283results about How to "Reduce unsprung mass" patented technology

The invention discloses a bogie for a high-speed rail wagon. The bogie comprises a framework, wherein two transverse ends of the framework are connected with a wheel set through two single-stage suspension systems respectively; a double-stage suspension system and a foundation brake device are arranged on the framework; and the front side and the rear side of the framework are provided with an anti-snakelike damper respectively. By the bogie, two-grade requirements that the shaft weight is 16.5t when the speed of the wagon is 200km/h as well as the shaft weight is 18t when the speed of the wagon is 160km/h can be met simultaneously; and the bogie has the remarkable characteristics of simple structure, high popularity and reliable performance.

The invention relates to an unequal double-wishbone suspension wheel side driving device capable of achieving large-angle steering and belongs to the field of electric automobiles. The unequal double-wishbone suspension wheel side driving device capable of achieving large-angle steering comprises an unequal double-wishbone suspension, a driving motor, a steering motor, a universal transmission shaft, a worm and gear reducer, a bevel pinion, a transmission bevel gear, a bevel gear wheel, a brake caliper, an axle housing and wheels, wherein the driving motor and the steering motor are both fixedly arranged on an automobile frame; the driving motor drives the wheels to rotate through the universal transmission shaft and gear transmission; the bevel gear wheel simultaneously plays the role of a brake disc; and the steering motor achieves steering of automobiles through the universal transmission shaft and the worm and gear reducer; the transmission bevel gear is sleeved on a master pin in empty mode; and a worm gear is connected with the master pin through a flat key. When automobiles steer, mutually independent operation of a driving system and a steering system can be achieved by reasonably controlling the rotate speed of the driving motor. The unequal double-wishbone suspension wheel side driving device capable of achieving large-angle steering not only achieves large-angle steering, but also reduces the unsprung mass of the automobiles, and improves the flexibility of the automobiles and riding comfort.

A brake disk for a motor vehicle is provided. The brake disk includes a brake disk chamber and a friction ring arranged coaxially thereto, an outer casing surface of the brake disk chamber having a profile, which for torque transmission, engages in a complementary profile of an inner casing surface of the friction ring, and the friction ring being arranged axially secured to the brake disk chamber. At least one tab for axial securing is formed on the outer casing surface of the brake disk chamber.

The invention discloses a structure for reducing the equivalent unsprung mass of a single cross arm suspension wheel-side electric driving system; an elastic rubber is supported on a rack in a hinging way; one end of an oscillating arm of a single cross arm suspension is connected with the elastic rubber in a hinging way; the other end of the oscillating arm of the single cross arm suspension is connected with an electric machine which is fixedly arranged on a speed reducing case; the speed reducing case is connected with a half shaft sleeve pipe; a power output end of the electric machine isconnected with a pinion gear which is meshed with a main gear; the main gear is connected with the half shaft sleeve pipe; and after the electric machine is decelerated by the gears, the power is output to rims so as to drive wheels. The distance from the mass center of parts which are not concentric with the wheels to the oscillation central axis of the single cross arm suspension is reduced, namely, the equivalent unsprung mass is reduced. The structure has the advantages of reducing the equivalent unsprung mass of the wheel-side driving system so as to increase vibration frequency of the wheels, reduce resonance vibration and impact and vibration from road surfaces and improve smoothness of automobile driving.

A snowmobile suspension system connected between a skid frame positioned below a chassis of a snowmobile. A limiter strap adjustment mechanism is connected between the chassis and the at least one limiter strap and selectively adjusts the length of the at least one limiter strap. A coupling arm adjustment mechanism is connected between the chassis and at least one coupling arm and selectively adjusts the length of the at least one coupling arm. A linear force device adjustment mechanism is connected between the chassis and the linear force device for adjusting the length and angle of the linear force device relative to the at least one rear arm resulting in control of the force displacement characteristics of the at least one rear arm.

The invention discloses an 80km/h speed class B-type subway vehicle bogie, which belongs to the field of subway vehicle bogies. The subway vehicle bogie consists of a framework, a driving device arranged on the framework and used for transmitting a driving force, a primary suspension, a secondary suspension arranged on the framework and used for supporting a vehicle body, a traction device for connecting the framework and the vehicle body and transmitting a traction force and a braking force, a side rolling resistant device for connecting the framework and the vehicle body and inhibiting the side rolling tendency of the vehicle body, a base braking device arranged on a side beam of the framework and used for transmitting power, and a third rail current receptor arranged on the side beam of the framework and playing a role in current reception. The subway vehicle bogie has the advantages of excellent dynamic performance, good comfort of passengers, low noise, reliable strength, high utilization rate of traction and adhesion, good running performance, high safety and reliability indexes, and excellent maintenance performance.

