62results about "Axle-box lubrication" patented technology

The application discloses a movable shed railway transport flat car, and relates to the technical scheme points that the flat car comprises a chassis, end wallboards, side wallboards, a top plate, movable wallboards and a moving frame, the top plate is fixedly connected to the top of the side wallboards and the end wallboards, the moving frame can slide along the width direction of the chassis on the top of the chassis, and the moving frame can be completely moved to the top of the chassis; when loading and unloading goods, the movable wallboards are first rotated to be horizontal, then the moving frame is moved from the top of the chassis to the movable wallboards through the sliding of the moving frame, so that the moving frame moves out of the internal space of the flat car, loading and unloading of the goods is carried out outside the flat car, the loading and unloading of the goods has sufficient operation space, and thus loading and unloading operation of the goods is facilitated.

The application discloses a kind of crossing plate pull rod, belong to rail vehicle through passage technical field, the application includes the center pin shaft being connected with crossing plate by locking mechanism;Wherein, the bottom end of the center pin shaft is fixed with the pull arm that can be elastically stretched with the center pin shaft as center, the pull arm is configured to extend to the direction of the pedal of two sides in character type structure, the pull arm end is movably connected with rotating seat, so that the pull arm can be elastically adapted to vehicle operating condition in vertical plane and horizontal plane rotation, the application further discloses a kind of through passage, the through passage includes the above-mentioned crossing plate pull rod, the crossing plate pull rod of the application, with light weight, simple structure, and when running, it occupies smaller space, collision accident with crossing plate and pedal is not easy to occur, secondly, the center pin shaft is hinged with locking mechanism, reduces wear, effectively reduces train off-line risk.

The application discloses a fireproof floor, a cab and a locomotive. The fireproof floor comprises a floor frame, a fireproof layer, a filling layer, a bearing plate, a sound insulation layer and a surface layer. The floor frame has a first surface and a second surface, and the first surface and the second surface are oppositely arranged along the thickness direction of the floor frame. The fireproof layer is arranged on the first surface. The filling layer is filled in the floor frame and is used for heat insulation and sound absorption. The bearing plate is arranged on the second surface, and the filling layer is located between the fireproof layer and the bearing plate. The sound insulation layer is arranged on the side surface of the bearing plate away from the floor frame. The surface layer is arranged on the side surface of the sound insulation layer away from the bearing plate.

A railway carriage (100) comprising: - a carbody shell (1); - a plurality of seats (10); - at least one lining panel (20) which is fastened to an inner side of said carbody shell (1); characterized in that said at least one lining panel (20) integrates in its structure one or more anchoring portions (30, 32, 34) which are configured and mutually positioned to releasably attach thereto one or more seats (10) of said plurality of seats (10) aligned either along a first longitudinal row (101) where the attached one or more seats (10) face the interior of the railway carriage (100), and / or along a second traversal row (103) where the attached one or more seats (10) face the front part (102) or the back part (104) of the railway carriage (100).

The application discloses a kind of open roof rail vehicle body structure, including side wall, underframe, upper floor and staircase, the two sides of upper floor are connected with side wall, the lower end of staircase is connected to underframe, the upper end of staircase is connected to upper floor;Side wall, staircase and upper floor are all used profile structure, upper floor, staircase all include upper panel, lower panel and rib plate, rib plate is connected with upper panel, lower panel simultaneously, the lower panel of upper floor is welded and connected with side wall, the upper panel of upper floor is welded and connected with side wall by first connecting plate;Horizontal direction is extended on side wall and welded and fixed with backing plate, backing plate is used to support the lower panel of staircase.The application effectively solves the welding problem of staircase and underframe, side wall, and staircase is welded simply, and the stiffness and strength are sufficient, and is not easy to deform;Meanwhile, the application also avoids staff to side wall and upper floor in the lower of upper floor and upward welding, is favorable to guarantee the welding quality.

