73results about How to "Stable function" patented technology

The invention belongs to the technical field of underground engineering supporting, and particularly discloses a shear-resistant variable-resistance yielding anchor rod capable of measuring pretightening force and a using method thereof.The shear-resistant variable-resistance yielding anchor rod is provided with an anchor rod body, the anchor rod body comprises a head section, a middle standard section and a tail section which are sequentially connected, the head section comprises a head end rod body, the head end rod body is provided with a piston head, and the piston head is sleeved with a sleeve; the sleeve and the piston head form a piston structure. A piston cylinder structure is arranged on the middle standard section and is used for adapting to shear deformation caused by dislocation and slippage deformation of a rock stratum. The tail section comprises a first rod body and a second rod body, the tail end of the second rod body is arranged in the first rod body in a penetrating mode along the rod length of the first rod body, connected with the elastic piece and capable of sliding in the rod length direction of the first rod body, and the tail end of the second rod body is provided with an outer extension and capable of feeding back deformation of the elastic piece. The problem that a common anchor rod cannot meet the requirement for large deformation of surrounding rock is solved, the problem that an existing anchor rod is prone to being cut off under transverse displacement of a rock stratum is solved, and meanwhile the pretightening force can be measured.

The invention relates to the technical field of transportation or storage devices, in particular to a carrying robot for stacking warehousing, which comprises a machine main body and a lifting mechanism arranged on the machine main body and used for lifting goods to a preset height, the lifting mechanism is provided with two supporting parts, each supporting part comprises a supporting shaft group and a belt arranged outside the supporting shaft group in a sleeving manner, each supporting shaft set is provided with a supporting end and a compensation end perpendicular to the supporting end, the supporting ends of the two supporting shaft sets are arranged in the same supporting plane and arranged in the supporting plane in a telescopic mode in the first direction, and the compensation ends are constructed to be capable of synchronously stretching out and drawing back in the second direction when the supporting ends stretch out and draw back. Therefore, the overall length of the supporting shaft group is kept unchanged. By arranging the supporting shaft set structure with the telescopic supporting end and the compensation end, the stable lifting and placing functions of goods under the condition that no tray exists are achieved, the problem that a traditional carrying robot depends on the tray is solved, and the storage cost is reduced.

The invention discloses a chip mounting rotating mechanism, a chip mounter and a chip mounting method, and belongs to the technical field of semiconductor chip mounting. Comprising a working frame and a chip mounting assembly, the chip mounting assembly comprises an adsorption part, and the adsorption part is communicated with external gas equipment through a gas circuit structure; the rotating assembly is connected to one side of the working frame, and the rotating assembly is used for driving the adsorption part to rotate; the patch assembly further comprises a first connecting piece used for being connected with the adsorption piece, and a second connecting piece used for being connected with the adsorption piece. The second connecting piece is used for being connected with a lifting mechanism; and when the lifting mechanism drives the base material adsorbed by the adsorption piece to abut against the base plate, the second connecting piece can slide relative to the first connecting piece. According to the technical scheme, through the sliding effect of the first connecting piece and the second connecting piece, the adsorption piece can apply a relatively constant pressure to the base material after being in contact with the base material, the height difference of different base material thicknesses is counteracted, and the problem that the chip mounter is not convenient to use due to the influence of the thickness of the semiconductor base material is solved.

The invention relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device which comprises a base, a damping cover is fixedly connected to the surface of the base, two kirschner wire bodies are movably inserted into the base and the damping cover, a mounting groove is formed in the base, and the kirschner wire bodies are arranged in the mounting groove. A kirschner wire locking block is arranged in the center of the interior of the mounting groove, a bolt mounting block is movably connected to one side of the kirschner wire locking block, and a kirschner wire locking bolt is movably connected to one side of the bolt mounting block. The kirschner wire tracer is provided with a base, a kirschner wire body, a mounting groove, a kirschner wire locking block, a bolt mounting block, a kirschner wire locking bolt, a holder, a tracer body, an insertion hole, a movable groove, an adjusting rolling ball, an adjusting rod, a tightening seat, a tightening bolt, a second insertion groove, a positioning pin, a pressure spring, a snap spring and a thrust bearing. The device can be used for installing and fixing the tracer which is simple in structure, low in production and manufacturing cost, high in stability and not prone to damage.

