14results about How to "Improve radial stiffness" patented technology

The utility model provides a wheel structure and a vehicle. The wheel structure comprises a tire bead, a rim and a plugging piece. The rim is mounted in a seam allowance of the tire bead, and an annular transition groove is formed between the rim and the seam allowance; and the plugging piece is installed in the transition groove, located on the side, facing the exterior of the vehicle, of the tire bead and the rim and configured to plug the transition groove so as to prevent airflow and foreign matter from entering the transition groove. According to the vehicle tire, the wind resistance of the vehicle tire during walking is reduced, foreign matter is prevented from being clamped in the transition groove, and the safety performance of the vehicle tire is guaranteed; when the vehicle is a new energy vehicle, through the arrangement of the plugging piece, the buffering of the vehicle tire, the supporting of the vehicle tire in the radial direction and the lateral direction, the radial rigidity of the vehicle tire and the supporting of the lateral force of the vehicle tire are further increased, the number of gaps of tire swelling and rim cracking is reduced, and the steering response speed and the steering rear axle following performance are improved.

The invention relates to a gas phase modulation integrated device for a thermal coupling type multi-stage pulse tube refrigerator. The gas phase modulation integrated device comprises a high-temperature-stage inertia tube, a gas reservoir assembly, a room-temperature piston and a plate spring assembly. The gas reservoir assembly comprises a first gas reservoir and a second gas reservoir; the high-temperature-level inertia pipe comprises a first inertia pipe and a second inertia pipe, the first inertia pipe is located on the outer side of the gas reservoir assembly, and the second inertia pipe is located in the first gas reservoir; one end of the first inertia tube is connected with a refrigerator high-temperature-stage hot end gas distribution seat, and the other end is connected with the second inertia tube; the plate spring assembly is mounted in the second air reservoir; one end of the room-temperature piston extends into the second air reservoir and is connected with the plate spring assembly, and the other end of the room-temperature piston is connected with a low-temperature-stage hot-end air distribution seat of the refrigerating machine. The plate spring supporting and room temperature piston phase modulation mode is adopted, the phase modulation capacity is greatly improved, the performance and efficiency of the refrigerating machine are improved, the space occupied by the phase modulation device on the periphery of the refrigerating machine is reduced, the structure of the refrigerating machine is more compact, and the reliability of the whole machine is improved.

The invention relates to a hinge traction device which comprises a hinge assembly and a traction assembly. The rear hinge seat is fixedly connected with the front hinge seat; the upper traction seat is fixedly mounted at the bottom of the rear hinge seat; the traction assembly is fixedly installed below the hinge assembly and comprises a lower traction seat, a lower traction seat, a lower traction seat, a lower traction seat, a lower traction seat and a lower traction seat, and the lower traction seat is fixedly connected with the upper traction seat. The two traction pull rods are installed on the two sides of the lower traction base respectively. Hinged connection between the two adjacent vehicle bodies is achieved, the mechanical decoupling capacity is achieved, and it is guaranteed that the two vehicle bodies move transversely, rotate and deflect relatively. The anti-shearing structure for the hinge traction device and the vehicle body connecting bolt is arranged, so that the shearing force borne by the bolt is reduced. The structure has the advantages of being high in bearing capacity, high in reliability, simplified in structure, light in weight and the like.

The application relates to a self-cooling ceramic cylindrical roller, a bearing and an experimental temperature measuring device, and relates to the technical field of roller bearings, which comprises a cylindrical roller body, a plurality of convection cooling cavities are arranged in the roller body along the axial direction of the roller body, the convection cooling cavities are uniformly and interval distributed along the axial direction of the roller body, and reinforcing ribs are formed between the adjacent convection cooling cavities; a plurality of pumping air holes are arranged in the two end faces of the roller body, each pumping air hole is communicated with a corresponding convection cooling cavity; the pumping air holes are uniformly and interval distributed along the axial direction of the roller body on the end face, each pumping air hole extends in an arc shape from the axis of the roller body to the outer periphery on the end face; pumping blades are formed between the adjacent pumping air holes, the pumping blades disturb air when the roller body rotates, air is pumped into the corresponding convection cooling cavity from one end pumping air hole and is discharged from the other end pumping air hole. The application has the beneficial effects of improving the air flow efficiency and strengthening the heat dissipation effect.

