80results about How to "Guaranteed braking performance" patented technology

The invention relates to a detecting tooling for vacuum and high-pressure leakproofness of a brake caliper. The detecting tooling comprises a working table, wherein the working table is a mounting platform; two linear shafts I and two linear shafts II are perpendicularly arranged on the working table; the upper ends and the lower ends of the two linear shafts I are sleeved with shaft supports; the upper ends of the two linear shafts I are connected with a vacuum detecting device through bolts VI; a high-pressure detecting device is mounted on the working table, and is positioned under the vacuum detecting device. The detecting tooling can eliminate the leakage phenomenon of the brake caliper, and guarantees the braking performance of a disc brake; meanwhile, by adopting the differential pressure method to detect the vacuum leakproofness of the brake caliper, collecting and processing of signals can be easily realized, particularly automation of the whole detecting process can be realized, the detecting period is greatly shortened, the labor intensity is reduced, and the detecting efficiency of vacuum and high-pressure leakproofness of the brake caliper can be greatly improved meanwhile.

The invention provides an automobile brake system cooling device. air compressor of an air conditioner is used; a high-pressure plastic pipe is communicated with the cold output terminal of the air compressor and the other end thereof has four or six branch pipes; alternatively, the number of the pipe at the other end thereof is determined according to the number of brake hub of the automobile tyre; the pipe head is respectively provided with a sprinkler; the nozzle of the sprinkler is respectively aligned to the tyre brake hub and the brake sheet position or position in the automobile brake device easy to be heated due to the friction of the brake. A thermistor switch is used for monitoring and controlling the temperature when the hub runs, with the method as follows: the thermistor is arranged at the brake hub position; the working range of the thermistor switch is adjusted; the thermistor switch and the air compressor switch are connected with each other by wires; when the thermistor switch is turned on, the air compressor switch is also turned on; when the thermistor switch is turned off, the air compressor switch is also turned off.

In the present invention, the power of DC motor is cut off in order to create a rotary magnetic field in opposite directio to intertial rotary direction by the current being produced by DC motor intertia in the motor so that very strong magnetic damping will be created at interior of the motor to brake DC motor rapidly. It can decrease the wear of mechanical brake parts.

The invention relates to a brake control method for a motor, in particular to the brake control method for an induction motor. The method is applied to a system consisting of an alternating current power supply, a frequency converter, the induction motor and a load. The control method comprises the following steps of: (1) determining voltage amplitude and a voltage angle during the braking of theinduction motor; and (2) controlling the output voltage of the frequency converter based on the determined voltage amplitude and the determined voltage angle, and automatically tracking the maximum braking torque of the induction motor on the premise of ensuring that the bus voltage of the frequency converter is constant or tends to be constant to ensure the braking performance of the induction motor. The braking of the induction motor under normal power supply and power failure conditions is met by adopting the same algorithm at the same time, so the algorithm is simplified.

The invention discloses a hydraulic disc brake with the cooling effect. The hydraulic disc brake comprises a brake disc, a brake shell and a refrigerating plant, a cavity is formed in the brake shell,a condenser pipe is arranged above the brake shell, the right end of the condenser pipe is fixedly connected with the refrigerating plant, the left end of the condenser pipe penetrates an air inlet formed in the brake shell, the air inlet is located above the interior of the cavity, fixing supports are arranged at the left and right ends of the cavity, liquid spraying heads are arranged on the fixing supports and are hinged to the fixing supports through hinge shafts, an oil inlet is formed in the right side of the brake shell, the interior of the brake shell is filled with hydraulic oil through the oil inlet, brake pistons are arranged at the two ends of the lower portion of the brake shell and are arranged at the two ends of the lower portion of the brake shell in a sliding manner, andbrake discs are arranged at the bottom end of the brake shell. The hydraulic disc brake is simple in structure, high in usability, high in safety, capable of cooling the brake effectively and favorable for use.

