307 results about "Brake shoe" patented technology

The invention discloses a powder metallurgy brake shoe for a locomotive and a preparation method, and relates to the technical field of metallurgy brake shoes, the powder metallurgy brake shoe comprises the following raw materials by mass percentage: 50%-70% of a matrix component, 10%-18% of a reinforcing component, 10%-16% of a lubricating component and 10%-16% of a friction component; the matrix component comprises electrolytic copper powder; the reinforcing components comprise reduced iron powder, superfine iron powder, atomized nickel powder, molybdenum powder and zinc powder; the lubricating component comprises artificial graphite and sulfide. According to the invention, the performance reduction of the brake shoe and the decline of a matrix at high temperature are effectively inhibited, the stability of a friction coefficient is kept, the abrasion is reduced, and the service life is prolonged.

The invention relates to the technical field of damage identification, in particular to a structural defect identification method for brake shoe displacement and damage characteristics of a railway wagon, which comprises the following steps of: in the whole life cycle of the railway wagon, dividing a braking process into a plurality of stages, and performing hierarchical filing according to working condition types and service stages, constructing a brake shoe multi-working-condition structure response file; through longitudinal comparison along a time axis in the same working condition layer and transverse comparison among different working condition layers, screening out a brake shoe ectopic evolution mark and an initial brake shoe damage evolution mark which are sensitive to a structure state; encoding all evolution marks according to a spatial position, a working condition layer and a service stage to form a brake shoe ectopic and damage structure fingerprint sequence; and outputting an identification result including the structure defect type and the severity level, and generating a maintenance priority. According to the method, a space-time coupling mechanism of acoustic emission energy and temperature gradient is introduced to recognize early microcrack propagation, and the recognition sensitivity of recessive fatigue and complex damage modes is improved.

The invention relates to a brake shoe and brake head connecting structure, an assembling method and a railway vehicle, the brake shoe and brake head connecting structure comprises a brake shoe and a brake head, the brake head comprises a first side plate and a second side plate, a connecting plate is arranged between the inner edges, used for being matched with the brake shoe, of the first side plate and the second side plate, and a hole is formed in the middle of the connecting plate. Protrusions are arranged at the two ends of the connecting plate, a spring piece is fixed to the back face, used for being matched with a brake head, of the brake shoe, a first bent part is arranged at the end of the spring piece, the first bent part wraps the protrusion at the corresponding end so that the spring piece can be connected with the connecting plate in a clamped mode, and an outwards-protruding structure in the middle of the spring piece penetrates through an opening in the middle of the connecting plate. By the adoption of the connecting structure, the defects existing when a brake shoe bolt is adopted are overcome.

The invention relates to a brake element carrier body having a metallic main body, wherein a surface of the main body is at least partially, preferably completely, coated with an alloy, the alloy being diffused into the main body in a diffusion zone. This alloy is specified in advantageous embodiments.

The application provides a half-toothed worm electromechanical brake and method, relates to the brake technical field, and the brake comprises a linear and rotary motion conversion assembly, a piston, a brake caliper, a brake shoe, a half-toothed worm, an output worm gear, a parking drive unit and a service brake unit, the parking drive unit and the half-toothed worm are matched, the service brake unit and the output worm gear are matched, and the half-toothed worm and the output worm gear are matched, so that the integrated configuration design with the service brake and the parking brake quick switching capability is realized, the structure has high integration degree, is stable and reliable in long-term use, has high meshing transmission precision, and the technical problems of the existing electromechanical brake, such as complex structure, poor long-term use stability and poor precision, are solved.