The invention discloses a welding embracing ring assembly of a cylindrical structural part and a welding tool, and belongs to the technical field of cylindrical structural part welding. The method is used for solving at least one of the problems that in the prior art, a lower-layer skin of a cylindrical structural part lacks continuous and stable supporting, deformation or displacement is caused, welding seam gaps are not uniform, the centering precision of a to-be-welded welding seam is reduced, and the welding quality is poor. The welding embracing ring assembly comprises a front-end embracing ring, a rear-end embracing ring, a front-end shape maintaining assembly, a rear-end shape maintaining assembly and a middle shape maintaining assembly, wherein the front-end shape maintaining assembly, the rear-end shape maintaining assembly and the middle shape maintaining assembly are used for supporting a lower side skin; the front-end shape-maintaining assembly is arranged in the annular area of the front-end embracing ring and located on the inner wall of the inner concave position of the front end of the lower side skin, the rear-end shape-maintaining assembly is arranged in the annular area of the rear-end embracing ring and located on the inner wall of the inner concave position of the rear end of the lower side skin, and the middle shape-maintaining assembly is arranged between the front-end shape-maintaining assembly and the rear-end shape-maintaining assembly and located in the middle of the lower side skin. The method can be used for welding the cylindrical structural member.

The application discloses a high-speed air static pressure spindle and belongs to the technical field of ultra-precision machining machine tools. The high-speed air static pressure spindle comprises a rotor and a workpiece seat fixedly connected with each other, a shaft sleeve sleeved on the rotor, a motor and a thrust bearing assembly located at the front end of the rotor, the shaft sleeve is sequentially provided with a front radial air static pressure bearing and a rear radial air static pressure bearing in the axial direction, the front radial air static pressure bearing and the rear radial air static pressure bearing are independent split structures, the rear radial air static pressure bearing is positioned in the shaft sleeve through a conical matching surface, and the motor is arranged between the front radial air static pressure bearing and the rear radial air static pressure bearing. The split radial air static pressure bearing structure with the centralized motor is adopted, the rear bearing is positioned through the conical matching surface, the rotor forms a simply supported beam structure, and the high-speed rotation stability of the spindle is greatly improved.

The present invention belongs to the field of tire technology. In view of the problems of poor shock absorption performance and high noise in existing airless tires, the present invention provides a bionic airless tire, which includes a tread, a connecting layer, a bionic buffer structure and a mounting body from the outside to the inside, wherein the bionic buffer structure includes a Z-shaped buffer plate imitating the hind limbs of a feline, a honeycomb elastomer, a first outer ring and a first inner ring, and the area between the Z-shaped buffer plate, the first outer ring and the first inner ring is filled with a honeycomb elastomer, and the holes of the honeycomb elastomer gradually increase from small to large from the first inner ring to the first outer ring. Through the Z-shaped buffer structure and the diamond honeycomb structure, the tire can effectively buffer both large vibrations and small vibrations, break the wind noise frequency, reduce the wind noise of the airless tire, and avoid the problem of permanent deformation of the single structure itself due to insufficient strength.

The utility model relates to the technical field of corrugated pipes, in particular to a reinforced structure wall composite pipe. The utility model discloses a reinforced structure wall composite pipe, which comprises a pipe main body and corrugated parts connected on the peripheral surface of the pipe main body, a reinforcing rib is connected between two adjacent corrugated parts, the height of the reinforcing rib in the radial direction is lower than the wave crest height of the corrugated parts, and arc top ribs are arranged at the joints of the reinforcing ribs and the corrugated parts. The reinforcing ribs are connected between every two adjacent corrugated parts, the axial strength and the impact strength of the pipe can be improved, meanwhile, the height of the reinforcing ribs in the radial direction is smaller than the height of the wave crests of the corrugated parts, the arc top ribs are further arranged at the joints of the reinforcing ribs and the corrugated parts, the structural strength of the wave crests of the corrugated parts can be further improved, and the service life of the pipe is prolonged. The problem of reverse bending deformation of the wave crests of the corrugated parts at the alternating positions of the reinforcing ribs is avoided, and the radial rigidity of the pipe can be effectively improved.

The utility model provides a single-cylinder vertical motor base, which belongs to the technical field of motor bases, and is characterized in that the base adopts a single-cylinder structure, so that the structural rigidity and stability of the whole base are ensured, and vibration reduction is facilitated; moreover, the whole structure of the base is simple and compact, the number of parts is reduced, and the manufacturing cost and the assembling difficulty of the base are reduced. The first end plate and the second end plate are welded to the two ends of the machine barrel respectively, vertical installation of the machine base is facilitated, the radial rigidity of the machine base is enhanced, and the strength and stability of the installed machine base are guaranteed; the tiepiece is arranged on the outer wall of the machine barrel and connected with the end face of the first end plate and the outer wall of the second end plate, so that the connecting area of the tiepiece and the second end plate is increased, the connecting strength and the structural stability between the tiepiece and the second end plate are improved, meanwhile, the axial strength of the machine base is improved, and the overall structural rigidity of the machine base is improved; the inherent frequency of the base is improved, and the electromagnetic noise of the motor is reduced, thereby reducing the vibration noise of the motor.

