75results about How to "Smooth braking" patented technology

The invention belongs to the technical field of application of brake materials for brake pads, and particularly discloses a friction material for a phase change heat storage composite brake pad, which comprises Cu powder, Cr powder, V powder, CuAlMn particles, graphene powder and graphite powder in a mass ratio of (40-60): (10-25): (0.1-1.5): (10-30): (0.5-1.5): (4-6). The friction material for the brake pad has the beneficial effects that the prepared friction material for the brake pad is low in friction coefficient, good in wear resistance and good in heat fading resistance, and the service life is prolonged; cu is used as a matrix, and Cr and V are used as reinforced matrix components, so that the material plays an important role in the overall strength and wear resistance of the material for the brake pad; the CuAlMn particles are adopted, so that unstable friction coefficient and brake failure caused by over-high temperature of the friction material for the brake pad under the high-temperature condition are effectively relieved; graphene and graphite are used as lubricating materials, so that the friction coefficient is effectively reduced and stabilized, and the thermal stability is improved.

The invention provides a crane hook target motion trail control system and a control method thereof.The crane hook target motion trail control system comprises a pressure control system, a winch system, a power source system and a sensing system.The pressure control system is used for monitoring the state of a clutch, controlling the winch speed of the winch clutch and feeding back pressure data in real time; one end of the winch system is connected with the pressure control system, and the other end of the winch system is connected with the power source system; the power source system is connected with the winch system and is used for providing power for the operation of the crane hook; the sensing system is connected with the controller through a signal transmission line and used for detecting pressure and rotating speed data in the operation process of the lifting hook and transmitting the pressure and rotating speed data to the controller for analysis. According to the invention, speed trajectory path planning and preventive real-time control can be carried out when the crawler crane does a free hook falling working condition, so that stable braking can be realized when the lifting hook lifts different weights of loads, and a winding drum can be effectively braked.

The invention relates to the technical field of artificial intelligence, in particular to a voice braking method, which allows a user to customize a braking triggering sound according to personal preference and driving habits, the voice can be a clear voice instruction or a specific voice feature, such as scream or shouting, so that the flexibility and applicability of the method are improved; sound features in emergency situations such as screaming and shouting are deeply analyzed, and a more accurate sound feature model is established; therefore, the method can quickly respond when a driver or a passenger makes an emergency sound characteristic, the emergency braking response time is shortened, the probability and severity of accidents are reduced, and the problem that in the prior art, an emergency braking mode mainly depends on a physical sensor and the operation behavior of the driver, and the safety is poor can be effectively solved. The technical problems that the potential information source, namely the sound characteristics of people in the vehicle, is not fully utilized for braking, so that the information source is limited, and the emergency braking response is lagged are solved.

The utility model discloses an electromechanical braking electric cylinder. An electromechanical braking electric cylinder comprises a lead screw, the lead screw is rotatably sleeved with a rotor shaft, the periphery of the rotor shaft is sleeved with a rotor, and the periphery of the rotor is sleeved with a stator; a primary sun gear is arranged at the axial front end part of the rotor shaft, the primary sun gear is in transmission connection with an output shaft through a hollow planetary reducer, an internal thread matched with the screw rod is arranged in the output shaft, and the output shaft is arranged on the screw rod in a sleeving manner and is in transmission connection with the screw rod; and a pressure sensor is arranged in the hollow planetary reducer or at the front end of the screw rod. The installation space and the torque transmission intermediate link are reduced, the torque transmission efficiency is improved, and the structure is compact.

The invention relates to the technical field of automobile braking, and discloses a braking control method, system and equipment for a distributed driving electric vehicle and a medium. The method comprises the steps that for the distributed driving electric vehicle, state data of the vehicle during braking are obtained, and whether the braking intention of a driver during braking is conventional braking or emergency braking is recognized according to the state data; the current longitudinal speed and the current side slip angle of the vehicle are obtained; the braking intention of a driver, the current longitudinal speed of the vehicle and the difference between the current side slip angle of the vehicle and the expected side slip angle of the vehicle in the absolute stable state serve as input data, the input data are input into the trained braking control model, and the braking torque used for stably braking the vehicle is obtained; and the vehicle is stably braked according to the braking intention of the driver and the obtained braking torque. According to the braking control method of the distributed driving electric vehicle, the control effect of the braking stability of the vehicle can be improved.

