407results about "Axle-box lubrication" patented technology

The invention discloses an Al-Mg-Zn aluminum alloy plate with excellent strong plasticity and light weight characteristics as well as a preparation method and application of the Al-Mg-Zn aluminum alloy plate. The alloy comprises the following components in percentage by mass: 5.0%-5.5% of Mg, 1.5%-2.0% of Zn, 0.4%-0.5% of Mn, 0.1%-0.3% of Cu, 0.15%-0.25% of Sc, 0.1%-0.15% of Zr, 0.05%-0.15% of Ag, less than or equal to 0.1% of impurities and the balance of Al. The density is not more than 2.63 g / cm < 3 >, the tensile strength is not less than 470 MPa, and the ductility is not less than 23%. The preparation method comprises the steps of high-purity raw material smelting and casting, two-stage homogenization, hot rolling, intermediate annealing, cold rolling, solid solution treatment and single-stage aging. Wherein the total pressing amount of hot rolling is 80-85%, the total pressing amount of cold rolling is 20-35%, and the single-stage aging time is 120-140 DEG C * 16-24 h. The microstructure of the alloy is characterized in that the average size of dispersed AlSc particles is smaller than or equal to 100 nm, the area fraction of deformed grains is larger than or equal to 70%, the average size of nanometer beta-AlMg and T-Mg (Al, Zn) composite precipitated phases is smaller than or equal to 20 nm, the number density is larger than or equal to 1 * 10 < m >, the area fraction of micron-order second phases is smaller than or equal to 0.5%, and the alloy is only formed by impurity Fe. According to the method, the traditional two-stage aging process is simplified, low density, high strength and high plasticity are synchronously improved, and the method is suitable for large-scale industrial application.

The invention discloses a roof sandwich plate and embedded part composite connecting structure for a rail transit vehicle and a process of the roof sandwich plate and embedded part composite connecting structure, and relates to the technical field of mechanical connecting structures. The multi-layer composite board is composed of an upper panel, a lower panel and a light core material, the pre-buried metal section bar is installed on the edge of the board through a glue joint layer, the framework edge beam is arranged on the board in a sleeved mode through a clamping groove and is in glue joint with the upper panel and the lower panel, and the framework edge beam, the upper panel and the lower panel are mechanically connected and fixed through the mechanical locking unit. By means of the composite connection structure of glue joint and mechanical locking, the connection strength of the roof sandwich plate and the embedded part is guaranteed, the reliability and durability of connection are improved, and the comprehensive requirements of rail transit vehicles for high reliability, high durability and light weight of the roof structure are met.

The utility model discloses a fixed apron board, a vehicle equipment compartment and a railway vehicle, and relates to the technical field of railway vehicles, and the fixed apron board comprises an apron board main body and a plugging structure. Wherein the apron board main body is of a structure integrally formed by a composite material, the apron board main body comprises a cavity structure, and a first sealing plate structure used for being connected with a vehicle body edge beam and a second sealing plate structure used for being connected with a framework edge beam are arranged at the two ends of the cavity structure in the longitudinal direction correspondingly; the blocking structures are arranged at the two ends of the cavity structure in the transverse direction, and the blocking structures are configured to seal an inner cavity of the cavity structure together with the first sealing plate structure and the second sealing plate structure. The fixed apron board solves the problem that an existing aluminum alloy apron board cannot meet the requirements for light weight and performance at the same time.

The application discloses a bogie covering device and a railway vehicle, and relates to the technical field of railway vehicles.The bogie covering device comprises a bottom plate arranged below a bogie and between two wheels arranged adjacent to each other along the width direction of the vehicle; two side plates arranged on the two sides of the bottom plate along the width direction of the bogie, and the side plates are provided with avoiding holes for the wheels to extend out; and the side plates are connected to a vehicle body and are in contact with or connected to the bottom plate.In the process of using the bogie covering device provided by the specific embodiment, when the vehicle is running, the bottom plate and the two side plates cover all parts of the bogie except the wheels, so that the airflow can be prevented from entering the interior of the bogie to generate resistance, the resistance generated by the bogie part during the running of the vehicle is effectively reduced, and the energy consumption is reduced.

