96results about How to "Realize the braking function" patented technology

The invention discloses a twin-motor two-planet-row and single clutch driving device of a hybrid vehicle in the technical field of machinery. The device is provided with a front planet row and a back planet row; the front planet row is provided with a front planet row planet wheel and a front planet row sun gear; the back planet row is provided with a back planet row planet wheel and a back planet row sun gear; the front planet row and the back planet row share a gear ring. The output shaft of an engine is connected with the input end of an integrated starter generator; the output end of the integrated starter generator is connected with the driving disk of the clutch; the driven disk of the clutch is connected with the planet wheel of the front planet row through a planet carrier; the sun gear of the front planet row is connected with a drive motor; the planet carrier of the planet wheel of the back planet row is arranged fixedly on a car frame; the sun gear of the back planet row is also connected with the drive motor; the outside gear of the gear ring is normally engaged with a power take-off gear. The twin-motor two-planet-row and single clutch driving device of the hybrid vehicle has the advantages of compact structure, large transmission ratio, large load support capability, stable driving, and high transmission efficiency, thereby realizing power dividing and infinite variable speed at the same time.

The invention discloses a two-planet-row electromechanical coupling driving device of a hybrid vehicle in the technical field of machinery. The device is provided with a front planet row and a back planet row; each of the two planet rows is provided with a planet wheel, a sun gear and a row gear ring; the two planet row gear rings are connected with each other by a clutch. An engine is connected with the planet wheel of the front planet row; an ISG motor is connected with the sun gear of the front planet row; the gear ring of the front planet row is connected with the driving disk of the clutch; the driven disk of the clutch is connected with the gear ring of the back planet row; the planet carrier of the planet wheel of the back planet row is arranged fixedly on a car frame; the sun gear of the back planet row is connected with a drive motor; the outside gear of the gear ring of the back planet row is normally engaged with a power take-off gear. The two-planet-row electromechanical coupling driving device of the hybrid vehicle has the advantages of compact structure, large transmission ratio, large load support capability, stable driving, and high transmission efficiency, thereby realizing power dividing and infinite variable speed at the same time.

The invention provides a drive-by-wire hydraulic brake control system for automatic driving and a control method thereof. The system comprises a group of brake pedal operation modules, a group of hydraulic control modules, two groups of pressurization modules, two groups of motor driving control modules and a group of electronic control modules, the brake pedal operation module and the pressurization module are connected with the hydraulic control module through pipelines. The two groups of pressurization modules realize redundant backup, the brake pedal operating module, the pressurization modules, the motor driving control module and the hydraulic control module are respectively in signal connection with the electronic control module, and the electronic control module consists of two groups of electronic control sub-modules to realize redundant backup; the control method comprises a brake control method in a power-on failure-free state, a brake control method in a typical hardware failure state and a brake control method in a power-off failure state. The redundant architecture of the multiple pressurization modules, the multiple sensors and the multiple electronic control modulesis adopted, and the requirement of high-level automatic driving for a brake control system is met.

The present invention relates to a fall protection device used in the process of climbing steel tower of power transmission line. Said full protection device includes the following several portions: large hanger, small hanger, endless rope, delta wire-lock fastener, pear-shaped fastener, small tackle and safety hook. Said invention also provides a fall protection method by using said fall protection device and its concrete operation steps.

The invention arranges a control program in MCU in brushless motor controller for an electric bicycle, makes delay sampling of the current in DC bus line by a current sampling delay subprogram, obtains phase current signal outputted by a power circuit, makes closed-loop torque control according to torque instruction and feedback signal of output phase current, regulates the duty factor of PWM signal, and as the MCU receives braking instruction, and outputs braking logic signal that makes AND operation with the PWM signal at the front stage driving part to form braking gate control signal, which controls power amplifying circuit to produce braking torque in the driven motor. And the invention controls the power amplifying circuit to charge the battery, realizing energy feedback, thus improving braking reliability and effectively raising the continuously running mileage index of the whole bicycle for once charging.

A brake mechanism for the garden's tool with a working axle for installing cutting tool to it is composed of a working wheel module consisting of an internal wheel fixed to said working axle and an external wheel surrounding the internal wheel, the first and the second braking elements which are in contact with each other when they are in barking state, and an elastic element in said internal or external wheel.

