45results about How to "Sufficient braking force" patented technology

The invention relates to a sedan tire structure, in particular to a tire tread pattern structure of a sedan tire. The tire tread of the sedan meridian tire comprises central pattern blocks, lateral pattern blocks and tire shoulder pattern blocks, wherein the central pattern blocks are the longitudinal pattern blocks; the lateral pattern blocks and the tire shoulder pattern blocks are regularly arranged on the left side and the right side of the central pattern blocks from inside to outside in sequence; the central pattern blocks are positioned on the central line position of the tire tread; the same arched pattern ditch is spaced between the central pattern blocks and the lateral pattern blocks, between the two adjacent lateral pattern blocks, and between the two adjacent tire shoulder pattern blocks respectively; an inclined lateral pattern ditch is spaced between the two adjacent central pattern blocks; and a longitudinal circumferential pattern ditch is spaced between the lateral pattern blocks and the tire shoulder pattern blocks. The tire tread of the tire adopts mixed patterns, and has the advantages of sufficient braking force, good control performance and elegant appearance.

The invention relates to an electro-hydraulic compound brake system for recovering the braking energy of an electric fork-lift. The system comprises a suction filter, wherein the oil inlet of the suction filter extends into oil in a hydraulic oil tank, and the oil outlet of the suction filter is communicated with the oil inlet of a gear pump; the oil outlet of the gear pump is respectively communicated with the oil inlet of an overflow valve and the oil inlet of a one-way valve; the oil outlet of the overflow valve is respectively communicated with an oil return opening T1 of a three-position three-way full-hydraulic power brake valve and the hydraulic oil tank; the oil outlet of the one-way valve is respectively communicated with an energy accumulator and the oil inlet P1 of the three-position three-way full-hydraulic power brake valve; the oil outlet of the three-position three-way full-hydraulic power brake valve is connected with a service braking device; and a pedal angle sensor is connected with the brake pedal rotating shaft of the three-position three-way full-hydraulic power brake valve through a coupler. The electro-hydraulic compound brake system realizes maximized regenerating braking energyrecovery by coordinated control of electro-braking and hydraulic braking, so that braking safety is guaranteed, and energy utilization is improved.

The invention relates to an automobile tire structure, in particular to a tread pattern structure of a load-carrying automobile tire. In a tread pattern for a radial ply tire of a sedan, V-shaped pattern grooves are formed at the central position of a tire tread along the circumferential direction at intervals; central pattern blocks and tire shoulder pattern blocks are arranged in the groove wall directions of the V-shaped pattern grooves from groove bottoms to groove tops sequentially; the central pattern blocks are spaced from the tire shoulder pattern blocks through lateral pattern grooves; the two ends of the lateral pattern grooves are communicated with two adjacent V-shaped pattern grooves; the central pattern blocks are arranged in a sequentially superposed and staggered way along the circumferential direction; the inclined directions of the two adjacent central pattern blocks are symmetrical to each other relative to the central position; every two adjacent tire shoulder pattern blocks are spaced from each other through a transverse pattern groove; and the transverse pattern grooves are communicated with the V-shaped pattern grooves and are smoothly transitioned. Mixed patterns are used for the tread of the tire, and have sufficient braking force, high maneuvering performance and aesthetic and elegant appearance.

The invention provides control system and method for an electromagnetic type magnetic track brake. The control system comprises the electromagnetic type magnetic track brake, a control unit, a power supply control module and a power supply; the control unit is connected with the power supply control module and connected to the power supply through a controllable switch, and the control unit is used for turning on the controllable switch after receiving a braking signal through a vehicle-mounted bus, comparing supply voltage output by the power supply with a set voltage value, and sending a control signal to the power supply control module when the supply voltage is less than the set voltage value; the power supply control module is connected with the electromagnetic type magnetic track brake and connected to the power supply through the controllable switch, and the power supply control module is used for receiving the control signal, then regulating the supply voltage to be not less than the set voltage value and inputting to the electromagnetic type magnetic track brake; the electromagnetic type magnetic track brake is used for closing a track under the control of the supply voltage so as to brake. With the adoption of the control system and method for the electromagnetic type magnetic track brake, the sufficient braking capacity of the electromagnetic type magnetic track brake is ensured, degaussing can be performed, and the flexible application of the magnetic track brake is achieved.

