23results about "Wheel-axle combinations" patented technology

Provided is a railway axle in which a non-fitting portion can have a sufficient fatigue limit and the fatigue limit of a fitting portion can be increased. A railway axle (1) according to the present disclosure includes fitting portions (2) with a diameter DW mm and a non-fitting portion (3). The non-fitting portion (3) includes a parallel portion (31) having a diameter DA mm that is smaller than the diameter DW mm, and a fillet R portion (32). DW / DA is 1.10 to 1.30, and a radius of curvature Rf is greater than or equal to a critical radius of curvature Rcr mm defined by Formula (1) and smaller than or equal to 60.0 mm, where Rf is a radius of curvature of a portion of a surface of the fillet R portion (32), the portion being adjacent to a surface of the parallel portion (31), and a reference total case depth CAT mm is a smaller depth out of total case depths at a 0.23Rf position and a 0.57Rf position in an axial direction of the railway axle (1) from an R end (2E) of the fillet R portion (32) toward the parallel portion (31) side, the R end being an end that is in contact with the parallel portion (31). [Expression 1] Rcr=0.0822DA⋅exp8.38CATDA

The application discloses a light-weight wheel set structure, a locomotive driving assembly and a locomotive, and relates to the technical field of rail transit. The light-weight wheel set structure comprises a shaft tube, two mounting seats and two wheels. The shaft tube is a hollow structure. The two mounting seats are arranged at two ends of the shaft tube and are detachably mounted on the shaft tube through at least one connecting piece. The two wheels are detachably connected with the corresponding mounting seats. The mounting seat, the shaft tube and the wheels jointly enclose a sealed cavity, and high-pressure gas with a preset pressure is introduced into the sealed cavity, so that the mass of the wheel set is further reduced. Each component can be individually disassembled, replaced or maintained, thereby greatly improving the maintenance efficiency and reducing the life cycle cost.

This utility model relates to the field of vehicle wheel hub bearings and discloses a lightweight wheel hub bearing unit assembly, including an outer ring sleeve (1) and an inner ring shaft (2). The lower end of the shaft (2) is integrally formed with a flange (3). Rollers are arranged between the outer ring of the shaft (2) and the inner ring of the sleeve (1) to form a bearing structure. A cover (4) is provided at the upper end of the sleeve (1), and the sleeve (1) extends to the root (5) of the shaft (2). The rollers include two sets, one set at the upper end of the shaft (2) and the other set at the root (5) of the shaft (2). The flange (3) has multiple fixing wings (6), and fixing holes (7) are provided on the fixing wings (6). The fixing wings (6) are distributed circumferentially along the shaft (2), and a weight reduction opening (8) is formed between the fixing wings (6). This bearing unit assembly has the advantages of reliable sealing, high load-bearing capacity, and long service life.

The present application relates to the technical field of mine flat car, especially to a wheel pair of mine flat car. The wheel pair of mine flat car comprises a mine wheel with a hollow structure, characterized in that it further comprises a runaway prevention device; the runaway prevention device comprises a mounting frame and a brake assembly, the mounting frame is coaxially installed in the mine wheel; the brake assembly comprises a brake block and an elastic member, one end of the brake block is hinged to the mounting frame, and the hinged axis is parallel to the axis of the mine wheel, the other end of the brake block is elastically connected to the mounting frame through the elastic member, and the elastic member is arranged along the radial direction of the mine wheel. By setting the brake block and the elastic member, when the flat car runs at a high speed or runs away, the centrifugal force is greater than the elastic force of the elastic member, so that the brake block is in close friction with the inner wall of the mine wheel under the action of the centrifugal force, thereby realizing the rapid deceleration of the brake block on the mine wheel.

A rail vehicle, such as a light rail vehicle, can include a wheel unit and a support unit. The wheel unit can define an axis of rotation of the wheel unit. The support unit can be configured to be connected to a rail vehicle structure that defines a vehicle longitudinal direction, a vehicle transverse direction, and a vehicle height direction. The support unit can be configured to connect the wheel unit to the rail vehicle structure such that the wheel unit is rotatable about the axis of rotation. The support unit can also include a primary suspension unit configured to provide resilient support of the rail vehicle structure on the wheel unit at least in the vehicle height direction.

The utility model belongs to wheel pair technical field especially relates to a steering wheel pair with lubricating function, including mounting bracket and wheel, wheel is installed in mounting bracket left and right sides, is provided with the direction changing device in mounting bracket, and the direction changing device includes direction changing motor, gear, rack, rotation axis and mounting bracket. This steering wheel pair with lubricating function, through direction changing motor drive gear rotation, thereby drive rack removal, finally make mounting bracket and wheel change direction, through screw rod motor drive screw rod rotation certain number of turns, make the push board advance specified distance, will certain amount of lubricating oil through the connecting pipe press into the oil inlet, finally from the wheel axle surface lubrication hole flows out to the wheel axle and the wheel inner surface lubrication, improve the service life, through infrared speedometer detection unit time in the mark groove pass frequency to judge the wheel rotating speed, reach certain rotating speed through signal line to screw rod motor send signal and make it work to the wheel axle lubrication, reduce lubricating oil unnecessary loss.

