593results about How to "Reduce processing difficulty" patented technology

The invention discloses a molecular film type automotive nitrogen and oxygen separation device which comprises a turbocharger, a nitrogen and oxygen separator, a gas inlet valve, a gas outlet valve, a negative pressure pump and an electric control throttling valve. The turbocharger is driven by a turbine in an automobile turbocharger, so that the air is compressed to be conveyed to two paths of the nitrogen and oxygen separation device, the nitrogen and oxygen separation device can separate oxygen from the air, the air with high oxygen content is output, and the air is supplied to an engine for use through the gas outlet valve. The two paths of the nitrogen and oxygen separation device work alternately, when the temperature of the two paths of the nitrogen and oxygen separation device is too high to influence oxygen production efficiency, a main air inlet pipeline is opened to provide air normally by controlling the opening degree of the electric control throttling valve, and thus the phenomena of gas circuit plugging and engine stalling are avoided. According to the automotive nitrogen and oxygen separation device, the two branch paths work alternately, high concentration oxygen can be supplied to the engine continuously so that fuel can burn and act, and the burning utilization rate of the fuel is improved.

The invention discloses a rectangular waveguide sealing window structure for realizing broadband transmission, which belongs to a microwave signal detection device and comprises a first rectangular waveguide cavity, a second rectangular waveguide cavity and a rectangular dielectric block arranged between the first rectangular waveguide cavity and the second rectangular waveguide cavity, the first rectangular waveguide cavity comprises a first rectangular waveguide shell and two first stepped transition structures embedded into an inner cavity of the first rectangular waveguide cavity, and the second rectangular waveguide cavity comprises a second rectangular waveguide shell and two second stepped transition structures embedded into the second rectangular waveguide shell. The opposite side faces of the two first stepped transition structures and the two second stepped transition structures are provided with identical tooth-shaped steps, the second rectangular waveguide shell is further internally provided with an installation cavity communicated with the second I-shaped sliding groove, the two waveguide cavities are connected through screws, and the rectangular dielectric block is fixedly installed in the installation cavity. The vertically symmetrical multi-stage stepped impedance matching network provided by the invention realizes excellent transmission performance with low voltage standing-wave ratio in a wide frequency band, and is suitable for a millimeter wave system with high power and wide frequency band.

According to the auxiliary positioning clamp for milling the exhaust manifold, an inclined positioning supporting device is arranged on the right side of the upper end face of a bottom plate, and when the inclined positioning supporting device is connected with a flange at the lower end of a middle pipe of the exhaust manifold in a matched mode, an upper end pipe of the exhaust manifold is in a horizontal state, and a pipe opening in the elbow end of the upper end of the exhaust manifold is parallel to the corresponding side wall face of the bottom plate; the left side of the upper end face of the bottom plate is provided with a positioning and supporting assembly used for supporting the elbow end of the upper end of the exhaust manifold and determining the center position of a pipe opening, and the positioning and supporting assembly is matched with a pressing assembly arranged on the upper end face of the bottom plate to fixedly support the elbow end of the upper end of the exhaust manifold on the bottom plate. Initial positioning conditions are provided for the center of a pipe opening of the upper end pipe of the exhaust manifold, reliable supporting and fixing of the exhaust manifold on the bottom plate are achieved, the defect that a traditional clamp is high in requirement for machining equipment is overcome, machining cost is reduced, the exhaust manifold can be accurately and rapidly positioned and clamped, production cost is reduced, and the machining efficiency is improved. Equipment limitation is eliminated, and the production requirements of parts are met.