The invention relates to an electronic hydraulic pressurization system and a control method. The electronic hydraulic pressurization system comprises a pressurization power source module, a pressurization transmission module, a brake main cylinder module and an electronic control unit, wherein the output end of the pressurization power source module is connected with the brake main cylinder modulethrough the pressurization transmission module, and the pressurization power source module achieves switching or superposition of pressurization torque through the pressurization transmission module;the electronic control unit controls output of the pressurization power source module and switching and mixing of the pressurization transmission module, and the brake main cylinder module is used for feeding back pressure signals to the electronic control unit. Two motors of the pressurization power source module are subjected to torque coupling through a planetary gear mechanism and output through a gear ring. The pressurization transmission module adopts a ball screw mechanism, and the gear ring is in threaded engagement with the outer circumference of a ball screw nut; and three driving pressurization modes are achieved through cooperation of two locking mechanisms and the two pressurization motors in terms of rotating speed and torque. It can be guaranteed that the pressurization capacity is still achieved when the first pressurization motor breaks down and fails.

The invention relates to an electrical anti-skid shoe device, comprising a driver, a main shoe mounting device with a main shoe, one or more auxiliary shoe mounting devices with an auxiliary shoe, anda shoe demounting device. The main shoe mounting device is linked with the auxiliary shoe mounting devices. The electrical anti-skid shoe device is technically characterized in that the driver only drives the main shoe mounting device to act, the auxiliary shoe mounting devices act through prestress of torsion springs that may generate torque, and the auxiliary shoe mounting devices are linked. The electrical anti-skid shoe device is mainly applied to all vehicle storing tracks, except for the main tracks, such as station train formation tracks, arrival and departure tracks and special railways, can effectively prevent vehicle skidding and ensure railway operation safety, has simple and compact structure and adjustable braking force and can effectively prevent skidding of heavy-load wagons.

The invention provides a brake linkage system. The brake linkage system structurally comprises a swing arm, a force input assembly, a first force output assembly, a lever ratio modulation mechanism and a second force output assembly. The swing arm has a first end and a second end opposite to each other. The force input assembly is in pin connection between the first end and the second end of the swing arm. When the force input assembly provides an input force, the swing arm generates displacement along the direction of the input force. The first output assembly at the first end generates a first output force corresponding to the input force. The lever ratio modulation mechanism is slidably connected to the second end and generates a modulation force corresponding to the input force, so that the first end and the second end swing relatively. The second force output assembly is slidably connected to the lever ratio modulation mechanism and generates a second output force in response to the input force, the first output force and the modulation force, and the second output force and the first output force are in a non-linear relationship.

The invention relates to the field of electric vehicle vacuum system control, in particular to a plateau control method for a vacuum system of a new energy electric vehicle. According to the plateau control method for the vacuum system of the new energy electric vehicle, in the steps S1 and S2, the vacuum system is controlled according to whether the value of the pressure difference P between a vacuum tank and the outside is within the range of B < P < A; and when the altitude is relatively high, S1 and S2 cannot meet the control requirements, the steps S3 and S4 are carried out. The value of P is compared with the values of A and B, whether the vacuum degree of the vacuum system can meet the normal requirement is determined, the vacuum pump is continuously stopped three times according to the setting that the whole vehicle is in the plateau state, and the corresponding steps S3 and S4 are executed, so that the vacuum system can exert the pumping performance of the vacuum pump to the maximum extent in the plateau (the altitude is higher than 1000 m) area, the vacuum degree is improved, and finally the effect of improving the touch feeling of the brake pedal is achieved.