The utility model relates to robot technical field especially relates to a wheeled robot chassis. The chassis includes the frame, front wheel assembly, rear wheel assembly, electric cabinet and battery, and front wheel assembly and rear wheel assembly set up at the front end and rear end of frame respectively, and electric cabinet and battery are installed on the frame, still include front shock absorber and rear shock absorber, front wheel assembly includes the front beam and sets up the front wheel at the both ends of front beam, and the front beam is connected through front shock absorber between the frame, and front shock absorber sets up in the center of front beam length direction, rear wheel assembly includes the rear beam rod and sets up the rear wheel at the both ends of rear beam rod, and the both ends of rear beam rod are provided with rear shock absorber, and the upper end of rear shock absorber is connected with the frame, and the lower end of rear shock absorber is connected with rear beam rod. The utility model effectively solved the technical problem that the wheel of wheeled direct connection chassis and robot body have no buffer, and the road surface impact is directly transmitted to the electrical components, resulting in the service life reduction of electrical components.

The invention relates to a chassis for rail vehicles, comprising a chassis frame (1), at least one drive motor (2), at least one transmission (4), and at least one first gear set (5) which is rotatably coupled to the chassis frame (1). The at least one drive motor (2) is connected to the chassis frame (1), and in order to transmit a torque from the at least one drive motor (2) to the at least one first gear set (5) via the at least one transmission (4), the at least one drive motor (2) is coupled to the at least one transmission (4) and the at least one transmission (4) is coupled to the at least one first gear set (5). According to the invention, at least one brake disc (24) is connected to a transmission shaft (20), wherein at least one brake actuator (27) which can be brought into contact with the at least one brake disc (24) is connected to a transmission housing (17), thus reducing unsprung masses of the chassis.

The utility model discloses an axle oil baffle device, which solves the problems that the oil baffle device in the prior art increases the weight of the axle and has poor heat dissipation effect. The utility model comprises a wheel hub and a shaft body. A first bearing and a second bearing are arranged axially between the shaft body and the wheel hub. A cavity is left between the shaft body and the wheel hub and between the first bearing and the second bearing. Oil baffle rings are arranged on one side of the first bearing facing the cavity and on one side of the second bearing facing the cavity; The oil baffle ring comprises a disc body, and the inner circular edge and the outer circular edge of the disc body are turned over in the same direction to form concentric inner retaining rings and outer retaining rings, and both the inner retaining ring and the outer retaining ring are perpendicular to the disc body. By arranging corresponding oil baffle rings between the inner and outer rings of the axle bearing, the utility model can effectively block the lubricating grease from entering the cavity between the shaft body and the wheel hub, enable the lubricating grease to be retained in the bearing for a long time, and reduce the loss of the lubricating grease. The reinforcing ribs drive the surrounding air to flow, thereby taking away the heat generated by the wheel hub and the bearing, which is beneficial to reducing the temperature and improving the heat dissipation efficiency.

The utility model provides a high torque antiskid drive wheel for engineering machinery relates to high torque antiskid drive wheel technical field, the utility model discloses a support is fixedly connected with torque motor on the side, the side of support is provided with drive wheel, the side of support is provided with convenient dismounting device, convenient dismounting device includes setting the sleeve rod of support side, the inside of sleeve rod is inserted with bearing, the surface of bearing is equipped with drive wheel, the surface of bearing is equipped with through groove, the surface of sleeve rod is equipped with through groove, the inside of through groove is inserted with bolt, the surface screw thread connection of bolt has the nut, the surface screw thread connection of nut has screw, and one end of screw abuts at the surface of bolt, the surface fixedly connected with rectangle strip of bearing, the utility model solves the drive wheel usually is fixed in the output end surface of engine, and further leads to the problem that the drive wheel of wear and tear is inconvenient to replace.

The utility model discloses a tractor front axle assembly which comprises a main reduction gearbox body, a left wheel hub fixing seat and a right wheel hub fixing seat, the left wheel hub fixing seat and the right wheel hub fixing seat are arranged at the two ends of the main reduction gearbox body, and driving cavities are formed in the left wheel hub fixing seat and the right wheel hub fixing seat. A main shaft seat is assembled at the front end of the main reduction gearbox body, a bearing seat is assembled in the main shaft seat, and the bearing seat comprises a shaft barrel a and a shaft barrel b which are oppositely arranged; rotating cavities are evenly formed in the inner walls of the shaft barrel a and the shaft barrel b at equal intervals along the axes of the shaft barrel a and the shaft barrel b, and balls are installed in the rotating cavities. According to the front axle assembly of the tractor, driving cavities are formed in a left hub fixing base and a right hub fixing base, meanwhile, tail end large gears are installed at the ends of a left half shaft sleeve and a right half shaft sleeve which are connected to the two sides of a main reduction gearbox body, and the tail end large gears are assembled in the driving cavities.