The invention discloses a variable exhaust port device of a two-stroke engine, and aims to overcome the defects that in the prior art, although an exhaust hole with a variable opening size is formed in the two-stroke engine, the exhaust efficiency of waste gas is still limited and needs to be further improved when the engine runs at a high speed. According to the technical scheme, a main exhaust hole and an auxiliary exhaust hole are formed in the inner side wall of an air cylinder body, a main exhaust valve for controlling the opening size of the main exhaust hole is arranged in the main exhaust hole, and an auxiliary exhaust valve for controlling the opening size of the main exhaust hole is arranged in the auxiliary exhaust hole; the main control assembly controls the opening size of the main exhaust valve; the auxiliary assembly is connected with the main control assembly and controls the opening size of the auxiliary exhaust hole; wherein the auxiliary exhaust valve is in a normally closed state, and the main control assembly drives the auxiliary assembly and controls the auxiliary exhaust valve to open the auxiliary exhaust hole.

The application provides an antibacterial neural electrode based on a high-surface-potential zirconium oxide layer and a preparation method thereof. The electrode comprises, from bottom to top, a bottom zirconium oxide film layer, a first insulating layer, a metal layer, a second insulating layer, a top zirconium oxide film layer and an electrode modification layer. A distal end of the metal layer is partially exposed to form an electrode point, and the electrode modification layer covers the electrode point. The bottom zirconium oxide film layer and the top zirconium oxide film layer are subjected to high-surface-potential treatment and exhibit a positive surface potential in a physiological environment. The positive surface potential can destroy the cell membranes of bacteria with negative charges through electrostatic action after the neural electrode is implanted in vivo, and inhibit the formation of microglial cells and astrocytes. The damage to the membranes of mammalian cells (such as neurons) with neutral electricity is extremely small. The application realizes active antibacterial function through the high-surface-potential zirconium oxide film layer, ensures long-term effective contact between the electrode and neurons, and thus realizes high-quality, long-term stable electrophysiological recording and stimulation function of the neural electrode.

The invention discloses a display equipment control method, a related device and display equipment. The specific display equipment control method can be used for first display equipment. The first display device may include a processor, a controller, and a network module; wherein the processor is connected with the controller, and the controller can comprise a first communication protocol. Therefore, according to the embodiment of the invention, remote control on the first display equipment can be realized based on the IP data packet, so that the problem that remote control can only be realized by receiving a magic data packet in related technologies is solved, and network access transmission is performed through the IP address, so that the reliability is high, the function is stable, cross-network-segment use can be realized, and the user experience is improved. And the situation that the wake-up packet is intercepted or filtered by network equipment such as a router is avoided.

This invention relates to the field of condensate recovery technology, specifically a closed-loop condensate recovery device, comprising a tank with a water outlet pipe at the bottom. The tank is divided into three zones—a central steam buffer zone, a lower condensate collection zone, and an upper negative pressure condensation zone—by two horizontal baffles. This closed-loop condensate recovery device eliminates the need for additional power components such as pumps. It relies on the downward pressure difference of the condensate in the negative pressure condensation zone and the negative pressure generated by steam condensation as the drainage driving force. It fully utilizes the system's own energy, eliminating dependence on external power and significantly reducing operating energy consumption. The condensate introduced by the downward pressure drainage pipe creates a downward impact, which, combined with the negative pressure introduced by the negative pressure venting pipe, forms a dual drainage drive, providing stronger power and higher efficiency than traditional single gravity drainage. Simultaneously, it drives the condensate in the pipe to repeatedly flush, comprehensively covering the entire pipe area and thoroughly removing impurities and silt from different sections, offering better anti-clogging performance than unidirectional disturbance.

