7results about How to "Low processing and manufacturing costs" patented technology

The utility model relates to the field of rod and wire short stress rolling mills, in particular to a transmission shaft and speed reducer connecting shaft sleeve which comprises a shaft sleeve body, one end of the shaft sleeve body is provided with a first round hole used for allowing an output shaft of a speed reducer to be inserted, and the other end of the shaft sleeve body is provided with a boss integrally formed with the shaft sleeve body. And a plurality of counterbores which are used for insertion of connecting pieces and are connected with an output shaft of the speed reducer are formed in the axial direction of the boss. The connecting shaft sleeve can be selectively connected with a standard transmission shaft flange, meanwhile, the stress area of a key between the transmission shaft flange and the connecting shaft sleeve is increased, and the possibility that a connecting bolt of the transmission shaft flange and the connecting shaft sleeve is fractured due to overlarge stress is reduced.

The utility model provides a kind of electric drive axle tube press fitting device, belong to the technical field of automobile parts processing and manufacturing, it includes upper pressing positioning device, lower positioning device and guiding reset device;The upper pressing positioning device includes upper connecting plate, and upper connecting plate top is provided with upper pressing plate, and upper connecting plate lower is provided with the upper positioning disc with upper positioning pin;Multiple magnets are provided on the upper positioning disc;The lower positioning device includes lower connecting plate, and lower positioning disc is provided on lower connecting plate;The guiding reset device includes guide column, and upper limit plate, guide sleeve, spring pressing block, reset spring, spring limit block, lower positioning seat are respectively provided on guide column;It further includes support seat, and support seat lower is matched with lower connecting plate, and upper is provided with limit block.This device is a kind of more flexible device, can realize the press fitting of different specifications left and right shaft tube assembly, satisfies sample piece submission cycle while ensuring product quality.

A gearbox output assembly, relating to the field of gearbox technology, includes a housing, an output shaft, a planetary carrier, a radial support bearing, and two axial support bearings. The planetary carrier is sleeved around the output shaft, and the planetary carrier and output shaft are fixedly connected. The planetary carrier and output shaft are rotatably fitted to the housing via the radial support bearing and the two axial support bearings. The two axial support bearings are spaced apart along the axial direction of the output shaft. The radial support bearings are supported between the housing and the planetary carrier or between the housing and the output shaft, and their rotation axes are parallel to the axis of the output shaft. The two axial support bearings are respectively supported between the housing and the planetary carrier and between the housing and the output shaft, with each axial support bearing having an angle with the axis of the output shaft. At least one bearing overlaps with the planetary carrier along the axial direction of the output shaft. This design reduces axial dimensions, overall size and weight, and manufacturing costs.

This invention relates to the field of screw extruder technology, specifically to a modular, counter-rotating parallel twin-screw continuous compounding extrusion apparatus and extrusion method. The extrusion apparatus includes a frame base, with a first support platform and a second support platform sequentially formed along its length. A drive unit is located on the top of the first support platform, and an extrusion unit is located on the top of the second support platform. The extrusion unit includes an upper cylinder and a lower cylinder connected together. Screw mounting seats are located at both the upper and lower cylinders, and multiple liquid guide pipes are provided within the screw mounting seats. Two extrusion screws are arranged parallel to each other at the screw mounting seats. The drive unit drives the two extrusion screws to rotate. Each extrusion screw includes a mandrel with multiple threaded elements fitted onto it. The threaded elements are circumferentially fixed to the mandrel. The extrusion unit also includes a feeding mechanism located on the top of the upper cylinder near the drive unit. An outlet is formed at the end of the extrusion screw away from the drive unit. This invention achieves universality of the extrusion screw through replaceable threaded elements.

This application relates to the field of optical system design technology, and discloses a design method, device, and electronic device for an optical telescope based on a stitched primary mirror. The method includes: determining the current aspherical surface parameters of aspherical stitched sub-mirrors in different layers of the optical system according to the optical system constraints of the stitched primary mirror; iteratively optimizing the current aspherical surface parameters according to a pre-constructed comprehensive evaluation function; obtaining optimized aspherical surface parameters of the aspherical stitched sub-mirrors in different layers that satisfy the design requirements of the comprehensive evaluation function within the target field of view; and the best-fit sphere corresponding to the optimized aspherical surface parameters; and outputting the optimization results. This invention can reduce the manufacturing difficulty and cost of the stitched sub-mirrors, avoid the introduction of complex aberration correction optical elements, and ensure the versatility, multifunctionality, and scalability of the overall system.

The application discloses a single-rotor turbofan engine, which comprises a rotating shaft, a fan, a centrifugal compressor, a turbine and a combustion chamber, all of which are located in an engine outer casing shell; the fan rotor, the centrifugal compressor rotor and the turbine rotor are fixedly assembled on the rotating shaft in sequence; a fan airflow channel is formed between the inner wall of the engine outer casing shell and the fan rotor, an inner bypass channel leads to the centrifugal compressor, and an outer bypass channel leads to the exhaust port of the engine; after the inner bypass airflow is discharged from the centrifugal compressor, the inner bypass airflow enters the combustion chamber to be mixed with fuel and combusted to generate high-temperature and high-pressure gas, which drives the turbine rotor to rotate and drives the fan rotor and the centrifugal compressor rotor coaxially arranged with the turbine rotor to rotate to perform work on airflow pressurization; and the high-temperature and high-pressure gas drives the turbine rotor to rotate and is discharged from the exhaust port. The single-rotor turbofan engine has the advantages of less pressurization stages, high pressure ratio, small engine size, simple structure, good reliability and reduced manufacturing cost.

The utility model relates to a multifunctional track sand cleaning vehicle, which comprises a vehicle body, wheels fixedly installed on the bottom surface of the vehicle body, a control chamber arranged at the front end of the vehicle body, control components arranged in the control chamber, a sand discharging auger mechanism fixedly installed on the bottom surface of the vehicle body, a pneumatic sand suction mechanism fixedly installed on the surface of the vehicle body, a hydraulic pump station fixedly installed on one side of the pneumatic sand suction mechanism, the hydraulic pump station being fixedly installed on the surface of the vehicle body, a sand storage tank fixedly installed on the surface of the vehicle body, a generator set fixedly connected to the sidewall of the sand storage tank, and a conveying mechanism fixedly arranged on the sand storage tank. The utility model has the advantages of reasonable structure design, novel conception, convenient operation, easy processing, low processing and manufacturing cost, saving of manpower, saving of sand cleaning time, improvement of sand cleaning efficiency, complete sand cleaning, special use for sand cleaning of railway tracks under harsh environmental conditions, and integration of sand collecting, sand collecting, sand suction and sand discharging.