The invention provides a wire-controlled hydraulic brake system adopting a high-pressure energy accumulator and a brake control method thereof. the high-pressure accumulator in the system is connectedto a pedal cavity through a normally closed one-way switch electromagnetic valve, a pressure cavity of a brake main cylinder is respectively connected with the pedal cavity and a high-pressure energyaccumulator through a normally opening two-way switch electromagnetic valve and a normally closed one-way linear electromagnetic valve; a normally open two-way linear electromagnetic valve of the brake pressure control unit is connected between the two inner cavities of the brake main cylinder and the brake wheel cylinder; a pressure sensor is arranged at the entrance of the brake wheel cylinder,the electromagnetic valve and the sensor are respectively in signal connection with the electronic control unit; the brake control method controls the on-off of the high-pressure energy accumulator and the pressure cavity of the brake main cylinder through the electronic control unit, controls the normally open two-way linear electromagnetic valve, and further controls the correspondingly connected brake wheel cylinders to perform brake pressurization, brake pressure maintenance or brake pressure reduction. According to the wire-controlled hydraulic brake system adopting a high-pressure energy accumulator and the brake control method thereof, rapid and accurate pressure control of the brake system is realized through the high-pressure energy accumulator, and good pedal feedback is provided for a driver.

The invention provides a brake measuring tape, which comprises a measuring tape shell, a spring box arranged inside the measuring tape shell, a spring and a tape band, wherein the tape band is wound in the spring box; the spring is used for withdrawing the pull-out tape band into the spring box when the spring box does not contact a brake button; a brake button neck is arranged at one side of the measuring tape shell; a brake button is arranged inside the brake button neck; the brake button is arranged at a first preset position of the brake button neck when the tape band is pulled out, so as to contact and fix the spring box, so that the pulled tape band is not withdrawn into the spring box. The brake measuring tape provided by the invention is long in service life, high in reliability, simple in structure, low in manufacture cost, and strong in applicability.

The invention discloses an air suspending following-up axle gasbag electrical control device and the controlling method, relating to the field of the improvement of the control device of the largetonnage multiaxial lorry air suspending following-up axle gasbag and the control method. The system mainly comprises a 5-speed gasbag control switch, a controller, a sensor, a solenoid valve, and a two-position three-way execution solenoid valve. Maintain the various pressure ratings of the gasbag to control the loading of the air suspending following-up axle. Two solenoid valves control the inflation and deflation to maintain the pressure. The pressure rating is sampled by fine pneumatic sensor. The braking function is realized by a two-position three-way execution solenoid valve at the high gear where the driving wheel is likely to slip. The air suspending following-up axle gasbag electrical control device has the technical advantages that the air suspending following-up axle gasbag pressure can be adjusted according to the loading of the whole lorry in time, and thus adjusts the loading distribution of the suspending following-up axle. Meanwhile, braking function is realized at the high gear where the driving wheel is likely to slip. The whole operation process is finished in the closed cab, thus improving the controllability and the reliability.

The invention discloses a pneumatic monorail crane and belongs to underground coal mine auxiliary transport equipment. The pneumatic monorail crane comprises a rail, a bearing trolley, a driving device, a brake device and walking wheels, wherein the driving device comprises a pneumatic motor and a reduction gearbox and further comprises a pneumatic controller and a pressure regulating valve; the brake device is connected with the reduction gearbox; the pneumatic controller is fixed at the outer part of the whole machine and connected with the pneumatic motor through a pipeline; the pressure regulating valve is fixed in a pipeline system and between the pneumatic motor and the pneumatic controller; gas is supplied to the pneumatic motor by the pneumatic controller through the pressure regulating valve, and meanwhile, the running speed of the monorail crane is regulated through regulating the gas supply quantity. The brake device of the pneumatic monorail crane is connected with the main machine, the structure is compact, the operation is convenient, the speed of the crane in braking and starting processes can be regulated, low-speed starting and braking are realized, and meanwhile, the work noise can be lowered.

