7results about How to "Ensure braking stability" patented technology

The invention discloses a control method for an electronic hydraulic braking system, and relates to the technical field of vehicle braking, and the control method comprises the step of controlling opening and closing of a decoupling electromagnetic valve, a first linkage electromagnetic valve and a second linkage electromagnetic valve based on a braking mode instruction so as to execute a braking action corresponding to a wheel braking unit. By the adoption of the control method for the electronic hydraulic brake system, the brake master cylinder is arranged to be of a three-cavity structure, brake control over the wheel brake unit under multiple hydraulic lines is achieved through pressure adjustment of the three brake cavities of the brake master cylinder based on opening and closing control over the decoupling solenoid valve, the first linkage solenoid valve and the second linkage solenoid valve, and the brake control over the wheel brake unit under multiple hydraulic lines is achieved. The safety redundancy capacity of the braking system is greatly improved, and the braking stability under different working conditions is guaranteed.

The utility model relates to hoisting and conveying equipment technical field discloses a hoisting trolley direction changing moving device, including mobile base, and mobile base is equipped with two groups, two groups of mobile base are fixedly installed together through a group of slide rods, the slide rod is in the shape of H, and the middle part of slide rod is provided with mobile base, and the bottom end fixed mounting of mobile base has the crane, and one group of speed reducer mechanism is arranged on the both sides of mobile base respectively, the inside of two groups of mobile base is rotatably installed with two groups of moving wheels respectively, and the inside of moving wheel is provided with brake mechanism, this hoisting trolley direction changing moving device, through the regulation contact pressure dynamic control moving speed, through accurate brake and deceleration control, effectively reduce the shaking of hoisting goods, improve hoisting operation stability and security.

The present invention relates to a composite system optimization and coordinated control method, device and storage medium, wherein the method comprises: obtaining the amplitude and change rate of a braking command; obtaining the actual value of a motor regenerative braking torque and the observed value of a hydraulic braking torque and their respective change rates; combining the amplitude and change rate of the braking command to obtain a state coordinate; calculating the distance between the state coordinate and the boundary of an attraction domain of a motor regenerative braking system as a first distance m 1, and the distance between the state coordinates and the boundary of the attraction domain of the hydraulic brake system as the second distance m 2; If at least one of the first distance and the second distance is less than the first threshold distance d 1, the first braking mode is executed; if both the first distance and the second distance are greater than the second threshold distance d 2, the second braking mode is executed. Compared with the prior art, the present invention improves the kinetic energy recovery rate and comfort while ensuring the following of the braking command signal.

The invention belongs to the technical field of elevator anti-falling, and particularly relates to a freight elevator with a car anti-falling brake mechanism, which comprises a freight platform, a safety clamp, a traction rod, a sleeve, a speed limiting index and an auxiliary clamp, the freight platform is arranged at the bottom of a car and used for carrying passengers, and guide rails are arranged on two sides of the freight platform; the two safety tongs are arranged at the bottom of the cargo carrying platform, ascending connecting rod mechanisms for triggering linkage are arranged on the side faces of the safety tongs and used for enabling the safety tongs to grasp the guide rail, the traction rod is arranged between the two safety tongs, the two ends of the traction rod are connected to the ascending connecting rod mechanisms on the safety tongs respectively, and the sleeve is arranged on one side of each ascending connecting rod mechanism. The sleeve is used for limiting the movement range of the ascending connecting rod mechanism, and the sleeve is arranged outside the speed limiting index in a sleeving mode and is in sliding fit with the speed limiting index. Two-stage braking can be achieved, it is ensured that multiple sets of braking units respond quickly and synchronously during triggering, the safety margin is prolonged, reliable parking within a preset distance is achieved, and the safety of personnel and equipment is guaranteed.

The invention discloses a load feedback braking force distribution system and a distribution method based on an I curve, and mainly relates to the field of vehicle engineering technology; the system comprises: a first load sensor, a second load sensor, a third load sensor, and a fourth load sensor; a DC measuring amplifier; a first brake wheel cylinder, a first pressure sensor, a second brake wheel cylinder, a second pressure sensor, a third brake wheel cylinder, a third pressure sensor, a fourth brake wheel cylinder, and a fourth pressure sensor; an A / D converter, a D / A converter, an ECU, a brake pedal position sensor, and a hydraulic pump motor; a first controllable proportional solenoid valve, a second controllable proportional solenoid valve, a third controllable proportional solenoid valve, and a fourth controllable proportional solenoid valve; the invention determines the braking force ratio of front and rear brakes through feedback control calculation, so that the braking force distribution of front and rear brakes satisfies an ideal I curve, can ensure braking stability, and improve braking efficiency.

The present application relates to the technical field of automobile brake, and particularly relates to a brake caliper with synchronous wear of friction plates, comprising a caliper body, friction plates, a pushing mechanism and a bidirectional friction mechanism, wherein the bidirectional friction mechanism comprises a synchronization unit for controlling two friction plates to simultaneously abut against a brake disc; the present application can solve the following problems existing in the prior art: the hydraulic reaction force is relied on to push the caliper body to float to realize double-side braking of the brake disc, which causes the two friction plates to have action lag, and the two friction plates cannot simultaneously contact the brake disc, resulting in non-synchronous wear of the two friction plates; the friction plates cannot self-adaptively level, which causes the friction plates to fail to self-adaptively form surface contact when abutting against the brake disc, and local eccentric wear is prone to occur, which aggravates the wear speed of the friction plates and shortens the service life of the friction plates; the present application solves the core problems of non-synchronous wear and eccentric wear of the friction plates through the cooperative action of the lever synchronous driving of the bidirectional friction mechanism and the self-adaptive leveling of the pushing mechanism.

The invention provides a multi-redundancy intelligent braking system for a heavy vehicle and a control scheme of the multi-redundancy intelligent braking system. The multi-redundancy intelligent braking system comprises a regenerative braking layer; a continuous retarding brake layer; a friction brake layer; the integrated control unit is connected with the regenerative braking layer, the continuous retarding braking layer and the friction braking layer, and when a driver braking request signal and a vehicle state signal are received, the integrated control unit sends corresponding instructions to all the braking layers according to a preset cooperative control strategy so as to distribute needed braking force. The three braking layers and the integrated control unit connected with the three braking layers are arranged, the three braking layers are mutually backed up, even if one layer (even two layers) fails, the system can still provide effective braking, and the braking safety and the braking stability are effectively improved.