To provide an outer hood for a railway vehicle which has a simple structure, is rich in flexibility and rigidity, and can be used for a long period of time.SOLUTION: A connection part 103 between a front side vehicle body 101 and a rear side vehicle body 102 of a railway vehicle 100 is continuously covered from the outside from a roof to right and left side surfaces, and a plurality of hood bodies 111 are arranged in the outer peripheral direction surrounding the vehicle 100. The front side and the rear side of the awning body 111 are the outer awning 110 for the railway vehicle fixed to the front side vehicle body 101 and the rear side vehicle body 102, respectively, and the awning body 111 is a housing made of a rubber-like elastic body, opened on the back surface side, and including a front surface 112, a front surface 113, a rear surface 114, a first surface 115, and a second surface 116, and is formed by integrally molding a plurality of corrugated middle ribs 131,132 vertically protruding from the front surface 112 to the vehicle interior side between the first surface 115 and the second surface 116.SELECTED DRAWING: Figure 19

To provide a thin structural member which contributes to the improvement of assemblability of a vehicle body, is light-weight and has high rigidity, and a railroad vehicle that forms a floor surface with an underframe structure with such a structural member.SOLUTION: A body bolster of a railroad vehicle includes: a plurality of radial ribs arranged radially from the center of a vertical load input unit and having a shape of a protrusion on the surface of a flat plate arranged horizontally with a curvature provided in the longitudinal or width direction of a vehicle more gently as it moves away from the center of the vertical load input unit; and a circular rib arranged intermittently around a vertical load input seating surface so as to overlap the plurality of radial ribs.SELECTED DRAWING: Figure 4

The invention relates to the technical field of railway vehicles, and provides a sound absorption device and a railway vehicle. In the sound absorption device, a surrounding plate structure and a flexible film in sealed connection form a closed cavity, at least one through hole is formed in the flexible film, hollow pipes and the through holes are arranged in a one-to-one correspondence mode, one ends of the hollow pipes are inserted into the corresponding through holes, and the other ends of the hollow pipes penetrate through a sound absorption structure and extend to an interval space between the sound absorption structure and a cavity bottom. And a coupling resonance sound absorption system of the flexible film, the hollow pipe, the interval space and the closed cavity is formed. According to the sound absorption device, the sound resistance and the sound quality are improved through the hollow pipe, the resonance frequency is made to move to the low frequency in cooperation with dual coupling resonance of the flexible film and the hollow pipe and dual coupling resonance of the hollow pipe and the cavity, and low-and-medium-frequency noise of 100-500 Hz is efficiently absorbed; the two types of coupling resonance cooperate to broaden the sound absorption frequency band, and the sound absorption structure is attached to the flexible film to enhance the sound energy dissipation efficiency. Efficient low-frequency sound absorption can be achieved without increasing the size, the requirements for light weight and thinness of railway vehicles are met, and the noise control effect is improved.

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 provides a door post cover and a preparation method thereof. The door post cover comprises a door post cover plate body, a handrail mounting area is arranged on the door post cover plate body, a transition area one is arranged between the lower part of the handrail mounting area and the door post cover plate body, the door post cover plate body comprises a cover plate common area one and a cover plate common area two, the handrail mounting area comprises a transition area two, a handrail common area and a transition area three, the transition area three extends to the cover plate common area one and the cover plate common area two respectively, the innermost side and the outermost side of the cover plate common area one, the cover plate common area two, the handrail common area, the transition area one, the transition area two and the transition area three are respectively an inner glass fiber layer and an outer glass fiber layer, and a carbon fiber layer is arranged between the inner glass fiber layer and the outer glass fiber layer. The preparation method is realized by die forming or hot press tank forming. The application solves the problems of large density, easy deformation and complex process of the current door post cover, and has the advantages of low cost, high efficiency and batch production.

The utility model discloses a universal rotating shaft mechanism for a subway train, which belongs to the technical field of subway train through passage connecting pieces and comprises a winding drum, a protective plate, a central shaft, a spring, an upper mounting seat and a lower mounting seat, and the central shaft is connected with the protective plate through an upper clamping block and a lower clamping block respectively; the central shaft is respectively connected with the upper mounting seat and the lower mounting seat, and the upper mounting seat and the lower mounting seat are connected with the winding drum through screws; an upper mounting seat is arranged above the upper clamping block, a middle mounting seat is arranged above the lower clamping block, the spring is located between the upper mounting seat and the middle mounting seat, conical barrels are arranged at the bottom of the upper mounting seat and the top of the middle mounting seat, and the conical barrels are sleeved with the two ends of the spring. According to the utility model, the fixing effect on the central shaft can be improved; and meanwhile, the spring is fixed through the two groups of conical barrels which are opposite up and down.