This utility model discloses a cleaning device for recycled concrete production, relating to the field of recycled concrete technology. Addressing the problems raised in the background art, the following solution is proposed: a cleaning tank, a feed hopper fixedly connected to the upper surface of the cleaning tank, a drive assembly fixedly connected to the front of the cleaning tank, a cleaning assembly fixedly connected to the right side of the cleaning tank, and a separation assembly fixedly connected to the lower surface of the cleaning tank. Through the coordinated arrangement of the drive assembly and the cleaning assembly, this utility model allows the drive motor and connecting shaft to drive a swing wheel to swing left and right significantly during use. This enables the recycled concrete to continuously move and change position within the swing wheel, preventing the accumulation of recycled concrete and thus avoiding cleaning dead zones. Furthermore, two cleaning nozzles pass through a wire mesh to rinse the moving recycled concrete, greatly increasing the contact area between the recycled concrete and water, thereby improving the cleaning effect.

The utility model discloses a blade machining positioning device, and relates to the technical field of blade machining. The blade machining device comprises a workbench and further comprises a clamping part, a clamping part, a clamping part and a clamping part, and the clamping part is arranged above the workbench and used for clamping a blade needing to be machined; the adjusting part is mounted in the workbench and is used for adjusting the angles of the clamping part and the blade clamped on the clamping part; wherein the top of the adjusting part extends out of the workbench and is fixedly connected with the clamping part, the right side of the adjusting part extends out of the workbench, the clamping part comprises two positioning assemblies, and the two positioning assemblies are both installed at the top of the adjusting part. According to the blade machining and positioning device, the clamping part is arranged, so that the problem that in the using process of an existing blade machining and positioning device, a blade needing to be positioned is inconvenient to clamp, the blade is prone to displacement in the follow-up machining process, and normal machining of the blade is affected is solved.

The utility model relates to a modularized self-cleaning electrocatalytic oxidation electrode which comprises an electrocatalytic oxidation electrode bar and a modularized independent cleaning assembly, according to the technical key points, the modularized independent cleaning assembly comprises a scraping ring sleeving the outer side of the electrocatalytic oxidation electrode bar, an annular positioning seat connected with the upper part of the periphery of the scraping ring, an annular liquid cavity arranged on the lower surface of the lower part of the annular positioning seat, a plurality of nozzles uniformly arranged on the inner periphery of the annular liquid cavity, and a liquid inlet arranged on the periphery of the annular liquid cavity; the nozzle faces the center line of the electrocatalytic oxidation electrode bar, the lower end of the scraping ring shrinks and is attached to the outer wall of the electrocatalytic oxidation electrode bar, a fixing hole set is formed in the edge of the annular positioning base, and the position, extending to the outer surface of the electrocatalytic oxidation electrode bar, of the center line of the nozzle is lower than the height of the lower end of the scraping ring. The modular independent cleaning assembly is adopted, on one hand, the machining difficulty and the assembling difficulty are reduced, and on the other hand, the cleaning effect is enhanced.

The present application relates to a kind of core-pulling module of plastic forming die, including inclined top module, inclined top module includes U-shaped seat block, the directional plate of transverse fixed at the top opening of U-shaped seat block, oblique square column is connected in the directional plate and is active, and the traction strip that is transverse and is arranged in the inside of U-shaped seat block to have front and rear translation function and is connected with the lower end of oblique square column;Inclined top module further includes rotatable connection in the inside rear side of U-shaped seat block transmission gear and rotatable connection in the inside of U-shaped seat block and meshing in the front upper of transmission gear reversing gear;Inclined top module further includes vertical arrangement and meshing in the rear of transmission gear driving rack;The present application reduces both the complexity of the structure of mould, and the processing and manufacturing difficulty of mould, to reach the effect of time-saving and labor-saving and reduce manufacturing cost.

The invention discloses an antenna and terminal equipment, the antenna comprises a first radiator and at least one second radiator, and the first radiator generates a first resonant frequency; each of the at least one second radiator and the first radiator are arranged in an outer shell and are coupled in a suspended manner to form resonance, the at least one second radiator and the first radiator resonate to generate at least one second resonant frequency, and the second resonant frequency is different from the first resonant frequency. According to the embodiment of the invention, the second radiating body which is suspended relative to the first radiating body is adopted, so that the structural complexity of the first radiating body can be reduced, and the processing difficulty of the first radiating body is reduced; the first radiating body generates the first resonant frequency, and the second radiating body and the first radiating body generate the second resonant frequency, so that multiple functions of the antenna can be conveniently realized, the antenna performance is improved, and the application range is widened.

