8results about How to "Reduce purchasing costs" patented technology

The invention provides a hydraulic servo oil cylinder trunnion positioning and repairing method and a positioning device, which are used for carrying out in-situ welding and repairing on a fractured oil cylinder trunnion, and the method comprises the following control conditions: (1) heating an oil cylinder barrel before welding and carrying out heat preservation on the oil cylinder barrel after welding; (2) the tensile strength of the selected welding rod is higher than that of an oil cylinder barrel matrix; and (3) the welding rod is baked and heated before welding.

The utility model relates to the technical field of nail making machines, and discloses a double-line high-speed nail making machine which comprises a lower supporting table, a nail making mechanism is fixedly arranged at the position, close to the rear side, of the upper end of the lower supporting table, and a feeding mechanism is fixedly arranged at the position, close to the front side, of the upper end of the lower supporting table. A side protection frame is fixedly arranged on the side, close to the feeding mechanism, of the lower supporting table, a heat dissipation window is arranged at an opening of the side, close to the feeding mechanism, of the side protection frame, a correction mechanism is fixedly arranged at the position, close to the feeding mechanism, of the outer portion of the side protection frame, and the nail making mechanism comprises a driving table. According to the automatic nail making machine, correction, feeding and nail making are integrated through layout optimization, the structure is compact, and operation is stable. A double-wire synchronous working mode is innovatively adopted, machining of two steel wires is completed at the same time, and the production efficiency is greatly improved. All the mechanisms are suitable for raw materials of various specifications, correction is accurate, the nail making quality is high, the production cost is effectively reduced, and the practicability and market competitiveness of equipment are improved.

The utility model relates to a waste steel treatment device, and belongs to the technical field of mechanical devices. According to the technical scheme, a smelting furnace (8) and a base (9) are fixedly connected into an integrated structure, and an anvil (2) is of an integrated structure composed of a pressing rod (21) and a pressing plate (22); a plurality of guiding stand columns (1) are arranged on a base (9), a fixed cross beam (3), a movable upper cross beam (4) and a movable lower cross beam (5) are arranged among the guiding stand columns (1), the movable upper cross beam (4) and the movable lower cross beam (5) are respectively connected to the guiding stand columns (1) in an up-down sliding mode, two clamping hydraulic cylinders (7) are arranged between the movable upper cross beam (4) and the movable lower cross beam (5), and a lifting hydraulic cylinder (16) is in driving connection with the movable lower cross beam (5). And a plurality of graphite electrodes (13) are fixed at the bottom of the smelting furnace (8) through ceramic bent plates (11). The utility model has the beneficial effects that a trepanning bar and scrap iron which are generated during cylinder body production can be smelted into a steel ingot which is used as a forging raw material.

This invention discloses a method for repairing the wear-resistant layer of a hollow shaft in a ball mill, comprising the following steps: pretreatment of the surface of the hollow shaft to be repaired by high-pressure water washing, graded grinding, and wiping with anhydrous ethanol; preparation of a wear-resistant coating slurry according to the mass ratio of epoxy resin:silicon carbide:curing agent of 1:(0.5-1.5):(0.01-0.1), and forming a uniform mixture by mechanical stirring; uniformly coating the slurry onto the surface of the hollow shaft, and increasing the density by rolling, patting, and layer-by-layer compaction, controlling the coating thickness within the range of 5-50 mm; adopting a stepped heating heat treatment process, first holding at 40-60℃ for 2-3 hours, then raising the temperature to 80-120℃ and holding for 1-2 hours, and finally naturally cooling to room temperature to form a wear-resistant protective layer. The wear-resistant layer prepared by this method has a dense structure and a Rockwell hardness of not less than HRC60, which can improve the service life of the hollow shaft, reduce equipment maintenance costs, reduce the consumption of grease in the lubrication system, and improve the operational stability and production efficiency of the equipment.

This invention relates to the field of information display technology, and discloses a conference screen sharing method and related equipment based on frame buffering and incremental updates. The method includes managing and processing the frame buffer resources of a remote host and a local host; using incremental update technology, the remote host and local host identify the changed parts of the screen content after frame buffer resource management and processing, and generate image difference information; and transmitting the image difference information between the remote host and the local host to complete the conference screen sharing based on frame buffering and incremental updates. This invention, by managing and processing the frame buffer resources of the remote host and local host, can effectively integrate and optimize the utilization of screen resources; the use of incremental update technology allows the system to identify and transmit only the changed parts of the screen content, rather than the entire screen image. During the conference screen sharing process, only the changed image areas are captured and transmitted, thereby significantly reducing the amount of data that needs to be transmitted.

A kind of based on blank's aero-engine intermediate casing radial reference positioning method, based on blank feature, by mathematical modeling, the actual coordinates of two reference holes are taken as known quantity, the actual coordinate value of radial reference is obtained;When part alignment, let part one pin hole be in X axis positive direction, according to part structure, then another pin hole must be in second quadrant, then the actual coordinates of two pin holes can be automatically measured by machine tool online measurement function, the actual coordinate value of radial reference is obtained by using global variable function to call two reference hole coordinates, and finally the automatic positioning of radial reference is completed;In processing, the radial reference of part is determined by aligning the rotary circle.The advantages of the present application are: the problem of unable to process due to special part structure is solved.It can be applied to all parts processing with one-face-two-pin method to determine reference, instead of traditional mechanical alignment method, so that the reference positioning and processing of this type of blank are no longer limited by special fixtures.

The application relates to the technical field of candesartan intermediate synthesis, in particular to a device for synthesizing candesartan intermediate; the device comprises a micro-channel reactor, a tubular reactor and a continuous separator; the tubular reactor further comprises an outer tube and a mixer installed in the inner part of the outer tube; the mixer comprises a tube body and an SK core; the SK core is composed of a plurality of left and right twisted 180-degree spiral pieces; liquid inlets and liquid outlets are arranged on the surface of the outer tube; the SK core can be detachably connected, so that the user can separately detach the blocked SK core, clean or replace the blocked SK core, the expensive SK type static mixer does not need to be replaced as a whole, the equipment procurement cost is greatly reduced, the tubular reactor as a whole does not need to be complicatedly detached and reassembled, the downtime is obviously reduced, and the overall production efficiency of the synthesized candesartan intermediate is improved.

This utility model discloses a portable X-ray machine simulation device for teaching, belonging to the technical field of teaching demonstration equipment. It includes a housing and a tripod. A light source is located at the top of the housing's inner cavity, and a light-transmitting window and measuring ruler are located at the bottom. A power switch is located on the outside of the housing. The window has an adjustment mechanism and a centering structure. The tripod's pan-tilt head has a fixing structure and a lifting mechanism for holding the housing and adjusting its height. The light source simulates X-rays, illuminating the area to be inspected through the bottom window. The extendable measuring ruler measures distance. The window adjustment mechanism adjusts the size of the irradiation field, and the centering structure marks the center position of the window, facilitating placement of the area to be inspected at the center of the light beam to simulate X-ray centering. After operation, the housing is removed from the tripod, and the tripod folds and retracts for easy carrying and storage. This utility model has a simple and compact structure, is easy to operate and carry, and is inexpensive, making it suitable for teaching applications.