The invention provides an unmanned vehicle brake system for achieving double-loop brake. The unmanned vehicle brake system is mainly composed of a manual brake loop, an electric brake loop, a three-way control valve and a brake pipeline Z. A brake pedal on the manual brake loop is connected with an assistance device through a control valve. The assistance device is connected with the control end of a main brake cylinder R through a main brake cylinder pushing rod R. An oil inlet of the main brake cylinder R is connected with a liquid storage tank R. An oil outlet of the main brake cylinder R is connected with a brake pipeline R. An electric control module on the electric brake loop is connected with the control end of a main brake cylinder D through a main brake cylinder pushing rod D. An oil inlet of the main brake cylinder D is connected with a liquid storage tank D. An oil outlet of the main brake cylinder D is connected with a brake pipeline D. The brake pipeline R and the brake pipeline D are connected with a three-way control valve. An oil outlet of the three-way control valve is connected with a brake controller through the brake pipeline Z. The brake controller is connected with a wheel side brake assembly of a vehicle.

The invention discloses an electromagnetic retarder capable of energy recovery. The electromagnetic retarder comprises a stator, a rotor, a power electronic module and a transmission shaft, wherein the power electronic module is connected with the rotor via a reversing valve. The retarder is characterized in that the stator is arranged in the stator, and a gap exists between the rotor and the stator; the stator comprises a stator support, a generating armature, a liquid cooling isolation module and a cylinder which bears eddy current, and the stator support is connected with the transmission shaft via a bearing; the liquid cooling isolation module is arranged between the generating armature and the cylinder; the generating armature comprises a generating armature winding and a generating armature iron core, is connected with the stator support; and the rotor comprises a rotor support, an excitation winding and an excitation iron core, and the rotor support is connected with the transmission shaft, and the excitation winding. The electromagnetic retarder capable of energy recovery is simple in structure, small in size and high in braking capability.

The invention discloses a novel floating caliper disc brake which comprises a brake disc and a brake caliper. The brake caliper on the right side of the brake disc is provided with a piston chamber and a shaft hole, and an electric push rod passes through the shaft hole. A smart encoder that precisely controls the stroke of the electric push rod is mounted on the electric push rod. According to the scheme, a mode of driving a piston by the electric push rod is adopted, and the problem of sealing and oil leakage of a traditional brake does not occur. At the same time, the smart encoder on the electric push rod can accurately control the displacement of a movable brake block and avoid the excessive friction between the movable brake block and the brake disc. After a long period of work, wearoccurs on the surface of the brake disc, and the smart encoder can also well control the displacement of the movable brake block to continue braking. In addition, both sides of the movable brake block and a fixed brake block are provided with damping pieces, the braking vibration and noise can be effectively reduced during braking, and thus the brake according to the scheme is simple in structureand high in reliability.

The invention relates to a functional reeling device for a power cord of a high-pressure cleaner. The functional reeling device comprises a reeling device assembly; and the power cord is wound on the reeling device assembly. The functional reeling device is characterized in that one side of the reeling device assembly is connected with a rocking handle assembly; the other side of the reeling device assembly is connected with a fixed base assembly; the reeling device assembly comprises a first conducting part; the fixed base assembly comprises a second conducting part; one end of the power cord is connected with the first conducting part which is connected with the second conducting part; and the second conducting part is connected with a first socket. According to the functional reeling device disclosed by the invention, a conducting sheet is elastically contacted with a large electrified ring and a small electrified ring and relatively and rotationally moves so as to achieve the winding, shrinking and stretching functions of the power cord and electric energy transmission function; and the power cord is freely stretched to be required length and a power cord plug is directly plugged in the power socket, and thus the functional reeling device is quick and convenient for use.

