pollution caused by severe combustion of straws in each year is alleviated, the production cost of the brake pad is reduced, and the brake performance and the braking effect are enhanced; the friction coefficient is stable; the brake pad is simple in structure, low in brake noise, environment-friendly and pollution-free.
Owner:YANCHENG XINHAO MACHINERY

Brake control system

In a brake control system for a vehicle employing a brake-by-wire (BBW) hydraulic control unit, a master cylinder serves as a first fluid pressure source and a pump serves as a second fluid pressure source operated during a BBW system normal brake operating mode. Also provided is a manual-brake hydraulic circuit capable of supplying hydraulic pressure from the master cylinder to the wheel-brake cylinder during a fail-safe operating mode. A back-flow prevention device is disposed in a pump outlet passage, intercommunicating the manual-brake hydraulic circuit and the pump outlet, for permitting free flow in one direction from the pump to the wheel cylinder. A normally-open inflow valve is disposed in the pump outlet passage downstream of the back-flow prevention device. A normally-open shutoff valve is disposed in the manual-brake hydraulic circuit upstream of the normally-open inflow valve, and unactuated and opened during the fail-safe operating mode.
Owner:HITACHI LTD

Mining elevator

A mine elevator is provided having an anti-explosion traction system, an anti-explosion lift car protection system, a flexible guide rail guiding system, a compound lift car, and a counterweight system. The anti-explosion traction system comprises a traction rope tension regulating device, an anti-explosion traction machine, and an anti-explosion control cabinet. The anti-explosion lift car protection system comprises a rope holder, a speed limiter, two hydraulic buffers, a safety clamp, a brake rope, and a brake rope tension buffer device. The flexible guide rail guiding system comprises a steel wire rope guide rail, a guide rail tension device connected to the steel wire rope guide rail and fixed to the an upper platform, a guide rail connection device connected to the steel wire rope guide rail and fixed to a lower platform, and a flexible guide rail guide sleeve fixed to the compound lift car and the counterweight system.
Owner:DONGNAN ELEVATOR +1

Brake controller and method for controlling brakes

InactiveUS20070216222A1Stabilizing braking effectivenessImprove braking performanceBrake safety systemsEngineeringBrake force
A brake controller is provided, having a braking force application mechanism that presses a friction member against a braked member so as to apply a braking force to a wheel of a vehicle; and a control unit that calculates an index indicating the difference between an estimated braking effectiveness and an actual braking effectiveness, and calculates a correction amount using the index, determines that the index is inaccurate. The control unit further limits the change in the correction amount calculated using the index, if it is determined that the index is inaccurate, and corrects a target value, which is set to control a pressing force of the friction member, based on the correction amount to reduce a variation in a braking effectiveness of the vehicle.
Owner:TOYOTA JIDOSHA KK

A kind of heat-resistant modified bamboo fiber and its method for automobile brake friction material

The invention relates to a heat-resisting modified bamboo fiber and a method for preparing an automotive brake friction material from the same. The heat-resisting modified bamboo fiber is prepared by modifying a bamboo fiber through borax. A composite friction material is prepared from the heat-resisting modified bamboo fiber, phenolic resin, inorganic whisker, a friction performance regulator and the like, so that the environmental-friendly automotive brake composite material with excellent friction coefficient, high stability, low wear rate and good heat fading resistance is obtained. Compared with an unmodified bamboo fiber, the bamboo fiber subjected to heat-resisting modification, which is disclosed by the invention, has the advantages that the heat resistance of the bamboo fiber is obviously improved; and the high temperature friction wear performance of the composite friction material prepared from the heat-resisting modified bamboo fiber is also obviously improved.
Owner:FUZHOU UNIVERSITY

Blocked-grass lower-poking and upper-cutting mechanism for cleaning grass discharging passage of hand mower