The utility model discloses an oil cylinder buffering device, and relates to the field of lorry-mounted crane air cylinders. An oil cylinder buffering device comprises a cylinder body, a slidable piston is arranged in the cylinder body, a piston rod is arranged at one end of the piston, and hollow structures are arranged in the piston and the piston rod. The supporting part is arranged at one end of the cylinder body and is used for blocking and limiting the end part of the cylinder body; the small hole or the thin seam of the throttling valve is arranged in the cylinder body, the flowing speed and pressure of oil can be effectively adjusted, so that stable braking and starting of a moving part are achieved, when the stroke of a piston is close to the end point, the closed part of oil is extruded out through the small hole or the thin seam of the throttling valve, resistance is generated, the moving part is gradually decelerated, and the braking speed of the moving part is increased. Meanwhile, when the hydraulic oil cylinder is started, hydraulic oil slowly enters a rodless cavity through a small hole or a gap of the throttling valve, the flow is gradually increased, and stable starting is achieved.

The invention relates to an electro-mechanical brake caliper, a brake system and a vehicle. The electro-mechanical brake caliper comprises a caliper body, a brake disc and a brake disc, the brake pad is arranged on the caliper body; the driving module is arranged on the caliper body; the driving module comprises a driving part, a transmission mechanism, a first speed reducing mechanism, a second speed reducing mechanism, a first piston assembly and a second piston assembly; the driving part is in transmission connection with the first speed reducing mechanism and the second speed reducing mechanism through the transmission mechanism, the first speed reducing mechanism is in transmission connection with the first piston assembly, the second speed reducing mechanism is in transmission connection with the second piston assembly, and the first piston assembly and the second piston assembly can move in the first direction so as to abut against and drive the brake pad to move. The electronic mechanical brake caliper has good brake performance.

The present invention discloses a robot walking ground rail, including a track mechanism, a movable mechanism, a driving mechanism and a brake mechanism; the track mechanism is arranged on the ground; the movable mechanism includes a movable plate and a plurality of rolling assemblies, and the rolling assemblies are arranged below the movable plate; the brake mechanism includes a brake driver, a brake connecting rod, a brake screw, a connecting member, a mounting seat and a claw, the mounting seat is provided with an internal screw hole that passes through from top to bottom, the screw is threadedly connected to the internal screw hole of the mounting seat, the driving end of the brake driver is connected to the first end of the brake connecting rod, the second end of the brake connecting rod is fixedly connected to the top end of the screw, the bottom end of the screw is connected to the claw, and the claw is directly opposite to the track mechanism. This scheme utilizes the self-locking characteristics of the screw when its thread lead angle is less than the friction angle, the brake mechanism has extremely high reliability and safety, and the brake reaction force acts on the thread of the screw during braking. Not only is the structure compact and stable, but the equipment manufacturing cost is low, which is conducive to improving product competitiveness.

A passive mining rail vehicle brake relates to the technical field of mining rail vehicle brakes, comprising a base, wherein the base is provided with two telescopic friction plate assemblies arranged back to back on the left and right; the telescopic friction plate assembly comprises a friction plate, a transmission plate and no less than two insertion rods, the front end and the rear end of the friction plate are respectively bent inwards, the insertion rod is vertically fixed on the inner side of the friction plate, the upper part of the base is provided with axial holes corresponding to the insertion rods one by one, and a swing cylinder is also fixed on the base, one end of the swing handle is hinged with a transmission rod A, and the other end is hinged with a transmission rod B, the front end of the transmission rod A is respectively hinged with one end of two connecting rods A, and the rear end of the transmission rod B is respectively hinged with one end of two connecting rods B. This passive mining rail vehicle brake can brake all passing rail vehicles and decelerate the vehicles, the braking is smooth, no strong impact is generated on the vehicles, and the practicability is strong.