The invention relates to the technical field of silicon-based OLED (Organic Light Emitting Diode) product preparation processes, and discloses a process method for improving Pad opening of a silicon-based OLED, which comprises the following steps of: treating an initial substrate; depositing an organic material; packaging with a thin film; coating a photoresist; etching the Pad region; and demolding the substrate. According to the invention, the evaporation mask is designed, during the evaporation process, the AA area and the Pad area are evaporated with the organic material at the same time, during film packaging of the Pad area, the organic layer material is located between the packaging layer and Pad metal, the organic layer material is relatively loose and plays a buffering role during dry etching, the process window of the dry etching process is enlarged, and the production efficiency of the dry etching process is improved. The problems of unclean dry etching and over etching are avoided, the process difficulty of the dry etching process is reduced, and the mass production yield and reliability of the device are improved.

The utility model discloses an upper cross beam structure of a closed four-point high-speed precision press, which comprises an upper cross beam, the upper cross beam is of a symmetrical structure, two ends of the upper cross beam are respectively provided with a mounting hole, each mounting hole is respectively provided with a first sliding bearing seat, and at least one mounting hole is provided with a flywheel seat; a first installation seat is arranged in the middle of the upper cross beam, a second installation seat is detachably arranged on the first installation seat, lower bearing seats are arranged at the two ends of the first installation seat respectively, upper bearing seats are arranged at the two ends of the second installation seat respectively, and each upper bearing seat and the corresponding lower bearing seat form a second sliding bearing seat. According to the technical scheme, the upper cross beam is of a unique split type structure, and the first installation base and the second installation base are connected through the attached installation planes and the bolts. On one hand, machining is facilitated, and the overall machining difficulty is reduced; and on the other hand, when the precision deviation of the hole system is detected, fine adjustment can be carried out by repairing the mounting plane.

This invention discloses an insulating encapsulation structure and connection method for a probe temperature sensor, relating to the field of temperature sensor technology. The insulating connection bracket has an outer insulating and thermally conductive protective layer, and contains insulating adhesive and a temperature-sensing component. The specific implementation is as follows: an insulating layer assembly, a built-in snap-fit ​​structure within the insulating connection bracket, and an eccentric cavity for housing the temperature-sensing component. A thermistor glass body is used as the insulator. In the insulation process, direct contact between the glass body and the inner wall of the bracket reduces one useless insulating layer. The cavity formed by the end of the insulating connection bracket and the insulating layer assembly houses the temperature-sensing component. The cavity contains a clearance structure for the thermistor pins and multiple layers of insulation between the pins and the conductive copper wires. A fluid insulating adhesive is used, and then the insulating connection is cured. Finally, the encapsulation is placed inside a metal shell containing insulating adhesive and cured, thus forming multiple layers of effective insulation and sufficient safe insulation thickness between the thermistor conductive pins and the metal shell.

The embodiment of the present disclosure provides a preparation method of a semiconductor device, which comprises: providing a substrate, the substrate having a shallow trench isolation structure therein; forming a word line trench in the shallow trench isolation structure, the word line trench being provided with a gate insulation layer on the sidewall; forming a titanium nitride blocking layer, the titanium nitride blocking layer covering the surface of the gate insulation layer; and depositing a metal molybdenum gate, the metal molybdenum gate being selectively deposited on the titanium nitride blocking layer. The preparation method utilizes the property of selective deposition of the metal molybdenum gate, so that the metal molybdenum gate is only deposited on the titanium nitride blocking layer and is not deposited on other structures, thereby eliminating the need for an additional etching back step, simplifying the preparation process, reducing the process difficulty, and the resistivity of the metal molybdenum gate is lower than that of a TIN / W film, which is conducive to reducing the gate resistance and improving the performance of the semiconductor device.

