66results about How to "Flexible braking" patented technology

The invention relates to an automotive anti-lock braking and braking energy feedback integration control hardware-in-the-loop test bed, which comprises a front braking gas path, a rear braking gas path, and a braking control unit, wherein the front braking gas path comprises a gas source, a gas storage cylinder and a front braking feedback regulation valve which are orderly and serially connected, and a gas outlet end of the front braking feedback regulation valve is connected with two gas paths which consist of a front ABS electromagnetic valve, a front braking gas chamber and a front brake respectively and are serially connected; the rear braking gas path comprises a gas source, a gas storage cylinder and a rear braking feedback regulation valve which are orderly and serially connected, and a gas outlet end of the rear braking feedback regulation valve is connected with two gas paths which consist of a rear ABS electromagnetic valve, a rear braking gas chamber and a rear brake respectively and are serially connected; and the braking control unit comprises pressure sensors, a wheel speed sensor, a host, an Autobox, a data acquisition and signal emission system connected with the Autobox, an electronic control unit and a bench. The test bed can simulate mixed-power commercial vehicles with air pressure braking systems, and perform braking control and research on the mixed-power commercial vehicles.

The invention relates to a device for rapidly collecting and releasing boats, which comprises a collecting and releasing arm structure, an aligning device, a decoupler, a sling and a winch, wherein one end of the collecting and releasing arm structure is connected with a mother ship and the other end of the collecting and releasing arm structure can be extended or retracted in a suspending way to provide a force applying fulcrum for collecting and releasing the boats; the aligning device is connected at the other end of the collecting and releasing arm structure and is used to align with the lifting and the lowering positions of the boats on sea surface; the decoupler is limited on the aligning device and is used to be connected with the boats; one end of the sling penetrates through a pulley fixed on the collecting and releasing arm structure in a winding way, is connected with the decoupler and is used to transmit pulling force to the decoupler; and the winch is connected with the other end of the sling to provide pulling force for collecting and releasing the boats. The device is a collecting and releasing device with complete functions and can be used to stably and rapidly lower down the boats to sea surface from the mother ship under force-seven wind sea conditions or to collect the boats back to the mother ship from sea surface.

The invention relates to a superposed-permanent-magnet-motor-based electrical vehicle drive control system, which comprises a brake pedal and an accelerator pedal of an electrical vehicle, a superposed permanent magnet motor having at least two phase windings, a driving motor for driving the electrical vehicle to run, a power supply module, a control module, a power conversion module, a brake pedal angle sensor, an accelerator pedal angle sensor, a current sensor for detecting current in the phase windings, a position sensor for detecting the position of the rotor of the motor, and a speed sensor for detecting the speed of the motor, wherein the drive signal output end of the control module is connected with the input end of the power conversion module, and the power conversion module is connected with the windings of the motor; the signal output ends of the current and speed sensors are connected with the corresponding signal input ends of the control module respectively; and the brake pedal angle sensor and the accelerator pedal angle sensor are connected to the corresponding input ends of a controller by buses. In the invention, the electrical braking torque is large, the braking is flexible, and the regenerated power return efficiency is high.

The invention discloses a liquid expander comprising a bearing box, a rotor, a spray nozzle assembly and an expander casing. The liquid expander is characterized in that the spray nozzle assembly comprises a spray nozzle press plate, a spray nozzle cover, a spray nozzle vane, a spray nozzle turntable and a spray nozzle chassis, wherein the spray nozzle cover, the spray nozzle vane and the spray nozzle turntable are sequentially connected together in an axial direction by a cylinder pin, and the spray nozzle press plate and the spray nozzle cover are elastically connected in the axial direction; the spray nozzle turntable is connected on the external diameter of a step circle of the spray nozzle chassis in a circumferential rotation way; both axial ends of the spray nozzle chassis are respectively connected with the expander casing and the bearing box; a middle component is arranged between the bearing box and the axial direction of the spray nozzle chassis; the rotor comprises a main shaft, the front part of the main shaft is provided with an oil thrower, and the back part of the main shaft is provided with a shaft coupling; shaft necks at both sides of the main shaft are fixed inthe bearing box in a rotation way, and the front end of the main shaft passes through the spray nozzle and the middle component and is connected with an impeller;]the oil thrower is positioned at theposition of the middle component in the axial direction; and a position from the wheel back side of the impeller to the main shaft section of the oil thrower is provided with a shaft sealer in the axial direction, and the shaft sealer has a compound sealed structure.