The invention relates to the technical field of electric vehicle drum brakes, and discloses a drum brake type electromagnetic and friction hybrid braking device for an electric vehicle, a friction braking unit of the drum brake type electromagnetic and friction hybrid braking device is provided with a brake drum connected to a power source to rotate, brake pads sequentially arranged in the brake drum and two brake shoes symmetrically arranged, the brake cylinder is arranged between the two brake shoes, and the round drum is arranged on the outer side of the brake drum. The control unit is provided with a voltage regulating module which is connected with and controls the brake handle and the electromagnetic brake unit to control the working state of the controller. The number of the electromagnetic braking units is four, and the electromagnetic braking units are symmetrically arranged on the round drum. The hybrid braking device is simple in structure, high in practicability and high in braking reliability, the response speed and sensitivity of the brake drum and the brake pad can be improved while stable braking is kept, and meanwhile the heat dissipation performance and wear resistance of the whole braking device can be improved.

This application discloses an escalator anti-lock braking system and its operating method. The escalator anti-lock braking system includes a brake wheel, a braking mechanism, a closing spring, a brake coil, a variable resistance mechanism, an energy storage capacitor, a step speed sensor, and a controller. This application utilizes the brake coil to generate a repulsive magnetic force on the brake arm, thereby reducing the instantaneous braking force of the brake shoes on the brake wheel during braking, resulting in more uniform and smooth braking. The magnetic force of the brake coil can be adjusted by the controller, allowing for automatic adjustment based on actual conditions.

A double-rail tackle comprises a frame; the steering structure is movably arranged in the frame and is positioned at the central part; the brake structure is movably arranged in the frame and is positioned at the central part; the guide rail structure is movably arranged on the lower wall surface of the chassis and is positioned at the central part; the utility model relates to the technical field of recreational facilities, through the driving of the motor gear box assembly, the fluted disc is rotated, the frame is pushed to move, the whole frame is guided through the contact between the guide wheel and the guide rod, and meanwhile, the front wheel can synchronously rotate along with turning under the action of the linkage rod so as to adapt to turning, and when the vehicle is static, the front wheel is driven by the motor gear box assembly to rotate. The long brake block makes contact with the guide rod, the vehicle cannot move, the long brake block is far away from the guide rod by pushing the handle, the device normally slides at the moment, when braking is needed, the whole device is braked by pulling the handle, and when the speed sensor detects overspeed, the disc brake assembly is started, the brake disc is clamped, and the whole device is braked. The device can smoothly move on a track, the braking performance is good, intelligent braking can be achieved, and the safety of the tackle is greatly improved.

The application relates to a carbon / ceramic brake disc with wear resistance improved by silicon-chromium alloy synergistic modification and a preparation method thereof. The carbon / ceramic brake disc is prepared through key steps of preparing a carbon fiber preform, a carbon / carbon composite material, ceramic powder and a carbon / ceramic composite material, and the process is through gradient melting impregnation and segmented heat treatment process, thereby avoiding the composition segregation problem caused by the traditional silicon powder embedding melting impregnation method; the structured laying of the ceramic powder positively superimposes the capillary force in the brake disc and the furnace pressure; the ceramic production efficiency is increased by 30%, and the waste rate is reduced to below 1%. In the structure aspect, the porosity of the brake disc prepared by the application is reduced to 2%-3%; in the material composition aspect, the ceramic phase in the matrix is formed by Si-Cr-C three elements to form crystals, so that the wear resistance of the composite material is increased by three times; the brake disc prepared by the application has excellent wear resistance and friction performance, and is suitable for the aerospace field.