A method for withering tea leaves, using withering equipment including a fan (2), a temperature sensor (3), a control box (5), a heating tube (7), and a frame (8), wherein a perforated plate (1) is arranged in the frame (8) to form a trough, and a guide plate (4) is set below the perforated plate (1). The method includes the following steps: starting the control box (5) and measuring and determining the correspondence between the wind speed and the frequency of the fan (2) in segments; spreading the fresh tea leaves flat on the perforated plate (1), controlling the thickness of the spread tea leaves to ensure uniform spreading; setting the direction and wind speed parameters of the fan (2), and starting the fan (2) and the heating tube (7); repeating the blowing process of the fan (2) and the heating process of the heating tube (7) according to the direction and wind speed parameters set in step three until withering is completed. This achieves parameterized and precise control of the withering process.

The present application relates to the technical field of archery equipment, and particularly relates to a metal mixed carbon fiber arrow shaft, which comprises a middle carbon fiber pipe, a head stainless steel pipe, a tail metal pipe and a solid connecting piece, the head stainless steel pipe is arranged at the front end of the middle carbon fiber pipe, the tail metal pipe is arranged at the rear end of the middle carbon fiber pipe, and the two are connected and fixed through the solid connecting piece arranged in the middle carbon fiber pipe, and the outside is wrapped with carbon cloth and is formed through high-temperature curing. The present application adopts a segmented metal mixed structure, replaces a long-size metal inner core with a short metal accessory matched with a carbon fiber main pipe, and greatly reduces the difficulty of straightness control. The thickened head stainless steel pipe effectively bears the impact force, the solid connecting piece is in surface contact with the inner wall of the carbon pipe to disperse the stress, and the service life of the arrow shaft is significantly prolonged. The present application has reasonable structure, low cost and high efficiency, and is suitable for manufacturing various archery equipment.

This utility model provides a car roof handle and vehicle based on a four-bar linkage, belonging to the field of automotive parts technology. It includes: a base with a proximal hinge and a distal hinge, located at different positions along the depth of the base; one end of a first rocker arm hinged to the proximal hinge of the base, and the other end of the first rocker arm hinged to a connecting arm; one end of a second rocker arm hinged to the distal hinge of the base, and the other end of the second rocker arm hinged to a connecting arm; the connecting arm is hinged to the handle body. The first rocker arm, the second rocker arm, the connecting arm, and the base constitute a four-bar linkage. The advantages of this utility model are: the four-bar linkage allows for extension and retraction between the handle body and the base, enabling the handle body to be retracted and close to the base when not in use, and extended when in use, saving interior space and adapting well to bumpy driving environments.

This utility model discloses a light-powered hair styling device. The device includes a main unit, a curling tube, a light-emitting lamp, and a PCBA control board. The curling tube is connected to the main unit, and the light-emitting lamp is located inside the curling tube. The light-emitting lamp is connected to the PCBA control board via a conductive wire, and an isolation bracket is provided between the light-emitting lamp and the conductive wire. By adding an isolation bracket between the light-emitting lamp and the conductive wire, this utility model utilizes the physical barrier effect of the isolation bracket to block the direct transmission of infrared rays emitted by the light-emitting lamp to the high-temperature radiation conductive wire. The isolation bracket forms a "radiation barrier," preventing high temperature and infrared rays from directly acting on the outer sheath of the conductive wire, delaying the aging, softening, and burning of the outer sheath, effectively avoiding safety accidents such as short circuits and electric shocks, and improving the long-term reliability of the light-powered hair styling device.