The invention discloses a wear-resisting and high-temperature-resisting automobile brake pad, and belongs to the field of automobile parts. The wear-resisting and high-temperature-resisting automobile brake pad aims at solving the problem that an automobile brake pad in the prior art is insufficient in wear resistance and high temperature resistance. The wear-resisting and high-temperature-resisting automobile brake pad comprises a steel plate, a heat insulation layer and a friction block. The surface of the steel plate is coated with antirust matter, and a body material of the steel plate comprises zinc, copper, manganese and nickel. A friction material comprises a friction face and a back face. The back face is closely attached to the steel plate. The friction face is provided with channels. A mark face adjacent to the back face and the friction face is arranged on the friction material. The depth of the channels ranges from 0.1 mm to 2 mm. The sections of the channels are square, rectangular, triangular and trapezoidal. The channels are arranged in the friction face in a transverse manner or a vertical manner or a transverse-vertical manner or an oblique-transverse manner or an oblique-vertical manner or an oblique-oblique manner. A convex layer is arranged on the surface of the attachment face of the steel plate and the friction block.

The invention discloses a safety composite type brake drum with a rapid heat dissipation and anti-burst. The safety composite type brake drum with the rapid heat dissipation and anti-burst comprises a brake drum shell. The brake drum shell is provided with an inner cavity. The brake drum shell comprises a main body part, a connecting part and an installing part, wherein the main body part, the connecting part and the installing part are sequentially connected in an integrated mode. Multiple reinforcing ribs are arranged at intervals on the outer ring wall surface of the main body part in an outward protruding mode. Each reinforcing rib extends in the axial direction, and each reinforcing rib is provided with a wind-proof surface. Air inlets are formed in the joints of the wind-proof surfaces and the outer ring wall surface of the main body part, and the connecting part is provided with air outlets. Accordingly, on one hand, the reinforcing ribs have the structural strengthening effect on safety composite type brake drum, on the other hand, the heat dissipation area is increased, and the heat dissipation effect is improved. Meanwhile, the wind-proof effect can be achieved, air can be driven to form airflow, the airflow flows into the inner cavity, and the heat in the inner cavity is driven out from the air outlets by utilizing the airflow. Therefore the timely heat dissipation or discharge can be achieved, the brake performance of the brake drum can be guaranteed, the burst phenomenon of the brake drum can be prevented, the service life of a product is prolonged, and the potential danger is prevented.

The invention discloses a combined brake control method based on brake-by-wire and electronic parking brake. The combined brake control method based on brake-by-wire and electronic parking brake comprises the following steps of 1) judging whether a current vehicle is on a ramp or not; 2) if the vehicle is on the ramp and needs to be braked to park, firstly, starting a brake-by-wire system to brake; and after a vehicle speed is reduced to a vehicle speed threshold V=1-10 km/h, starting an electronic parking brake system during using the brake-by-wire system till the brake-by-wire system is closed after the vehicle parks stably. According to the combined brake control method based on brake-by-wire and electronic parking brake, by increasing ramp judging, an EPB function is invoked in advanceduring a certain gradient in the brake-by-wire process to guarantee the braking performance; and therefore, the steep slope automatic driving safety is greatly enhanced.

The invention discloses a simple folding stair transfer car comprising a car body. The car body is formed by connecting at least two bottom plates through a hinge. Roller wheels are arranged below the bottom plates; a containing device is arranged above the bottom plates; the containing device comprises a canvas bag which is fixedly connected on the peripheric edges of the bottom plates and is closed with the bottom plates; the top of the canvas bag is provided with an opening; a rope ring is arranged on the edge of the opening; a rope is threaded in the rope ring; both ends of the rope are respectively connected at both sides of a handle to form a close state; an anti-back running device is also arranged below the bottom plates; the anti-back running device comprises a clamping groove fixedly connected on the bottoms of the bottom plates; a landing rod is hinged in the clamping groove; and the bottom end of the landing rod is provided with an anti-skidding rubber pad. The invention can simply realize that articles are transported on the steps of a stair, has simple transport process and stable running, and can effectively prevent the transfer car from running back and gliding through the landing rod.

The invention relates to a brake block for a bus. The brake block is characterized by comprising a friction layer (i) and a base layer (ii), wherein the friction layer is abraded with a brake drum and is used for slowing down the vehicle; the base layer is mechanically connected with a brake shoe and is used for supporting the friction layer; the thickness of the friction layer is 1-1.4 times the thickness of the base layer. According to the invention, the structure of the brake block is designed as a double-layer structure, so that the material cost is lowered while the property of the brake is ensured. Through the mutual matching of all materials and components of the brake block, the service life of the vehicle brake is prolonged and the brake noise of the vehicle is reduced.