The embodiment of the present specification provides a railway freight car, which comprises a bottom plate, two end baffle plates arranged at two ends of the bottom plate along the length direction of the bottom plate, two side baffle plates arranged at two sides of the bottom plate along the width direction of the bottom plate, the two end baffle plates and the two side baffle plates being staggered and connected to form a containing space, and a top baffle plate arranged above the containing space, wherein the top baffle plate comprises a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are movably connected with the end baffle plates respectively, the first baffle plate and the second baffle plate move towards each other to make the top baffle plate in a closed state, and the first baffle plate and the second baffle plate move away from each other to make the top baffle plate in an open state.

This application discloses a rail vehicle and its integrated sound and heat insulation cover, relating to the field of rail vehicle technology. The integrated sound and heat insulation cover includes a sound and heat insulation cover body, which has an aluminum cover plate layer, a sound insulation layer, and a heat insulation layer. The sound insulation layer is used to block the mutual conduction of sound waves along both sides of its thickness; the heat insulation layer is used to block the mutual conduction of heat along both sides of its thickness. The aluminum cover plate layer, the sound insulation layer, and the heat insulation layer are arranged sequentially along the thickness direction of the sound and heat insulation cover body and are adhered to each other. The aluminum cover plate layer is located on the inner side of the integrated sound and heat insulation cover. This integrated sound and heat insulation cover can greatly improve the passenger experience while meeting the interior decoration requirements.

Embodiments of the present application disclose a train operation control method and device, electronic equipment and storage medium, belonging to the technical field of train control. The method comprises: when the crosswind speed is equal to or greater than a first preset threshold, determining a plurality of candidate guide vane configuration parameters according to the crosswind speed and a first running speed of the train; generating a plurality of groups of candidate parameters according to the crosswind speed, the first running speed and the plurality of candidate guide vane configuration parameters, inputting each group of candidate parameters into a pre-trained guide vane adjustment model to obtain a predicted aerodynamic load coefficient corresponding to each group of candidate parameters; in the predicted aerodynamic load coefficient corresponding to each group of candidate parameters, determining the candidate guide vane configuration parameter corresponding to the smallest predicted aerodynamic load coefficient as a target guide vane configuration parameter; and adjusting the running state of the train according to the target guide vane configuration parameter. The present application can timely control the train operation in the crosswind environment, thereby improving the train operation safety.

This invention relates to the field of rail vehicle technology, and more particularly to a snow skirt for rail vehicles, which is installed on the periphery of the bottom of the rail vehicle body, and the installation height of the snow skirt is at least partially lower than that of the lower skirt on the vehicle body; the snow skirt includes a skirt body and a first flexible buffer member; the skirt body is detachably installed on the periphery of the bottom of the rail vehicle body; the first flexible buffer member is installed on the top of the skirt body. A medium-low speed maglev vehicle is also provided. Compared with the prior art, the snow skirt for rail vehicles and the medium-low speed maglev vehicle of this invention can improve the snow protection capability of vehicles.

This invention discloses an Al-Mg-Zn aluminum alloy sheet with excellent strength, ductility, and lightweight properties, its preparation method, and applications. The alloy composition, by mass percentage, is: Mg 5.0-5.5%, Zn 1.5-2.0%, Mn 0.4-0.5%, Cu 0.1-0.3%, Sc 0.15-0.25%, Zr 0.1-0.15%, Ag 0.05-0.15%, impurities ≤0.1%, balance Al; density ≤2.63 g / cm³, tensile strength ≥470 MPa, elongation ≥23%. The preparation method includes: high-purity raw material smelting and casting → two-stage homogenization → hot rolling → intermediate annealing → cold rolling → solution treatment → single-stage aging; wherein the total reduction during hot rolling is 80-85%, the total reduction during cold rolling is 20-35%, and the single-stage aging is 120-140℃ × 16-24 h. The alloy's microstructure is characterized by: an average size of dispersed Al₃Sc particles ≤100 nm, a deformed grain area fraction ≥70%, an average size of nano-β-Al₃Mg₂ and T-Mg₃₂(Al,Zn)₄₉ composite precipitates ≤20 nm with a number density ≥1×10²³ m⁻³, and a micron-scale second phase area fraction ≤0.5% formed solely by Fe impurities. This invention simplifies the traditional two-stage aging process while still achieving simultaneous improvements in low density, high strength, and high plasticity, making it suitable for large-scale industrial applications.

