33results about How to "Avoid Braking Accidents" patented technology

A valve element filter net for a brake valve comprises an upper circular end bracket, a lower circular end bracket, and support columns which are connected between the upper circular end bracket and the lower circular end bracket, wherein a cylindrical filter net body is arranged on the inner sides or the outer sides of the support columns; the upper end of the filter net body is connected with the upper circular end bracket; the lower end of the filter net body is connected with the lower circular end bracket; the upper circular end bracket and the lower circular end bracket are connected with an annular upper sealing edge and an annular lower sealing edge of which the cross sections are wedge-shaped; the upper end face of the upper sealing edge is a conical surface with a high outer part and a low inner part and the lower end face of the lower sealing edge is also a conical surface with a low outer part and a high inner part; flexible connection is adopted between the upper and lower sealing edges and the upper and lower circular end brackets. The valve element filter net for the brake valve has the advantages that the structure is simple, the installation is convenient, the valve element filter net can be loaded into the exterior of the brake valve, in particular a brake main valve, the filter net is directly arranged around a valve element, solid particles carried in gas are prevented from entering the valve element, thus the work reliability of the valve element is greatly improved, and the occurrence of a brake accident is avoided.

The invention discloses a Jianghuai main brake valve provided with a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention provides a North-benz braking main valve with a decelerator and a filter net. The filter net is arranged in the braking main valve. The filter net is simple in structure and convenient to mount, and can be mounted outside a valve core of the braking valve for being directly arranged around the valve core, so that solid particles carried in gas can be prevented from entering the valve core, and accordingly, the working reliability of the valve core is promoted by a large margin, and the accidents related to braking are prevented from occurring.

The invention discloses a Jianghuai main brake valve provided with a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention provides a North-benz braking main valve with a decelerator and a filter net. The filter net is arranged in the braking main valve. The filter net is simple in structure and convenient to mount, and can be mounted outside a valve core of the braking valve for being directly arranged around the valve core, so that solid particles carried in gas can be prevented from entering the valve core, and accordingly, the working reliability of the valve core is promoted by a large margin, and the accidents related to braking are prevented from occurring.

The invention discloses a brake main valve of a Jiefang 151 belt filter screen, wherein a filter screen is arranged in the brake main valve. The filter screen is simple in structure, convenient to mount, and capable of being mounted outside a valve element of the brake valve; the filter screen is directly arranged around the valve element, and solid shells carried in air can be prevented from entering the valve element, so that the working reliability of the valve element is greatly increased, and brake accidents are avoided.

The invention discloses a two-stage and three-stage snub brake main valve provided with a filter screen and a retarder for Dawei series. The snub brake main valve comprises a pedal seat, an upper body, a middle body and a lower body which are sealed and fixed together, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The structure of an upper part ring-shaped inner flanging and a lower part ring-shaped outer flanging is adopted by the snub brake main valve, so that the structure of the spring clamp sleeve is simplified, the processing difficulty and the assembly difficulty are reduced, and the yield of products can be greatly improved. The filter screen of a valve core of a brake valve in the invention is simple in structure and convenient to install, and can be arranged outside the valve core of the brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention discloses a Jiefang 141 main brake valve provided with a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention discloses a two-stage and three-stage snub brake main valve provided with a filter screen for Dongfeng 140. The snub brake main valve comprises an upper body, a lower body, a tappet rod, a tappet rod seat, a piston and a valve, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The structure of an upper part ring-shaped inner flanging and a lower part ring-shaped outer flanging is adopted by the snub brake main valve, so that the structure of the spring clamp sleeve is simplified, the processing difficulty and the assembly difficulty are reduced, and the yield of products can be greatly improved. The filter screen of a valve core is simple in structure and convenient to install, and can be arranged outside the valve core of a brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention discloses a Hanwag main brake valve provided with a retarder and a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention discloses a main braking valve with a decelerating and filtering screen for Jianghuai vehicles. The decelerating and filtering screen is arranged in the main braking valve, for the decelerating and filtering screen, the structure is simple, the mounting is convenient, and the decelerating and filtering screen can be mounted outside a valve core of a braking valve and directly arranged around the valve core. Through the adoption of the main braking valve, the situation that solid shell bodies which are carried in gas enterthe valve core can be avoided, so that the operational reliability of the valve core is greatly improved, and braking accidents are avoided.

