45results about How to "Fast braking response" patented technology

The invention discloses an anti-collision system and control method of an electric automobile and the electric automobile. The system comprises an automobile speed detecting device, an automobile distance detecting device, a wheel motor braking device arranged on a host automobile and a whole automobile controller, wherein the wheel motor braking device comprises a wheel braking motor and is used for applying braking force to a wheel when receiving an emergency braking signal so as to conduct regenerative braking on the host automobile; and when the host automobile speed is larger than a predetermined automobile speed and a first relative distance is smaller than a predetermined distance, the whole automobile controller determines collision time according to the host automobile speed, the speed of a front automobile and the first relative distance and sends the emergency braking signal to the wheel motor braking device when the collision time is smaller than a predetermined time. According to the anti-collision system, the automobile can be effectively prevented from rear-end collision, the advantages of high braking response speed and short braking distance are achieved, and accordingly automobile safety can be guaranteed; and in addition, the anti-collision system has the advantages of simple structure and low cost.

The invention discloses an overload protection type intelligent twisting and grinding machine, which comprises a tension sensor component, a display measurement component, a switch, a setting control component, an equipment power supply component and an electric starting maneuvering twisting and grinding body. The overload protection type intelligent twisting and grinding machine disclosed by the invention has the advantages of small size, simple construction and convenience in installation and is suitable for the safe monitoring of a small maneuvering twisting and grinding machine for the line construction, and the stressing situation of traction equipment can be visually reflected. When a working load exceeds a set load, the overload protection type intelligent twisting and grinding machine can automatically stop operating, and the requirement of safe construction is achieved. The equipment can be electrically started, and an engine can charge a power supply during operation.

The invention discloses an auxiliary braking system and control method of an electric automobile and the electric automobile. The system comprises an automobile speed detecting device, a braking pedal opening degree detecting device, a wheel motor braking device and a whole automobile controller, wherein the wheel motor braking device comprises a wheel braking motor and is used for applying braking force to a wheel when receiving a regenerative braking signal so as to conduct regenerative braking on the automobile; and when the automobile speed is larger than a predetermined automobile speed, the whole automobile controller determines the acceleration of stepping a braking pedal according to the change of the opening degree of the braking pedal and the change time, determines braking torque according to the automobile speed, the wheel rotating speed and the predetermined tire slip rate when the acceleration is larger than a predetermined acceleration and generates the regenerative braking signal according to the braking torque. The auxiliary braking system has the advantages of high braking response speed and short braking distance, and accordingly automobile safety can be guaranteed; and in addition, the auxiliary braking system has the advantages of simple structure and low cost.

The invention discloses a coiling block stall braking system and a hoisting device. The coiling block stall braking system comprises a centrifugal triggering mechanism (100), a transmission mechanism (200) and a hydraulic buffering system (400). The centrifugal triggering mechanism (100) comprises a first fixed part (101) fixed to the axial end of a coiling block (1), and a first sliding part (102) connected to the first fixed part (101) in a sliding manner. The transmission mechanism (200) comprises a first transmission wheel (201) spaced from the axial end face of the coiling block (1). The first transmission wheel (201) and the coiling block (1) are coaxially arranged, and the first transmission wheel (201) is provided with a connecting part (300) used for being connected with or separated from the first sliding part (102). A hydraulic pump (401) is arranged in the hydraulic buffering system (400) and is in transmission connection with the first transmission wheel (201). The coiling block stall braking system is high in reliability, fast in response and high in stability.

The invention relates to the technical field of drum brake, in particular to a high-strength brake hub for a heavy truck. The brake hub comprises an electromagnetic rotation ring type brake device, during brake, an electromagnetic attraction device pushes a push disc to rotate, multiple brake pieces are pushed to a brake drum at the same time, under the effect of the brake pieces and the brake drum, brake action is achieved, the attaching area of the brake pieces and the brake drum is large, the brake effect is good, and the problem that during traditional drum type braking, the action area ofa brake shoe is small, and the brake effect is not ideal is solved; through control over the current magnitude, torque of a push disc is controlled, the attaching strength of the brake pieces and thebrake drum is controlled, brake strength controllability is finally achieved, control conveying is achieved only through two wires, original parts of a hydraulic pipe, a hydraulic pump and the like are omitted, the advantages of being low in cost, rapid in brake reaction, free of pollution and the like are achieved, and the problem that a traditional brake system adopts oil pressure, the hydraulic cost is high, and the hydraulic oil is leaked to cause pollution is solved.