The application provides a design method and structure of a car body inner partition wall, which comprises the following steps: obtaining design targets, assembly parameters, material parameters and original inner partition wall structure data of the car body inner partition wall; the assembly parameters comprise parameters suitable for the installation of a car door guide rail and the overall assembly requirements of a bathroom; the design target is to avoid the diamond modal frequency of the car body from the frame snake frequency; the material parameter is a steel material; part of a car body finite element model is intercepted from the original inner partition wall structure data; based on the part of the car body finite element model, the design target and the assembly parameter, local topological optimization boundary conditions and multiple groups of design structures are constructed; based on the local topological optimization boundary conditions, the multiple groups of design structures are iteratively solved and optimized to obtain a final topological optimization structure; and the final topological optimization structure is geometrically reconstructed to obtain a target inner partition wall structure meeting the material parameter. The application strengthens the diamond resistance of the car body, releases the effective space of the passenger room and improves the passenger riding experience.

This utility model relates to the field of wall panel technology, specifically disclosing a fire-retardant wall panel for rail vehicles, comprising: an installation structure and a panel, and an installation beam mounted on the surface of the installation structure. The surface of the installation beam is provided with a slot, and a connector is also connected to one side of the installation beam. A spring is provided on the surface of the connector, and the spring is connected to the surface of the slot. A cover plate is also connected to the surface of the spring, and a connection opening is provided on the surface of the cover plate. This utility model enables convenient installation of the panel through the connection between the spring and the slot. Connection is achieved only by pushing the panel. When the panel needs to be removed, the cover plate can be pulled to compress the spring, causing the panel to lose its positioning structure, thus enabling rapid removal of the panel and achieving efficient assembly and disassembly.

The invention relates to a floor for a tread of a passageway, the tread having a base of a first material and a number of skeletons of a second material, wherein the skeletons are encased by the first material, wherein the second material has a higher modulus of elasticity than the first material and / or at least one of the skeletons has a higher hardness than the hardness of the base.

A railway vehicle and a device therefor for preventing accumulation of snow on a bogie. The device for preventing accumulation of snow on a bogie comprises at least one flow guide air duct (1), and the flow direction of an airflow in each flow guide air duct is opposite to a running direction of a vehicle body; each flow guide air duct comprises a first air duct (11) and at least one second air duct (12), each second air duct being in cross-communication with one end of the first air duct; the first air duct is configured to guide the airflow to flow through a bogie along an upper surface of the bogie (2), the first air duct is provided with at least one air ejection port (111), and each air ejection port is configured to eject air to the bogie from top to bottom to melt ice and snow accumulated on the bogie; and each second air duct is configured to guide the airflow to flow from an end portion of the bogie to the bottom of the bogie so as to avoid accumulated snow from flowing into the bogie. The device for preventing accumulation of snow on a bogie not only can avoid the airflow from flowing into the bogie in heavy-snow weather and melt ice and snow accumulated on the bogie at the same time, but can also cool the bogie in high-temperature weather, thereby reducing adverse factors that threaten safe running of a railway vehicle, and improving the driving safety of the railway vehicle.

This invention provides a floor vibration damping structure and a rail vehicle. Multiple through holes are spaced apart along the floor's extension direction in the vibration damping body. Each through hole has a first inner wall and a second inner wall arranged opposite to each other along the expansion and contraction direction of the vibration damping body. The first and second inner walls have a separated state and an abutting state. In the separated state, the vibration damping body provides a first elastic force to the floor. When the vibration damping body is subjected to increased pressure, the first and second inner walls are in the abutting state, and the vibration damping body provides a second elastic force to the floor. By designing the vibration damping body with holes, a high-stiffness elastic body with low stiffness design is achieved, which is beneficial for reducing in-vehicle noise. It also achieves a variable stiffness design; that is, when the hole is compressed, it provides low-stiffness vibration damping support. When subjected to a large external load or passenger jumping impact load, the first and second inner walls are in the abutting state, the hole closes, and high-stiffness support is achieved, preventing excessive floor subsidence that could lead to floor damage. This improves vibration damping efficiency while satisfying lateral support stability.