The application discloses a non-magnetic ring proportional pressure reducing electromagnetic valve for a hydraulic system, a first through hole, a second through hole and a first blind hole are formed in the valve body, a pressure relief hole and a pressure inlet hole are formed in the side wall of the valve body, the pressure relief hole and the pressure inlet hole are communicated with the first through hole, a working hole is radially formed in the side wall of the valve body, the inner end of the working hole is communicated with the first through hole, and the outer end extends to the outer surface of the valve body, a valve core is axially movably installed in the first through hole, and a fifth outer groove and a first annular protrusion are arranged on the outer periphery of the valve core, the first annular protrusion forms an annular gap with the inner wall of the first through hole, a coil assembly is arranged in the yoke, a stop iron is fixedly arranged in the yoke through a mounting plate, and a magnetic circuit optimization structure is arranged on the outer surface of the stop iron. The magnetic circuit optimization and the multiple anti-sticking and friction-reducing designs are integrated, the independent magnetic ring is cancelled, the structure is simplified, the electromagnetic force, the response speed and the service life of the electromagnetic valve are comprehensively improved, the processing difficulty is obviously reduced, and the application range of the electromagnetic valve is widened.

The display device has a plurality of curved display regions, the plurality of curved display regions are spliced into a special-shaped display region, and each curved display region includes a plurality of spliced display units. Each display unit is a triangular structure, the radius of curvature of each display unit in the curved display region is equal, each curved display region has a plurality of vertices, and can enclose a regular polygon. In the application embodiment, a group of display units are spliced to form a curved display region, and a plurality of curved display regions are spliced into a special-shaped display region, so as to realize the display of a special-shaped picture, improve the picture display effect, and make the user have better immersion. In addition, the display unit is arranged as a triangular structure, so as to reduce the number of types of display units, reduce the mold opening cost of the display unit, and reduce the process difficulty of the display device.

This application discloses a method, apparatus, device, and computer-readable storage medium for image foreground segmentation, particularly relating to foreground segmentation of circular regions in images displaying circular regions of different colors. The method establishes a labeled information database based on the circular region image with labeled information, processes the information to obtain a threshold range corresponding to the target pixel region in the color space, and then accurately separates the monochrome circular particle foreground images from the user-provided image based on this threshold range. Each monochrome particle image is segmented separately to obtain monochrome particle foreground segmentation results. Finally, the multiple monochrome circular particle foreground segmentation results are fused to obtain the foreground segmentation result of the multi-dimensional circular region image. This method has higher recognition efficiency and better noise tolerance compared to the traditional watershed algorithm.

The utility model discloses a laser rangefinder for lifting a table board, which comprises a shell and a laser ranging module arranged in the shell, the shell is provided with a probe hole for laser to penetrate through, the shell is also provided with a notch part, the inner side of the notch part comprises a first reference surface and a second reference surface which extend in different directions, and the first reference surface and the second reference surface are arranged on the shell. The extension direction of the first reference surface is perpendicular to the extension direction of the probe hole. According to the lifting table, the ground clearance of the lifting table board can be accurately measured through the laser range finder, whether the lifting table board is inclined or not can be conveniently judged, and the laser range finder can be rapidly positioned on the lifting table board so that measurement can be conveniently conducted. In addition, the utility model further discloses an electric lifting table provided with the laser range finder.

The application discloses a kind of coherent non-local terahertz wave front regulation and control metasurface device use method, it is related to terahertz device technical field.The specific steps of the method are as follows: S1, circularly polarized terahertz waves of opposite rotation are incident from the two sides of coherent non-local terahertz beam deflection metasurface device along normal line;S2, the relative distance of two terahertz waves to metasurface is adjusted, so that the optical path difference is the odd multiple of half wavelength;S3, the transmitted wave generated by the plane wave emitted by one wave source through metasurface is coherent with the reflected wave generated by the plane wave emitted by another wave source through metasurface, and the coherent constructive diffraction wave can be observed at the target diffraction angle.The application integrates efficient circularly polarized wave chirality conversion, sensitive spectral selection, wave front regulation and control and active coherent tuning function of output energy into one, and is simple in design and easy to process, and can be widely applied in the field of terahertz imaging.