The invention provides a low-power radial welding bogie comprising two wheel sets, a three-piece side welding beam and a crossbeam. Two ends of the side beam are connected with the wheel sets through primary rubber-metal pads and bearing saddles respectively. The wheel sets are connected with a wheel set connecting device through the bearing saddles. A crossbeam assembly is connected with the side beam through two secondary suspension systems. A foundation brake gear is suspended on the crossbeam assembly or the side beam. The secondary suspension systems have multiple structural styles, and the wheel sets are of variable- gauge structures. Compared with conventional freight car bogies, the low-power radial welding bogie has the advantages that the bogie is good in uniform load performance; defects of cast structure swing bolsters and side frame casting are avoided; wheeltrack acting force is reduced, and wear parts of the suspension systems are reduced; the variable-gauge wheel sets meet requirements on variable-gauge performance of the bogie; high-speed operation stability of the bogie is improved, and rim wear generated when the bogie passes curves is reduced; the bogie can meet the requirements on maximum axle load of 30t and highest running speed of 200km/h.

An in-wheel motor driving device (21) is provided with a motor section (A); a speed reduction section (B) which comprises an output shaft (28) that reduces the rotational speed of a motor rotation shaft (35) and outputs the resulting rotation, and a speed reduction section casing (22b) that forms an outer shell, this speed reduction section (B) being disposed at one location along the axial direction of the motor section (A); a wheel hub bearing section (C) which comprises a wheel hub (32) that is connected and fixed to the output shaft (28), and a wheel hub bearing outer race (22c) that rotatably supports the wheel hub (32), this wheel hub bearing section (C) being disposed at one location along the axial direction of the speed reduction section (B); and connection sections (63, 64) which are fixed to at least one of either the wheel hub bearing outer race (22c) or the speed reduction section casing (22b) and are meant to be connected to a vehicle body member.

The invention discloses a rail wagon bogie single-stage shaft housing hanging and positioning device. The rail wagon bogie single-stage shaft housing hanging and positioning device comprises a shaft housing, a vertical hydraulic buffer, spring guide pillars, steel circular springs, rubber-metal pad locators and hoisting check blocks, wherein the vertical hydraulic buffer is arranged between the top of the shaft housing and a side frame of a framework assembly; the spring guide pillars, the steel circular springs and the rubber-metal pad locators are arranged between the upper surfaces of spring bearing platforms on the two sides of the shaft housing and the bottom of the framework assembly; the hoisting check blocks are arranged below the spring bearing platforms on the two sides of the shaft housing. The two-stage threaded connection method of the spring guide pillars is of an integrated design, so that the structure is simple and compact, the performance is reliable, stable positioning performance is guaranteed, the requirements for different positioning stiffness in the vertical direction, longitudinal direction and the transverse direction are met, the unsprung mass can be reduced, wheeltrack dynamic force is lowered, and wheeltrack abrasion is reduced; an infrared shaft temperature detection hole is formed in the bottom of a saddle surface of the shaft housing, so that the shortcoming that an infrared thermometry technology cannot be adopted for an existing rail wagon bogie single-stage shaft housing in the line operation process is overcome, the bearing temperature of a rail wagon in an operating state can be detected in real time, a hot box fault caused by detection omission can be avoided, and rail transportation safety is guaranteed.

The invention discloses an integrated external rotor electric wheel integrated structure and an assembly method. The integrated external rotor electric wheel integrated structure comprises a hub motor, decelerating mechanisms, a brake, a damping mechanism, a cooling mechanism, a rim and the like. The decelerating mechanisms comprise a first-level decelerating mechanism and a second-level decelerating mechanism, a rotor of the hub motor and a gear ring of the first-level decelerating mechanism are designed as an integrated structure, and a planetary frame of the first-level decelerating mechanism and a sun wheel of the second-level decelerating mechanism are designed as an integrated structure. Power is input by the rotor of the hub motor and output to wheels through the gear ring and the planetary frame of the first-level decelerating mechanism and the solar wheel and a planetary frame of the second-level decelerating mechanism to drive a vehicle to operate. Meanwhile, a brake disc ofthe brake and the planetary frame of the second-level decelerating mechanism are designed as an integrated structure, the brake disc of the brake rotates accordingly, and a brake caliper is mounted ona shell. The cooling mechanism adopts a mode of combining splash cooling and oil passage cooling to complete the overall cooling of the motor, the decelerating mechanisms, the brake and the like. Thesystem can be widely used in various wheels using different manufacturers/models, and has high universality.