The embodiment of the present invention discloses a hand-pressed coffee machine, which includes: a machine body, a container is arranged on the upper part of the machine body, a brewing chamber is formed on the lower part of the machine body, a through hole connecting the container and the brewing chamber is formed in the middle part of the machine body, a water-insertion needle is arranged in the through hole, and a one-way valve assembly is arranged between the container and the water-insertion needle or in the water-insertion needle; the bottom of the container has a connecting hole connected to the water-insertion needle and is provided with a heating element for heating liquid; a hand-pressed pump is arranged in the container, and the upper part of the hand-pressed pump extends out of the container; the lower part of the hand-pressed pump has a joint valve, which is arranged in the connecting hole of the container, and has a water inlet connected to the container and a water outlet connected to the water-insertion needle; a coffee box is arranged in the brewing chamber. The hand-pressed coffee machine of the embodiment of the present invention has a clever design, a simple principle, convenient operation, and stable function. In addition, due to the heating function, its portability is greatly improved; there is no need to carry a container for storing hot water or a machine for heating water.

The utility model discloses a stamping processing waste material cleaning collection device relates to stamping waste material collection technical field, including punch press platform, the punch press platform lateral wall bottom symmetry is equipped with limiting bolt, the punch press platform bottom and sliding connection in limiting bolt outer wall is equipped with the wheel removal outer box, the wheel removal outer box inner wall sliding connection has the material receiving inner box, the material receiving inner box bottom is equipped with the material discharge opening, the material discharge opening inner wall sliding connection has the opening cover, one end lateral wall of opening cover is equipped with the inclined slide, the inclined slide top is equipped with the side baffle, one end symmetry of opening cover top is equipped with the connecting column, the other end lateral wall of opening cover is equipped with the limiting connecting plate symmetry. The utility model discloses in combination linear sliding and rotation design, further increase convenient material discharge design, so that the device when using, and the user can effectively discharge and clean the waste material in the box.

The present invention proposes a universal monitor platform for microwave landing equipment and precision ranging equipment, comprising: an analog input channel is connected to a dual-channel A / D analog-to-digital converter, the dual-channel A / D analog-to-digital converter is connected to an FPGA chip in a data processing module, the FPGA chip and the DSP chip in the data processing module are connected to a storage call module and a time module through a bus; the DSP chip is connected to a CAN communication module; the dual-channel A / D analog-to-digital converter comprises: an A / D chip, a peripheral resistor, a capacitor and a resistor array, the A / D chip is connected to the resistor array, the peripheral resistor performs function configuration on the A / D chip, and the capacitor is used for powering the A / D chip and filtering the reference voltage; the power supply circuit comprises: a fusible fuse component and a power chip component, wherein the power chip component is connected to the fusible fuse component, the power chip component performs power conversion on the voltage connected from the fusible fuse component, and then the converted voltage is supplied to the corresponding chip of the monitor.

This invention relates to the interdisciplinary field of cell biology, experimental oncology, and translational medicine, specifically to a cancer-associated fibroblast cell line, its construction method, and its applications. This invention fills the research gap in mouse-derived oral squamous cell carcinoma-associated fibroblast cell line models and provides a method for constructing such a cell line. Through the inverted adherent culture and enzymatic digestion methods of this invention, a mouse-derived oral squamous cell carcinoma-associated fibroblast cell line with a clear origin, high purity, and long-term phenotypic and functional stability can be obtained. This allows for the establishment of a cryopreservable and resuscitable mouse oral squamous cell carcinoma-associated fibroblast cell bank, providing technical support for research related to the tumor microenvironment and immunotherapy.

The invention discloses a fully plastic pistol spray pump, comprising a pump body, a lock cover connected to the lower part of the pump body, a liquid spray channel arranged in the pump body, a nozzle arranged at the outlet of the liquid spray channel, a liquid outlet channel and a liquid inlet channel separated up and down arranged in the pump body, wherein the liquid outlet channel is connected with the liquid spray channel, a liquid introduction cavity is arranged at the sides of the liquid outlet channel and the liquid inlet channel, the upper part of the liquid introduction cavity is always connected with the liquid outlet channel through a normal opening, a suction plug is arranged in the liquid introduction cavity, a trigger which can drive the suction plug to make left and right piston movement in the liquid introduction cavity is hingedly connected to the pump body, an elastic arm which can press on the pump body and drive the trigger to drive the suction plug to reset, a lateral one-way valve which can be opened to connect the liquid introduction cavity and the liquid inlet channel when the suction plug resets is arranged between the liquid introduction cavity and the liquid inlet channel, and the pump has the characteristics of simple structure, high liquid introduction efficiency, and can fully utilize the solution sucked into the liquid introduction cavity by the pump.

