705results about How to "Guaranteed clearance" patented technology

The invention discloses a method for preparing an antifriction wear-resistant coating on a metal matrix surface. The method comprises the following steps: (I) uniformly mixing wear-resistant powder with metal powder to obtain cladding powder; (II) performing laser cladding on the metal matrix surface by use of the cladding powder to form multiple cladding belts in horizontal-longitudinal crossing, wherein the cladding belts in horizontal-longitudinal crossing form a cladding skeleton of a mesh structure; and (III) filling the metal matrix surface with a lubricating phase, and polishing to obtain the antifriction wear-resistant coating on the metal matrix surface. According to the method disclosed by the invention, the cladding skeleton prepared on the metal matrix surface through the laser cladding process has a remarkably high hardness value; the cladding skeleton can realize a load dispersing function in a wear process to effectively prevent accumulation of plastic deformation on the metal matrix surface; and meanwhile, the mesh structure of the cladding skeleton realizes a support effect on the follow-up film forming process of the lubricating phase.

The invention discloses an endotoxin adsorbent used in hemoperfusion, and a preparation method thereof. The preparation method comprises the following steps: a porous carrier is prepared; the carrier is polystyrene divinylbenzene resin or polymethyl methacrylate resin, wherein the pore size of the resin is 5-50nm and the specific surface area of the resin is no less than 500m<2>/g; residual double bonds of the carrier resin are subjected to epoxidation modification; and ligands are immobilized. According to the scheme of the invention, a synthesis process route is changed, such that adsorbent harmful substance residue is avoided, and adsorbent adsorption capacity is improved. Specifically, residual double bonds of the adsorption resin are subjected to epoxidation modification, such that the epoxy group amount is increased; with the epoxy groups, hydrophobic tethers are added, such that ligand movement capacity is improved, and the adsorbent is provided with a good endotoxin adsorption effect; and resin pore size and specific surface area are controlled, such that the adsorption amount and removal rate of the adsorbent upon cytokines are ensured.

The invention discloses a button waterproof structure of a washing machine; the button waterproof structure comprises a control panel on the top of the washing machine, a decoration board above the control panel and a computer board component below the control panel; the control panel is provided with a plurality of sets of buttons and display areas corresponding to a computer board circuit; the computer board component comprises a circuit board with a display screen, a computer board box below the computer board and used to support the computer board, and a box cover plate above the computer board and used to protect the computer board; the button waterproof structure is characterized in that the lower bottom surface of the decoration board and the upper plane of the box cover plate are provided with an upper lug and a lower lug corresponding to the display areas, so as to protect a water permeability resistant component of the display screen; waterproof mechanisms used to prevent water from being leaked from the gaps of button holes are arranged at the positions of corresponding buttons of the decoration board and between the buttons and the box cover plate. The structure not only can ensure the production efficiency and does not greatly increase the production cost, but also can make sure the buttons have good touch feeling and the waterproof performance meets requirements.

The invention increases sewing quality. The integrated feed sewing machine contains pin up-and-down movement mechanism, pin swing mechanism, lower feed mechanism, upper feed mechanism, press mechanism, thread-cutting mechanism, thread-taking-up mechanism and height adjustment mechanism adjusting up-and-down travels of upper feed foot and presser foot by upper feed mechanism. Height adjustment electromotor is set as rotating driving source of the height adjustment mechanism. The control part drives the height adjustment electromotor to adjust the height to set the distance between the upper feed foot and the pin plate to 0 after the thread-cutting mechanism cuts the thread and is ready to drive the thread-taking-up instrument. So the thread-catching part of thread-taking-up instrument is ensured to pass through the clearance between lower end of the pin and the upper feed foot. The cutted terminal of top thread can be taken up to the upwards of the upper feed foot, thereby shortening the length of residual terminal of top thread sewed in the sewed things after thread-cutting.

The invention discloses an optical source assembly structure of flip LED chip integrated package and a manufacturing method thereof. The method comprises the steps of arranging flip LED chips on a flexible transition base film to form a chip array; coating the base film uniformly with packaging glue to a certain thickness, and curing the packaging glue; removing the flexible transition base film, and using the cured packaging glue as a carrier substrate of the chip array; completing the electrical interconnect integration of electrodes among the chips on the packaging glue carrier substrate; printing and curing thermally conductive and insulation glue on the carrier substrate after electrical interconnect integration, to form various optical source assembly unit cells; and obtaining a separated optical source assembly in accordance with the various optical source assembly unit cells. The optical source assembly is bonded and assembled with a thermally conductive substrate to achieve electrical connection with an external circuit to be combined into an optical source. The method is free from the form of isolated chip interconnect integrated package on a COB board in the current packaging industry, eliminates the process steps of surface mounting and crystal curing and the like on the COB board, and simplifies the manufacturing process.