This invention provides a braking method and braking device for a brushless DC motor. The brushless DC motor includes multiple bridge arms, each bridge arm having an upper bridge arm switch and a lower bridge arm switch connected in series. The bridge arms are connected to a stator coil of the brushless DC motor through a node between the upper and lower bridge arm switches. The method includes: receiving a braking signal for braking the brushless DC motor; generating a first control signal in response to the braking signal to control all upper bridge arm switches to open or control all lower bridge arm switches to open; and generating a second control signal in response to the braking signal to control all lower bridge arm switches or all upper bridge arm switches not controlled by the first control signal to be turned on in a predetermined manner to generate a gradually increasing current in all bridge arms and all stator coils to brake the brushless DC motor.

The utility model discloses a big load outer rotor axle brake tractor, related to tractor technical field, including the casing body, the inside cooperation and installation of casing body have stator, the outside cooperation and installation of stator have rotor, then rotor is fixed on transmission shaft, transmission shaft is away from the one end cooperation and installation of stator have axle brake assembly and tractor wheel, wherein axle brake assembly still with outside fixed, then outside fixed in the outside of casing body, be equipped with controller in the top of casing body, when the magnetic core power off, brake spring will armature pop out quickly, armature top brake disc through the tooth cylinder along the gear shaft sliding, and make brake disc and friction disc close, realize transmission shaft brake under the action of friction, axle brake assembly direct action on the axle, relatively simple structure, the number of parts is less, the trouble point also reduces accordingly, and the reliability is higher, and the brake mode of axle brake assembly makes the braking process more stable, and the noise is smaller, is favorable to create the quiet living environment.

The invention relates to the technical field of ship crane braking, in particular to an electric ascender for hoisting, which comprises a support frame, a motor, a brake disc and a winch, a groove is formed in the outer side of the brake disc, mounting grooves are formed in the outer side of the brake disc and the inner side of the groove, and repulsion magnet pieces are arranged in the mounting grooves in the outer side of the brake disc. According to the electric ascender for lifting and hoisting, through the synergistic effect of the arranged hydraulic braking mechanism and magnetic braking, when the hydraulic driving arc-shaped plate drives the attraction magnet piece II to extrude the brake disc, the attraction magnet piece I is driven by the hydraulic driving arc-shaped plate, and the attraction magnet piece II is driven by the attraction magnet piece II to extrude the brake disc; the repelling magnet pieces and the attraction magnet pieces II on the outer side of the brake disc form repulsive force to assist braking, and the attraction magnet pieces I and the attraction magnet pieces II in the grooves form attraction force enhanced attachment, so that the problem of performance degradation of traditional braking in a severe environment is effectively solved, and stable braking under heavy load or complex working conditions is ensured.

The invention discloses a fixed hydraulic disc brake caliper which comprises a caliper body assembly and a friction plate assembly arranged in the caliper body assembly, the friction plate assembly comprises a pair of friction plate bodies which are oppositely arranged, the caliper body assembly comprises an inner caliper body and an outer caliper body which are matched with each other, the inner caliper body is provided with a mounting hole used for mounting and fixing the whole brake caliper, and the outer caliper body is provided with a mounting hole used for mounting and fixing the whole brake caliper. The inner caliper body and the outer caliper body are both provided with driving cylinders for driving the friction plate bodies on the corresponding sides to move, and the inner caliper body and the outer caliper body are both provided with return elastic structures for returning the friction plate bodies on the corresponding sides. The fixed hydraulic disc type brake caliper is reasonable in structural design, can realize strong torque and high braking force, improves driving safety, cancels a mounting bracket, is provided with a mounting hole and is fixed on the mounting plate, four cylinders on the two sides are hydraulically and simultaneously clamp the brake disc, stable braking is realized, and the fixed hydraulic disc type brake caliper can be suitable for heavy-load mechanical equipment.