The invention discloses a five-hole two-stage and three-stage snub brake main valve provided with a filter screen for Deron series. The snub brake main valve comprises an upper body and a lower body which are sealed and fixed together, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The structure of an upper part ring-shaped inner flanging and a lower part ring-shaped outer flanging is adopted by the snub brake main valve, so that the structure of the spring clamp sleeve is simplified, the processing difficulty and the assembly difficulty are reduced, and the yield of products can be greatly improved. The filter screen of a valve core of a brake valve in the invention is simple in structure and convenient to install, and can be arranged outside the valve core of the brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention belongs to the technical field of friction braking, and in particular relates to an interface-fusing, load-optimizing and fault-monitoring high speed train braking system. The system improves the condition that in the prior art, surface modification of friction particles on a brake pad in a braking system is single, stress concentration exists in the braking process and heat distribution of a braking interface is not uniform, and a troubleshooting function is added for the braking system. The technical scheme of the invention is as follows: a concept of combining different surface modifications for the friction particles is provided, thereby comprehensively utilizing advantages of various surface modifications; the mounting direction of the friction particles is optimized; aloading device is optimized; and an intelligent monitoring system is added for the braking system for fault online monitoring. By combining the advantages of the friction particles in different surface modification combinations organically, the braking reliability, safety and comfort of a high speed train are achieved. By monitoring parameters of the braking system in real time, health degree andproblems of the braking system are pre-judged.

The invention belongs to the technical field of friction braking, in particular to a high-speed train braking system integrating interface and loading optimization and fault monitoring. In the braking system in the prior art, the surface decoration of the friction particles on the brake pad is single, the stress concentration exists in the braking process, and the heat distribution of the braking interface is uneven, and the fault checking function is added to the braking system. The technical scheme of the present invention is as follows: the idea of ​​combining different surface modifications on friction particles is proposed, and the advantages of various surface modifications are comprehensively utilized; the installation direction of the friction particles is optimized; the loading device is optimized; an intelligent monitoring system is added to the braking system to conduct fault online monitor. The invention organically combines the advantages of friction particles with different surface modification combinations to realize the reliability, safety and comfort of the braking of high-speed trains; by monitoring various parameters of the braking system in real time, the health of the braking system can be predicted. and problems.

The invention discloses a Hanwag main brake valve provided with a retarder and a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention provides a HOWO braking main valve with a filter net. The filter net is arranged in the braking main valve. The filter net is simple in structure and convenient to mount, and can be mounted outside a valve core of the braking valve for being directly arranged around the valve core, so that solid particles carried in gas can be prevented from entering the valve core, and accordingly, the working reliability of the valve core is promoted by a large margin, and the accidents related to braking are prevented from occurring.

The invention discloses a Jiefang 141 main brake valve provided with a filter screen. The filter screen is arranged inside the main brake valve. The filter screen is simple in structure, is convenient to install, and can be arranged outside a valve core of the brake valve. The filter screen is directly arranged around the valve core, and solid particles carried in gas can be prevented from entering the valve core, so that the working reliability of the valve core is enhanced greatly, and braking accidents are avoided.

The invention provides a railway vehicle pressure acquisition device and a braking control device and method. The pressure acquisition accuracy can be improved, further dynamic vehicle weight can be more accurately obtained, and the calculation precision of braking power can be improved. According to the pressure acquisition device, the bogie of a railway vehicle is provided with a first air spring and a second air spring which are located on the left side and the right side, the pressure acquisition device comprises a balancing valve, the balancing valve is provided with a first pressure input port, a second pressure input port and a pressure output port, the first pressure input port is communicated with the air supply pipeline of the first air spring, the second pressure input port is communicated with the air supply pipeline of the second air spring, the pressure output port is used for outputting the average value of the air supply pressures of the first pressure input port and the second pressure input port and balancing the vehicle weight. The braking control method comprises the steps that the average value of the air supply pressures of the air springs in the bogie is obtained and serves as an acquired pressure value; the vehicle weight is calculated according to the acquired pressure value; required braking power is calculated and output according to the vehicle weight.