1. The name of the design product: shoe welding fixture (railway welding). 2. The use of the design product: for shoe welding clamping and fixing. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a drum-type brake shoe assembly structure with a reinforcing rib assembly, and relates to the technical field of drum-type brake shoes. Comprising an installation base, the installation base is provided with an installation mechanism used for the drum type brake shoe, the installation mechanism comprises the structure that in the braking process, friction between a brake shoe and a brake drum can generate large resistance, the resistance can be transmitted to a brake shoe base and a shoe block, at the moment, a first reinforcing rib is located at the inner side connecting position of the brake shoe base and the shoe block, and therefore the brake shoe base and the brake drum block are connected. The brake shoe base and the brake shoe can effectively disperse and transfer resistance, stress concentration and deformation at the connecting position of the brake shoe base and the brake shoe are prevented, meanwhile, the reinforcing blocks of the triangular structure and the second reinforcing ribs on the edges of the reinforcing blocks further enhance the overall rigidity of the brake shoe base and the brake shoe, and when stressed, the reinforcing blocks and the second reinforcing ribs act jointly, so that the brake shoe base and the brake shoe are more stable. Force is evenly distributed on the whole brake shoe structure, damage caused by too large local stress is avoided, and the structural strength and stability of the brake shoe assembly are enhanced.

The invention provides an elevator brake failure early warning device, and relates to the technical field of elevators. According to the failure early warning device for the elevator brake, the temperature sensing assembly, the vibration sensing assembly, the torque sensing assembly, the air gap sensing assembly and the pressure sensing assembly are arranged through the sensor module, so that a plurality of key parameters such as the temperature of a brake shoe, a vibration signal, a brake torque, a brake air gap and hydraulic pressure or spring pressure can be collected in real time; the comprehensive monitoring of the working state of the elevator brake is realized; the data processing and analysis module applies a multi-dimensional data analysis technology, combines various failure judgment algorithms such as a simple algorithm based on threshold judgment, an intelligent algorithm based on pattern recognition and a prediction algorithm based on machine learning, and a data analysis model comprising a feature layer, a prediction layer and a decision layer; and the collected data can be deeply analyzed and processed, whether the brake has a failure risk or not is comprehensively judged, and the accuracy and reliability of early warning are greatly improved.

The utility model provides a fault self-checking elevator band-type brake safety device. The fault self-checking elevator band-type brake safety device comprises a base, wherein a detection assembly is arranged at the top of the base; the detection assembly comprises a fixing block arranged on the top of the base, and two brake arms are rotatably arranged on the front face of the fixing block. According to the fault self-inspection elevator band-type brake safety device, when a brake shoe is abraded much to enable the return stroke line spacing of a compression spring to be increased, the right end of a second connecting rod can move more rightwards compared with normal conditions, then a sliding block slides to the position below a power connection groove, and under the action of an ejection spring, the sliding block can move more rightwards to the position below the power connection groove. According to the brake shoe self-checking device, the structure is simple and practical, self-checking of the brake shoe is achieved within the interval time of maintenance of a maintenance worker, and the problem that potential safety hazards exist in a brake device is solved.

The invention relates to a rail vehicle brake, in particular for freight wagons, comprising a monitoring device and to a method for monitoring a rail vehicle brake. A rail vehicle brake (1), in particular for freight wagons, has a brake lever (1a) comprising a brake shoe (5), a brake cylinder (3), a lever adjuster (4) and a monitoring device (10). The monitoring device (10) has a detection unit (7, 7a, 7b, 7c, 7d, 8, 9) comprising corresponding sensors (71, 72, 73, 74, 75, 77, 81, 82, 90) which are formed by access to an electrical energy supply network of a rail vehicle to be equipped with the supply of electrical energy. A rail vehicle and a method for monitoring a rail vehicle brake (1) are provided.

The utility model discloses a brake shoe brake pad structure of a low-noise disc type brake shoe assembly, which relates to the technical field of brake pads, and comprises a brake shoe body, a brake pad main body is arranged on one side of the brake shoe body, and a mounting mechanism is arranged between the brake shoe body and the brake pad main body. The shock absorption assembly comprises a rubber shock absorption pad installed on one side of the brake pad body through the vulcanization technology, through elastic deformation of the rubber shock absorption pad, when the brake pad body rubs against a brake disc to generate vibration, vibration energy can be effectively absorbed, meanwhile, a ceramic fiber pad has high flexibility and excellent damping characteristics, and the service life of the brake pad is prolonged. In addition, the heat dissipation copper net is of a honeycomb structure, part of noise generated by friction can be absorbed while heat dissipation is conducted, vibration and noise in the braking process are greatly reduced through mutual cooperation of the heat dissipation copper net, the rubber shock pad and the heat dissipation copper net, and the comfort and the mute performance of a braking system are remarkably improved.