The application relates to a kind of station driving type forklift auxiliary driving brake control methods, the station driving type forklift adopts drive wheel and load wheel common braking, the station driving type forklift auxiliary driving brake control method is: after detecting that forklift has brake operation, collection forklift actual running speed v1;When the ideal speed n2 of drive wheel of slip rate S=20% is calculated, the actual speed of drive wheel is adjusted to the ideal speed n2 of drive wheel by adjusting the brake torque of drive motor;When the ideal speed n3 of load wheel of slip rate S=20% is calculated, the actual speed of load wheel is adjusted to the ideal speed n3 of load wheel by adjusting the brake torque of load wheel brake.The application controls the slip rate of forklift at 20%, can effectively and controllable brake force is applied, avoid the problem that brake distance is relatively long caused by brake force application too small and the problem that wheel lock caused by brake force application too large.

The utility model discloses a hydraulic pressure test device for intelligent pressure vessel equipment, which comprises a rack and a human-computer interface touch screen, automatic brake mechanisms are fixed on two sides of the bottom of the rack, each automatic brake mechanism comprises a hydraulic telescopic cylinder, a thread installation clamping column and an anti-skid rubber supporting leg, a water storage tank is fixed in the rack, and a water pump is fixed in the water storage tank. And a fixed seat is welded on the rack. According to the utility model, the sound insulation protective cover, the sound pickup and the like are arranged, so that when the device is used, the sound pickup arranged on the sound insulation protective cover can be used for automatically monitoring sound generated in a water pressure test and then sending the sound to the human-computer interface touch screen, and the result of the water pressure test can be intuitively displayed after the result is calculated based on water sound analysis; and the sound insulation protective cover can effectively solve the interference of external environment noise on the sound pick-up, so that the test precision is improved.

The invention discloses an active safety elevator with a traction main machine monitoring system, which belongs to the technical field of elevators. The elevator comprises a shaft and a machine room at the top of the shaft, wherein a car and a counterweight are arranged in the shaft, and a traction main machine, a guide wheel, a first end rope head plate and a terminal rope head plate are arranged in the machine room. A braking mechanism is arranged in the traction main machine, and an elastic reset mechanism and an electromagnetic control structure are arranged in the braking mechanism, so that the action of the braking mechanism can be implemented by the elastic force of the elastic reset mechanism. At this time, the elastic reset mechanism is mainly used to apply elastic force to the brake block, so that the brake block contacts with the brake ring to generate friction, and no energy is consumed for braking. At the same time, a repulsive force can be generated by energizing the first electromagnet and the second electromagnet, so that the brake block is affected by the combined action of the elastic force and the electromagnetic force, and the friction between the brake block and the brake ring is greater, so as to achieve the effect of efficient braking. The elevator has two braking modes, so as to ensure the braking stability of the traction main machine.

The present invention belongs to the technical field of safety clamps, and specifically relates to a one-way safety clamp, comprising a clamp body, the clamp body having a guide rail channel, and also comprising a brake roller and a fixed wedge installed on the clamp body, the brake roller and the fixed wedge are respectively located on both sides of the guide rail channel, the fixed wedge abuts against the clamp body through a leaf spring, and the leaf spring is located on the side of the fixed wedge facing away from the brake roller; the two ends of the fixed wedge along the direction of the guide rail channel abut against the clamp body and a reset mechanism respectively, and after the safety clamp is reset, the reset mechanism is used to reset the displacement of the fixed wedge along the direction of the guide rail channel. The one-way safety clamp of the present invention adopts a structural design of a brake roller and a leaf spring, has a small structural space and stable braking; the reset mechanism can achieve reset with a small reset force after the one-way safety clamp is braked.

The invention relates to a drive axle assembly structure of a wet brake system of a 5-12T forklift, and relates to the technical field of wet brake drive axles. Comprising an axle housing, a brake and a hub, and the brake adopts a wet brake to brake the hub; a brake gear ring is fixed to the side, close to the wet brake, of the hub and conducts friction braking through a friction pair in the wet brake, and then the hub is braked. And a rotating shaft lip-shaped sealing ring and a box type oil seal are arranged between the brake gear ring and the wet brake for double sealing. The wet brake is adopted, the installation sealing mode of the wet brake is designed, and the defects of a shoe type or caliper disc brake in the prior art in the aspects of sealing performance, stability, heat dissipation effect and anti-pollution capacity are overcome; and the structure and the material process of the transmission gear pair of the main speed reducer are optimized, so that the size and the weight are reduced while the strength is ensured.