The utility model discloses a two-way throttling solenoid valve with adjustable flow, which comprises a solenoid valve body, the solenoid valve body comprises a valve body, a valve sleeve, an iron core, a valve core and an adjusting mechanism, the valve sleeve, the iron core and the valve core are positioned in the valve body, and the adjusting mechanism is used for rotating a pull rod to drive the iron core to move up and down. Meanwhile, the iron core clamping groove ensures that the pull rod is stably connected with the iron core, so that the adjusting action is accurately transmitted; a gap groove in the valve element is matched with the adjusting mechanism, flow adjustment is further refined, and the flexibility and accuracy of adjustment are enhanced; the gap alpha between the valve sleeve and the iron core defines the flow adjusting range, an operator can conveniently and finely control the rotation amplitude of the pull rod in a labor-saving mode through the hand wheel, and stable rotation of the pull rod and stable movement of the iron core during adjustment are guaranteed through cooperation of the rod sleeve on the outer wall of the pull rod and the valve body wedging groove.

The invention belongs to the technical field of experimental animal models, biomedical research and immunology, and discloses a photocoagulation thymus ischemia animal model, a method and application of the photocoagulation thymus ischemia animal model in rapid simulation of thymus degeneration and immune senescence, and the model shows at least one or more characteristics 1-7 days after induction: thymus atrophy, thymus weight or thymus index is significantly reduced; the cortical-medullary structure of thymus is disordered or disappears; the expression distribution of the Keratin 5 / Keratin 8 is abnormal; thymic cell apoptosis is increased, and lipid deposition is enhanced; the proportion of CD4 + CD8 + double positive T cells is reduced, and the proportion of DN2 / DN3 stage T cells is increased; the initial T cell output is reduced; and the immune function is reduced. The pathological mechanism is clear; the modeling period is short, and the immune senescence phenotype can be stably obtained within several days; the injury focus is controllable, and systemic stress or hormone interference is avoided; the model has high repeatability and is suitable for mechanism research and drug screening.

The application discloses a connecting support and a battery assembly. The connecting support comprises a support body and a circuit assembly. The support body comprises a main body part and a blocking part. The main body part is used for mounting an explosion-proof valve of a battery. The blocking part is connected with the main body part. The circuit assembly is at least partially used for shielding the explosion-proof valve. The blocking part is located between the circuit assembly and the explosion-proof valve and is spaced from the circuit assembly and the explosion-proof valve, so as to isolate the sprayed material of the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized. Compared with the prior art, the application successfully isolates the direct contact between the sprayed material and the circuit assembly by arranging the blocking part between the circuit assembly and the explosion-proof valve. The blocking part effectively protects the circuit assembly, ensures that the circuit assembly can still work normally under extreme conditions, and provides stable voltage monitoring and signal transmission functions. The safety and reliability of the battery assembly are significantly improved by using the connecting support.

The invention discloses a telescopic clamping module of a gamepad and the gamepad, and aims to solve the problems that an existing telescopic gamepad integrated clamping structure is complex in mold opening, high in cost and poor in compatibility, and the whole gamepad needs to be scrapped after a clamping part is damaged. The telescopic clamping module comprises a fixed shell and a movable shell which can slide in a telescopic mode relatively, a reset spring is connected between the fixed shell and the movable shell, and fixed ends are arranged at one ends of the outer sides to be connected with a gamepad shell. The fixed shell and / or the movable shell are / is provided with a clamping part, an anti-sliding / anti-abrasion pad is arranged on the front face of the fixed shell, one anti-sliding / anti-abrasion pad is provided with a sliding channel / rail, and the other anti-sliding / anti-abrasion pad is slidably installed in a matched mode. The gamepad comprises a left gamepad, a right gamepad and the telescopic clamping module, and the fixed shell and the movable shell are fixed to the two gamepads respectively. The telescopic clamping function is independent into a module, the design of a handle shell is simplified, the mold opening cost is reduced, clamping is stable, assembling is flexible, a damaged module can be independently replaced, the situation that the whole handle is scrapped is avoided, and the handle is adaptive to a mobile phone or a tablet personal computer.