The invention provides a positioning tool for a brake shoe hanging seat and a fixed hanging rod seat of a rail car framework. The positioning tool comprises a tool platform; the two supporting assemblies are arranged on the two sides of the top of the tool platform correspondingly. According to the positioning tool for the brake shoe hanging seat and the fixed hanging rod seat of the rail car framework, the tool platform, the two supporting assemblies, the four positioning seats, the pin shafts and other structures are matched with one another, when a rail car framework component is positioned, the tool platform provides a unified reference, the supporting assemblies stably support the positioning seats, and the reference does not need to be manually and repeatedly calibrated; a component is placed on the positioning seat, and the pin shaft is inserted into the shaft hole to quickly position without manual lineation measurement; the four positioning seats are synchronously positioned, so that the coaxiality and the mounting precision of parts are guaranteed, and the problem that the size is out of tolerance is avoided, thereby solving the problems of inconsistent traditional positioning reference, low precision and complicated operation, simplifying the assembly process, reducing the reworking risk and improving the stability and the safety of the assembly of the rail car brake system.

The invention discloses a method for predicting the temperature of an unsteady-state tread brake wheel shoe on a long and large ramp of a railway wagon. The method comprises the following steps: constructing a transient heat transfer finite element model of the wheel shoe; writing a train speed and thermal boundary condition calculation subprogram based on an electric-pneumatic hybrid braking model of the freight train, and integrating the subprogram into a finite element model to realize coupling of train speed calculation and wheel tile transient heat transfer calculation; temperature monitoring points are arranged on wheels and brake shoes respectively, temperature signals are transmitted to the subprograms, and a wheel shoe temperature monitoring module is constructed; the judgment results of the train speed and the wheel tile temperature are associated with tread braking and electric braking parameters through subprograms, and a train braking control module based on feedback control is constructed; inputting train marshalling, brake control, line information and environment information parameters, and calculating temperatures of wheels and brake shoes; according to the method, the problems of wheel tile temperature checking and braking strategy design of freight train long and large ramp tread braking are solved.

A vehicle electronic system including a parking brake equipment, comprising a brake element (2) including either a brake pad or a brake shoe, said brake element (2) including an electrical circuit equipped with one or more sensors (3, 4, 5) for real-time detection of signals relating to temperatures and / or to normal forces and / or to shear forces and having electrical terminals arranged in a zone for collecting the signals from the brake element, said vehicle electronic parking brake system further comprising an actuator (8) of the brake element (2), a controller (7) delivering a braking force command to the actuator (8), and regulating means (9, 10) driving the controller (7), wherein the regulating means (9, 10) include a closed regulating loop of the braking force including a reference braking force generator (10), said closed regulating loop of the braking force being communicating with said sensors (3, 4, 5) to acquire at least one of temperatures and / or normal forces and / or shear forces measurements.

The problem that this invention aims to solve is to provide an emergency braking device that can maintain braking force over a long period of time. [Solution] The emergency stop device of the embodiment comprises a pair of outer wedges and a pair of inner wedges. The outer wedges are arranged on either side of the central axis, and the surface facing the central axis is an inclined surface that approaches the central axis upward. The inner wedges are arranged on either side of the central axis and have inclined surfaces that approach the central axis upward, with at least a portion of them located between the outer wedges and the central axis. At least a portion of the inclined surfaces of the outer wedges and at least a portion of the inclined surfaces of the inner wedges face each other. The inner wedges are provided with a brake shoe plate on the side facing the central axis, and the brake shoe plate is provided with a brake shoe and a dust removal member on the surface facing the central axis. The dust removal member is located below the brake shoe plate.

A brake disk or drum has at least one working surface which opposes a braking member such as a brake pad or shoe. A plurality of spaced, raised island formations are provided across the working surface, with channels extending between the island formations. Each raised island formation has an outer surface which contacts a brake pad or brake shoe during braking.