The multistage water turbine structure is suitable for the field of hydroelectric generation and comprises a flow guide pipeline and a water wheel assembly, the water wheel assembly comprises a mounting disc, water wheel blades, a transmission assembly and a generator, a rotating shaft is provided with a brake disc and is controlled by a brake motor, and the transmission assembly conducts transmission through an inner gear ring, driven teeth and transmission teeth. The installation disc is provided with an angle adjusting device; the inner wall of the flow guide pipeline is provided with a contraction flow guide section and a flow disturbing structure; the protective shell is detachable and is provided with a heat dissipation and ventilation device; the brake system is controllable; according to the invention, the power generation efficiency is effectively improved, the device adapts to various water flow working conditions, stable operation of equipment is guaranteed, and the service life is prolonged.

The utility model belongs to a hydraulic braking energy accumulator structure in the technical field of vehicle hydraulic braking systems. The shell (11) is provided with an air vent (8) and an oil liquid port (10), the tank body (5) is arranged in the shell (11), the piston assembly (4) and the spring (7) are arranged in the tank body (5), one end of the spring (7) is connected with one side of the piston assembly (4), the other side of the spring (7) is connected with the shell (11) provided with the oil liquid port (10), and the other side of the piston assembly (4) is communicated with the air vent (8). The hydraulic braking energy accumulator structure is simple in structure, can effectively solve the problems that a heavy vehicle braking system is poor in braking effect, too long in braking distance, short in service life and the like in the braking process, improves the braking performance and safety of a vehicle, effectively reduces the braking distance, prolongs the service life of the braking system, and improves the safety of the vehicle. Powerful support is provided for driving safety of heavy vehicles, and the safety performance of the vehicles is improved.

The invention provides a dual-motor anti-backlash heavy-load numerical control rotary table, and belongs to the field of numerical control machine tools, the dual-motor anti-backlash heavy-load numerical control rotary table comprises a main base body, a base protection top block is fixedly connected to the top surface of the main base body through a horizontal bolt, and a working platform is horizontally arranged on the top surface of the base protection top block. The rotary table can accurately rotate and position according to a preset angle, and a high-precision machining reference is provided for a workpiece, so that the size precision and the shape precision of a machined part are remarkably improved, and the requirement for high-precision machining is met. For example, in the machining process of aerospace parts, the rotary table can ensure that the machining precision reaches the micron level for machining of some holes, contours and other characteristics with extremely high precision requirements, the quality and performance of the parts are effectively improved, overall workpiece machining can be more accurate and efficient, and the machining efficiency is improved. And multiple directions can be expanded to meet the machining requirement, the bearing capacity is greatly improved, and the range of the types of machined workpieces is further widened.

A pirate ship braking device comprises a foundation support, a braking frame is vertically installed on the foundation support through a power driving device, a vertical support is installed on the braking frame, a transverse support is installed on the vertical support, a braking groove used for being matched with a pirate ship in a braking mode is formed in the transverse support, and braking leather is arranged in the braking groove. The bottom of the vertical support is installed on the brake frame through a plurality of vertically-arranged vertical buffers, the two sides of the transverse support are fixedly connected with the vertical support through a plurality of transversely-arranged transverse buffers, a transverse sliding block is further arranged at the bottom of the transverse support, and a transverse sliding rail matched with the transverse sliding block is arranged on the vertical support. Vertical sliding rails are arranged on the two sides of the brake frame, and vertical sliding blocks vertically installed on the vertical sliding rails in a sliding mode are arranged on the two sides of the vertical support. The bearing is safe and reliable, friction loss and extra stress can be effectively reduced through the improved design, and the durability and reliability of the bearing can be improved.