The invention relates to the technical field of secondary battery cover plates, in particular to a secondary battery cover plate and a production process thereof, and the secondary battery cover plate comprises a light aluminum plate which is provided with a through hole along the thickness direction; the pole body is positioned in the through hole, and the outer wall is in insulated connection with the light aluminum plate; according to the secondary battery cover plate and the production process thereof, the pole body, the upper plastic, the sealing ring, the light aluminum plate, the lower plastic cover plate and the metal fixing piece are sequentially stacked and are assembled in a single welding manner, so that the operation is simple and time-saving, the product is firm and reliable, the production cost is reduced, and the subsequent automatic assembly work is facilitated; the pole body and the metal fixing piece are made of the same material, so that the integration is better during welding, and the process difficulty of welding is reduced; the metal fixing piece is arranged at the lower mounting part and the lower plastic cover plate in an embedded manner, so that the welding effect is improved, the metal fixing piece and the lower surface of the pole body are subjected to fusion welding, and welding slag cannot fall into the electrode to cause short circuit in the use process of the electrode.

The invention discloses a preparation method of high-purity 2-(diethylamino) acetamide, which comprises the following steps: S1, carrying out amine nucleophilic substitution reaction on methyl chloroacetate and diethylamine in an alkaline environment to obtain 2-diethylamino methyl acetate; s2, carrying out amine esterification reaction on methyl 2-diethylaminoacetate and ammonia water in the presence of a catalyst, extracting with an organic solvent after the reaction is finished, and separating to obtain an organic phase containing 2-diethylaminoacetamide; s3, washing the organic phase with water, and then concentrating to recover the organic solvent, so as to obtain a concentrated residue; s4, carrying out high-vacuum rectification on the concentrated residues, so as to obtain white solid 2-diethylaminoacetamide; according to the present invention, the cheap and easily available raw materials are adopted, the three-step reaction route is short, the operation condition is mild, the catalyst and the ammonia are supplemented to the water phase after the amine esterification reaction, and then the water phase is recycled, such that the generation of the high ammonia nitrogen wastewater is effectively reduced, and the prepared 2-(diethylamino) acetamide has characteristics of high purity and good yield.

This invention provides a projection lens. The projection lens includes a lens group comprising at least eight lenses, which, from a first side to a second side, are sequentially: a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with negative optical power, a fifth lens with positive optical power, a sixth lens with optical power, a seventh lens with optical power, and an eighth lens with optical power. At least one group of lenses from the fourth to the eighth lens is cemented together to form a cemented doublet lens or a cemented triplet lens. The ratio between the combined focal length of the cemented doublet lens and the focal length of the second lens group is greater than or equal to 1 and less than or equal to 8; or, the ratio between the focal length of the cemented triplet lens and the focal length of the second lens group is greater than or equal to 0 and less than or equal to 14. This invention solves the problem in existing projection lenses where it is difficult to simultaneously achieve both high-quality projection and miniaturization.

The utility model discloses a main shaft box structure for lathe main shaft cooling, main shaft box body, the axle cavity on main shaft box body is connected through bearing with main shaft, the inner peripheral wall of axle cavity is equipped with medium flow structure, and the beginning of medium flow structure is communicated with at least one medium import end that is equipped with on main shaft box body, and the end is communicated with at least one medium export end that is equipped with on main shaft box body. The utility model can adopt the mode of oil cooling or water cooling, and the heat of main shaft is accelerated to radiate, and better heat dissipation effect can be played together with air cooling. The main shaft box body adopts symmetrical structure, and the structure is simple, and the commonality is strong, and the problem of uneven temperature distribution when temperature rise is solved to a certain extent, thereby reducing the thermal deformation of main shaft.

The application discloses a MgO-based catalyst synthesis method and application thereof, relates to the technical field of catalyst preparation, and comprises the following steps: dissolving magnesium salt, lanthanum salt, cerium salt, calcium salt and nickel salt in deionized water, stirring uniformly to obtain a metal salt solution; adding citric acid into the metal salt solution and stirring intensively until uniform to form a mixed gel; pouring the mixed gel on a medium-speed qualitative filter paper, transferring and drying to obtain a dry gel; roasting the dry gel with the filter paper, grinding the roasted dry gel with a mortar to obtain a grinding powder; and transferring the grinding powder to a muffle furnace for calcination to obtain a uniform composite metal oxide catalyst; the MgO-based catalyst is prepared by combining the dry gel method with the combustion decomposition method, the preparation process is simple, the conditions are easy to control, the preparation process is easy to repeat, the product pollution risk caused by the introduction of sodium hydroxide precipitator is eliminated, the preparation cost and process difficulty are reduced, and the method is suitable for large-scale production. + ​

