38results about How to "Good load balance" patented technology

An aspheric surface measuring apparatus includes a sample holder mechanism and an interferential optical mechanism, and performs optical interferometric measurement while rotating a sample every time a measurement angle is varied. The sample holder mechanism has a first air spindle for rotating the sample about a test surface axis and a first airslide. The first airslide carries the sample orthogonally or parallel to the test surface axis. The interference optical mechanism has an interference optical system, a first imaging system, and a second imaging system, a second air spindle, and a second airslide. The second spindle revolves or turns the interference optical system and the first and second imaging systems integrally to change a measurement angle between the measurement optical axis and the test surface axis. The second airslide carries the second air spindle orthogonally to the moving direction of the first airslide.

The invention provides an electric vehicle transmission system. The electric vehicle transmission system comprises a motor and a speed reducer. The motor is provided with an output shaft. The speed reducer is provided with a box and comprises a planetary gear train and a differential mechanism, wherein the planetary gear train is driven by the output shaft and arranged coaxial with the output shaft, and the differential mechanism is driven through the output end of the planetary gear train to rotate. The central axis of the differential mechanism and the axis of the output shaft are arranged in parallel. The electric vehicle transmission system has the advantages that the planetary mechanism is adopted for the speed reducer input stage, so that vibration force arms are offset mutually, and better smoothness and stability are achieved in the process of high-speed running; the output stage of the speed reducer and the differential mechanism are integrated together, the simple in structure, occupied space is small, the overall structure of the speed reducer is compact, the weight is lighter, and the overall running is smooth and stable.

The invention discloses a main speed reducer of a fan of a novel GTF aircraft engine. The main speed reducer of the fan of the novel GTF aircraft engine is characterized in that sun gears and star gears use integrated double helical teeth, an inner tooth ring A and an inner tooth ring B are helical internal gears connected with a gear coupling through helical external splines, the gear coupling is connected with an output shaft through a straight-tooth internal spline, the speed reducer does not have an independent planetary rack, all the star gears are fixed on a left box body cover through star gear shafts, each star gear only revolves on its axis, the space position of each star gear is not changed in running, a bush of each star gear shaft uses a special structure that the diameter of the central hole is gradually changed to automatically compensate the flexible deformation of a cantilever end, and each of the input shaft and star gear shafts comprises a cantilever and a hollow structure to increase the elastic deformation ability and play a role of storing lubricating oil. The main speed reducer of the fan of the novel GTF aircraft engine has beneficial effects of simple structure, simple technique, good uniform loading and floating effect, small speed reducer volume, strong bearing capacity, large transmission power and small vibration noise and is capable of realizing the fixed-point spray lubrication for the star gears and bearing.

The invention discloses a tilting-pad thrust bearing supported through an elastic disc. The tilting-pad thrust bearing is mainly composed of a thrust disc (1), a tilting material layer (2), the elastic disc (3) and a copper ring (4). The copper ring (4) is bonded to the lower surface of the elastic disc (3) and has the functions of supporting the elastic disc (3) and improving the strength of the elastic disc (3). The tilting material layer (2) is bonded to bosses (5) of the elastic disc and used for bearing axial thrust from the thrust disc (1). The tilting-pad thrust bearing has the beneficial effects of being simple in structure, convenient to machine and the like; the integral machining manner is adopted in the elastic disc, and it can be guaranteed that tiles have high planeness; and according to the thrust bearing, the character of deformation coordination of elastic materials is ingeniously utilized, and the thrust bearing has outstanding performance in the aspects of vibration reducing, noise lowering, tile load equalizing, lubricating and the like.

The invention relates to a split-type herringbone gear and a planetary transmission device thereof, which belong to the technical field of mechanical transmission; it includes a radially segmented and assembled herringbone internal gear, an axially separated herringbone external gear, and a gear with a load equalizing effect. Herringbone planetary gear and planet carrier; herringbone planetary gears are arranged on the radially segmented herringbone inner gear, and different herringbone planetary gears are connected through a planet carrier; axially separated herringbone outer gear Mesh connection with herringbone planetary gear. The present invention realizes a herringbone planetary transmission device with controllable stiffness fluctuation and good planetary gear load balance through the mutual cooperation between the phase-adjustable herringbone external gear, the herringbone internal gear and the herringbone planetary gear , which solves the problems of difficult machining, difficult installation and large fluctuations in stiffness of herringbone gears, and provides an effective transmission structure for mining, marine and aviation high-power applications.

The invention discloses a planet carrier structure with flexible floating and uniform loading effects. The planet carrier structure comprises a flexible support, connecting bolts, a planet carrier, aninner ring gear, a sun gear and planet gears. The sun gear and the five planet gears are arranged in the planet carrier, the inner gear ring sleeves the planet carrier, and the planet gears are meshed with the inner gear ring and the sun gear respectively. An annular thin plate is arranged on the flexible support, the flexible support is connected with the planet carrier through the connecting bolt, the connecting position is located in a center position of a thickness direction of the planet carrier, and ring plates, elastic washers, inner bushings, intermediate bushings, outer bushings andanti-extrusion rings are arranged at the connecting position, so that the flexible connection is realized. In the meshing process of the planet gears, slight floating can be made in an axial directionand a circumferential direction through the planet carrier, and the load on each planet gear can be balanced, so that the whole planet carrier has a good uniform loading effect. When vibration is generated on a top of an annular thin wall, an effect of relieving vibration and impact is achieved by elastic deformation of the annular thin wall.

The present invention proposes a WW-NGWN differential multi-connected planetary reducer, including a machine base, an input shaft, an output shaft, a center wheel, an inner ring gear, a planetary wheel, and a planet carrier; the center wheel is divided into a first-stage center wheel and a second-stage center wheel The first-level center wheel, the inner ring gear includes the first inner ring gear and the second inner ring gear; the planetary carrier is divided into a first-level planetary carrier and a second-level planetary carrier, and the planetary gear is divided into a first-level planetary gear and a second-level planetary gear; The planetary gear meshes with the first-stage sun wheel and the second-stage sun gear simultaneously to form the first differential output of the first-stage reduction system; the first-stage planetary gear meshes with the first-stage sun wheel and the first ring gear to form the first Two differential outputs; the two-stage planetary gear meshes with the two-stage center wheel, the first ring gear, and the second ring gear simultaneously to form a two-stage reduction system; the second ring gear is fixedly connected to the output shaft. The speed reducer provided by the present invention has the advantages of large reduction ratio, large load capacity and high reliability under the condition of small volume on the premise of possessing the advantages of NGW and NGWN type planetary speed reducers.