The application discloses a hybrid locomotive, and aims at solving the problems of large air resistance and high fan energy consumption during high-speed driving. The technical scheme comprises the following steps: a first air inlet of a first air inlet channel is arranged at a locomotive head, natural air is introduced by using the air pressure difference during high-speed driving, and the internal combustion engine and the generator in a power box are cooled and combustion air is provided; a streamlined top cover is arranged at the locomotive head, and the air inlet is arranged below the top cover to enhance the air flow compression effect; a control cover plate and a pressure relief air duct are arranged on the side wall of the first air inlet channel to reduce the resistance when not working; an exhaust fan is arranged on an exhaust channel to adjust the air pressure of the power box; air is filtered into the internal combustion engine after heat exchange through a heat exchanger, and the utilization rate is improved; and air is introduced through a second air inlet channel and a fan at low speed. The application can reduce air resistance and fan energy consumption, improve the endurance, and is suitable for high-speed passenger hybrid locomotives.

The application discloses an impact-resistant carbon fiber composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The impact-resistant carbon fiber composite material is prepared by using aramid woven fabric to reinforce SCF / UHMWPE prepreg, and the method comprises the following steps: preparing a suspension system, placing chopped carbon fibers in the suspension system, putting UHMWPE fibers into the suspension system uniformly mixed with the chopped carbon fibers, collecting the mixed fibers, preparing carbon fiber felt material, and performing mold pressing to obtain SCF / UHMWPE prepreg; and based on the SCF / UHMWPE prepreg, the impact-resistant carbon fiber composite material is prepared by performing mold pressing. The method can shorten the preparation process, reduce the cost, and prepare a material with a gradient structure and excellent impact resistance.

The invention discloses a floor cloth protection structure and method for a vehicle and a railway vehicle, and relates to the technical field of vehicle interior protection. The floor cloth protection structure for the vehicle comprises a plurality of protection modules, each protection module is used for being independently arranged above floor cloth, and each protection module is detachably fixed to the upper surface of the floor cloth. The floor cloth protection structure for the vehicle is applied to protection of the floor cloth of the vehicle, the service life of the floor cloth can be prolonged, due to the fact that the protection structure is arranged in a modularized mode, the protection modules are detachably connected to the top face of the floor cloth, the protection structure is convenient to mount and dismount and can be repeatedly used, and each protection module can be replaced after being damaged; the protection effect and the maintenance convenience can be considered.

The invention relates to a connection apparatus developed to connect the first component made of plastic material with the second component, to ensure that the connecting element remains in the correct position on the part until it is assembled to the vehicle and to prevent thermal expansion that causes loosening of the parts.

To provide a railway vehicle in which the space in which a transition box is housed can be easily expanded without changing the positional relationship between the transition box and underfloor equipment and a bogie arranged around the transition box, and which can easily maintain airtightness inside a vehicle compartment.SOLUTION: Provided is a railway vehicle 10 with a transition box 5 provided near the end of an underframe 6 in the direction of the rails, in which the transition box includes a terminal block 4 connecting vehicle wiring 2 laid inside the vehicle to a jumper extension wire 32 extended from an inter-vehicle connector 31 to which a jumper wire 3 that connects between vehicles is detachably connected. The underframe includes a face plate 61 on the inside of the vehicle, a face plate 62 on the outside of the vehicle, and a connecting plate 63 connecting the two face plates, and is formed of a double-skin profile DSK extruded and molded in the direction of the rails. The transition box is formed by partially cutting out one of the two face plates and the connecting plate, and has a housing space 5S for housing the terminal block.SELECTED DRAWING: Figure 3

A light mass transit vehicle sidewall assembly and associated long girders are provided that are lightweight, strong, safe, and easily adaptable to include panels in the assembly, and that are lighter than typical long girders while maintaining adequate stiffness and strength required to support the roof and associated components attached to the roof and securely connect to the light mass transit vehicle sidewall assembly.