The invention relates to a processing technology of an optical waveguide structure and a preparation method of an optical waveguide sheet, and the processing technology of the optical waveguide structure comprises the steps: processing a substrate, and carrying out the cleaning pretreatment of a substrate layer; a transition layer is deposited, specifically, the transition layer is deposited on the surface of the pretreated substrate layer, and the transition layer comprises at least one first bonding element bonded with the substrate layer and at least one second bonding element bonded with the optical waveguide layer; and optical waveguide layer deposition: depositing an optical waveguide layer on one side, far away from the substrate layer, of the transition layer, so that the refractive index of the optical waveguide layer is greater than that of the transition layer. The three layers of structures are overlapped to form the optical waveguide sheet, so that the technical effect of reducing the processing difficulty of the optical waveguide sheet is achieved.

The present application relates to a kind of rotary compressor, gas compression system, refrigeration system and heat pump system, rotary compressor includes cylinder, piston, crankshaft, swing block and sliding vane, the compression chamber and swing groove are arranged inside cylinder, piston is arranged in the compression chamber, swing block is rotationally arranged in swing groove, sliding slot is arranged on swing block, sliding vane is slidably arranged in sliding slot, and one end of sliding vane and the side wall of piston abut, the other end between the inner side wall of the cylinder is provided with the driving assembly for driving the one end of the sliding vane and the side wall of the piston abut, crankshaft is linked with piston, and drives piston to eccentric rotation in the compression chamber, swing block is synchronously swung back and forth in swing groove. By the sliding vane and the rocker block of prior art are designed as a whole, the swing amplitude of sliding vane and swing block can be greatly reduced, the friction power consumption is effectively reduced, and the cold leakage between sliding vane and piston can be reduced, the lubrication state between swing block and cylinder is improved, and the friction loss between sliding vane and cylinder is reduced.

This utility model discloses a press-fit blind hole nut structure, belonging to the field of press-fit nut technology. It includes a first retainer and a second retainer, a nut component, and a fixing bolt. The fixing bolt is installed at the inner center of the nut component. The nut component includes a toothed sleeve and a nut sleeve. The toothed sleeve is fixedly installed on the upper outer surface of the nut sleeve. A toothed portion for riveting metal plates is provided at the center of the upper outer surface of the toothed sleeve. The toothed portion has an overall toothed ring structure. The fixing bolt and the toothed sleeve, as well as the fixing bolt and the nut sleeve, are all connected by threads. Several sets of teeth are distributed in a ring on the outer surface of the toothed portion, with one end of each tooth having a pointed shape. This provides a press-fit rotation limiting structure, preventing synchronous rotation of the nut during subsequent bolt installation after it is connected to the sheet metal material. This allows the nut and bolt to be tightened to the maximum extent, improving their performance.

The application provides a fluid power actuator, comprising a piston cylinder, a piston arranged in the piston cylinder and capable of reciprocating along the axis of the piston cylinder, a piston rod connecting the piston and the outside of the piston cylinder, and a cylindrical piston sleeve; the outer edge of the cross section of the piston cylinder perpendicular to the axis of the piston cylinder comprises a straight edge; the piston sleeve is sleeved on the outside of the piston cylinder from the first piston cylinder end cover; a first sealing element matched with the inner wall of the piston sleeve is arranged on the outer wall of the piston cylinder and / or the first piston cylinder end cover; the first piston cylinder end cover and the bottom part of the cylinder form a first fluid driving cavity; and the piston and the second piston cylinder end cover form a second fluid driving cavity. The fluid power actuator can be widely applied to the field of fluid pressure transmission.