A self-coupling stepless speed changer relates to a stepless speed changer, aiming at solving the problems of limited transmission power, low transmission torque, complex structure, high cost and complex speed change control system of the existing stepless speed changers. In the invention, a differential planet gear set is arranged on a middle shaft, a pump wheel is fixedly connected with a differential inner gear ring, a turbo is fixedly connected with a differential planet carrier, the turbo is also fixedly connected with a long hollow shaft on the middle shaft, the pump wheel is fixedly connected with the differential inner gear ring of the differential planet gear set, the long hollow shaft is fixedly connected with a third one-way clutch which is fixedly connected with a speed changing planet gear set, a short hollow shaft is sheathed on the long hollow shaft, a first one-way clutch is fixedly connected with the short hollow shaft and a guide wheel, a second one-way clutch is fixedly arranged on the long hollow shaft in a brake, and a two-way clutch is fixedly connected with the long hollow shaft and the inner gear ring of the speed changing planet gear set. The self-coupling stepless speed changer does not need a speed change control system, has the characteristics of simple structure, low cost and unlimited transmission torque, and can be applied to the connection of driving devices and engines of automobiles and the like.

The invention relates to a medical auxiliary device, in particular to a multifunctional medical silent-point auxiliary device. The device is provided with a wall fixing slideway, and the space is saved; the device is provided with a silent-point seat, the silent-point seat is provided with a mobile device, and the aim can be achieved that a patient wants to move during a silent point; the device is provided with a direction control device, and flexible movement can be achieved; the device is provided with a braking device, and the braking function can be achieved; the device is provided with alifting device, and the height can be adjusted; the device is provided with a storage device, and sundries can be stored; the device is provided with a shading plate, and the problem can be solved that some medicine is irradiated under sun; the shading plate of the silent-point device is connected with a fixing lifting adjustment rod of the silent-point device, a drip bottom hanging rack is connected with the fixing lifting adjustment rod of the silent-point device, and the silent-point lifting device is connected with the fixing lifting adjustment rod of the silent-point device and connectedwith fixing armrests.

The hydraulic differential stepless speed variator belongs to the field of stepless speed verifying device technology. The hydraulic differential stepless speed variator consists of one differential torque converter comprising turbine, pump impeller, guide wheel and differential mechanism, speed varying planet mechanism, intermediate clutch and one-way clutch; one speed varying planet mechanism comprising advancing gear clutch, back gear clutch and differential mechanism; and one switching planet mechanism. The differential torque converter, the speed varying planet carrier, the switching planet mechanism and the output shaft are connected successively; and the speed varying sun gear are matched to the input shaft and the output shaft. The hydraulic differential stepless speed variator has novel structure, small size, low cost, direct mechanical driving high driving efficiency and other advantages.

The invention relates to a method for operating a compressed air-operated parking brake system (1) of a utility vehicle, comprising a parking brake device (3), by means of which compressed air is fedinto a spring brake cylinder (2) and said spring brake cylinder is vented, by way of which an associated brake is controllably released and applied. The invention further comprises an emergency release device (4) for feeding compressed air to the spring brake cylinder (2) during a malfunction of the parking brake device (3), wherein by means of the emergency release device (4), compressed air is fed to the spring brake cylinder (2) during the absence of such a malfunction. The invention further relates to a corresponding parking brake system (1) and to a vehicle.

The invention discloses an electric tool brake apparatus comprising a work piece and a brake apparatus used for fast stopping the movement of the work piece, wherein the brake apparatus comprises a brake drum, a brake ribbon winded at the periphery of the brake drum and a brake lever; and the brake lever acts on the brake ribbon to enable the brake ribbon to be switched between a first position where the work piece works in the normal work status and a second position where the work piece works after being braked. The electric tool brake apparatus further comprises a backflush brake and an inertia brake which are used for controlling the brake lever at different positions, wherein the backflush brake comprises a control lever which can enable the brake lever to rotate around a first rotation axis; the inertia brake controls the brake lever to rotate around a second rotation axis, and the first rotation axis and the second rotation axis are arranged coaxially. By adopting the structure,the invention has strong stability, lower cost and good brake effect.

The invention relates to a hybrid transmission and a vehicle. The hybrid transmission comprises a first input shaft connected with an internal combustion engine of the vehicle, a second input shaft connected with a motor of the vehicle, a gear shifting device, a planetary gear mechanism and an output shaft, wherein the internal combustion engine can transmit power to the planetary gear mechanism through the first input shaft and the gear shifting device, the motor can transmit power to the planetary gear mechanism through the second input shaft, and the planetary gear mechanism can transmit the power to the output shaft. According to the hybrid transmission and the vehicle, the gear shifting device is provided with a first end, a second end and a third end which are in anti-twisting connection with one another, wherein the first end is in anti-twisting connection with the first input shaft, the second end at least has a brake gear and a neutral gear, the third end is in anti-twisting connection with the planetary gear mechanism, and when the second end is in the brake gear, the second end is in anti-twisting connection with a shell of the hybrid transmission. The vehicle provided by the invention is provided with the hybrid transmission.