The present disclosure is an eccentric jounce travelling mechanism for a children's toy vehicle and a travelling method. The mechanism includes a vehicle frame, and a front wheel component and a rear wheel component arranged at a bottom of the vehicle frame for supporting the vehicle frame, and an eccentric adjustment mechanism is arranged at an interior of the front wheel component. By arranging the eccentric adjustment mechanism, the position of a positioning shaft can be controlled, and whether the front wheel component is eccentrically mounted or not can be controlled by the relative position between flat grooves on the positioning shaft and limit blocks, to cause the children's toy vehicle to smoothly travel and jounce upwards and downwards, increasing the interestingness of the children's toy vehicle.

The present invention provides a wheel mounting structure that prevents the wheel from falling off the axle even if the inner and outer bearings are damaged. [Solution] The wheel mounting structure comprises an axle, a hub, two bearings consisting of an inner bearing and an outer bearing disposed between the axle and the hub, a spacer disposed between the two bearings, and a nut or both a nut and a washer that tightens the two bearings from the tip to the base of the axle. The hub has an inner projection that protrudes inward. The two bearings are arranged in parallel with a gap between them along the axis of the axle. The inner projection is positioned within the gap to sandwich the spacer between it and the axle. The outer diameter of at least one of the nut and the washer is larger than the inner diameter of the inner projection.

The straddle-type monorail vehicle running wheel mechanism provided by the application is characterized in that the first brake shaft and the second brake shaft are coaxial and rotationally connected, so that the first running wheel and the second running wheel can rotate independently, when the rail vehicle runs on a curve section, the first running wheel or the second running wheel on the outside only rotates and does not slide, effectively reducing the wear of the first running wheel and the second running wheel on the outside, improving the braking efficiency, and when braking is required, the braking assembly simultaneously applies braking force to the first brake shaft and the second brake shaft to brake the first running wheel and the second running wheel synchronously.

The utility model provides a kind of straddle type monorail guide wheel axle system assembly, guide wheel and vehicle, it is related to rail transit vehicle technical field, including wheel axle, bearing assembly and anti-loose component, bearing assembly includes bearing seat, first bearing, second bearing and spacer sleeve, two ends of spacer sleeve are respectively abutted on the two ends of first bearing and second bearing close to each other;The axial relative position between first bearing and the inner ring of second bearing can be accurately separated by spacer sleeve, a rigid "first bearing-spacer sleeve-second bearing" module is formed, the axial dimension of this module is determined by the length of spacer sleeve, and is not disturbed by part manufacturing error and temperature difference deformation.And using the fixed limit of shaft shoulder and the adjustable compression of anti-loose component, stable axial pre-tightening force is applied to the module from both sides, the rigidity of bearing assembly whole is enhanced.Fundamentally guarantee bearing play constant, improve the carrying capacity of axle system assembly, impact resistance and safe service life.

The utility model belongs to children's articles technical field discloses a wheel assembly and children's articles. Wheel assembly includes wheel body, locking assembly and axle body. Axle body and wheel body are detachably connected and fixed, the outer wall of axle body is provided with the locking slot of extension setting along the circumferential direction of axle body, locking assembly includes the locking piece of activity setting on wheel body, locking piece is in locking position and unlocking position, when in locking position, locking piece is positioned to locking slot to limit wheel body and axle body along the axial direction of axle body and separate, when in unlocking position, locking piece separates locking slot. The wheel assembly provided by the utility model is used, and axle body is installed on the main body structure of children's articles, and wheel body can be conveniently detached from axle body, so that the occupied space of children's articles in transportation is saved.

A removable wheel assembly for use in combination with an axle having an annular groove includes a wheel with a hub assembly. The hub assembly includes a housing with an axle bore configured to receive the axle, and an axle locking device received within the housing adjacent the axle bore. The axle locking device includes a retaining portion configured to secure the axle locking device within the housing, a release portion, wherein at least a portion of the release portion is located outside the housing, and an axle locking portion extending between the retaining portion and the release portion, and configured to operatively interact with the annular groove on the axle when in a first position. The release portion is configured to be displaced away from the axle bore to displace the axle locking portion outwardly from the annular groove when in a second position.

To provide a hub for human power driving vehicles including a braking force adjustment mechanism making it possible to diminish the number of components.SOLUTION: A hub for human power driving vehicles includes a hub shell including a hub shaft, a first flange rotatively attached to the hub shaft, and a second flange separated from the first flange in an axial direction of the hub shaft, a first arrangement surface included in the hub shaft or hub shell and provided with a magnet or a magnet attachment part, a braking force adjustment mechanism at least part of which is included in the hub shell so that the braking force adjustment mechanism can adjust a braking force exerted by a braking device, a first area including the first flange and first arrangement surface, and a second area including the second flange and braking force adjustment mechanism. The hub shell includes a first part included by the first area, and a second part included by the second area. The first part is integrated into the second part.SELECTED DRAWING: Figure 2