InactiveCN106034538ASolve the problem of weed blockingSolving Worldwide Problems of MalfunctionMowersAgricultural undercarriagesLogarithmic spiralMower
The invention relates to a blocked-grass lower-poking and upper-cutting mechanism for cleaning a grass discharging passage of a hand mower. According to the blocked-grass lower-poking and upper-cutting mechanism, a lower poking mechanism is mounted on a rear shaft of the bottom of the mower, and meanwhile, an upper cutting mechanism is mounted at a grass discharging port of the grass discharging passage of the mower; the lower poking mechanism contains grass discharging blades (j1) and direction-changing bevel gears (j2), the rotating direction of a third direction-changing bevel gear is reverse to that of a first direction-changing bevel gear and that of the rear shaft, and thus, the rotating and direction changing of the grass discharging blades (j1), which are connected with the third direction-changing bevel gear and sleeve the rear shaft, are achieved; and the upper cutting mechanism contains upper cutting blades (j3) and a belt-pulley belt (j4), and a rotating shaft of the upper cutting blades (j3) is driven by the belt-pulley belt (j4). The direction-changing bevel gears are Klingen-Berg cycloidal-tooth hypoid gears. At least one of the upper cutting blades (j3) of the upper cutting mechanism of the blocked-grass lower-poking and upper-cutting mechanism for cleaning the grass discharging passage of the hand mower has a bent segment, and a curve of the bent segment is a logarithmic spiral which has the characteristic that pressure angles are equal everywhere.
Owner:NINGBO DAYE GARDEN EQUIP

Automatic grass discharging passage cleaning mechanism of rear shaft of bottom of mower

InactiveCN106034537ASolve the problem of weed blockingSolve world problemsLawn-mowersGear wheelEngineering
The invention relates to an automatic grass discharging passage cleaning mechanism of a rear shaft of the bottom of a mower, i.e., a lawn mower which is applied to the lawn pruning of places such as courtyards, parks and road sides. The automatic grass discharging passage cleaning mechanism can be applied to multiple models such as a three-wheeled mower, a series-excited-machine electric mower and a lawn mower, wherein the three-wheeled mower is provided with a grass mowing head, and a front single wheel of the three-wheeled mower is adjusted upwards in a manner that gear engaging is carried out through turning an angle by a flat bar; the series-excited-machine electric mower is provided with a chassis, an anti-collision safeguard and a tape-function wave-disc brake; and the lawn mower comprises an anti-collision safeguard, a tape-function wave-disc brake, a grass blockage poking device and a grass crushing preventer, wherein the anti-collision safeguard is arranged at the front of a chassis of the mower, the tape-function wave-disc brake is arranged at the middle part of the chassis of the mower, and gears of the grass blockage poking device and the grass crushing preventer are driven by an electric motor. The automatic grass discharging passage cleaning mechanism is mounted on the rear shaft of the bottom of the mower. The automatic grass discharging passage cleaning mechanism of the rear shaft of the bottom of the mower comprises grass discharging blades (j1) and direction-changing bevel gears (j2), so that the rotating and direction changing of the grass discharging blades are facilitated.
Owner:NINGBO DAYE GARDEN EQUIP

Automotive copper-based powder metallurgy composite friction material and manfuacturing method thereof

The invention discloses an automotive copper-based powder metallurgy composite friction material and a manufacturing method thereof. The manufacturing method includes that firstly, a basis powder material is mixed with a molding agent uniformly to obtain a mixture, the mixture is poured into a mold and is shaped into slender rods by pressing, the slender rods are compacted and separated and then charged into a sintering furnace, and the sintering furnace is heated up under protection of nitrogen gas or hydrogen gas so that a copper-based powder metallurgy friction material is obtained; secondly, the copper-based powder metallurgy friction material is subjected to processes of shearing, grinding and screening; thirdly, by mass percent, 10-20% of cashew nut oil modified phenolic resin, 30-60% of the copper-based powder metallurgy friction material, 10-20% of reinforced fibers, 5-15% of abrasives, 10-20% of lubricants and 5-20% of fillers are mixed uniformly to obtain a powder mixture, and the powder mixture is then subjected to hot press molding, is cooled to the room temperature and then is discharged from the furnace. The automotive copper-based powder metallurgy composite frictional material has both advantages of high temperature resistance and low abrasion as the copper-based powder metallurgy friction material and high ductility and low hardness as the resin-based composite friction material.
Owner:SOUTH CHINA UNIV OF TECH