The invention discloses an automobile brake boosting and controlling device, which comprises a liquid storage tank (1), a high pressure gas tank (2), an electronic control unit (3) and a boosting and controlling unit (4). The boosting and controlling unit (4) has a piston mechanism (41) and a four-way wheel control hydraulic pipeline; the piston mechanism (41) is respectively communicated with the liquid storage tank (1), the high pressure gas tank (2) and the four-way wheel control hydraulic pipe, and the electronic control unit (3) is respectively connected with the piston mechanism (41) and the four-way wheel control hydraulic pipeline through a circuit. According to the invention, due to application of the brake boosting and controlling device with high pressure and stored energy, the automobile has a swift response on braking, and the dependency on an engine is released; and the automobile brake boosting and controlling device is simple and convenient to arrangemount, and meanwhile, braking pedal force and routine are always in the best states.

The invention discloses an air-cut brake device for an agricultural vehicle. A diesel engine is connected with a belt pulley through a belt, the belt pulley is sequentially connected with an aerating pump, a pressure regulating valve and an air tank, the air tank is respectively connected with a brake valve and a hand operated valve, a brake pedal is connected with a brake valve through a brake push rod, the brake valve is respectively connected with two air chambers through a pedal-control quick releasing valve, the hand operated valve is respectively connected with the two air chambers through a hand operated quick releasing valve, and the air chambers are connected with brake drums mounted on rear wheels. Brake pads are fittingly mounted in the brake drums. The air chambers are fittingly connected with the brake pads through the push rods of the air chambers and brake eccentric cam rods. The air-cut brake device is specially modified and designed for original gear brakes of 91 chassis, can brake in an air-cut manner and is safe and reliable to brake and well applicable to rural areas with complicated road conditions.

The invention relates to a brake pressure control module of a steering axle and a control method thereof. The brake pressure control module of the steering axle comprises a brake valve body, a brake valve air inlet, a brake valve control port, a brake valve output port, a pressure regulating assembly, an air inlet and outlet assembly, a pressure regulating valve, a redundancy regulating valve and a brake valve control unit, wherein the air inlet and outlet assembly communicates with the brake valve air inlet and is used for controlling on-off of the pressure regulating valve, the pressure regulating valve is provided with a pressure regulating air inlet and outlet, the pressure regulating air inlet and outlet communicates with the brake valve air inlet, and the pressure regulating valve can communicate with the outside atmosphere; the pair of pressure adjusting assemblies is used for adjusting the pressure of the pair of brake chambers one by one; the redundancy adjusting valve is used for acting when the air inlet and outlet assembly fails. According to the brake pressure control module and method for the steering axle, safety and reliability of a vehicle can be improved, manufacturing cost is reduced, and the system integration degree is improved.

The invention relates to a belt breaking capturing device and belongs to the technical field of coal mining equipment. The belt breaking capturing device mainly comprises a support, a conveying rollerand belt breaking capturing units. Each capturing unit comprises a sliding wedge, a hydraulic telescopic rod and a hydraulic cylinder. During belt breaking capturing, the hydraulic cylinders drive the hydraulic telescopic rods to extend, the sliding wedges move downwards under the action of the hydraulic telescopic rods, and thus a conveying belt is clamped. In this way, the conveying belt can beeffectively captured, and hydraulic devices are rapid in braking response and high in clamping force, so that the problems that since a foundation of the capturing device is relatively large and heavy, the civil engineering work amount is large, and many false operations are generated are effectively solved. In addition, the hydraulic devices can be repeatedly used and is easy to operate during unlocking.

The invention relates to a brake device with a bidirectional braking function and an application method thereof. The brake device comprises a brake disc, a one-way clutch and a ratchet wheel locking mechanism. The brake disc is of a circular structure. A first limiting groove and a second limiting groove stretching along the radial direction of the brake disc are formed in the inner ring wall of the brake disc, the center lines of the first limiting groove and the second limiting groove are overlapped and penetrate the center of circle of the brake disc, an arc-shaped chute stretching inward is formed in the inner ring wall of the brake disc, one end of the arc-shaped chute stretches into the first limiting groove, and the other end of the arc-shaped chute stretches into the second limiting groove. The brake device can switch a slipping state and a non-slipping state automatically and has an instant braking function.

The invention relates to a magnetorheological fluid brake with multiple magnetic poles. The brake comprises an end cover (1), an input shaft (2), a sealing bearing (3) and a base (8), a rotating disc (9) is arranged on the input shaft (2), magnet exciting coils (5, 6 and 7), an inner cylinder (10) and magnetic conductive blocks (11 and 12) are arranged in the base (8), a sealing ring (4) is arranged at the inner side of the end cover (1), and a sealing cavity formed by the end cover (1), the sealing bearing (3), the input shaft (2), the sealing ring (4), the inner cylinder (10) and the rotating disc (9) is filled with magnetorheological fluid. According to the magnetorheological fluid brake with the multiple magnetic poles, the multiple coils are designed, so that a magnetic field can be uniformly distributed on the cylindrical surface of the rotating disc, the magnetorheological material can provide larger shearing braking torque, the braking response speed is high, regulation and control are easy, the structure is simple and compact, disassembly and maintenance are easy, the machining difficulty is low, and miniaturization and large scale are facilitated.