The invention discloses a multi-tow fiber preimpregnation laying device which comprises a grid, a multi-tow yarn drum mounting part, a tension adjusting part, a glue preimpregnation part, a glue content control part, a synchronous moving part and a laying part. The prepared base glue liquor is stored in a glue slot, the multi-tow yarn drum part is fixed on a rotary movable support; multi-tow fibers are arranged in order through the grid and then pass through a three-roll tension unit; a tension sensor is used for measuring and controlling the fiber laying tension; the multi-tow fibers are then impregnated with glue through the glue slot; extra glue is squeezed out through a glue squeezing roller; the multi-tow fiber impregnated with glue are arranged through the grid to form broad-width preimpregnation materials; and finally, the broad-width preimpregnation materials are laid through a laying head to form composite structural members. The multi-tow preimpregnation laying device has the advantages that the preimpregnation and the laying of the fibers are integrated; the laying efficiency is improved; fiber tension is uniform; the laying accuracy is high; and the glue content is controlled within 2 percent.

The invention relates to a mechanical pressing device, particularly a novel laser welding pressing device for pressing and leveling plate materials during the laser stitch welding process. The device is arranged on a gantry and comprises a laser head, a Y-directional slipway, and a front and a rear pressing beams, wherein the front and the rear pressing beams are arranged at the upper part of a gantry worktable in a vertical reciprocating manner; a plurality of pressing wheels are respectively arranged on the front and the rear pressing beams; the Y-directional slipway mounted on the gantry beam is positioned between the front and the rear pressing beams and can carry out a reciprocating movement along the Y direction; a right press roll which can move up and down is arranged on one side of the Y-directional slipway, and the laser head and a installation base are arranged on the other side, and a left press roll which can move up and down is arranged on the installation base; the laser head and the left and the right press rolls are coupled with the Y-directional slipway; the laser head is positioned between the left and the right press rolls, and the laser head can carry out a reciprocating movement along the X direction and the Z direction; and the laser head work area is surrounded by the left and the right press rolls and the front and the rear pressing wheels. The device has the advantages that the gap and the flatness between a thin plate and a thick plate can be guaranteed and the welding effect is good.

A lithium ion secondary battery includes a positive electrode capable of absorbing and desorbing lithium ion, a negative electrode capable of absorbing and desorbing lithium ion, a porous film interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte: the porous film being adhered to a surface of at least one of the positive electrode and the negative electrode; the porous film including a filler and a resin binder; the resin binder content in the porous film being 1.5 to 8 parts by weight per 100 parts by weight of the filler; and the resin binder including an acrylonitrile unit, an acrylate unit, or a methacrylate unit.

The invention discloses a laser welding machine with follow-up and swaging functions, wherein a motion mechanism can drive a laser welding head to move; the laser welding head comprises a base, a welding head, a compressing wheel, a follower and a position sensing device; the welding head is positioned below the base; the compressing wheel is positioned at the lower end of the base; the circumferential outer side surface of the compressing wheel is tightly butted with a welded plate surface and rolls along the surface; the follower can rotate in the circumferential direction and can be positioned on a side wall of the welding head in a sliding manner in the vertical direction; the circumferential outer side surface of the follower is tightly in contact with the surface of the welded plate surface and rolls along the surface; the position sensing device can sense the lengthwise position of the follower and transmit to a numerical control system; the numerical control system can control the motion mechanism to drive the laser welding head to move; the plate deformation is eliminated; and the clearance between materials to be welded can be ensured; the follow-up of the laser welding head, relative to the welded plate surface can be achieved; the focus point position is kept to be constant; and the welding quality is guaranteed to be firm and stable.