The invention discloses a network setting method and device, equipment and a medium, and belongs to the technical field of network configuration, and the method comprises the steps: obtaining current network configuration information through a command for displaying all network information; storing the obtained current network configuration information in a memory; refreshing the firmware version of the controller to a second firmware version; starting a second firmware version of the controller, and obtaining a flag bit for setting a network information command; judging whether the flag bit of the network information setting command is a first preset value or not; and in response to the fact that the flag bit of the network information setting command is a first preset value, acquiring current network configuration information in the memory, and performing network setting on the controller again according to the current network configuration information and the command for setting single network information. According to the method, a transition version does not need to be customized, the IPMI command is used for carrying out network configuration reservation setting on the controller, the development difficulty is reduced, and the product development time is shortened.

The utility model discloses cerebrovascular bypass teaching experiment equipment, which belongs to the technical field of medical teaching training and comprises an operation table and an instrument table, the operation table and the instrument table are split, the operation table comprises an operation table top and a support I, a front plate is horizontally arranged at one end of the long axis direction of the operation table top, and a water nozzle and an exhaust hood are arranged on the front plate. A liquid collecting groove is formed in the area, close to the front plate, of the operation table top, and a fixing frame is arranged in the liquid collecting groove; the instrument table comprises an instrument table top and a support II, a double microscope and a power socket are arranged on the instrument table top, a back plate is arranged on one side of the instrument table top, a display screen is installed at the top end of the back plate, and electrical elements are placed below the instrument table top. The set of teaching experiment equipment has the advantages of strong specialty, clear demand, stable function, flexible structure, high integration level, small operation space and the like.

The application discloses an engineered exosome targeting human urokinase-type plasminogen activator receptor uPAR and a preparation method and application thereof. Firstly, a high-affinity anti-human uPAR single-domain antibody VHH is prepared; then, a human umbilical cord mesenchymal stem cell engineering cell line expressing a VHH-PTGFRN fusion protein is constructed, and the engineered exosome is prepared and purified by combining three-dimensional hypoxic culture, chemical induction and size-exclusion chromatography technology. The engineered exosome comprises four comparative samples, wherein the core sample Exo^(VHH / miR) can simultaneously display the anti-uPAR VHH on the membrane surface to realize targeted delivery and enrich miR-193b-3p in the chamber to realize gene silencing, and the synergistic effect of the two can efficiently remove the uPAR high-expression senescent cells and inhibit the senescence-associated secretory phenotype SASP. The engineered exosome has the advantages of standardized preparation process, high yield and high purity, strong targeting, excellent curative effect and good safety, and can be used for preparing a treatment preparation for anti-aging and aging-related diseases, and has important clinical application value.

The application belongs to the technical field of wind tunnel test, and discloses a semi-mould loading device control system and a control method thereof. The semi-mould loading device control system is used for controlling four electric cylinders of the semi-mould loading device, and realizes Fx, Fy, Mx, My and Mz value loading of the semi-mould balance through the four electric cylinders. The semi-mould loading device control system takes a main control computer and an embedded ARM controller as a core control unit, is responsible for collection and processing of all signals, controls a running position of the electric cylinder, and has a prompt function of motion and state. The semi-mould loading device control system comprises the main control computer, the embedded ARM controller and control circuits corresponding to the electric cylinders. The control method comprises power-on self-checking of the control system, load rationality inspection, calculation of a tensile and compressive force sensor target value, current loading direction loading, current loading direction unloading, loading direction replacement and completion of all load group loading. Through automatic control, simple and convenient operation is realized.

The present application belongs to the field of nutritional composition and biological medicine technology, and particularly relates to a composition for protecting and preserving liver, a preparation method, application and product thereof. The composition of the present application is composed of extract of Silybum marianum, glucoraphanin and extract of Cynara scolymus. The composition of the present application can intervene the pathological process of liver injury from multiple dimensions such as antioxidation, anti-inflammation, regulation of lipid metabolism and repair of hepatocytes through synergistic effect of the three components, significantly reduces the levels of glutamic-pyruvic transaminase and glutamic-oxalacetic transaminase, reduces the accumulation of liver fat, improves the antioxidant capacity of the body, effectively prevents or improves alcoholic, chemical, non-alcoholic fatty and autoimmune liver injury, delays the progression of liver fibrosis, and comprehensively maintains the structural integrity and functional stability of the liver.

