7results about How to "Improved brake response" patented technology

A brake handle with a dynamically variable rotation center in the braking process comprises a brake shell, a piston assembly, a push rod assembly, a brake handle, a multi-fulcrum linkage component and a rotation switching mechanism. The shell is provided with a piston cavity. The handle drives the piston to move through the push rod. The linkage component is provided with two rotating fulcrums, and the switching mechanism can switch two working states. When the front section of the handle is pinched, the handle rotates around the first fulcrum, idle stroke is eliminated, and operation is labor-saving. When the rear section is pinched, the second fulcrum is switched to rotate, and the lever ratio is increased to improve braking force. By means of automatic switching of double fulcrums, labor-saving control and large braking force output are both considered, and the problem that a traditional hydraulic brake handle is poor in performance is solved; the modular structure is easy to adapt to mass production, and switching nodes are accurate and controllable; a locking and failure protection structure is arranged, so that the operation is stable and safe; meanwhile, eccentric wear of parts is eliminated, the service life of sealing pieces is prolonged, and braking efficiency and use safety are improved.

This application relates to the field of unmanned aerial vehicle (UAV) control technology, and discloses a jet-driven high-speed braking method and device for UAVs. The method includes: a control unit acquiring flight attitude data of the UAV and relative correlation data between the UAV and obstacles; the control unit generating a braking command based on the relative correlation data and generating a nozzle angle adjustment command based on the flight attitude data; the control unit controlling a servo drive module to drive the nozzle to adjust the airflow injection direction and controlling the nozzle to inject airflow in the airflow injection direction, thereby generating an instantaneous reverse braking force until the control unit generates a safety command based on the relative correlation data to complete the braking of the UAV. This application can improve braking response speed and ensure the flight safety of UAVs.

The utility model provides automobile brake assembly structure relates to brake assembly technical field, include: brake disc, the cooling hole that is equidistantly seted up with ring array shape is seted up on brake disc outer wall, cooling hole is circular hole shape structure, the cooling groove of cylindrical slot structure is seted up with one cooling groove in every cooling hole place on brake disc outer wall, the diameter of cooling groove is greater than the diameter of cooling hole. The utility model is in the heat dissipation performance aspect, the ring array cooling hole of brake disc outer wall cooperates the cooling groove of greater diameter, significantly promotes gas access efficiency, enhances the airflow cooling effect, the semicylindrical first auxiliary groove on its upper and lower end surface not only expands the heat dissipation area, still strengthens heat dissipation through increasing surface roughness, the arc second auxiliary groove and semicylindrical third auxiliary groove on the brake pad of the utility model further expand the heat dissipation area, under the synergistic effect of multiple structures, effectively reduce the temperature of brake disc and brake pad in the braking process, avoid the brake performance attenuation caused by high temperature.

The invention relates to the technical field of brakes, in particular to an electronic mechanical braking device with a self-reinforcement structure. Comprising a shell, the shell is detachably installed on a brake caliper body and detachably connected with a cover body, a motor is installed in the shell, an output shaft of the motor is fixedly connected with a transmission shaft, the cover body is rotationally connected with a butt joint shaft, a composite transmission mechanism is arranged between the transmission shaft and the butt joint shaft, and the composite transmission mechanism is used for transmitting the transmission shaft and the butt joint shaft. The position, away from the cover body, of the butt joint shaft is fixedly connected with a sleeving shaft barrel, and the sleeving shaft barrel is in spline connection with a transmission piece. The transmission mode between the transmission shaft and the butt joint shaft is changed, the brake pad and the brake disc are rapidly attached through the low transmission ratio, then the rotating speed is reduced through the high transmission ratio, the torque is increased, the friction force between the brake pad and the brake disc is increased, and therefore in the braking process, the moving speed of the brake pad is increased, and the braking response speed is increased.

The application discloses a mine-used monorail crane electric drive-spring series brake system and method, and relates to the technical field of industrial control. The system comprises the following steps: collecting the real-time vehicle speed, track slope and vehicle load of the mine-used monorail crane as real-time running state parameters, inputting the parameters into a target brake force calculation unit built in a controller to obtain the target brake force required at present; generating a pulse width modulation driving signal to drive a servo motor to convert the rotary motion into linear motion via a ball screw transmission mechanism, push the piston rod to extend and compress the butterfly spring connected in series, make the butterfly spring generate elastic force and act on the brake shoe, thereby establishing the brake clamping force; during the braking process, the position and pressure collaborative closed-loop control strategy is executed based on the clamping force data, piston rod position data and motor rotation angle data collected by the controller in real time. The application effectively improves the brake response speed and safety of the mine-used monorail crane under variable load conditions.

The application relates to the technical field of fishing reels, in particular to an electromagnetic brake mechanism for a fishing reel, which is provided with a line cup, a line cup rotating shaft, a permanent magnet unit, a coil module and a control unit. The control unit comprises a circuit board and a gear adjuster. The circuit board is arranged at the end of the line cup rotating shaft and is connected with the gear adjuster through a wire. The gear adjuster adjusts the resistance value of an adjustable potentiometer in the circuit board through mechanical transmission, controls the loop impedance of the coil in stages and adjusts the intensity of induced current, so that the coil generates an induced magnetic field which restrains the rotation of the permanent magnet unit. Through the electrical connection between the circuit board of the control unit and the gear adjuster, the accurate control of the coil current in stages is realized. The user can adjust the gear according to actual needs (such as the size of fish and the speed of line release), and then change the magnetic field intensity generated by the coil, so that the flexible adjustment of the brake force is realized and the diversified fishing scenes are adapted.

The present application relates to a safety clamp cylinder with electromagnetic quick release valve for drilling rig hydraulic disc brake system. The cylinder includes cylinder barrel, piston, disc spring and rod cavity, and the innovation is that the rod cavity integrates parallel double relief circuits: the main relief circuit is directly connected to the remote hydraulic station through the first oil way; the emergency direct discharge circuit is controlled by the electromagnetic quick release valve, and is directly connected to the oil tank through the second oil way, valve body and third oil way. When emergency braking, the electromagnetic valve is opened to open the emergency circuit, and the oil is discharged through the double paths, and the piston pushes the brake block under the action of the disc spring. The present application shortens the relief path through the integrated design of the valve body and the cylinder barrel, has short response time, and builds a redundant safety mechanism, which can still discharge independently when the hydraulic station fails, completely solves the problems of braking lag and single point failure, and improves the safety of drilling equipment.