The application provides a room temperature curing two-component epoxy pouring sealant based on modified dimer acid epoxy and application thereof, which comprises components A and B; the raw materials for preparing the component A comprise 23-27% of a compound with the structure of formula I, 23-27% of glycidyl ether, 47.5-48.3% of hollow glass microbeads, 0.08-0.12% of a rheological additive and 1.8-2.3% of a flame retardant; the raw materials for preparing the component B comprise 33-37% of epoxy soybean oil modified dimer acid, 42-48% of dimer acid modified polyamide and 18-23% of a toughening agent. The pouring sealant has excellent open time, high board-core glass strength, flat tensile strength, flat compression strength, good sound insulation performance, excellent point load and static load experiment performance and high board-core shear force by using the compound with the structure of formula I, the epoxy soybean oil modified dimer acid with the structure of formula II and the dimer acid modified polyamide with the structure of formula III.

This invention relates to the field of hot extrusion manufacturing technology, specifically to a high-strength weldable 6xxx series aluminum alloy profile, its manufacturing method, and its application. The aluminum alloy profile is composed of the following weight percentages: Si: 0.80%~1.2%, Fe≤0.20%, Cu: 0.40%~0.80%, Mn: 0.30%~0.70%, Mg: 0.70%~1.1%, Cr≤0.25%, Zn≤0.10%, Ti≤0.10%, Zr: 0.05%-0.20%, Pb<0.01%, with the balance being Al and unavoidable impurities. The profile meets the following performance requirements: tensile properties, R... m ≥420MPa, R p0.2 ≥330MPa, A 50mm ≥8.0%; Fatigue performance: at r=0.1, N=1×10 7 Under the same conditions, the fatigue strength σ of the smooth sample is ≥145MPa, realizing the lightweight manufacturing of high-speed trains.

This application provides an acrylic pressure-sensitive adhesive composition for railway vehicle flooring, comprising an acrylic copolymer, a tackifying resin, a crosslinking agent, an antioxidant, and a UV absorber. This application also provides a double-sided adhesive film and a railway vehicle flooring. This application uses an acrylic copolymer obtained by copolymerizing butyl acrylate, isooctyl acrylate, and acrylic acid in a mass ratio of 40-60:40-60:1-5 as the main component of the pressure-sensitive adhesive composition. This composition not only exhibits high adhesive strength but also good weather resistance, including good resistance to thermal oxidation and UV radiation. Experimental results show that the double-sided adhesive film provided in this application has excellent adhesion, weather resistance, and ease of application. It has a peel strength ≥40 at 180°C, a peel strength retention rate ≥95% after heat aging, and only slight yellowing after UV aging.

The application discloses a cylindrical curved surface composite plate based on a zero Poisson's ratio honeycomb core and a preparation method thereof. The composite plate comprises an upper curved surface plate, a lower curved surface plate and an intermediate sandwich honeycomb core. The honeycomb core is formed by parallel arrangement and mutual splicing of multiple corrugated plates with the same cross section profile in the same direction. The cross section of the corrugated plate is composed of periodically repeated 'concave-convex' units, and the concave angle alpha and the convex angle beta of the unit satisfy alpha+beta=180°. Two corrugated plates are spliced in a mirror-symmetrical manner, so that the concave parts are mutually attached to form a half-concave hexagonal honeycomb grid array, and the zero Poisson's ratio characteristic is exhibited. The honeycomb core solves the problem that the traditional honeycomb core must be processed twice when forming a curved surface, can realize high-precision one-time attachment with a single-curvature curved surface, and completes the formation of a cylinder with an arbitrary curvature radius. Meanwhile, the honeycomb core has the advantages of light weight, high strength, batch manufacturing and low cost, and is suitable for fields of aerospace, rail transportation and building.