The invention relates to a carrier for realizing long-acting controlled release of cinnamyl aldehyde based on synergism of bacterial cellulose and polylactic acid, a preparation method of the carrier and application of the carrier in fresh keeping of fruits and vegetables, and the preparation method comprises the following steps: firstly, placing the bacterial cellulose in a deep eutectic solvent system containing citric acid, glycerol and choline chloride, and heating for reaction to obtain CABC; then, the CABC is placed in an activation system containing the 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and the N-hydroxysuccinimide, and CABC-ONH2 is obtained; then, the CABC-ONH2 and cinnamyl aldehyde are subjected to an oximation reaction, and CABC / CIN is obtained; and finally, mixing CABC / CIN with polylactic acid to form a film, so as to obtain the bacterial cellulose / polylactic acid synergistic cinnamyl aldehyde long-acting controlled release carrier. Compared with the prior art, initial burst release of CIN in the degradable carrier is effectively reduced, and the release stability and activity retention rate in the middle and later periods are improved; the cooperative processing suitability with PLA is improved; the antibacterial and antioxidant effects are simultaneously realized in the fruit and vegetable fresh-keeping application.

The invention discloses a microfiller for culturing sewage treatment aerobic granular sludge and a preparation method of the microfiller, belongs to the technical field of sewage treatment, and relates to the microfiller for culturing the sewage treatment aerobic granular sludge. The invention aims to solve the problems of long granulation time and poor stability in the prior art. The microfiller for culturing the aerobic granular sludge for sewage treatment is prepared by uniformly mixing one or more of straw powder, beneficial metal salt and red mud with plastic particles, heating, melting and granulating to obtain fine particles rich in organic matters, and aging the fine particles rich in organic matters by ultraviolet light. According to the microfiller disclosed by the invention, an internal core of the aerobic granular sludge is formed in a form of rapid colonization of microorganisms, and a novel aerobic granular sludge system with a stable core is formed through induction, so that the bottleneck problems of long granulation time (2-5 months) and poor stability existing in an aerobic granular sludge technology at present are solved.

The present invention proposes a fat stem cell composition for wound repair and a preparation method and application thereof, which belongs to the field of stem cell technology. Fetal bovine serum, dexamethasone, penicillin, streptomycin, collagen, magnetic particles, and substance P are added to DMEM culture medium to prepare a culture medium for low-frequency magnetic field culture of fat mesenchymal stem cells, separation, obtaining a stem cell solution, embedding to obtain stem cell microspheres, freeze-drying the supernatant to obtain paracrine culture material, and mixing with stem cell microspheres, hydroxypropyl methylcellulose, carboxymethyl chitosan, hyaluronic acid, glycerol, and stem cell microspheres to obtain a fat stem cell composition for wound repair, which has good effects of implanting damaged tissues, releasing nutrients, promoting new blood vessel formation, regulating oxidative stress and inducing anti-inflammatory reactions, and is helpful for wound repair. It can be converted into a gel phase at a skin epidermal temperature between 35-37°C, stabilizes components, and releases in a controlled manner.

The present application belongs to the technical field of pump body mechanical seal auxiliary device, and relates to a pump body mechanical seal anti-evacuation device and anti-evacuation method, which comprises a defoaming auxiliary impeller located between a main impeller and an outer mechanical seal static ring, a flow monitoring flow interruption assembly installed on a pump body liquid inlet port, a mechanical seal vibration sensor arranged at the pump body mechanical seal, and a control cabinet in communication connection with the pump body, the mechanical seal vibration sensor and the flow monitoring flow interruption assembly. The defoaming auxiliary impeller is used to destroy the bubble structure in the slurry, reduce the phenomenon of evacuation caused by foaming slurry, and reduce the impact of pump body vibration on the mechanical seal, so as to slow down the wear speed of the dynamic ring and the static ring. The flow monitoring flow interruption assembly and the mechanical seal vibration sensor are used to monitor the medium flow and the mechanical seal vibration in real time, and feedback signals, so that the monitoring personnel can obtain the working information of each part of the pump body in time, realize the rapid response and accurate treatment of the mechanical seal area evacuation problem, and form a triple protection monitoring in cooperation with the defoaming auxiliary impeller, thereby improving the accuracy and timeliness of the anti-evacuation.