The positioning device for the safety brake comprises a brake support, and brake shoes are symmetrically arranged on the left side and the right side of the brake support; the movable plate is attached to the lower end of the brake support, and first rolling wheels are symmetrically arranged on the movable plate; the bearing plate is mounted at the upper end of the moving plate; the supporting assembly is arranged on the moving plate; the brake wheel is arranged on the supporting assembly in an attached mode. According to the positioning device for the safety brake, the gravity of a brake wheel can be prevented from being directly applied to a brake shoe through the supporting and positioning structure in the assembly process of the brake wheel, the brake shoe can be conveniently and rapidly adjusted in the follow-up process, the situation of installation deviation of the brake wheel in the installation process is avoided through the positioning structure, and the service life of the brake wheel is prolonged. The device is simple in structure and convenient to use, the braking effect of the brake shoe can be effectively guaranteed, the device is arranged to be of a detachable structure, brakes of different sizes can be positioned and assembled, the purpose of disassembling the device can be achieved, and the device is convenient to carry.

The utility model discloses a manual release device for parking braking of a rail locomotive vehicle, and aims to overcome the defect that the manual release device for parking braking is failed due to the fact that a sliding block is easily blocked by a manual release device for braking adopting a sliding block-guide rod structure. The pawl and the ratchet wheel are arranged in an offset mode, the pull rod is used for controlling the pawl to rotate, the pawl is connected in the relieving box in a hinged mode and can abut against the ratchet wheel, the ratchet wheel and a non-self-locking screw rod which is in transmission connection with a brake shoe to move are coaxially arranged and are in transmission connection, the pawl comprises a pawl body and a pawl handle, and the pull rod is connected with a sliding rod. The sliding rod is inserted into a guide sleeve of the relieving box and is in sliding connection with the guide sleeve, a check block is arranged at the end of the sliding rod, a movable groove is formed in the check block, and the claw handle extends into the movable groove. The claw handle is contacted in the mode that the movable groove is formed in the check block on the pull rod, so that the pull rod only bears axial tension, and the situation that in an original structure, due to the fact that the sliding block bears eccentric torsional moment from the claw handle, the sliding block is easily pulled or clamped on the guide rod in the resetting process is avoided.

The invention provides a bidirectional self-locking speed governor for an elevator. The bidirectional self-locking speed governor comprises a box body, a centrifugal clutch mechanism and a worm and turbine transmission mechanism, wherein the centrifugal clutch mechanism and the worm and turbine transmission mechanism are arranged in the box body; the toothed guide rail is meshed with a driving gear in the centrifugal clutch mechanism, so that the synchronous movement of the bidirectional self-locking speed limiter for the elevator and the elevator car is realized; the standby and starting work of the two-way self-locking speed limiter for the elevator is achieved through separation and combination of the centrifugal clutch mechanism. When the elevator stalls, the centrifugal part is thrown out of the limiting ejector block clamping the driven shell under the action of centrifugal force, the worm and turbine transmission mechanism connected with the driven shell is driven, and meanwhile the worm and turbine transmission mechanism is driven to achieve work of the elevator two-way self-locking speed limiter. The worm and turbine mechanism can be automatically locked in the working process; after working, the bidirectional self-locking speed limiter for the elevator can be reset by prying a driven shell of a centrifugal clutch mechanism through a turning gear or a tool; the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe are connected, and the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe and external components form a complete elevator system; when the elevator is lifted or falls and stalls, the bidirectional self-locking speed limiter for the elevator automatically drives the brake rod assembly, and the brake rod assembly jacks up the brake shoes in the bidirectional safety tongs to clamp the guide rails to achieve the braking effect.

The utility model provides a tricycle brake disc relates to brake disc technical field, including the support shell, the top fixedly connected with two support blocks of support shell, the top of support block is established with the axle hole, the bottom fixedly penetrates to the bottom of support shell of axle hole, the top of support shell is provided with the rotating lever, the top fixedly connected with the rotating plate of rotating lever, two the top of rotating plate is provided with the support plate, the inner wall rotationally connected with the axle of axle hole. The utility model, through fixedly connecting two support blocks in the top of support shell, and establishing the axle hole in the top of support block, makes rotating lever can drive rotating plate to carry out effective rotation control, the rotary connection of rotating plate and support plate makes whole brake system can realize more even brake force distribution, especially, in the design, the inner wall fixedly connected baffle of brake shell's one side, and fixedly connected through the spring, makes baffle can rebound quickly in the brake process, ensures that the contact of brake shoe and brake disc is more even.