A non-metallic brake pad with low noise and good heat dissipation is composited by a friction material, a base material and a steel back. The front side of the friction material is provided with a plurality of arc-shaped heat dissipation grooves. The friction material comprises the following friction material components in parts by weight: porous titanium carbide and aluminum silicate fiber. The present invention adopts a plurality of arc-shaped heat dissipation grooves. The brake disc can generate a spiral airflow in the plurality of arc-shaped grooves to carry and throw out a hot airflow containing dust. In combination with the porous titanium carbide, aluminum silicate fiber, flake graphite and other components, the heat dissipation performance can be further improved. In addition, the friction coefficient of the present invention is appropriate, and the friction behavior is converted from the original fatigue wear to the indirect wear related to the transfer layer formed on the contact surface. The braking line is smooth and the service life of the brake disc can be extended.

The present invention belongs to the field of travel control of heavy-duty shuttle vehicles for mining, and provides an electro-hydraulic multi-system dynamic joint braking algorithm for heavy-duty shuttle vehicles for mining, which solves the problem that the braking force is difficult to accurately control when the vehicle brake pedal is purely hydraulically controlled. The vehicle controller samples the travel motor speed, vehicle load, accelerator pedal signal, brake pedal signal, controller bus voltage, etc. in real time, and combines the road conditions and other fixed parameters of the vehicle to perform data calculation, and finally obtains the real-time electric braking torque required by each wheel when the vehicle brakes (the real-time reverse torque required to be output by each travel motor), sends the command to the travel motor controller, and cooperates with the hydraulic braking of the brake pedal to achieve electro-hydraulic multi-system dynamic joint braking.

The utility model discloses an intelligent anti-explosion pulling rope device which comprises a shell and a rotating disc. A handle is arranged on the shell, and an accommodating space is formed in the shell; the turntable is rotatably arranged in the accommodating space; a control circuit board, a brake lock catch, a torsion spring and a nickel-titanium wire are arranged in the shell; the brake lock catch is arranged beside the turntable in a back-and-forth swinging manner, and the torsional spring enables the brake lock catch to be far away from the turntable; the rotating speed and rule of the rotating disc are collected through the sensor, information is transmitted to the control circuit board, when the rotating speed reaches a set anti-explosion impact value, the nickel-titanium wire is powered on to deform and contract, the brake lock catch is pulled to conduct braking, the control circuit board enables the nickel-titanium wire to be powered off immediately after being powered on for a short time, and the nickel-titanium wire is cooled to recover deformation; and the brake lock catch restores to the original position again under the action of the torsion spring, the brake is stopped, the turntable can normally rotate again, the product is stable in brake, the anti-explosion impact value can be set as required, and the operation is very convenient.

The present invention is a hydraulic control valve block, a hydraulic control system and a hydraulic device. The hydraulic control valve block includes a control circuit and a brake circuit. The control circuit is connected between a hydraulic source and a hydraulic cylinder. The brake circuit includes a first electromagnetic reversing valve, a synchronous motor and a first hydraulically controlled one-way valve. The first main oil inlet of the first electromagnetic reversing valve is connected to the first oil pipeline of the control circuit. The first main oil return port of the first electromagnetic reversing valve is connected to the hydraulic source. The first working oil port of the first electromagnetic reversing valve is connected to the first flow outlet of the synchronous motor. The second working oil port of the first electromagnetic reversing valve is respectively connected to the first pilot port of the first hydraulically controlled one-way valve and the first flow inlet of the synchronous motor. The second flow inlet of the synchronous motor is connected to the first oil inlet of the first hydraulically controlled one-way valve. The first oil outlet of the first hydraulically controlled one-way valve is connected to the hydraulic cylinder. The second flow outlet of the synchronous motor is connected to the hydraulic source. The present invention solves the technical problems that the brake device is easily damaged and the braking is not timely.