80results about How to "Guaranteed braking performance" patented technology

The invention discloses an automobile electromechanical brake, which comprises a front floating caliper and a floating caliper block. The front floating caliper is connected with a front friction disc, the floating caliper block is connected with a back friction disc through a nut-piston, a brake disc is arranged between the front friction disc and the back friction disc, and the nut-piston is connected with a motor through a boosting linkage and is connected with a gap regulating mechanism. The motor pushes the back friction disc and the front friction disc to attach onto the brake disc by the boosting linkage, thereby realizing braking. The automobile electromechanical brake has a gap regulating function, and gaps among the brake disc and the friction discs can be regulated freely, so that constancy of the brake response speed of automobiles is guaranteed and braking performance is guaranteed further. The automobile electromechanical brake is fine in braking performance, simple in structure, convenient in installation, easy to maintain and low in energy consumption.

The invention discloses an air pressure brake unit. A first solenoid valve is arranged between a plurality of right brake air chambers and a first air storage cylinder; a second solenoid valve is arranged between a plurality of left brake air chambers and a second air storage cylinder; an air outlet of a first chamber of a foot brake valve is communicated with control air ports of two foot relay valves; a first foot relay valve is arranged on an air path of the first solenoid valve and the first air storage cylinder; a second foot relay valve is arranged on an air path between the second solenoid valve and the second air storage cylinder; and brake efficiency of a vehicle can be guaranteed on the basis of reducing manufacturing cost of the vehicle. Preferably, an air outlet of the first foot relay valve is communicated with an air outlet of the second relay valve; and when any foot relay valve is failed, risky working conditions that the vehicle is out of control and unstable and the like can be effectively avoided or higher residual brake efficiency can be obtained. On the basis, the invention also provides a multi-shaft automobile chassis with the air pressure brake unit.

The invention discloses a vehicle electronic mechanical brake with a gap regulating function, which comprises a floating clamp body. The floating clamp body is provided with friction plates; an upper friction plate is fixedly arranged on the floating clamp body; a lower friction plate is connected with a force amplifier; a brake disc is arranged between the two friction plates; the force amplifier is connected with a motor; and the motor is used for pushing the friction plates by the force amplifier to ensure the friction plates adjacent to the brake disc so as to realize brake. According to the invention, under the action of a one-way clutch, a worm connected with a gear is driven by the gear to rotate and a worm gear is driven to rotate, so that a screw rotates relative to a nut fixed on the floating clamp body, and thus, the effect of regulating gaps is achieved and the gaps between the brake disc and the friction plates are freely regulated. Meanwhile, the self-locking property ofthe worm gear and the worm can also take a one-way moving effect. The vehicle electronic mechanical brake has both a force amplification effect and a gas regulating function, has simple structure, isconvenient to install and is easy to maintain.

The invention relates to a brake control method for a motor, in particular to the brake control method for a permanent magnet synchronous motor. The method is applied to a system consisting of an alternating current power supply, a frequency converter, the permanent magnet synchronous motor and a load. The control method comprises the following steps of: (1) determining voltage amplitude and a voltage angle during the braking of the permanent magnet synchronous motor; and (2) controlling the output voltage of the frequency converter based on the determined voltage amplitude and the determined voltage angle, and automatically tracking the maximum braking torque of the permanent magnet synchronous motor on the premise of ensuring that the bus voltage of the frequency converter is constant or tends to be constant to ensure the braking performance of the permanent magnet synchronous motor. The braking of the permanent magnet synchronous motor under normal power supply and power failure conditions is met by adopting the same algorithm at the same time, so the algorithm is simplified.

The invention relates to a self-adjusting type crank drum type brake which comprises a braking bottom plate. Two braking shoes in floating connection with the braking bottom plate are symmetrically arranged on the side face of the braking bottom plate. A crank cylinder body is arranged at the upper end of the braking bottom plate. A crank cam is installed in the crank cylinder body. Two side cylinder bodies extend from the exterior of the crank cylinder body. A piston is installed in each side cylinder body. An adjusting screw rod, a ratchet wheel and a plate are installed on the end portion of each side cylinder body. One end of each adjusting screw rod extends into the corresponding piston, and the other end of each adjusting screw rod directly faces the braking shoes. An adjusting and pulling plate is installed at the front end of the crank cylinder body, one end of the adjusting and pulling plate is clamped with the plates, and the other end of the adjusting and pulling plate makestooth contact with the ratchet wheels. The two braking shoes are mutually connected through a return plate spring. A pulling spring is further installed. According to the brake, an automatic gap adjusting device is arranged in the brake, the two braking shoes are adjusted independently, and the braking stability is improved. After braking, resetting is achieved through the return plate spring, due to the design of the return plate spring, enough space is reserved for assembling the brake, and the assembling efficiency is improved.

The invention discloses an automobile electromechanical brake, which comprises a front floating caliper and a floating caliper block. The front floating caliper is connected with a front friction disc, the floating caliper block is connected with a back friction disc through a nut-piston, a brake disc is arranged between the front friction disc and the back friction disc, and the nut-piston is connected with a motor through a boosting linkage and is connected with a gap regulating mechanism. The motor pushes the back friction disc and the front friction disc to attach onto the brake disc by the boosting linkage, thereby realizing braking. The automobile electromechanical brake has a gap regulating function, and gaps among the brake disc and the friction discs can be regulated freely, so that constancy of the brake response speed of automobiles is guaranteed and braking performance is guaranteed further. The automobile electromechanical brake is fine in braking performance, simple in structure, convenient in installation, easy to maintain and low in energy consumption.