The utility model provides a resetting device, a bogie and a vehicle, the resetting device comprises a mounting cylinder arranged on the bogie, the mounting cylinder extends along the vertical direction, and a containing cavity is arranged in the mounting cylinder; the first end of the connecting piece is arranged on a brake beam of the bogie; and the moving part is movably arranged in the containing cavity, the second end of the connecting part is connected with the moving part, and when the brake beam is switched to the running state from the braking state, the moving part moves downwards in the containing cavity so as to drive the brake beam of the bogie to restore to the running state. By means of the technical scheme, the problems that in the related technology, a sliding groove in a side frame is affected by the environment, rusting, impurities and the like occur, and then the braking device cannot be recovered from the braking state to the running state due to the influence of increased friction force, and the service life of the braking device is affected can be solved. The service life of the wheel and the brake shoe is influenced by abnormal abrasion between the brake shoe and the wheel.

The utility model provides a bicycle which can be safely used according to the original shape under the condition that a front wheel brake is not adjusted even if the bicycle is directly delivered to a user in a folded and shrunk packaging state, and can be easily and safely carried to a suburban park through the bicycle. And it is ensured that the bicycles in the indoor storage place can be better stored. The bicycle (1) is provided with left and right handlebar handles (2) which are provided with brake pull rods (3) and can be bent backwards. The side face of the front wheel 4 abuts against the frame lower tube 5 in the state that the handlebar is rotated by 180 degrees approximately. And a band brake assembly 8 disposed between the front fork 6 and the hub 7 of the front wheel 4. The front wheel brake is a belt brake, so that even if the bicycle is directly delivered to a user, the bicycle can be safely started and used according to the original shape without adjusting the left brake shoe and the right brake shoe like a caliper type brake.

A brake system may include: a drum; a brake shoe including a frictional member applying frictional force to the drum; a motor moving the brake shoe; a force sensor detecting clamping force of the frictional member to the drum; and a controller electrically connected to the motor and the force sensor, and the controller may determine a first position of the frictional member to the drum at a braking force generation start time based on current applied to the motor or torque of the motor upon controlling the motor for braking, and control the motor so that an interval between the drum and the frictional member is adjusted based on the first position when the force sensor is in a failure state upon controlling the motor for releasing the braking.

The utility model relates to the technical field of tunnel construction, in particular to an anti-slip device of a tunnel frequency conversion locomotive, which comprises a frame, a track and a brake cylinder, the surface of the frame is fixedly connected with a mounting plate, an output shaft of the brake cylinder is fixedly connected with a four-claw connecting piece, and the surface of the four-claw connecting piece is movably connected with a secondary connecting piece. Through the connection of the output shaft of the brake cylinder and the four-claw connecting piece, under the connection of the first brake rocker and the first pull rod and the connection of the second brake rocker and the second pull rod, the action angles of the first brake rocker and the second brake rocker are changed by changing the length of the output shaft of the brake cylinder; under the connection of the first brake shoe and the first brake rocker and the connection of the second brake rocker and the second brake shoe, the contact friction force is increased through the abutting contact of the first brake shoe and the second brake shoe with the track, the anti-slip effect on the locomotive is achieved, and the use safety performance of the locomotive is improved.

The invention discloses an automatic assembly system for brake shoe iron sheets, which comprises a feeding mechanism for feeding iron sheets; the receiving mechanism is connected with the tail end of the feeding mechanism and used for limiting the stroke of the iron sheet; and the die-casting mechanism comprises a power arm and a gripper, the gripper is provided with a plurality of insert assemblies, and the insert assemblies are used for obtaining the two iron sheets from the material receiving mechanism at the same time. According to the arrangement, iron sheets enter the material receiving structure from the feeding mechanism, the power arm drives the gripper to obtain the iron sheets from the material receiving mechanism, in the process, the insert assembly obtains two iron sheets from the material receiving structure at the same time, the power arm drives the gripper to enter the die casting equipment for die casting, and the two iron sheets are die-cast into a brake shoe at the same time at a time; the die-casting efficiency is improved, the two iron sheets are pressed into the brake shoe at the same time, the die-casting consistency of the two iron sheets is guaranteed, and the rate of finished products is improved. The invention further discloses an automatic assembly method of the brake shoe iron sheet.