The invention discloses a two-stage snub braking structure and a three-stage snub braking structure provided with filter screens and used on Dongfeng 153. The two-stage snub braking structure as well as the three-stage snub braking structure comprises a pedal seat, an upper body and a lower body, which are fixed together in a sealing way, wherein a balance piston is sleeved in the upper part of the inner cavity of the upper body; a spring ferrule is sleeved with a primary balance spring; a secondary balance spring is sleeved in the spring ferrule; meanwhile a tertiary balance spring can also be arranged so as to increase the elastic pressure stage by stage and achieve high controllability; an upper valve seat is clamped and fixed on the inner side of an upper valve wall through an elastic collar; a lower valve seat is clamped and fixed on the inner side of a lower valve wall through an elastic collar; the valve element filter screens of a brake valve are simple in structure and convenient to mount, and can be mounted outside the valve element of the brake valve, especially a brake master valve; the filter screens are directly arranged at the periphery of the valve element, can prevent solid particles in air from entering the valve element, and thus greatly improves the working stability of the valve element; and brake accidents are avoided.

The invention provides a HOWO braking main valve with a filter net. The filter net is arranged in the braking main valve. The filter net is simple in structure and convenient to mount, and can be mounted outside a valve core of the braking valve for being directly arranged around the valve core, so that solid particles carried in gas can be prevented from entering the valve core, and accordingly, the working reliability of the valve core is promoted by a large margin, and the accidents related to braking are prevented from occurring.

The invention discloses a Delong-series secondary and third snub brake master valve with a filter mesh. The Delong-series secondary and third snub brake master valve with the filter mesh comprises a pedal seat, an upper body, a middle body and a lower body which are fixed together in a sealing manner; a balance piston is arranged at the upper part of the inner cavity of the upper body in a sleeving manner; a primary balance spring is arranged out of a spring clamping sleeve in the sleeving manner; a secondary balance spring is arranged in the spring clamping sleeve in the sleeving manner. An upper valve seat is clamped and fixed to the inner side of the wall of an upper valve through an elastic baffle ring; a lower valve seat is clamped and fixed to the inner side of the wall of a lower valve through an elastic baffle ring. According to the Delong-series secondary and third snub brake master valve with the filter mesh, the structure with an annular inner flange on the upper part and an annular outer flange on the lower part is adopted, so that the structure of the spring clamping sleeve is simplified; the machining difficulty and the assembling difficulty are reduced; the pass rate of products can be greatly improved. The filter mesh of a valve core of a brake valve disclosed by the invention is simple in structure and convenient to mount, and can be mounted in the outer part of the valve core of the brake valve, particularly the brake master valve; the filter mesh is directly arranged on the periphery of the valve core, so that solid shells carried in a gas can be prevented from entering the valve core; therefore, the work reliability of the valve core is greatly improved, and brake accidents are avoided.

The invention discloses a two-stage and three-stage snub brake main valve provided with a filter screen and a retarder for Dawei series. The snub brake main valve comprises a pedal seat, an upper body, a middle body and a lower body which are sealed and fixed together, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The structure of an upper part ring-shaped inner flanging and a lower part ring-shaped outer flanging is adopted by the snub brake main valve, so that the structure of the spring clamp sleeve is simplified, the processing difficulty and the assembly difficulty are reduced, and the yield of products can be greatly improved. The filter screen of a valve core of a brake valve in the invention is simple in structure and convenient to install, and can be arranged outside the valve core of the brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention discloses a five-hole two-stage and three-stage snub brake main valve provided with a filter screen for Deron series. The snub brake main valve comprises an upper body and a lower body which are sealed and fixed together, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The structure of an upper part ring-shaped inner flanging and a lower part ring-shaped outer flanging is adopted by the snub brake main valve, so that the structure of the spring clamp sleeve is simplified, the processing difficulty and the assembly difficulty are reduced, and the yield of products can be greatly improved. The filter screen of a valve core of a brake valve in the invention is simple in structure and convenient to install, and can be arranged outside the valve core of the brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention discloses a secondary and third snub braking main valve provided with a filter screen and a retarder and used for an Aowei series. The braking main valve comprises a pedal base, an upper body, a middle body and a lower body hermetically fixed as a whole, wherein a secondary balance spring disposed inside; the distance from the upper end of the secondary balance spring to a step surface of the lower end of a first rod body is L1; the distance from a step surface at the lower end of a second rod body to the upper end surface of a rod body cavity is L3; the distance from the upper end surface of a spring sleeve to the lower surface of a disc is L2; and the L3 is greater than L1 and less than L2. An upper valve base is clamped and fixed at the inner side of an upper valve wall through an elastic retainer ring; and a lower valve base is clamped and fixed at the inner side of a lower valve wall through an elastic retainer ring. The filter screen of a valve core of the braking valve is simple in structure, is convenient to mount, and can be directly mounted in the braking valve, in particular outside the valve core of the braking main valve; and the filter screen is directly arranged around the valve core for preventing solid particles carried in gas from entering the valve core, so that the working reliability of the valve core is largely improved, and braking accidents are prevented.