The invention applies the fuzzy control theory to an eddy current retardance and energy recovery device, and provides a fuzzy controlled eddy current retardance and braking energy recovery device. The device comprises five parts, namely, an energy recovery device, a brake pedal voltage sampling device, a capacitance battery electricity exchanging device, an eddy current retarder brake device and a fuzzy control system based on a single chip microcomputer. A capacitance battery conforms to the requirements for large recovered energy density of braking energy and large released density of the eddy current braking energy. The fuzzy rules of output signals at two ends of a potentiometer sensor are as follows: the voltage signals are divided into 4 fuzzy sets of ZO, PS, PM and PB, and the output signal of the single chip microcomputer is 4 fuzzy sets of ZO, PS, PM and PB. When the fuzzy controlled eddy current retardance and braking energy recovery device is used during braking, a generating set generates a braking torque to play an auxiliary retardance role, the defects that an existing eddy current retardance device cannot conduct energy recovery simultaneously and the existing energy recovery device cannot brake effectively can be overcome, and therefore, the fuzzy controlled eddy current retardance and braking energy recovery device can realize a braking function effectively while realizing the energy recovery.

The invention discloses a mistake-pedal-preventing pedal system for a vehicle. The mistake-pedal-preventing pedal system comprises a base, a brake pedal and an accelerator pedal, and further comprises a mistake-pedal-preventing pedal mechanism comprising an attraction iron core, a driven iron core, a coil, a controller, an angle displacement sensor and a return spring, wherein the attraction iron core is fixedly arranged in the brake pedal; the driven iron core is assembled in the accelerator pedal; the driven iron core synchronously rotates and axially slides in the radial direction relative to the accelerator pedal; engaged parts are arranged on opposite ends of the attraction iron core and the driven iron core; the return spring is connected between the other end of the driven iron core and the accelerator pedal; the coil is wound on the attraction iron core; the angle displacement sensor is mounted on the driven iron core; the coil and the angular displacement sensor are electrically connected with the controller respectively. The mistake-pedal-preventing pedal system disclosed by the invention is simple, accurate to judge, quick to respond, easy to mount, capable of greatly reducing a traffic accident due to the fact that the accelerator pedal is pedaled as a brake pedal by a driver under an emergency circumstance, and good in expected effect.

The invention discloses a friction material of a high-strength brake block. In order to exert the properties of the friction material such as high strength, wear resistance, heat resistance and contact component protection, crystalline flake graphite, potassium feldspar, steel wool fiber, organic silicon modified phenolic resin, oct-potassium titanate, antimony sulfide and vanadous oxide are added into the friction material. All the materials are uniformly distributed in the friction material, thus perfectly combining the properties of high strength, wear resistance, heat resistance and the like.

The invention discloses a hub type brake. The hub type brake comprises a casing, a rocker arm, a torsion spring, a left friction sheet, a right friction sheet, a rocker arm shaft and a sliding shaft, wherein the left friction sheet and the right friction sheet are movably arranged on the casing. The rocker arm penetrates into a through hole which is formed in the casing and matched with the rocker arm shaft, a spline ratchet wheel pocking device is arranged at the upper end of the rocker arm shaft, the lower end of the rocker arm shaft is connected with the rocker arm, the rocker arm is connected with the casing through the torsion spring, the left end of a spline nut butts against the rocker arm shaft, a sliding groove matched with the front end of the left friction sheet is formed in the rocker arm shaft, a convex block is arranged on the rocker arm, a limiting block is arranged on the edge of the casing, the limiting block is used for blocking the convex block arranged on the rocker arm, a sliding shaft hole matched with the sliding shaft is formed in a rear fixing base, a left sliding groove matched with the rear end of the left friction sheet is formed in the left end of the sliding shaft, a right sliding groove matched with the rear end of the right friction sheet is formed in the right end of the sliding shaft, and the bottom face of the left sliding groove and the bottom face of the right sliding groove are respectively an arc face.

