23 results about "Railway brake" patented technology

The invention relates to the field of rail transit, in particular to an accelerated test method for the abrasion life of a material for a high-speed rail braking system. Acceleration test equipment used in the method comprises a rotating main shaft, a rotating disc, a precise loading and feeding device, an environmental atmosphere control system, an infrared temperature measuring device, a data acquisition system and a computer, an equivalent dynamic energy dissipation method is adopted, and the braking energy density and dynamic energy dissipation of a 1: 1 braking test bed are determined; and calculating test parameters for acceleration test equipment, namely test speed, load and single energy dissipation, and realizing the acceleration test on the wear life of the to-be-tested high-speed rail brake material by adjusting the total dynamic energy dissipation amount of the test. Acceleration test equipment and an equivalent energy dissipation test method are adopted, the problems that in the prior art, the sliding linear speed of a friction pair is insufficient, the loading and environment atmosphere are inconsistent with the actual working condition, and the brake lining material abrasion life evaluation period is long are solved, and the time needed by a life test can be effectively shortened.

The present invention discloses a brake analysis method and system, which relates to the field of railway brake detection technology. The method comprises: obtaining a railway train image, axle counting data, and a car number label; determining the carriage number information based on the axle counting data and the car number label; performing target detection on the railway train image based on a target detection model of a first improved YOLOv8m network, and calculating the length of the bellows when the image contains a bellows and a brake cylinder head; issuing a wind lock risk warning when the bellows length exceeds a preset length threshold; and when the image contains a chain, performing chain segmentation on the chain detection frame area image based on an instance segmentation model of a second improved YOLOv8m‑Seg network; and processing the chain segmentation results to obtain the chain bending degree; issuing a chain lock risk warning when the bending degree exceeds a preset bending threshold. The brake detection accuracy of the present invention reaches the millimeter level, which can effectively prevent braked vehicles from slipping during peak hours and ensure the safety of train operation.

The invention relates to the technical field of rail looseness prevention, in particular to a railway braking rail self-fastening device which comprises a braking unit, a fastening assembly and a rail body connected to the braking unit, the fastening assembly comprises a clamping plate and a plurality of adjusting pieces, and a limiting cavity allowing the bottom of the rail body to be embedded is formed in one end of the clamping plate; an adjusting cavity is formed in the surface, facing the brake unit, of the clamping plate, positioning cavities are formed in the surfaces of the adjusting pieces, an embedded block is connected to the inner wall of each positioning cavity, an embedded groove is formed in the bottom wall of each adjusting cavity, and the surface of each embedded block abuts against the inner wall of the corresponding embedded groove to form limiting. And the rail body and the brake unit clamp the clamping plate and the plurality of adjusting sheets to form fixation. Through the arrangement of the clamping plate and the adjusting sheets, the clamping plate and the adjusting sheets are clamped by the clamping plate and the brake unit to form a fixed and filled rail body thinned volume, the contact area of the rail body and a train hub is ensured to be constant, the rail body is not prone to cracks after being used for a long time, and therefore the running safety of a train is improved.

The utility model discloses a warm forging forming device for high strength bolt of high -speed railway brake system is applied to, relates to forging technical field, the utility model discloses a frame for supporting integral device, the frame outer wall is fixedly connected with first limit block, still include forming stripping assembly, set up in the inside of frame, and the metal of heating is completed and is formed stripping, auxiliary assembly, set up in the inside of frame, be used for the auxiliary forming stripping assembly, lubricating assembly, set up on the frame, be used for preventing the deformation of the metal piece after forming in the stripping process, the utility model discloses the metal piece after heating is extruded into the lower mould in upper mould, makes the metal piece form, when the upper mould rises, will drive stripping axle and move upwards to the metal piece after forming fast separates from the lower mould in, and in the process of the upper mould descending and rising, will through fixed column and continuously extrude second fixed block, make knock block continuously knock lower mould.

The utility model discloses a railway brake deceleration support which comprises a fixing block installed on one side of a rail, one side of the fixing block is fixedly connected with a plurality of guide rods, the outer sides of every two adjacent guide rods are connected with sliding blocks in a sliding mode, the two sides of the fixing block are each provided with an insertion assembly for fixing the sliding blocks, and the insertion assemblies are connected with the guide rods in a sliding mode. A rotating block is arranged between the two sliding blocks, a mounting hole is formed in the top of the rotating block, a sliding sleeve is fixedly connected into the mounting hole, and a retarder is slidably connected into the sliding sleeve. According to the utility model, broken stones can be prevented from entering the sliding sleeve when the retarder is disassembled, the influence of the broken stones on the use of the retarder is prevented, the safety of the disassembly of the retarder is improved, the rotation of the rotating block can be avoided when the retarder does not need to be disassembled, the stability of the use of the speed reduction bracket is improved, and the working efficiency is improved. In addition, the sliding block can be prevented from moving on the guide rod in the using process of the speed reduction support, and the using stability of the speed reduction support is further improved.