The invention discloses a main braking valve with a decelerating and filtering screen for Jianghuai vehicles. The decelerating and filtering screen is arranged in the main braking valve, for the decelerating and filtering screen, the structure is simple, the mounting is convenient, and the decelerating and filtering screen can be mounted outside a valve core of a braking valve and directly arranged around the valve core. Through the adoption of the main braking valve, the situation that solid shell bodies which are carried in gas enterthe valve core can be avoided, so that the operational reliability of the valve core is greatly improved, and braking accidents are avoided.

The invention discloses a two-stage and three-stage snub brake main valve provided with a filter screen for Dawei series. The snub brake main valve comprises a pedal seat, an upper body and a lower body which are sealed and fixed together, wherein a balance piston sleeves the upper part of an inner cavity of the upper body; a first stage balance spring sleeves the outer part of a spring clamp sleeve, and a second stage balance spring sleeves the inner part of the spring clamp sleeve; an upper valve seat is clamped and fixed at the inner side of the wall of an upper valve by an elastic check ring, and a lower valve seat is clamped and fixed at the inner side of the wall of a lower valve by another elastic check ring. The filter screen of a valve core of a brake valve in the invention is simple in structure and convenient to install, and can be arranged outside the valve core of the brake valve, especially, the valve core of the brake main valve; the filter screen is directly arranged around the valve core, a solid shell carried in gas can be prevented from entering the valve core, so that the work reliability of the valve core is greatly improved; therefore, the brake accidents can be avoided.

The invention discloses a two-stage and three-stage point brake structure with a filter screen, which includes a pedal seat, an upper body and a lower body sealed and fixed together, a balance piston is set on the upper part of the upper body cavity, and a spring ferrule is set outside There is a first-level balance spring, and a second-level balance spring is installed inside; at the same time, a third-level balance spring can also be set to increase the elastic pressure step by step and provide a strong sense of control. The upper valve seat is fixed on the inner side of the upper valve wall through the elastic retaining ring; the lower valve seat is fixed on the inner side of the lower valve wall through the elastic retaining ring. The brake valve spool filter has a simple structure and is easy to install. It can be installed outside the spool of the brake valve, especially the brake master valve. Into the spool, thereby greatly improving the reliability of the spool; avoiding brake accidents.

A valve element filter net for a brake valve comprises an upper circular end bracket, a lower circular end bracket, and support columns which are connected between the upper circular end bracket and the lower circular end bracket, wherein a cylindrical filter net body is arranged on the inner sides or the outer sides of the support columns; the upper end of the filter net body is connected with the upper circular end bracket; the lower end of the filter net body is connected with the lower circular end bracket; the upper circular end bracket and the lower circular end bracket are connected with an annular upper sealing edge and an annular lower sealing edge of which the cross sections are wedge-shaped; the upper end face of the upper sealing edge is a conical surface with a high outer part and a low inner part and the lower end face of the lower sealing edge is also a conical surface with a low outer part and a high inner part; flexible connection is adopted between the upper and lower sealing edges and the upper and lower circular end brackets. The valve element filter net for the brake valve has the advantages that the structure is simple, the installation is convenient, the valve element filter net can be loaded into the exterior of the brake valve, in particular a brake main valve, the filter net is directly arranged around a valve element, solid particles carried in gas are prevented from entering the valve element, thus the work reliability of the valve element is greatly improved, and the occurrence of a brake accident is avoided.