The invention provides a braking control method and device and an electric drive vehicle; the method is applied to the electric drive vehicle and comprises the following steps: detecting a brake system of the vehicle; sending a braking request to a vehicle-mounted control panel when a brake system fault is detected; enabling the vehicle-mounted control panel to display a selection interface containing at least one braking instruction according to the braking request; receiving the braking instruction sent by the vehicle-mounted control panel, wherein the braking instruction is sent by the vehicle-mounted control panel when detecting a preset operation on the selection interface; controlling a motor of the vehicle to carry out reverse dragging braking according to the braking instruction. According to the braking control method, the vehicle-mounted control panel serves as a channel for communication between a driver and a vehicle when the brake system breaks down, so the driver can control reverse dragging brake of the motor through the vehicle-mounted control panel; flexible, safe and reliable braking of the vehicle is achieved, and safe driving of the vehicle is achieved.

The invention discloses an engine in-cylinder braking mechanism and a method, belongs to the technical field of engine braking, and aims at solving the problems that an existing in-cylinder braking mechanism cannot achieve secondary compression release braking in the exhaust stroke and is low in braking efficiency. According to the technical scheme of the engine in-cylinder braking mechanism, the engine in-cylinder braking mechanism comprises a shell body, a hydraulic piston and a braking piston are arranged in the shell body, the hydraulic piston is connected with an exhaust valve I and an exhaust valve II through a valve bridge, the exhaust valve II is connected with the braking piston, the hydraulic piston is connected with an exhaust tappet through an exhaust oil way, the braking piston is connected with a braking tappet through a braking oil way, and the exhaust oil way and the braking oil way are both connected with a change-over valve. The change-over valve can control one of the exhaust oil way and the braking oil way to be disconnected so as to switch between the exhaust state and the braking state, and two times of compression release brake of an engine in one working cycle are achieved.

A well repairing truck is composed of truck frame, driver cab, engine system, front, middle and back bridges, hydraulic oil tank, speed varying gear, winder, operating cab, the drive system consisting of power output unit, speed variator, primary and secondary hydraulic motors, commutation valve, hydraulic pump, power unit, winder, etc, the hydraulic system consisting of winder, primary and secondary hydraulic motors, energy accumulating pump, master control valve set, energy accumulator, hydraulic pump and power unit, and the electronic control system.

The invention discloses a motor car. The motor car comprises a carriage, a steering wheel and a power wheel which are respectively arranged at the front end and the back end of the carriage, a bumper arranged in the front and a motor mechanism, wherein both sides of the middle part of the carriage are respectively provided with a support arm and an auxiliary wheel arranged at the end part of the support arm, a support wheel is connected with a steering device, the steering device is connected with a synchronizing steering mechanism, the two auxiliary wheels are connected with a balancing device, both sides of the carriage are provided with air pressure deflectors, and the carriage is provided with a hood. The motor car runs more stably and has larger loading capability compared with the traditional motorcycle, is more energy-saving than a tricycle and a compact car, and overcomes the disadvantages that the traditional motorcycle has no cab, can not run stably at a low speed and the like; the bumper in the front of the car body adopts the hydraulic cushion technology, thereby ensuring the safety and the application of the motor car; and the motor car is provided with an emergency braking device, thereby enabling the brake to be more sensitive.

The invention discloses a transmission brake based on a clutch actuating mechanism, wherein the transmission brake comprises a clutch separation bearing, a sensing driving device and a brake device, wherein the sensing driving device is connected with the clutch separation bearing; the brake device is arranged between transmission intermediate shafts and a transmission shell; and the sensing driving device is adaptive to the brake device. According to the transmission brake based on the clutch actuating mechanism, friction devices are installed on the shaft heads of two intermediate shafts; and the brake response is rapid, and the transmission brake based on the clutch actuating mechanism is stable and is high in intensity.