The invention discloses an anti-drag device capable of adjusting the wheel spoke hole area automatically, and relates to an anti-drag device capable of changing the hole area between spokes automatically according to the automobile speed. The anti-drag device solves the problem that the wind drag coefficient of a wheel and fuel consumption are enlarged when an automobile is driven at high speed due to the fact that air eddy is generated in a wheel cavity or positions nearby with the existence of a hole between the spokes. The anti-drag device is composed of a supporting frame, foliated cover plates and connecting transmission parts arranged between the supporting frame and the foliated cover plates, the supporting frame is fixed on a wheel hub and is located between a brake disc flange and the wheel hub, and the foliated cover plates are capable of rotating around the supporting frame. The anti-drag device does not work when the automobile speed is lower so that heat generated by frequent braking of the automobile can be emitted effectively and cannot influence the automobile. The anti-drag device is capable of decreasing the hole area between the wheel spokes automatically along with the increase of the automobile speed until the wheel hole is close to entirely closed, so that the wind drag coefficient of the automobile wheel is reduced greatly, fuel consumption is reduced, and the automobile fuel economy is improved.

The invention discloses a single trailing arm suspension deceleration type wheel electric drive system. An A-shaped single trailing arm suspension swing arm is supported at two ends of a motor shaft through a sliding bearing and a sliding bearing cover and is connected with one end of an axle; the other end of the axle is connected with a hub through a hub bearing; the hub, a rim and a brake drumare fixedly connected through a bolt; a pinion wheel is arranged on an output shaft of a motor through a flat key; and a gear wheel is arranged on the brake drum through a plurality of bolts and is engaged with the pinion wheel. The invention has the advantages that: the single trailing arm suspension deceleration type wheel electric drive system is compact and has high transmission efficiency; the driving force of each wheel is independent and controllable to facilitate the operation stability and comfort of vehicles.

The invention discloses a variable gauge bogie provided with an adjustable unit braking device. The variable gauge bogie comprises a frame composition, a variable gauge wheel pair composition, a shaft box suspension device and a composite braking device containing a disc-shaped braking device and the adjustable unit braking device. The frame composition is of a H-shaped structure, and the rhombus resistance capacity is high; through the shaft box suspension technology, the unsprung mass is reduced, and vertical dynamic performance of a vehicle is improved; by adopting a variable gauge wheel pair, the operation requirements under different gauges are met; and the composite braking device comprises the disc-shaped braking device and the adjustable unit braking device, so that the requirement of a braking heat load under large shaft weight and high speed reduction under different gauge conditions is met. The variable gauge bogie is suitable for subway tunnels and railway main track vehicles with different gauges, and has strong social and economic benefits, the transport efficiency is improved, and transferring time is saved.

Disclosed is an elastic hanging device for a journal sticking installation motor. The elastic hanging device comprises a motor end connection ring connected with the output end of a journal sticking motor rotor, an axle end connection ring connected with an axle, and elastic elements. The peripheral walls of the motor end connection ring and the axle end connection ring are provided with bosses distributed in a staggered mode at intervals. The elastic elements are fixed to the peripheries of the bosses in a coating mode and are provided with wedge-shaped blocks inserted into the gaps between the adjacent bosses. According to the elastic hanging device, the motor end connection ring is connected with the output end of the journal sticking motor rotor, the axle end connection ring is connected with the axle, the motor end connection ring and the axle end connection ring are connected through the elastic elements, the wedge-shaped rubber blocks are inserted into the gaps of the bosses and have good torque transmission, flexibility and vibration damping performance, the shifting ability is high, and power is transmitted to the axle by means of the wedge-shaped rubber blocks. Through the elastic hanging device, transmission is transmitted to the axle from the motor, a complex gear speed change mechanism is omitted in the middle, a large amount of structure space is saved, and unsprung mass is reduced.