The invention discloses a driven rail car, and relates to the technical field of transfer rail cars, the driven rail car comprises a mounting plate and a plurality of pulley components, a fixed bearing plate is arranged on the upper surface of the mounting plate, two protective fences are symmetrically arranged on the two sides of the mounting plate, and two lead screw mounting seats are symmetrically arranged at the two ends of the lower surface of the mounting plate; movable bearing plates are arranged on the upper surfaces of the two protective fences correspondingly, roller sliding block components are arranged on the sides, close to the mounting plates, of the protective fences correspondingly, jacking lead screw components are arranged at the tops of the sides, close to each other, of the two lead screw mounting bases, and telescopic lead screw components are arranged at the bottoms of the sides, close to each other, of the lead screw mounting bases. By means of the structure, the two protective fences can stretch out through the telescopic lead screw component, then the two movable bearing plates stretch out, the two rolling wheel sliding block components stretch out through the jacking lead screw component, the two movable bearing plates are jacked up, the two movable bearing plates and the fixed bearing plate are located on the same horizontal plane, and a large structural part is better supported; and the stability during transferring is ensured.

The utility model belongs to the technical field of railway vehicles, and provides an opening and closing mechanism and a railway vehicle. The opening and closing mechanism comprises a flow guide cover, a base, a rotating arm mechanism and a walking rail. One end of the rotating arm mechanism is coupled with the base, and the other end is connected to the fairing; the walking rail is mounted on the base and comprises a rail groove; a rolling wheel is installed on the rotating arm mechanism and located in the track groove, and the peripheral wall of the rolling wheel makes contact with the side wall of the track groove. The rotating arm mechanism rotates around the base, and the rolling wheels roll in the track grooves so as to control the flow guide cover to do opening and closing movement according to the track limited by the walking track. And by adopting the roller and rail groove matched walking structure, the action reliability of the opening and closing mechanism can be improved. According to the structure, the controllability of the motion trail of the air guide sleeve of the opening and closing mechanism is improved, motion interference between the air guide sleeve and other vehicle body parts in the opening and closing process can be avoided, and then the motion reliability of the air guide sleeve is guaranteed.

FIXING FRAME FOR FURNITURE EQUIPMENT IN A PUBLIC TRANSPORT VEHICLE AND VEHICLE EQUIPPED WITH SUCH A FRAME The invention relates to a fixing frame for interior furniture equipment (30, 32) in a public transport vehicle comprising a passenger transport body mechanically connected to the running elements of said vehicle, said frame (100) comprising: a plurality of frame elements (10, 12, 14, 20); fixing means (10a, 10b, 10c, 10d; 12a, 12b, 12c; 14a, 14b, 14c; 20a) of each frame element (10, 12, 14) of said plurality of frame elements to said body of said transport vehicle; Mounting means (32a, 32b) for at least one piece of interior furniture (32) on at least one structural element of said plurality of structural elements. Figure for the abbreviation: Figure 1

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 utility model discloses a lower side beam assembly of a rail wagon and the rail wagon. The lower side beam assembly comprises a vertical part, a transverse part and a U-shaped part; the length directions of the vertical part, the transverse part and the U-shaped part are consistent with the length direction of the railway wagon; the vertical part is in a flat plate shape and is vertically arranged; the transverse part is in a flat plate shape and is horizontally arranged; one side of the transverse part is connected with one side of the vertical part through an arc-shaped structure, and the radian of the arc-shaped structure is larger than 85 degrees and smaller than 95 degrees. The plane of the upper surface of the transverse part is lower than the plane of the bottom surface of the vertical part; the U-shaped part is located below the transverse part, the transverse section of the U-shaped part is in a U shape, and an opening of the U shape faces the transverse part and is closed by the transverse part; the central face, perpendicular to the width direction, of the U-shaped part is perpendicular to the transverse part. The lower side beam assembly is favorable for reducing the self weight on the basis of stable structure, and is suitable for railway wagons for transporting large-size containers.

A railcar includes a frame configured to support a first container and a second container in an end-to-end configuration. The first bogie assembly is coupled to a first end of the frame such that movement of the frame is decoupled from the first bogie assembly, and the second bogie assembly is coupled to a second end of the frame such that movement of the frame is decoupled from the second bogie assembly. Thereby, twisting and bending of the railcar enables bending and twisting of the frame to maintain the first and second bogie assemblies in contact with the railway, especially when traveling along a bend or slope.