Series motor electric mower with chassis anti-colliding protector and function wave disc brake

ActiveCN102783307ASolving Worldwide Problems of MalfunctionSolve world problemsLawn-mowersDisc brakeMower
A series motor electric mower with a chassis anti-colliding protector and a function wave disc brake comprises the anti-colliding protector arranged on the front portion of a mower chassis, the brake arranged in the middle of the mower chassis, a grass beating head and a winder. When outer covering rubber skin of a movable support is collided at the front so that a sliding rod of the movable support is retracted, a limit switch is triggered so as to resist collision. The function wave disc brake comprises uneven disc pieces fluctuating according to wave-shape heights so as to be favorable for braking in alternate tension with relaxation, and parameters of the function wave disc brake are formed by computer molding. The brake is further provided with an axial shaft disc of a friction block gradually lifted according to functions, a belt pulley and a radial centrifugal throwing block, wherein the belt pulley is provided with internal multiple inner teeth, and the radial centrifugal throwing block is provided with multiple arc-shaped teeth. The series motor electric mower has the advantages that the anti-colliding safety and braking effect are reinforced, mowing and grass beating are selectable, and a moving area is large.
Owner:NINGBO DAYE GARDEN EQUIP

Studless tire

A studless tire capable of suppressing a vehicle from staggering at the time of braking on icy and snow-covered roads, including a tread portion 2 provided with at least six block rows R1 to R4, wherein each block B is provided with sipes having a depth of at least 3.0 mm, and the block rows comprises at least two crown block rows CR disposed in a crown region Ac extending from the tire equator C as its center to have a width of 50% of the tread width TW, and at least two shoulder block rows Sh disposed on each axially outer side of the crown block rows CR, and wherein lateral grooves 4 provided in a block row are inclined in the opposite direction, with respect to the axial direction, to lateral grooves provided in an axially adjacent block row.
Owner:SUMITOMO RUBBER IND LTD

Powder metallurgy brake lining for CRH5 (China railway high-speed) motor train unit

ActiveCN103470665ATotally reliable brakingEasy to replaceFriction liningPowder metallurgyBrake lining
The invention relates to a powder metallurgy brake lining for the CRH5 (China railway high-speed) motor train unit. The powder metallurgy brake lining is characterized by comprising 5 brake lining friction bodies, 1 dovetail block, 1 steel back plate, 5 rivets, 5 large gaskets, 5 small gaskets, 5 butterfly-shaped shrapnels, 15 cotter pins and 6 flush head rivets; the 5 friction brake lining bodies are fastened at the front part of the steel back plate; each brake lining friction body is formed by an equilaterally triangular friction body skeleton with three arc chamfers and a friction body; the section of the dovetail block is in a W-shaped long plate structure; the steel back plate is in an irregular hexagonal plate structure; the back of the steel back plate is connected with the dovetail block; the front part of the steel back plate is riveted with the 5 brake lining friction bodies by the large gaskets, the small gaskets and the butterfly-shaped shrapnels at intervals; all pin joint holes in the steel back plate are respectively connected with one ends of the cotter pins; the other ends of the cotter pins are correspondingly suspended in guide holes in all friction body skeletons. Process holes are formed in the upper, lower and arc edges of the steel back plate.
Owner:北京浦然轨道交通科技股份有限公司 +1

Method and apparatus for transitioning a heavy equipment hauling rear loading trailer between transport and loading positions