The invention discloses an adjusting device for a concealed skylight of an automobile, which comprises a frame-type supporting rack which consists of four frame strips which are crosswise and integrally fixed. By taking the plane of the supporting rack as a horizontal plane for reference, automobile body positioning blocks which are perpendicular to the plane of the supporting rack and extend downwards, spacers, a skylight overall positioning device, glass positioning blocks, vacuum sucking discs and a control mechanism for the vacuum sucking discs are fixed on the supporting rack. Since the adjusting device has multistage adjusting reference planes, the adjusting device for the concealed skylight of the automobile has the advantages that the gap and surface difference errors between the skylight and a top cover can be effectively ensured to be very small, the quality of the automobile is further guaranteed, the structure is simple, the adjusting device is convenient to use, the application scope is wide, the time and the labor are saved during use, the adjusting accuracy is high, the probability of repetitively adjusting the assembling effect of the skylight can be reduced, the working efficiency is improved and the production cost is reduced. The adjusting device is suitable for the concealed skylights of all kinds of cars.

Disclosed is a built-in outer rotor permanent-magnet motor direct-drive mine hoist. A stator of a permanent-magnet motor is sleeved onto a spindle of the hoist through a stator support structure, a rotor support structure and an inner bearing are sleeved on the spindle of the hoist along two sides of the stator of the permanent-magnet motor, an outer rotor of the permanent-magnet motor is installed on the upper portion of the rotor support structure, an outer bearing and a reel support structure are sleeved on two sides of the spindle of the hoist, a steel wire reel is installed on the upper portion of the reel support structure and outside the outer rotor of the permanent-magnet motor, the outer rotor of the permanent-magnet motor is connected to the inner side of the steel wire reel through a flexible connecting mechanism, and a left support base and a right support base are installed at two ends of the spindle of the hoist. The advantages of compact structure and uniform stress of the built-in hoist are sufficiently used, the outer rotor permanent-magnet motor is simple in structure, excellent in control characteristics, efficient and reliable, system installation and connection of the rotor and the reel of the hoist are facilitated by the outer rotor structure of the motor.

The invention relates to a connecting structure between an upper grid border trim strip and a front bumper of an automobile. The connecting structure comprises the front bumper, an upper grid and the trim strip, wherein the lower edge of the upper grid is connected with the upper edge of the front bumper, and the left edge, the upper edge and the right edge of the upper grid are respectively connected with the trim strip. The left segment, the upper segment and the right segment of the trim trip are connected into a whole. The lower end of the left segment of the trim strip and the lower end of the right segment of the trim strip are respectively provided with a clamping-connecting groove and a through hole. The upper edge of the front bumper is provided with two clamping-connecting folded edges and two clamps, and the two clamping-connecting folded edges are matched with the two clamping-connecting grooves in a one-to-one mode. The lower left corner and the lower right corner of the upper grid are respectively provided with a clamping-connecting hole, and the two clamping-connecting holes correspond to the two through holes respectively. The two clamps penetrate through the clamping-connecting holes respectively and are connected with the through holes in a clamped mode. According to the connecting structure, under the premise that the trim strip is reliably connected with the front bumper and the upper grid, the gap between the trim strip and the front bumper can be effectively controlled. Besides, the connecting structure occupies a small space.

The invention discloses a touch screen display and control structure for a refrigerator and a refrigerator provided with the same. The touch screen display and control structure includes a light-tight display and control panel, a touch screen and a display and control plate assembly, wherein a middle through hole horizontally penetrating through the display and control panel is arranged in the display and control panel; a first fixing part is arranged on the rear surface of the display and control panel; the touch screen is pasted on the rear surface of the display and control panel through a double faced adhesive tape, and the touch screen is positioned at the middle through hole; the display and control plate assembly is fixed on the rear surface of the display and control panel and positioned on the rear side of the touch screen; the display and control plate assembly includes a liquid crystal display and a plastic bracket; the liquid crystal display is positioned on the rear side of the touch screen, and a certain distance is reserved between the liquid crystal display and the touch screen; the liquid crystal display is fixed on the plastic bracket; and a second fixing part matched with the first fixing part is arranged on the plastic bracket. According to the touch screen display and control structure for the refrigerator provided by the embodiment of the invention, the structure is reliable, and the mounting manner is simple, fast and convenient.