The invention relates to an end frame product and a batch additive manufacturing method for efficient stacking printing of the end frame product, and belongs to the technical field of additive manufacturing. The batch additive manufacturing method for efficient stacking printing of the end frame products comprises the steps that an end frame product model is composed of three layers of end frame units which are the bottom layer, the middle layer and the top layer in sequence from bottom to top in the vertical direction, the end frame unit of the bottom layer is connected with a base plate, the end frame unit is of a circular thin-wall structure, and the central axis of the end frame unit is perpendicular to the base plate; a supporting structure is arranged in the end frame unit; connecting structures are arranged among the bottom layer, the middle layer and the top layer; adjusting the model, and controlling the deformation of each layer within + / -0.2 mm through analogue simulation, preprinting and local reverse modeling; additive printing is conducted, specifically, the adjusted model is sliced, and then additive printing is conducted; and an end frame product is obtained after heat treatment. The overall deformation of the obtained end frame product is less than or equal to + / -0.5 mm, and the roundness is less than or equal to +

This invention discloses a construction method for controlling the construction alignment and overturning resistance of a type A cable tower, comprising the following steps: preliminary preparation; design, verification, and evaluation of the cable tower's anti-overturning combined control system, which includes a cable tower hollow column construction alignment combined control system formed by connecting the tower column stiffening frame system and the anti-overturning system, a multi-level horizontal active cross bracing system, and a prestressed concrete upper crossbeam system. This system resists the overturning force generated by the upward suspended construction of the hollow tower column through the cable tower hollow column construction alignment combined control system. Combined with the synergistic effect of the horizontal active cross bracing system and the prestressed concrete upper crossbeam system, it jointly offsets the inward tilting force generated by the self-weight and construction load of the two limb tower columns during construction, thereby balancing the tower column overturning moment and ensuring that the cable tower alignment, inward tilting force, and tilt angle meet design requirements. The method also includes the following steps: dynamic control analysis of the spatial position of the cable tower column construction segments; construction and dismantling of the cable tower anti-overturning combined control system.

The invention belongs to the technical field of wind driven generators, and relates to a rotor braking structure and a semi-direct-driven wind driven generator. On the basis of the existing technical scheme, a switching cylinder structure is omitted, and the brake disc is installed on the end face of the rotor support magnet yoke through the bolts. The inner circle of the rotor support magnet yoke is matched with the brake disc through the seam allowance, the brake disc can support the rotor support magnet yoke in the radial direction, and therefore rib plates evenly distributed on the circumference close to one side of the brake disc in the prior art can be omitted for the rotor support. According to the brake disc, the brake function is achieved through cooperation of the inner circle and the brake instead of cooperation of the outer circle and the brake, the axial rigidity of the rotor support magnet yoke is large, the axial rigidity of the brake disc can be effectively improved after the rotor support magnet yoke is connected with the brake disc, axial runout is improved, and assembly accuracy is improved. According to the scheme, switching cylinder installation is omitted, assembling switching matching is reduced, the assembling precision is improved, and the manufacturing cost of the generator is reduced.

The utility model provides a kind of based on pulling type guiding structure's lifting ladder stand, including multiple ladder body, each ladder body includes climbing board and the connecting groove fixedly connected respectively in the both sides of climbing board, multiple foot hole along its length direction arrangement is opened in climbing board, two ladder bodies adjacent are connected by head-tail insertion, the connecting groove in inner layer is inserted in the connecting groove in outer layer, and one end of ladder body is fixedly connected with spring pin, and the both ends of ladder body are respectively provided with the adjusting hole for spring pin to extend out. By setting ladder stand as by multiple head-tail insertion ladder body composition, and the connecting groove in inner layer is inserted in the connecting groove in outer layer, to form the structure of individual sleeve. When the ladder stand is stored, press spring pin to realize the unlocking between ladder body, and the ladder body in inner layer is inserted into outer layer ladder body by sliding upward, realize the quick storage of ladder stand, single person can complete operation, and the combination limiting of connecting groove and spring pin improves the stability of ladder stand.

The utility model relates to the technical field of wheel rim, especially a deformation prevention electric vehicle wheel rim with annular reinforcing rib, including wheel rim main part, the both sides of wheel rim main part are provided with the flange that protrudes outward, and the both sides flange between are provided with the inner recessed arc surface that recesses inwards, the reinforcing rib subassembly sets up on wheel rim main part for reinforcing the overall strength of wheel rim main body, the utility model discloses a high rigidity three -dimensional support frame is constructed through setting up the annular reinforcing rib subassembly of inside and outside echo, greatly enhanced the radial rigidity and bending -resistant capacity of wheel rim body, can effectively resist the violent impact from the road, when full load travels or passes through the bumpy road, the impact force can be dispersed and absorbed quickly through this set of main bearing frame, thereby fundamentally avoided the wheel rim body because of local stress concentration and produced the recess or bulge deformation, ensured the sealing reliability of tire and wheel rim joint, effectively prevented the risk of air leakage, tire pressure anomaly and even tire burst.