The invention discloses a linear motor permanent magnetic brake. The linear motor permanent magnetic brake comprises a static iron core assembly and a moving plate assembly, wherein the static iron core assembly comprises multiple coils embedded in the static iron core; the upper portion of each coil is provided with a magnet yoke and magnet steel; the moving plate assembly comprises a fixed plate and a movable plate which are spaced by a spring sheet; and the fixed plate is placed above the magnet yokes and the magnetic steel. The linear motor permanent magnetic brake has the following advantages: 1, linear internal contracting brake is realized, the volume is small, and the weight is light; 2, the processing is simple, and the installation and maintenance are simple; 3, the connection is reliable, the brake is flexible, automatic control and long-distance operation of a work mechanism can be realized, and the brake time is extremely short; 4, the control power is small, and the service life is long; 5, the performance is stable, and the safety and reliability are high; 6, the structure is simple and compact, the operation is simple, and accurate combination can be guaranteed in quite short time; 7, diversified combination and application can be realized through adjusting features of the coils and the magnetic steel; and 8, the linear electromagnetic brake does not need motion at all, apart from an electromagnet, a brake using a permanent magnet does not need electric power, and thus the space and the efficiency can be reduced.

The invention discloses a dual-power driven flexible assembled transport trailer, belongs to the technical field of road transport machinery and relates to a dual-power driven traction super-huge type truck with a plurality of freely grouped carriages for transportation. The trailer comprises a main vehicle and carriages, and is characterized in that: a fuel driving device and a power driving device are arranged on the main vehicle; the fuel driving device and/or the power driving device are arranged in the carriages; a solar-cell panel, a wind driven generator, a super capacitor, a storage battery and a motor are arranged inside the power driving device; the solar-cell panel and the wind driven generator are connected with the super capacitor respectively; the super capacitor is connected with the storage battery; the storage battery is connected with the motor; and the main vehicle and the carriages and adjacent carriages are in overlapped connection through a flexible hinge device. By adopting dual-power driving, the trailer combines the advantages of two kinds of energy, namely fuel and power. By connecting the main vehicle with the carriages by the flexible hinge device, the trailer is applied to reliable connection and locking between two carriages, and can meet requirements on vehicle running smoothness index and steering stability.

A disk brake for bicycle is composed of braking driver, braking clamp left and right friction blocks installed in said clamp, and braking disk installed between said friction blocks. The one end of drive axle of said driver is linked to right friction block and its another end is extended out of the casing. A rockerarm is installed to the extended end. A release spring is installed between rockerarm and casing. Said friction blocks are driven by said drive axle to realize braking. Its advantages include compact structure, flexible braking and low cost.

The invention provides a 1000T pure-electric three-head tractor. The 1000T pure-electric three-head tractor comprises an upper layer guide rail unit, a lower layer guide rail unit, a roller frame, a first drawing head, a second drawing head and an automatic interruption saw; the middle part of the upper layer guide rail unit is provided with a first rack; the middle part of the lower layer guide rail unit is provided with a second rack; the first drawing head comprises a first drawing vehicle, a first driving gear and a first servo motor, wherein the first driving gear is arranged inside the first drawing vehicle and is engaged with the first rack; the first servo motor is reversely arranged at the bottom of the first drawing vehicle and is in transmission connection with the first drivinggear; the second drawing head comprises a second drawing vehicle, a second driving gear and a second servo motor, wherein the second driving gear is arranged inside the second drawing vehicle and isengaged with the second rack; and the second servo motor is reversely arranged at the top of the second drawing vehicle and is in transmission connection with the second driving gear. The 1000T pure-electric three-head tractor provided by the invention has the advantages of extremely high drawing speed, flexible start and braking, small inertia, relatively low running noise, stable performances, low fault rate and the like.

The invention discloses a brake adjusting arm which comprises an adjusting arm lever and a gear, wherein the adjusting arm lever is connected with an air chamber push rod, and the gear with a gear ring is connected with a camshaft. The adjusting arm lever is provided with a connecting hole, the gear is connected with the adjusting arm lever capable of rotating around the axis of the connecting hole, the gear is provided with an adjusting arm capable of driving the gear ring to rotate around the axis of the connecting hole, and an adjusting mechanism connected with the adjusting arm lever is arranged on the adjusting arm and can drive the adjusting arm to rotate and return. Relative rotation angles of the adjusting arm lever and the gear are finely adjusted by studs and adjusting bolts, so that the brake clearance of a brake is adjusted conveniently. A return spring can achieve a return function, also fixedly support relative positions of the gear and the adjusting arm lever, and adapt to flexible adjustment and brake.