The invention discloses a braking integrated pneumatic motor, belonging to the technical field of pneumatic motors. The pneumatic motor comprises a stator installed in a shell and a rotor eccentrically arranged in the stator, wherein blade grooves are arranged on the rotor; and blades are arranged in the blade grooves in a matching manner and can move in the radial direction. The pneumatic motor is characterized in that an output shaft of the rotor is supported on a front end cover of the shell via bearings 1; the front end of the output shaft extends out of the front end cover; shaft sleevesare arranged at the front end of the output shaft; a section of outer splines are arranged on the output shaft between the front end cover and the shaft sleeves; braking bases are arranged on the outer splines in a matching manner; friction plates are arranged at the rear ends of the braking bases; wedge-shaped grooves are arranged at the front end of the front end cover and are matched with the friction plates; and resetting devices are arranged between the shaft sleeves and the braking bases. The pneumatic motor is sensitive to respond and has good braking effect, high safety property, highlifting speed and compact structure.

The invention relates to an energy recovery method of an electric vehicle, in particular to a downhill energy recovery control method and system for a pure electric mining truck, and aims to solve thetechnical problem that an existing energy recovery method for the pure electric mining truck cannot meet the energy recovery requirement under the condition that the gradient is 15%-50%. The method comprises the steps of collecting whole vehicle information in real time; calculating the vehicle speed, the transmission target gear, the motor braking torque and the recyclable electric quantity under the current slope; judging whether the recyclable electric quantity is smaller than the rechargeable electric quantity of the battery; judging whether the motor braking torque meets the current gearbraking torque requirement of the transmission; determining to start an n-th-gear retarder; judging whether the residual electric quantity of the battery reaches the charging upper limit of the battery; judging whether the current gradient is smaller than a gradient set value; the invention further provides an energy recovery system for realizing the method. The energy recovery system comprises atransmission, a retarder, a whole vehicle mechanical brake, a motor, a motor controller, a battery and a whole vehicle controller.

The invention relates to a driving axle. The driving axle comprises a driving shaft assembly (100) and a pair of shell half assemblies (200). The driving shaft assembly (100) is provided with a driving shaft (101). The pair of shell half assemblies (200) are provided with a pair of shaft halves (201). The driving shaft assembly (100) is assembled to the pair of shell half assemblies (200), and the driving shaft (101) is in transmission connection with each shaft half (201). The driving axle further comprises a pair of brakes (300). The brakes (300) are arranged at the ends, adjacent to the driving shaft assembly (100), of the shell half assemblies (200) correspondingly, and each brake (300) can directly apply braking force to the corresponding shaft half (201). For a driving axle which is not suitable for drum type braking and caliper braking, the braking function can also be achieved reliably and conveniently.

The invention discloses a self-control obstacle-crossing trolley driven by gravity potential energy and belongs to the technical field of trolleys. The self-control obstacle-crossing trolley driven bythe gravity potential energy mainly solves the problem that single winding wheels of existing carbon-free trolleys cannot provide different speeds for the trolleys. The self-control obstacle-crossingtrolley is mainly characterized by comprising a trolley frame, a prime movement mechanism, a transmission mechanism, a driving mechanism, an electric control mechanism and a braking mechanism. The prime movement mechanism includes a weight, a rope, a fixed pulley, a fixed pulley shaft and supporting rods; the transmission mechanism includes a winding wheel, a winding wheel shaft, a large gear anda small gear, the winding wheel is integrally formed by three wheels different in radius, the weight is fixedly connected to one end of the rope, and the other end of the rope passes by the fixed pulley to be wrapped around the winding wheel; the driving mechanism includes a driving wheel shaft and driving wheels. According to the self-control obstacle-crossing trolley driven by the gravity potential energy, a driving force is changed by changing different positions of the rope on the winding wheel, so that various functions that the trolley moves smoothly on the flat ground, accelerates whengoing uphill and decelerates when going downhill are achieved.