The invention relates to a tank-shaped container, comprising a tank body, a reinforcing ring arranged on the outer side of the tank body and a bottom discharging valve arranged below one end of the tank body. A manhole, a safety valve, an air-phase valve, a top discharging hole and an overflowing box are arranged on the top of the tank body. An overflowing tube used for guiding liquid in the overflowing box to the outside of the tank-shaped container is arranged at the bottom of the overflowing box. The two ends of the tank body are respectively welded onto the end frames of the two ends by apron rings, and the end frames of the two ends are respectively connected with a vertical bottom beam and a reinforcing inclined support. A stair fixedly arranged on the end frame of one end is led to a path board fixedly arranged on the top of the tank-shaped container. An angle part, an angle column, a top beam, a bottom beam, the reinforcing inclined support and a top angle board are connected to form the end frame. A reinforcing plate is welded on the internal surface of the lower wall of a rectangular tube of the bottom beam. The tank-shaped container has the main advantages that the distance between the lower surface of the end part of the bottom beam of the end frame and the lower surface of the angle part of the end frame is enlarged, therefore, the stressing condition of the bottom beam of the end frame during conveying is enhanced and the service efficiency of the tank-shaped container is improved.

A passenger conveying apparatus capable of reducing a step turning space, thereby reducing an installation space, and also enabling a step turning operation between the forward and rearward movements of the step to be performed smoothly, the passenger conveying The device comprises: a plurality of cyclically moving steps (5), wherein in the forward movement the pedals face upwards and in the return movement the pedals face downwards; 5) Circularly connected to each other; and a drive sprocket (13) and a drive sprocket (14) that circulate the step chain (12) around the turning portion between the forward path and the return path , wherein the step (5) is connected with the step chain (12) through the crank mechanism (8, 24, 25).

The invention belongs to the field of car part machining molds, and particularly discloses a car U-shaped plate manufacturing mold. The car U-shaped plate manufacturing mold comprises a rack, a movable mold and a fixed mold are arranged on the rack, a hydraulic cylinder is fixed to the rack, the movable mold comprises a pressing plate connected to the bottom end of a piston rod of the hydraulic cylinder, bending punches are connected to the two sides of the pressing plate, a U-shaped mold cavity is formed between the pressing plate and the bending punches, the fixed mold comprises a positioning seat and a base, the positioning seat is matched with the mold cavity in size, a sleeve is arranged in a first through hole, a second air inlet pipe is communicated between the side wall of the sleeve and a cold air outlet end, a second air inlet one-way valve is arranged in the second air inlet pipe, a piston is in sliding connection into the sleeve, the lower side of the piston is fixedly provided with a first connecting rod, a groove communicating with the first through hole is formed in the bottom of the positioning seat, an air bag communicated with the sleeve is arranged in the groove,and a protruding part is arranged on the air bag. According to the scheme, the problem that a machined U-shaped plate is not prone to taking down, and the rejection rate is high is solved.

Cell-to-cell connection plates (1) each integrally having a welding part (2) shaped to fall within a circular end of a battery case (7) and a connecting part (2) extending from this welding part (2) are provided. The cell-to-cell connection plates (1) are attached to one electrode terminal and the other electrode terminal of the battery case (7) by welding the welding parts (2), respectively. The connecting parts (3) of the respective cell-to-cell connection plates (1) attached to each adjoining pair of cylindrical batteries (Ba) are overlapped with each other and coupled into electric connection. Consequently, regardless of whether a plurality of cylindrical batteries (Ba) are axially arranged in series or radially juxtaposed, each adjoining two can be connected to each other by using the identical cell-to-cell connection plates (1) for cost reduction. It is also possible to provide a sufficient heat dissipation effect and achieve sufficient robustness and weight saving even when connecting large-sized cylindrical batteries.

The invention relates to the technical field of wall tile pasting equipment, and discloses a wall tile pasting machine. The machine comprises a left-right moving frame, a front-back moving frame and alifting frame, wherein the front-back moving frame moves left and right along the left-right moving frame, and the lifting frame moves forward and backward along the front-back moving frame. The lifting frame is provided with a tile pasting mechanism which ascends, descends and moves along the lifting frame. The tile pasting mechanism comprises a base plate, isolation strips and suction cups, wherein the side, facing the wall surface, of the base plate is a tile pasting surface, the isolation strips are arranged on the base plate, a plurality of wall tile placement areas are formed on the tile pasting surface of the base plate, and the suction cups used for adsorbing wall tiles are arranged in the wall tile placement areas. According to the wall tile pasting machine, the tile pasting quality can be guaranteed, the tile pasting position can be adjusted according to the tile pasting progress, time and labor are saved, multiple tiles are pasted at a time, and the working efficiency is improved.