The invention discloses a passenger train side wall structure and a passenger train, the passenger train side wall structure comprises a side wall plate, a cross beam and a vertical beam side wall plate, the side wall plate is provided with a plurality of window body assemblies at intervals, and each window body assembly comprises at least two windows arranged up and down; the cross beams are horizontally arranged on the side, deviating from the interior of the vehicle body, of the side wall plate in the length direction of the side wall plate and arranged on at least one of the upper side and the lower side of each window; the vertical beams are vertically arranged on the sides, away from the interior of the vehicle body, of the side wallboards in the height direction of the side wallboards. The vertical beams are arranged on at least one of the left side and the right side of each window. Wherein one of the cross beam and the vertical beam is provided with a receding opening, and the other one of the cross beam and the vertical beam penetrates through the receding opening; the cross beams and the vertical beams are at least arranged on the peripheral side of the window so as to guarantee the structural strength of the window position, the avoiding openings in the cross beams or the longitudinal beams can enable the connecting positions of the cross beams and the longitudinal beams to form a #-shaped structure, and the connecting positions of the longitudinal beams and the cross beams form good fatigue resistance and safety performance.

The utility model belongs to the technical field of rail transit vehicles, and particularly discloses a subway flaw detection vehicle cab which comprises a vehicle framework and an outer skin, and the outer skin covers the outer side of the vehicle framework. The car framework comprises a front end steel structure, a right side wall steel structure, a car roof steel structure and a left side wall steel structure. The upper end of the front-end steel structure is connected with the roof steel structure, the right end of the front-end steel structure is connected with the right side wall steel structure, and the left end of the front-end steel structure is connected with the left side wall steel structure; the upper end of the right side wall steel structure is connected with the roof steel structure, and the upper end of the left side wall steel structure is connected with the roof steel structure; the cab is simple in structure, easy to produce and good in structural stability, the production cost is reduced, and the production efficiency is improved; the cab is manufactured in a split mode and a combined welding mode. When the specification of the cab needs to be modified, the purpose can be achieved only by modifying corresponding parts.

The invention relates to the technical field of railway vehicles, and provides a damping device and a railway vehicle. In the damping device, self-adaptive rigidity adjustment of a dynamic load is achieved through cooperation of a main spring assembly and an auxiliary spring, in a first-stage bearing range, a bearing connecting piece moves along with the main spring assembly and keeps a separated state from the auxiliary spring, and the main spring assembly elastically deforms independently to provide basic rigidity; in the second-stage bearing range, the bearing connecting piece further moves along with the increase of the load and abuts against the auxiliary spring, the auxiliary spring and the main spring assembly cooperatively deform to provide composite rigidity with higher supporting force, and therefore the damping requirements under different load working conditions are met. Through grading cooperation of the main spring assembly and the auxiliary spring, the low overall rigidity is kept in the low-load state, and vibration transmission is effectively reduced; higher composite rigidity is provided in a high-load state, excessive deformation of the floor is effectively restrained, automatic adaptation to different load working conditions is achieved, good balance is achieved between light load and heavy load, and safety and comfort are improved.

The utility model discloses a high-speed train anti-drag apron board mounting and positioning structure, which belongs to the technical field of high-speed trains and is characterized by comprising a train body, four mounting plates are bolted to the front side and the rear side of the bottom of the train body respectively, flow guide apron boards are arranged between the front sides of the four mounting plates on the front side and between the rear sides of the four mounting plates on the rear side respectively, and the flow guide apron boards are arranged on the bottom of the train body. Two quick clamping assemblies and two magnetic attraction positioning assemblies are arranged between the flow guide apron board and the mounting plate, each quick clamping assembly comprises a first mounting seat, the side, close to the mounting plate, of each first mounting seat is in bolted connection with the mounting plate, a first butt joint groove is formed in each first mounting seat, and a second butt joint groove is formed in each first butt joint groove; the problems that an existing installing and positioning structure for the anti-drag apron board has some defects that the installing precision is difficult to guarantee, the installing process is complex, the positioning stability is poor and the like, and the anti-drag effect and the service life of the anti-drag apron board are affected by the problems are solved.