The purpose of the present invention is to mitigate shock transmitted to a linear motion mechanism that converts rotational motion into linear motion. This linear motion device is provided with: a drive unit that outputs rotation; a linear motion mechanism that converts the rotational motion input from the drive unit into linear motion; a cylinder that accommodates a fluid to which linear motion is input from the linear motion mechanism; and an output member to which the linear motion input from the linear motion mechanism is transmitted via the fluid.

The utility model belongs to the field of railway locomotive application and maintenance, and provides a portable railway brake detection device, which comprises a main body frame used for holding to detect a railway brake air pipeline; the operating mechanism is fixedly arranged on the main body frame and is used for detecting the operation of the railway brake air pipeline; the main body mechanism is fixedly arranged on the main body frame and is used for processing railway brake air pipeline detection data; the detection mechanism is arranged on the main body frame and is used for contact detection of the railway brake air pipeline; the device can process key features in sound signals, effectively recognize and classify complex sound modes, more accurately recognize specific ultrasonic signals generated by brake pipe leakage and improve the detection accuracy, the signal acquisition silicon microphone can quickly and accurately position leakage points of the brake pipe, and the detection accuracy is improved. Potential safety hazards are found in time, train safety accidents caused by brake pipe leakage are avoided, and the safety of railway transportation is improved.

The invention discloses a lever type diverter valve and a brake system, and relates to the technical field of railway brake valves, the lever type diverter valve comprises an acting part, a control part, a weight following part and a balance beam; the acting part and the control part are arranged at the two ends of the upper portion of the balance beam and apply pressure to the left end and the right end of the balance beam. The weight-following part is partially located at the bottom of the balance beam and makes contact with the bottom of the balance beam, and the contact position of the weight-following part and the bottom of the balance beam can be adjusted. The contact position of the weight following part and the bottom of the balance beam is located between the acting part and the control part. The lever type diverter valve is simple in principle, the proportion of the diverted pressure air amount to the pressure air amount flowing into the brake cylinder is only related to the vehicle load, the larger the load is, the less the pressure air diverted into the pressure reduction air cylinder is, the more the pressure air flowing into the brake cylinder is, and the larger the brake cylinder pressure is.

The invention relates to a railway braking system comprising an actuation mechanism (15) and a rotary actuation device (16) configured to be manually actuated in rotation in a first direction and to actuate the actuation mechanism to place the system in a configuration with the parking handbrake clamped, and in a second direction and to actuate the actuation mechanism to place the system in a configuration with the parking handbrake released; the rotary actuation device comprising a main body (25) rotatably mobile and connected to the actuation mechanism, and an additional gripping member (30) configured to have a retracted position in which only the main body can be manually actuated in the first direction, and a deployed position in which the additional gripping member at least partially projects from the main body and both the main body and the additional gripping member can be manually actuated in the second direction.

The invention discloses a railway brake valve fault prediction model construction method and a railway brake valve fault prediction method, and relates to the field of railway safety, the railway brake valve fault prediction model construction method comprises the steps that a first neural network model is constructed, and the first neural network model comprises an input layer, a feature extraction layer and a first output layer; training the first neural network model through fault data of the 120-type truck air control valve, freezing network parameters of an input layer and a feature extraction layer after training, and replacing a first output layer with a second output layer to obtain a second neural network model; training the second neural network model through the fault data of the 104 type passenger car air distribution valve to obtain a railway brake valve fault prediction model; when the fault data of the 104 type passenger car air distribution valve is less, the railway brake valve fault prediction model which can accurately predict the fault risk of the 104 type passenger car air distribution valve can be obtained through training.

This invention relates to a high-temperature resistant, self-recovering railway brake pad, belonging to the technical field of railway braking devices. It includes a clamping plate, in which connecting posts are rotatably mounted within multiple equidistant circular grooves on the front side of the clamping plate. Mounting plates are fixed to the front of the connecting posts. Buffer adjustment components are provided between the mounting plates and the clamping plate. Brake pads are fitted and slidably mounted within the grooves on the front side of the mounting plates. Through the cooperation of the reset component, mounting posts, friction blocks, and brake pads, the friction blocks can automatically reset after braking. The reset spring in the reset component restores the friction blocks to their initial gap state after braking, achieving chip removal and heat dissipation. The cooperation between the buffer adjustment component and the mounting plates allows the buffer spring in the adjustment groove to buffer the mounting plate during high-speed emergency braking, preventing damage to the friction blocks due to instantaneous impact and improving the service life of the friction blocks.