ActiveUS20090108562A1Minimize any apexMinimizes and eliminates any concentration of loadTractor-trailer combinationsHand carts with one axisHeavy equipmentVertical axis
A lowboy trailer is described having a pair of rear wheel assemblies mounted to a chassis of the trailer for movement between transport and loading positions such that the wheel assemblies are aligned across a back of the body when they are in the transport position and raised and positioned outwardly when the chassis is in the loading position. A linkage mechanism moves each of the wheel assemblies between the transport and loading positions. Each linkage mechanism automatically fastens the wheel assembly to the chassis of the trailer when the assembly is moved to its transport position. In operation, each of the wheel assemblies is moved from its transport position to the loading position by first moving to an intermediate raised position. By moving the wheel assemblies to the raised position they are automatically unfastened from the chassis and freed to move outwardly about a vertical pivot axis. Also, by raising the wheel assemblies, the back end of the chassis is lowered to the ground, which is the loading position for the trailer. To return the trailer to its transport position, the rear wheel assemblies are moved inwardly about the vertical axes so as to bring the assemblies back to their intermediate raised position. Then the wheel assemblies are lowered so that each of them automatically fastens to the body, thereby preventing lateral movement of the assemblies as the trailer moves into its transport position.
Owner:HAGENBUCH LEROY G

Automotive iron-based powder metallurgy composite frictional material and manufacturing method thereof

InactiveCN105778405ALow wear toughnessReduce hardnessPowder mixturePowder metallurgy
The invention discloses an automotive iron-based powder metallurgy composite frictional material and a manufacturing method thereof. The manufacturing method includes that firstly, a basis powder material is mixed with a molding agent uniformly to obtain a mixture, the mixture is poured into a mold and is shaped into slender rods by pressing, the slender rods are compacted and separated and then charged into a sintering furnace, and the sintering furnace is heated up under protection of nitrogen gas or hydrogen gas so that an iron-based powder metallurgy friction material is obtained; secondly, the iron-based powder metallurgy friction material is subjected to processes of shearing, grinding and screening; thirdly, by mass percent, 10-20% of cashew nut oil modified phenolic resin, 30-60% of the iron-based powder metallurgy friction material, 10-20% of reinforced fibers, 5-15% of abrasives, 10-20% of lubricants and 5-20% of fillers are mixed uniformly to obtain a powder mixture, and the powder mixture is then subjected to hot press molding, is preserved at the temperature of 150-180 DEG C, cooled to the room temperature and then discharged from the furnace. The automotive iron-based powder metallurgy composite frictional material remains the stable friction coefficient and good abrasive resistance of the conventional powder metallurgy friction material, service life of the friction material is prolonged and its high-temperature stability is also improved.
Owner:SOUTH CHINA UNIV OF TECH

Mower comprising chassis blade broom and having blowing/suction, irrigation, fertilization, pesticide spreading and braking functions

PendingCN104838799ASolve the problem of double failureImprove braking performanceMowersEngineeringFan blade
The invention provides a mower comprising a chassis blade broom and having blowing/suction, irrigation, fertilization, pesticide spreading and braking functions. The mower is a multifunctional mower comprising a logarithmic spiral brake with an anti-corrosion guard and a pipe winder with liquid pipelines for irrigation, fertilization and pesticide spreading; four major assemblies, namely a support assembly with a charger and an inverter for a storage battery, a cutting device assembly dragged by a series excitation motor, a pipe winder assembly for irrigation, fertilization and pesticide spreading, and a brake assembly and a cutting device assembly, are additionally arranged on a common lawn mower; due to the addition of the irrigation, fertilization and pesticide spreading functions, the mower is wide in application range and large in movement area; a liquid fertilizer for fertilization in the pipe of the pipe winder is formed by adding a soluble fertilizer or pesticide to water in percentage. The dust collection bag support (35) of a blowing/suction unit arranged on the mower is connected with a dust collection bag (36) and a pipeline is connected with a grass collection arranged on the rear part of the mower. A blowing/suction fan blade (231) is arranged on a mowing cutter arranged on the chassis of the mower and a broom (232) is arranged to realize direct blowing, suction and sweeping.
Owner:NINGBO DAYE GARDEN EQUIP
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