9results about How to "Steady braking force" patented technology

The invention discloses a brake control method and system of an electric vehicle, the vehicle and equipment. The braking control method of the electric automobile comprises the steps that an EBS controller obtains the currently needed total braking force according to a brake pedal opening signal; when the current required total braking force is larger than the current maximum braking force capable of being executed by the motor, the current maximum braking force capable of being executed by the motor is distributed to the motor for braking, and the difference value of the current required total braking force and the current maximum braking force capable of being executed by the motor is distributed to mechanical braking; and otherwise, only distributing the currently required total braking force to the motor for braking. According to the invention, motor braking is preferential, energy recovery is carried out to the maximum extent, and the energy consumption of the whole vehicle is reduced; motor braking and mechanical braking are processed by the EBS controller in a unified mode, stable braking force can be provided under various working conditions, the braking stability and safety are improved, and the braking effect of the vehicle is effectively guaranteed.

The utility model relates to hoisting equipment technical field provides the special explosion -proof hoisting machinery transport hoist and mount equipment of limited space, including hoist frame, set up the mobile seat of hoist frame crossbeam and set up the lifting trolley of mobile seat, lifting trolley includes base and brake wheel, be equipped with the slide block of slidable on base, the hydraulic brake cylinder is hinged to have on slide block, base still be equipped with the screw rod of by motor drive, screw rod is connected with slide block drive connection, to drive slide block and the hydraulic brake cylinder hinged to its on mobile, be used for compensating the wear clearance of brake shoe.

The utility model relates to a device for realizing pumping and adjusting goat horn brake hydraulic pressure, including motor, oil pump, center block, oil tank, pressure sensor, diaphragm type energy accumulator, check valve, two -way normally closed electromagnetic valve and two -way normally open electromagnetic valve, center block installs between motor and oil pump, oil pump is completely immersed in the hydraulic oil in oil tank, check valve links with the output end of oil pump, diaphragm type energy accumulator links with the output end of check valve, one end of two -way normally closed electromagnetic valve links with the output end of check valve, the other end of two -way normally closed electromagnetic valve is connected with brake caliper, one end of two -way normally open electromagnetic valve and oil tank lead, the other end of two -way normally open electromagnetic valve is connected with brake caliper. The device for realizing pumping and adjusting goat horn brake hydraulic pressure that has adopted the utility model, through the cooperation of energy accumulator, switch valve, can make brake caliper braking force long -term keep stable, safe and stable. The existence of energy accumulator guarantees that motor will not frequently start and stop, and the service life of motor oil pump is prolonged.

The utility model discloses a blade braking device of a mowing vehicle and the mowing vehicle, and relates to the technical field of mowing vehicles, the blade braking device of the mowing vehicle comprises a braking block, the braking block is provided with at least two friction surfaces, and the at least two friction surfaces are used for being in friction with the inner wall surface of a belt pulley to achieve braking of the belt pulley and a blade; the brake block is configured to move between a first position and a second position relative to a belt pulley of the mowing vehicle, so that when the brake block is located at the first position, at least two friction surfaces are in friction with the inner wall surface of the belt pulley to brake the belt pulley and the blade, and when the brake block is located at the second position, the brake block is separated from the belt pulley. According to the blade braking device of the mowing vehicle, the problem that the braking time is unstable due to friction between metal parts and a belt is solved.

The utility model relates to the technical field of automobile brake calipers, and discloses an automobile brake caliper capable of reducing friction noise, which comprises a brake disc and a brake caliper body composed of pistons and brake pads, the number of the pistons is even, the pistons are arranged in the brake caliper body in pairs, and the pistons are controlled by a hydraulic oil circuit and can drive the brake pads to move. An electromagnetic generator is arranged between the piston and the brake pad, the electromagnetic generator can generate a magnetic field after being powered on, the electromagnetic generator is connected with an electronic oscillator and can change the direction of the magnetic field, and a ferromagnetic layer made of materials capable of being attracted by magnets is arranged in the middle of the brake disc. The ferromagnetic layer is located within the influence range of the magnetic field of the electromagnetic generator, electrons in the ferromagnetic layer are influenced by the magnetic field in the changing direction and are continuously rearranged to generate heat, the brake disc is preheated, stress is uniform in the braking process, and gaps are reduced.

The invention belongs to the technical field of wind power generation equipment, and particularly relates to an electro-hydraulic brake device of a yaw system of a large wind turbine. The invention provides an electro-hydraulic brake device for a yaw system of a large-scale wind turbine, and aims to solve the problem that a brake device applied to a yaw system of a wind driven generator in the prior art is complex in structure and not easy to maintain. An electro-hydraulic brake device of a yaw system of a large wind turbine comprises an electromagnetic valve component and a brake disc body component, the brake disc body component comprises a brake disc body, an oil cavity is formed in the brake disc body, a piston is connected in the oil cavity in a sliding mode, a brake pad is installed on the piston through a rod piece, and the brake pad is located outside the oil cavity; the scheme that the hydraulic oil pressure is increased through electromagnetic valve driving, and then the hydraulic pressure drives the brake device to be started is adopted, namely, the electro-hydraulic joint control scheme. The problems of system complexity and response delay of a hydraulic system can be solved, enough driving force can be provided, and a normally-closed brake system can be rapidly started.

The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile kinetic energy conversion braking system and braking device.The new energy automobile kinetic energy conversion braking system comprises a motor, an electric heating system and a battery, and is characterized in that the motor and the electric heating system are electrically connected with the battery in parallel, and the motor converts electric energy into mechanical energy; the driving force is generated to push the automobile to move, the electric heating system can convert mechanical energy generated in the braking process into electric energy, and the battery can store the energy generated in the braking process. The braking device has the advantages of stable braking force and short braking distance. Through cooperative use of the braking mechanism, the temperature of a battery can be effectively reduced, braking performance can be more reliably provided, it is ensured that the braking effect of a vehicle is consistent and controllable, the safety of a driver and the driving stability are improved, continuous, stable and controllable braking force can be provided, the driver can better predict and adjust the braking force, and the driving safety is improved. And the braking process is more stable.

The invention relates to an electric control push rod mechanism for a commercial vehicle brake. The electric control push rod mechanism comprises a service braking module, a parking braking module and a ball screw pair. The service braking module and the parking braking module are arranged in the axial direction and connected with the ball screw pair, and braking thrust is provided for the service braking module and the parking braking module through the ball screw pair. As an executing mechanism of an electrically-controlled mechanical braking system, the braking system can be matched with a disc brake and a drum brake, compared with a traditional air braking system, the braking system has the advantages of being short in response time, stable in braking force, low in braking noise and the like, and meanwhile a basic control object is provided for an intelligent automobile.

This invention discloses a dual electromechanical braking device and its control method for automotive braking. The braking device includes a drive motor, an external gear ring, a reduction and torque amplification device, an electromagnetic power supply, an electromagnet A, a permanent magnet A, a first braking execution module, a second braking execution module, a first clamping mechanism, a second clamping mechanism, a first friction pad, a second friction pad, a brake disc, a bearing, a parking device, a displacement detection device, and a brake wear detection device. This invention uses two sets of braking devices to apply double braking to the brake disc, resulting in shorter braking time, better braking effect, and effectively improved safety performance. This invention also provides a control method for the braking process, including control methods for normal mode, emergency braking mode, and parking mode. During braking, if the braking device fails due to power failure, the detection device will promptly issue a safety alarm to the driver and immediately activate the other braking device for emergency braking, achieving backup braking.