[Task] A shock is damped, which is transmitted to a linear motion mechanism 5, which converts a rotary motion into a linear motion. [Solution] A linear motion device 1 includes a drive unit 2 that outputs rotation, a linear motion mechanism 5 that converts rotational motion input from the drive unit 2 into linear motion, a cylinder 6 that accommodates a fluid L into which the linear motion is input from the linear motion mechanism 5, and an output member 7 to which the linear motion input from the linear motion mechanism 5 is transmitted via the fluid L.

The utility model discloses a continuous valve cover press-fitting structure for assembling a railway vehicle brake valve, which comprises an operation table and a vertical frame arranged on the operation table, a downward pressing mechanism is arranged on the vertical frame, and a rotary driving mechanism is arranged at the lower part of the operation table. A rotary driving mechanism is arranged in the valve cover limiting groove, the output end of the rotary driving mechanism extends to the upper portion of the operation table and is connected with the rotary table, and a rotary supporting component is arranged between the rotary table and the operation table. The ejector block is placed on the valve cover body and clamped through the pneumatic clamping assembly, at the moment, automatic centering between the ejector block and the center through hole of the valve cover body can be achieved, the downward pressing mechanism is controlled to act, the lower end of the ejector block is pressed into the center through hole in the valve cover body, the clamping assembly is controlled to be started to reset, and limiting on the ejector block is relieved; and the downward pressing mechanism is controlled to continue downward pressing, and the ejector block is completely pressed in place.

The present invention discloses a chain-lock recognition method, system, device, and storage medium, relating to the technical field of railway brake detection. The method comprises: inputting an image to be detected into a trained target detection model based on a first improved YOLOv8m network for detection to determine whether a chain exists in the image to be detected; if a chain exists, inputting an image of the chain detection frame area into a trained instance segmentation model based on a second improved YOLOv8m‑Seg network for chain segmentation; for the chain mask image output by the instance segmentation model, a parabola fitting algorithm is used to extract the centerline of the chain, and the degree of curvature of the chain is evaluated based on the ratio of the chain arc depth to the chain chord length; if the degree of curvature is greater than a preset curvature threshold, a brake risk warning is issued. The present invention achieves efficient detection and positioning of chains and precise segmentation of chains. Experiments have shown that the chain-lock recognition accuracy of the present invention exceeds 95%.

The invention relates to the technical field of railway brake valve assembly, in particular to modular railway brake valve intelligent assembly equipment which comprises a bottom plate and two side plates fixedly connected to the upper surface of the bottom plate, a placing plate is fixedly connected to the upper surface of the bottom plate, and a translation assembly is arranged on the surface of the bottom plate. The translation assembly comprises a cross rod connected between the two side edge plates in a sliding mode, one side of the cross rod is rotationally connected with a connecting shaft, an inserting rod is inserted into an inserting hole formed in the connecting shaft, the cross rod can drive the connecting shaft to move transversely, and when the cross rod moves transversely, the inserting rod can slide in the connecting shaft. A clamping assembly is arranged at the end of the connecting shaft. Through basic support of the bottom plate, the placing plate and the side edge plate and cooperation of the translation assembly, the rotating assembly and the clamping assembly, automatic operation of railway brake valve assembly is achieved, manual valve body overturning is not needed in the whole process, the labor intensity of operators is greatly reduced, and meanwhile the assembly efficiency is improved.

The application provides a railway brake cylinder piston processing residual wall thickness detection device and method, and relates to the technical field of thickness detection. The device comprises a detection plate, one side of the detection plate is provided with a detection groove, the side groove wall, groove bottom and the other side groove wall of the detection groove are sequentially connected to form a U shape, the length of the side groove wall of the detection groove is not greater than the first vertical distance between the other end face of the piston and the foot, and the width of the groove bottom of the detection groove is not greater than the second vertical distance between the outer periphery of the first rib plate and the foot. When the detection method utilizes the detection device, the detection plate is pushed towards the direction of the groove bottom of the piston groove until the detection plate cannot move. If the groove bottom of the detection groove and the other side groove wall of the detection groove are respectively attached to the other end face of the piston and the outer periphery of the first rib plate at this time, it is determined that the residual thickness is unqualified, otherwise, it is determined that the residual thickness is qualified.

