44results about How to "Sufficient braking force" patented technology

The invention discloses an integrated automatic parking braking device. The integrated automatic parking braking device comprises an electric control unit (ECU) provided with a vehicle state information input port (90), and is characterized by further comprising a parking braking unit (1) electrically connected with the ECU, a rear driving braking unit (2) and a front driving braking unit (3). The integrated automatic parking braking device has high large-angle slope parking capacity and low consumption of compressed air in a braking system.

The invention relates to a saloon car tyre surface and specially, relates to patterns of the saloon car tyre surface. The saloon car tyre surface comprises a centre pattern block, side pattern blocks and shoulder pattern blocks. The side pattern blocks and the shoulder pattern blocks are orderly and regularly arranged at left and right sides of the centre pattern block from inside to outside. The saloon car tyre surface is divided into left and right symmetrical parts by the centre pattern block. The centre pattern block is a vertical one-piece pattern block and is located in the center of the saloon car tyre surface. The centre pattern block is separated from the side pattern blocks through main vertical circle pattern channels located between the centre pattern block and the side pattern blocks. The side pattern blocks are separated from the shoulder pattern blocks through auxiliary vertical circle pattern channels located between the side pattern blocks and the shoulder pattern blocks. Adjacent two of the side pattern blocks are separated through an inclined side pattern channel and two ends of the inclined side pattern channel are respectively communicated with the main vertical circle pattern channel and the auxiliary vertical circle pattern channel. Adjacent two of the shoulder pattern blocks are separated through a shoulder pattern channel and the shoulder pattern channel is communicated with the auxiliary vertical circle pattern channel. The patterns of the saloon car tyre surface are mixed patterns and thus the saloon car tyre surface can produce an enough braking force and has good control performances and a beautiful appearance.

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 a tire structure for an automobile, in particular to a tread pattern structure of a load-carrying automobile tire. A tire tread for a load-carrying automobile comprises central pattern blocks which are arranged at the central position of the tread, wherein central longitudinal circumferential pattern grooves are formed in the middle of the central pattern blocks, and are used for dividing the tire tread into a left part and a right part which are symmetrical to each other; auxiliary pattern grooves are formed on the central pattern blocks at intervals; the left and right sides of each central pattern block are provided with a tire shoulder pattern block respectively; the central pattern blocks are spaced from the tire shoulder pattern blocks through the longitudinal circumferential pattern grooves; and the tire shoulder pattern blocks have an integrated structure. 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 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 discloses a control method for an air electric hybrid brake force of a brake of a locomotive. The method comprises the following steps: acquiring an air brake force generated by a brake controller and a hybrid brake force which contains an electric brake force and an air supplement brake force and is generated in a brake area of servo controller; comparing the magnitude of the air brake force with the hybrid brake force; if the air brake force is more than the hybrid brake force, abandoning the hybrid brake force and taking the air brake force as a target value for regulating the pressure of a brake cylinder; if the air brake force is less than the hybrid brake force, abandoning the air brake force and taking the air supplement brake force in the hybrid brake force as the target value for regulating the pressure of the brake cylinder. According to the control method for the air electric hybrid brake force of the brake disclosed by the invention, the air brake force and the air electric hybrid brake force are reasonably selected, so that the sufficient brake force of the locomotive is guaranteed and the condition of excessive total brake force is avoided. The invention also discloses a control system for the air electric hybrid brake force of the brake and the locomotive which have the above beneficial effects.

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 present invention concerns an elevator comprising an elevator shaft (1) defined by surrounding walls and top (3A) and bottom (3B) end terminals; an elevator car (4) vertically movable in the elevator shaft (1); elevator hoisting ropes (9) coupled to the elevator car (4); elevator hoisting machine (6) comprising a traction sheave (8), which is engaged with the elevator hoisting ropes (9); traction monitoring means configured to determine traction of the hoisting machine (6); an electromechanical braking apparatus (12A, 12B); a measuring apparatus (14A, 14B, 14C) adapted to provide speed data and position data of the elevator car (4); and a safety processing unit (17) associated with the traction monitoring means and the measuring apparatus (14A, 14B, 14C), the safety processing unit comprising an ETLS threshold, which is configured to decrease towards the top (3A) and / or bottom (3B) end terminal in accordance with the position of the elevator car. The ETSL threshold is adjusted onthe basis of the traction of the hoisting machine (6). The safety processing unit (17) is configured to determine an elevator car slowdown failure if the speed data meets or exceeds the ETSL threshold.

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.

The invention proposes a pressure medium-operated cabin brake for a lift system and also, for controlling said cabin brake, a valve arrangement with integrated control of the deceleration of the cabin during emergency braking operations. According to the invention, a spring-mass control valve or a proportional solenoid valve which is activated by an acceleration sensor is integrated into the valve arrangement for controlling the deceleration. The control arrangement is designed such that the deceleration of the cabin always lies within prespecified limit values. In addition, the brake springs and the pistons of the cabin brake and also the pressures in the valve arrangement are matched to one another such that a sufficient braking force for decelerating and holding the cabin is always available during emergency braking operations.

The invention relates to a tread pattern on tires. The tread pattern provided in the invention comprises a central pattern block, lateral pattern blocks and tire shoulder pattern blocks, wherein, the central pattern block is located at the central part of a tread, the lateral pattern blocks and the tire shoulder pattern blocks are regularly arrayed at the left and right sides of the central pattern block according to an inside-to-outside sequence, the central pattern block is an integrated vertical pattern block and is separated from the lateral pattern blocks through a vertical circular pattern groove, the lateral pattern blocks are separated from the tire shoulder pattern blocks through auxiliary vertical pattern grooves, adjacent lateral pattern blocks are separated from each other through a lateral pattern groove, adjacent tire shoulder pattern blocks are also separated from each other through a lateral pattern groove, lateral pattern grooves communicate with the circular pattern groove, and two ends of one auxiliary vertical pattern groove respectively communicate with two adjacent lateral pattern grooves. According to the invention, a mixed pattern is employed on the tread of tires, which enables the tires to have a sufficient braking force, good driveability and beautiful and elegant appearance.