The invention provides a control strategy for a pure electric passenger car to effectively improve regenerative braking energy recovery rate and ensure high braking efficiency on the premise of less modification of a friction braking system. The control strategy includes the following steps that according to the basic theory of braking force distribution and ECE braking regulations, the change range of braking force distribution coefficient beta i is determined; under the general condition of braking strength, total braking force is shared by regenerative braking and friction braking according to the control strategy, to ensure the effective utilization of regenerative braking force, and to maintain the total braking force equal to the demand braking force of curve I, friction braking force increases gradually from 0, braking is conducted according to an original passenger car beta line, and the regenerative braking force is equal to the difference value between the curve I and the beta line; and the determination of the slope of the beta line is guided by increasing the energy recovery rate of the regenerative braking as much as possible and the requirement of the ECE braking regulations.

The invention discloses a motor brake device, and belongs to the technical field of motors; the motor brake device comprises a base sleeve and a linkage mechanism; an extension section of a rotating shaft of a motor extends into the base sleeve, the linkage mechanism comprises a friction disc and a movable disc, and the movable disc and the friction disc both have freedom degrees of axial displacement along the rotating shaft; the movable disc makes contact with and abuts against the friction disc through a conical elastic plate nested on the extension section of the rotating shaft, and when the conical elastic plate deforms, the movable disc further has displacement in the radial direction of the rotating shaft and abuts against the base sleeve. The brake effect is achieved through combination of the friction disc and the movable disc in the linkage mechanism; meanwhile, by means of radial displacement of the movable disc, the movable disc has a certain degree of freedom, and errors can be compensated when the movable disc and the friction disc are combined; therefore, combination of the movable disc and the base sleeve is tighter, movement in the combination process is reduced, and the braking effect is improved.

An intermittent conveying device provided with a brake mechanism and used for a mask production line comprises a machine body, a driving roller is installed on the lower portion in the machine body, and a brake assembly is arranged on the outer side of the driving roller. According to the device, through clearance fit between a sliding rail and a sliding rod and symmetrical arrangement of inclined plates and brake pads relative to the driving roller, when an external control module controls an air cylinder to contract, the inclined plates rotate inwards and drive the brake pads to abut against the two sides of the outer wall of the driving roller, the braking effect on the driving roller is achieved, rapid braking is achieved, then, intermittent processing of masks is facilitated, and the processing precision is improved; and the process occurs before the brake pads abut against the driving roller, a gear can be meshed again during reverse operation, then damage caused by sudden stop of a motor is avoided, the motor is protected, the service life of the motor is prolonged, sliding blocks can drive the brake pads to be rapidly replaced, the braking effect is guaranteed, and the machining efficiency is further improved.

A mechanical brake is provided. The front end of a braking arm is hinged on the surface of a base plate, the rear end of the braking arm passes through the stripe type hole located at the connection point between the base plate and a support plate; at the end of the rear end of the braking arm, a dragline-installing hole is provided; and between the body of the braking arm and the end of the support plate, a spring is hung; from the body at front of the braking arm, a branch arm extends; on the cantilever end of the branch arm, a friction plate assembly is mounted; on the base plate beside the branch arm, a rubber seat is provided; on the rubber seat, a cut-out spring leaf is mounted, one end of which is connected with a cut-off wire, another end is suspended; on the outer edge of the branch arm, a cut-off arm stretching out is fixed. Before the braking arm rotates about the hinging point at front end to brake, the cut-off arm first contacts with the bottom of the suspended part of the cut-off spring leaf. The invention employs a ''first cut-off then brake'' way, can minimize the braking time, guarantee the braking effect; and effectively reduce the wear of the friction plate assembly, and greatly lengthen the service life.