The utility model discloses an execution motor locking limited slip speed reducer, which belongs to the technical field of vehicle transmission and comprises a box body, a differential shell, a first half axle gear and a second half axle gear, a locking clutch sleeve and an actuating device are arranged in the box body, the locking clutch sleeve acts to enable the second half axle gear and the differential shell to be combined and locked, and the actuating device actuates the locking clutch sleeve. The locking clutch sleeve synchronously rotates relative to the second half axle gear but can axially move, and tooth-shaped locking pieces matched with each other are arranged between the locking clutch sleeve and the differential mechanism shell; the actuating device comprises a shifting fork, a transmission assembly and an execution motor. The execution motor drives the shifting fork through the transmission assembly to shift the locking clutch sleeve to axially move between the locking position and the unlocking position. A slip limiting friction plate set is arranged between at least one of the first half axle gear and the second half axle gear and the differential mechanism shell. The differential locking device is small in size, good in locking effect and capable of achieving the passive differential locking function and automatically controlling torque distribution of the left wheel and the right wheel to achieve the slip limiting function.

The utility model provides a quick assembly and disassembly type swivel joint relates to swivel joint technical field, including the mounting bush, the first limit ring is fixedly connected with the mounting bush outer surface, the movable bush is sleeved with the mounting bush outer surface, the rotary connection pipe is sleeved with the mounting bush inboard. In the utility model, when connecting the mounting bush and the rotary connection pipe, first need to move the movable bush to the active state, provide the space for the insertion of rotary connection pipe, after promoting the movable bush, the rotary connection pipe can enter the mounting bush smoothly, the force that adds promotes the interaction of movable ball and movable rod, forms the activity space, and further creates the condition for the insertion of rotary connection pipe, after the insertion of rotary connection pipe, the elasticity of spring makes the movable bush restore the original position, promotes movable ball movement, further drives movable rod displacement, until movable ball is guided limit groove, ensure that the rotary connection pipe is accurate limit, prevent the separation, limit groove not only limit the separation, still guarantee that the rotary connection pipe can rotate freely after the insertion.

The invention discloses a standardized near-infrared laser high-precision scanning cutting lithography objective lens, a first lens with negative optical power, whose object side and image side are both concave; a second lens with negative optical power, whose object side and image side are both concave; a third lens with positive optical power, whose object side is a plane, and whose image side is a convex; a fourth lens with positive optical power, whose object side is a plane, and whose image side is a convex; a fifth lens with positive optical power, whose object side is a convex, and whose image side is a plane; a sixth lens with positive optical power, whose object side is a convex, and whose image side is a plane; a seventh lens with negative optical power, whose object side and image side are both concave; an eighth lens with negative optical power, whose object side is a concave, and whose image side is a plane; a ninth lens with positive optical power, whose object side is a convex, and whose image side is a plane. It has good laser convergence effect, stronger versatility, and better cost performance.

The invention discloses an oral intersection protective film for improving sexual interest and preventing sexually transmitted diseases and a preparation method, and relates to the technical field of medical instruments, the preparation method comprises the following steps: S1, preparation of a base material film: preparing a base material layer film with the thickness of 10-50 microns by adopting waterborne polyurethane resin through a tape casting method or a film blowing method; s2, constructing a composite functional layer: uniformly dispersing the antibacterial and antiviral agent in a waterborne polyurethane solution, coating one surface of the base material layer with a precise coating device to form the composite functional layer, and drying and curing at 50-70 DEG C. The composite functional layer is arranged and contains an effective amount of broad-spectrum antibacterial and antiviral agent, so that the antibacterial and antiviral composite material is obtained. The infection risk of sexually transmitted diseases can be remarkably reduced, and the use safety is improved. Meanwhile, a microencapsulated and embedded food-grade flavoring agent and a warm and hot sensing preparation are adopted in the sensory enhancement layer, so that a pleasant flavor can be released and a comfortable warm and hot sense can be generated in the use process, and sexual interest experience is effectively improved.