The invention discloses a side wall module structure of an aluminum alloy railway vehicle door and a synthesis process, and belongs to the technical field of subway vehicle door production. The technical problems to be solved are as follows: for a welding base plate for avoiding a welding seam, an avoiding inner rib groove needs to be machined in advance in a side wall plate in a side wall module machining procedure, so that the assembly angle and the assembly gap between a side wall stand column and the side wall plate need to be controlled during assembly in a side wall synthesis procedure, the assembly difficulty is high, and the production efficiency is high. Meanwhile, the side wall stand column is affected by welding deformation during welding, the post-welding shrinkage amount of a post-welding side welding seam is larger than that of a pre-welding welding seam, and the flatness of a side wall module after welding is difficult to control. According to the technical scheme, the side wall module structure of the aluminum alloy railway vehicle door comprises a side wall stand column and a side wall plate, the side wall stand column and the upper side of the side wall plate are welded together through an insertion welding seam, and the side wall stand column and the lower side of the side wall plate are welded together through a lap welding seam.

Lifting device (1) for transporting persons between different floor levels in a vehicle comprising: • a lifting platform (2) which is vertically movable in the intended orientation of the lifting device (1), • at least one drive for the vertical movement of the lifting platform (2), comprising at least one motor (5), where • the lifting device (1) has at least one guide for the lifting platform (2) which is designed to guide the vertical movement of the lifting platform (2) and is arranged laterally to the lifting platform (2) in the intended orientation of the lifting device (1), • a space below the lifting platform (2) in the intended orientation of the lifting device (1) is free from the at least one motor (5) of the at least one drive for the vertical movement of the lifting platform (2), wherein the platform lift (2) has a first end face (3) and a second end face (4) opposite the first end face for access and / or exit, wherein the lifting device (1) is located in the area of ​​the first end face (3) of the platform lift (2) has a first, height-adjustable first staircase (10, 100) coupled to the vertical movement of the platform lift (2) and having at least one step (13), and wherein the platform lift device (1) has a second, height-adjustable second staircase (44, 100) coupled to the vertical movement of the platform lift (2) and having at least one step (13) in the area of ​​the second end face (4) of the platform lift (2), characterized in that at least the first staircase (10, 100) is designed as a folding staircase (10) with at least one step (13) and at least one beam (17) rotatably arranged on the platform lift (2) and supporting the at least one step (13), wherein the at least one step (13) is pivotably arranged on the at least one beam (17) and coupled to the platform lift (2) by means of at least one driver (12), so that its tread surface lies in a plane with the platform lift (2) in a folded position of the first folding staircase (10) and in an unfolded position of the first folding staircase (10) runs parallel to the platform lift (2) offset in height.

Provided is a track engineering mechanical vehicle heat preservation device, which comprises a heat preservation type vehicle body and a heat preservation type floor arranged at the lower end of the heat preservation type vehicle body, a window heat preservation structure is arranged at the window mounting opening and the window connecting position of the heat preservation type vehicle body, a door heat preservation structure is arranged at the door mounting opening and the door connecting position of the heat preservation type vehicle body, and a sealing heat preservation structure is arranged at the through hole for small part mounting on the heat preservation type vehicle body; a heat preservation type movable floor is arranged at the access opening of the heat preservation type floor, one end of the heat preservation type movable floor is hingedly connected to the corresponding position of the access opening, and the other end of the heat preservation type movable floor is detachably fixedly connected to the heat preservation type floor through a triangular lock. The heat preservation structure of the track engineering mechanical vehicle is optimized, the problem that the temperature difference between the inside and outside of the track engineering mechanical vehicle is large due to the large temperature difference between the north and south climates is solved, the energy consumption of the air conditioner refrigeration and the electric heater heating power is effectively reduced, the demand of the current different regional high-speed rail lines is met, the heat preservation performance and the safety and comfort of the whole vehicle are ensured, and the energy consumption is reduced.

The invention relates to a cornerpiece (3) of a convolute (2) of a bellows (1) of a gangway, the cornerpiece (3) extending from a first end (7) intended to be connected to a further part of the convolute (2) to a second end (8) intended to either be connected to a further part of the convolute (2) or to serve as an end of the convolute, wherein the cornerpiece (3) at least for a part of its extend from the first end (7) to the second end (8) has the shape of a trough that is bent into an arc, wherein the trough has a bottom line (9) or a bottom area (18), wherein the cornerpiece (3) has a first piece (10) that is a cut¬ away from sheet material and has a second piece (11) that is a cut¬ away from sheet material, wherein the first piece (10) is joined to the second piece (11) along a line of connection (12), wherein the line of connection crosses the bottom line or the bottom area.