The invention discloses a hydraulic brake boosting auxiliary control method based on ESC, which has the main design concept that an electronic stability control system ESC is matched with a vacuum booster assembly to provide boosting assistance, and when the vacuum degree of a vehicle is insufficient, so that the brake boosting is limited, insufficient or completely invalid, the ESC actively provides extra auxiliary boosting assistance, and the vehicle is actively pressurized and decelerated. Specifically, when it is monitored that the vacuum degree of the vacuum booster is reduced or no vacuum exists, the braking intention of a driver is judged according to a preset boosting characteristic curve in combination with a brake pedal signal and a main cylinder pressure signal, and therefore the ESC assists the vehicle to conduct active pressurization according to the braking intention, and amplification of a braking request is achieved so as to complete braking assistance. According to the method, the influence of insufficient brake assistance on the driving feeling of a driver can be effectively reduced, the brake assistance requirement of safe parking of the vehicle is met, and the brake performance of the vehicle is guaranteed.

The invention discloses an anti-scrap abrasion numerical control machine tool spindle brake device. The device includes a pedestal; the surface of the pedestal is provided with a first slide groove; ascrew rod is arranged in the first slide groove; the screw rod is rotatably connected to a linear motor; the side surface of the linear motor is provided with an installation rack; the top end of theinstallation rack is provided with a second slide groove; the second slide groove is slidingly connected to a fixing device; the surface of the pedestal is connected to a power device; the side surface of the pedestal is provided with a control switch block; and the output end of the control switch block is electrically connected to the input end of the linear motor. Through brake structures at the internals of a first brake cabin and a second brake cabin, brake operation can be performed on a spindle, and brake effects can be guaranteed; and through the structural design of sealing rings andsealing gaskets, scraps can be effectively prevented from entering the brake cabins, so that the operation stability of internal equipment of the brake cabins can be guaranteed.

The invention discloses a belt type braking system of a dynamic compaction machine. The belt type braking system comprises a braking belt assembly, an adjusting mechanism and a driving mechanism. The brake belt assembly is provided with a first brake belt and a second brake belt which are used for surrounding the brake wheel together. The adjusting mechanism is connected with the first end of the first brake belt and the first end of the second brake belt, and the adjusting mechanism is used for adjusting the distance between the first end of the first brake belt and the first end of the second brake belt. The driving mechanism is connected with the second end of the first brake belt and the second end of the second brake belt, and the driving mechanism is used for driving the brake belt assembly to tightly hold and loosen the brake wheel. According to the belt type braking system of the dynamic compactor, the first braking belt and the second braking belt are adjusted through the adjusting mechanism, the gap between the braking belts and the braking wheel can be adjusted, the braking performance is guaranteed, and the service life is prolonged.

The invention relates to a meshed type high-temperature resistant brake pad. The meshed type high-temperature resistant brake pad comprises a base body bottom plate and a friction material block. A friction material main contact surface is arranged on one side of the base body bottom plate, a friction material auxiliary contact surface is arranged on the other side of the base body bottom plate, a boss is arranged, facing towards the direction of the friction material main contact surface, on the base body bottom plate, a plurality of punched holes are formed in the base body bottom plate, the friction material block and the friction material main contact surface are connected in a contact mode, the friction material block penetrates through a part of the punched holes in the boss and is filled into a concave part formed in one side of the friction material auxiliary contact surface, and then the friction material block and the base body bottom plate are meshed together. The friction material block and the base body bottom plate are meshed, pressed and clamped together, the brake effect of the brake pad under the high-temperature condition is guaranteed, driving brake safety of a car is improved, and the high-temperature resistant performance of the brake pad is achieved; the friction material block and a flanging of the base body bottom plate are pressed together, and therefore the service life of the brake pad is prolonged; a punching flanging process is adopted in the base body bottom plate, and therefore mechanical strength of the base body bottom plate is improved.

The invention provides an energy recovery control method and system and a vehicle, the vehicle comprises a motor, the method comprises the steps of in the energy recovery process of the motor, obtaining the current vehicle speed and the current wheel speed of the vehicle, and determining the wheel slip rate according to the current vehicle speed and the current wheel speed; and adjusting the actual energy recovery torque of the motor according to the wheel slip rate. In the process of controlling the motor to conduct energy recovery, the wheel slip rate is considered at the same time, the actual energy recovery torque of the motor can be dynamically adjusted according to the wheel slip rate, the situation that wheels are locked due to the fact that the energy recovery torque is too large can be avoided, and the vehicle braking performance is guaranteed.