The invention belongs to the technical field of piston assembly production and manufacturing, and particularly relates to a railway brake cylinder piston assembly automatic machining device which comprises a piston supporting base used for being matched with and pressing a piston. The piston rotating module is used for driving a piston to rotate automatically; the drilling and riveting module is used for drilling and riveting the piston; the piston rod press-fitting module is used for mounting the piston rod on the piston; the piston rod press-fitting module comprises a piston rod positioning device and a press-fitting driving assembly. The pistons are fixed, compatible supporting of different pistons can be achieved by adjusting the piston supporting base and the piston rotating module, and different machining treatment angles are switched; the piston rod press-fitting module can press the piston rod into the piston, and the piston rod is fixedly connected with the piston through the riveting assembly. According to the piston machining device, the automation degree in the piston machining process is improved, the machining precision and efficiency are improved, errors caused by manual operation are avoided, and potential safety hazards are reduced.

The present invention provides a railway state monitoring device, a railway vehicle bogie, a railway vehicle, and a railway brake control device. One of the purposes is to provide a railway state monitoring device that can improve versatility. The railway state monitoring device (20) comprises: an acquisition unit (30) mounted on the bogie of a railway vehicle (100) and acquiring state information related to one or more of vibration, speed, acceleration, sound, reflected light, image, temperature, humidity, and wheel diameter; a determination unit (44) mounted on the bogie and determining the state of the track (8) on which the bogie is traveling or the state of the bogie (10) based on the state information acquired by the acquisition unit (30) and providing the determination result of the determination unit; a transmission unit (48) mounted on the bogie and transmitting the determination result to the outside of the bogie; and a power supply unit (70) mounted on the bogie and supplying power to the acquisition unit (30) and the transmission unit (48).

This invention relates to the field of rail transit vehicle technology and discloses a structure and method for accelerating the exhaust of air from the train pipe of a railway brake. In this structure, an emergency chamber, an inflation throttle orifice, and a service brake exhaust valve are sequentially connected via a train pipe. The node between the emergency chamber and the service brake switch valve is connected to a train pipe pressure reduction speed sensing valve via the train pipe. The node between the emergency chamber and the service brake switch valve is connected to an emergency brake exhaust valve via the train pipe. The node between the inflation throttle orifice and the service brake exhaust valve is connected to the emergency brake exhaust valve via the train pipe. The emergency chamber exhaust throttle orifice is open to the atmosphere. This invention solves the problems of long train pipe exhaust time, long train braking distance, and large longitudinal impact force during train braking existing technologies.

The invention relates to a railway braking system comprising an actuation mechanism (15), a rotary actuation device (16) configured to be manually driven in rotation in a first rotation direction and to actuate said actuation mechanism to put said system in a parking handbrake clamped configuration, and to be manually driven in rotation in a second rotation direction opposite to said first direction and to actuate said actuation mechanism to put said system in a parking handbrake unclamped configuration, and a control mechanism (22) mechanically connected to said actuation mechanism, configured to inhibit the action of said actuation device and / or of said actuation mechanism on a braking linkage at least when said actuation device is manually driven in rotation in said first rotation direction and exerts a torque on said actuation mechanism exceeding a first predetermined threshold.

The present invention discloses a method, system, device, and storage medium for identifying wind brakes, and relates to the field of railway brake detection technology. The method comprises: using an improved YOLOv8m network to detect whether an image contains a bellows rod and a brake cylinder head; if the bellows rod and the brake cylinder head are contained, the bellows rod length is calculated; when the bellows rod length exceeds a preset length threshold, a brake risk warning is issued; wherein, a spatial pyramid pooling module and a partial self-attention module are introduced in the fourth stage of the original YOLOv8m backbone network; and a coordinate attention mechanism is introduced in the third stage of the neck network. The present invention adaptively adjusts feature weights so that the detection model can focus on the target boundary more accurately, thereby achieving efficient detection and positioning of the bellows rod. Experiments show that the accuracy of target detection of the present invention can reach the millimeter level, and the recognition rate of the bellows rod is as high as 99.9%.

The application discloses a railway brake clamp detection tool, and relates to the brake clamp detection field, the railway brake clamp detection tool comprises a workbench, the top outer wall of the workbench is provided with a detection mechanism, and two sides of the top outer wall of the workbench are respectively provided with an installation assembly used for installing a brake clamp and a control panel; the installation assembly and the control panel are located on the two sides of the detection mechanism respectively. The two detection assemblies are arranged in the detection mechanism, the clamping force of the brake clamp can be conveniently detected through the pressure sensors in the detection assemblies, the detection accuracy is improved through synchronous detection of the two pressure sensors, meanwhile, the detection assemblies and the installation assemblies in the scheme are convenient to operate, and later maintenance is facilitated; the problem that an existing brake clamp detection device is inconvenient to operate and maintain is solved.