The invention relates to an endoscope surgery robot system. The system is characterized by comprising: an endoscope operation mechanical arm (1), wherein the endoscope operation mechanical arm (1) isused for clamping an endoscope and can accurately and flexibly adjust the spatial position of the endoscope, so that a person does not need to hold the endoscope for a long time; an endoscope mountingcontrol platform (2), wherein the endoscope mounting control platform (2) is provided with an electric lifting upright post (3), a mechanical arm control handle (4), a computer host (5) and a display(6); and a mobile platform (8), wherein the mobile platform (8) is used for bearing the endoscope mounting control platform (2) and driving the platform to move to an operation position to realize braking. The system realizes the organic combination of the medical vehicle and the mechanical arm, and is beneficial to improving the flexibility and the rental range of the mechanical arm.

The invention relates to a matching single-shaft double-floating brake for a heavy-duty truck. The matching single-shaft double-floating brake comprises lower brake shoes (1), a return spring (2), rolling wheels (3), a cam shaft (4), a adjusting arm (5), upper brake shoes (6) and a brake bottom plate (8), wherein a brake shoe pin shaft (9) is mounted in and sleeved with a brake shoe pin shaft sleeve (T) at the lower end of the brake bottom plate (8); a brake shoe pin shaft liner bushing at the lower ends of the lower brake shoes (1) adopts pin shaft semicircular clamping grooves (Y); the pin shaft semicircular clamping grooves (Y) of the lower brake shoes (1) on the left side and the right side separately are combined to form a complete circular clamping ring for allowing the brake shoe pin shaft (9) to be clamped in; a tension spring (10) is mounted at the lower ends of the lower brake shoes (1) on the two sides; the lower brake shoes (1) on the two sides are tensioned towards the middle; a rolling wheel liner bushing at the upper ends of the lower brake shoes (1) adopts rolling wheel semicircular clamping grooves (C); the rolling wheels (3) are assembled in the rolling wheel semicircular clamping grooves (C) of the lower brake shoes (1) on the left side and the right side separately; and the rolling wheels (3) on the two sides are in press-fit contact with the cam shaft (4) at the middle. The matching single-shaft double-floating brake for the heavy-duty truck has the benefits as follows: the braking is flexible, the returning is quick, the brake performance is good, the braking stagnation phenomenon is prevented, and the traveling safety is effectively improved.

The invention discloses a portable stable brake type manpower tricycle which comprises a tricycle frame, a tricycle box, a tricycle seat, a front wheel, a rear wheel, a hub, a brake device and a pedal part, the tricycle box is arranged on the tricycle frame, the tricycle seat is arranged on the tricycle frame, the front wheel is rotationally arranged on the tricycle frame, the rear wheel is rotationally arranged on the tricycle frame, The hub is arranged at the joint of the frame and the front wheel and the joint of the frame and the rear wheel respectively, the brake device is arranged on the frame and the hub, and the pedal part is rotationally arranged on the frame. The invention belongs to the technical field of manpower tricycles, and particularly relates to the portable stable brake type manpower tricycle which adopts an integrally-formed simple tricycle frame to achieve the technical effects of being light, flexible and free of deformation under stress and adopts a double-brake rear wheel mode to solve the technical problems that a traditional single brake is unstable and insensitive. The technical effect of flexible braking is achieved.

The invention discloses a brake drum device for an automobile. The device comprises a brake drum body, and is characterized in that the inner side of the brake drum is provided with an drum inner bottom plate, the bottom surface of the drum inner bottom plate is provided with a chilled water pipeline, one side of the chilled water pipeline is provided with a front brake shoe sheet, and the other side of the chilled water pipeline is provided with a rear brake shoe sheet; a main limiting board is installed on one side of the top end of the front brake shoe sheet, a brake branch pump is installed below the main limiting board, return spring bolts are installed at the top end of the main limiting board, and return spring limiting holes are both formed in the front end face of the front brakeshoe sheet and the front end face of the rear brake shoe sheet; and the return spring limiting holes are connected with the return spring bolts through return springs, and ceramic fiber brake pieces are both installed on the outer side of the front brake shoe sheet and the outer side of the rear brake shoe sheet. According to the device, due to the fact that the chilled water pipe is installed inthe drum inner bottom plate, a harmful effect of overheating expansion of the whole device is avoided.