The disclosure relates to an electromechanical brake for a motor vehicle. The electromechanical brake comprises an actuating piston which is set up to be moved translationally in a direction of a piston axis in order to actuate at least one brake shoe. The electromechanical brake also comprises a brake carrier having a gas-containing piston chamber in which the actuating piston is received such that it can be moved translationally in a direction of the piston axis. Furthermore, the electromechanical brake comprises an electric motor for driving the actuating piston. In the case of the electromechanical brake, a venting device is provided, which is set up to vent the piston chamber with respect to an exterior. The disclosure also relates to a disc brake, to a brake system, and to a motor vehicle.

The following description relates to a braking device (13) for a car (5.1, 5.2, 5.3) of an elevator system (1), comprising a braking device housing (14) designed to be mounted on the car (5.1, 5.2, 5.3) and subjected to a braking force in a first transverse direction (Q.1), a brake shoe (16) and a brake lining (17), wherein the brake shoe (16) is wedge-shaped with a first chamfer (19.1), wherein the braking device housing (14) has a second chamfer (19.2) and the brake shoe (16) can slide on the second chamfer (19.2), wherein a spring element (20) is arranged between the braking device housing (14) and the brake shoe (16) which pushes the brake shoe (16) upwards, wherein roller plates are provided on the chamfers (19.1, 19.2). (21.1, 21.2) are held and wherein between the inclined surfaces (19.1, 19.2) a linear roller bearing (23) with a plate-shaped roller cage (23.1) and rollers (23.1) received therein is located.2) is arranged, wherein the linear roller bearing (23) is covered in a second transverse direction (Q.2) by a retaining element (26).

A cable sleeve for use with a safety cable of a fall protection system. The cable sleeve has a braking system that includes a constant-contact wheel, a rotor that is connected to the constant-contact wheel, a cam plate, and a braking shoe. The rotor may have a permanent magnet and a magnetically susceptible item that is held in a disengaged position by the permanent magnet. Rotation of the constant-contact wheel can overcome the magnetic force and cause the item to move so as to engage with the cam plate and actuate braking by the braking shoe.

The invention discloses a modularized small self-propelled crawler rotary cultivator which comprises a frame, a seat, a bridge, a crawler walking wheel assembly, a machine tool assembly, an engine, a walking gearbox and a PTO transmission case, the bridge is detachably connected with the front end of the frame, and the machine tool assembly is detachably connected with the rear end of the frame through a machine tool connecting frame; the engine is located between the seat and the machine tool assembly, the PTO transmission case is arranged below the engine, and the walking gearbox is arranged below the seat; a brake drum assembly is arranged on one side of the walking gearbox and comprises a shell, an end cover, a brake drum, a brake shoe and a brake cam. A walking clutch operating handle is arranged on the front portion of the walking gearbox, and the walking clutch operating handle and the brake drum assembly are located on the same side of the walking gearbox. A modular structure is formed, the size is smaller, and meanwhile driving operation and maintenance are more convenient.

The invention provides a detection system, and relates to the technical field of elevator safety detection, the system comprises a parameter acquisition module and a fault analysis module; the parameter acquisition module is used for acquiring braking data of a brake in the elevator in real time; wherein the brake data comprises brake shoe clearance degree, temperature and oil pressure; the fault analysis module is used for performing fault analysis based on the braking data and determining the fault condition of the brake; wherein the fault analysis comprises brake shoe clearance degree analysis, temperature analysis and oil pressure analysis; the fault conditions of the brake include the abnormal condition of a brake-shoe gap, the abnormal condition of temperature and the abnormal condition of oil pressure. The braking data of the brake are obtained in real time through the parameter obtaining module, the fault condition of the brake is determined based on the braking data through the fault analysis module, the fault condition of the brake does not need to be detected through manual spot inspection any more, and the situation that the false alarm rate and response delay are too high during fault detection is avoided.