305results about How to "Small structure size" patented technology

The invention belongs to the field of wireless communication, and particularly relates to a Butler matrix feed network with a slow wave structure, which comprises a substrate integrated waveguide and a Butler matrix feed network formed on the substrate integrated waveguide, the Butler matrix feed network comprises a first 3dB coupler, a second 3dB coupler, a third 3dB coupler, a fourth 3dB coupler, a first cross coupler, a second cross coupler, a first 45-degree slow wave loading phase shifter, a second 45-degree slow wave loading phase shifter, a first 0-degree slow wave loading phase shifter and a second 0-degree slow wave loading phase shifter. According to the Butler matrix feed network, a row of non-radiation transverse slots are introduced into each phase shifter to serve as phase delay lines, so that the structure size of the Butler matrix feed network is reduced, and the dispersion is reduced.

The invention relates to a mechanical arm and a double-arm robot. The mechanical arm comprises a supporting body, a shoulder structure, a large arm, an elbow structure, a small arm and a wrist structure. The shoulder structure comprises a shoulder differential assembly, a shoulder rope driving assembly and a shoulder joint, and the shoulder joint has three degrees of freedom and comprises a shoulder rotating seat fixedly arranged on the shoulder differential assembly and a shoulder adapter which is pivoted to the shoulder rotating seat, fixedly arranged at the first end of the big arm and in transmission connection with the shoulder rope driving assembly; the wrist structure comprises a wrist fixing support, a wrist rope differential assembly, a wrist rotation driving assembly and a wrist joint, and the wrist joint has three degrees of freedom and comprises a wrist rotation support pivoted to the wrist fixing support and a wrist deflection support which is in transmission connection with the power output end of the wrist rope differential assembly and pivoted to the wrist rotation support; the wrist rotation driving assembly is installed on the wrist deflection support and used for being in transmission connection with the tail end mechanical arm. The shoulder joint and the wrist joint of the mechanical arm are small in mass and inertia.

The utility model discloses a miniaturized electric slide rail which comprises an outer frame, an inner frame and ball structures, the ball structures are arranged in slide ways on two sides of the outer frame, the inner frame is slidably connected in the outer frame through matching with the ball structures, an electric driving structure is arranged at the rear end of the inner side face of the outer frame, and the front end of the electric driving structure is connected with a transmission structure. The inner frame is arranged above the transmission structure; the transmission structure comprises a lead screw, the lead screw is arranged on the inner side face of the outer frame in the length direction of the outer frame, a lead screw nut is arranged on the lead screw and fixedly connected with the inner side face of the inner frame, and the electric drive structure is in transmission connection with the rear end of the lead screw and drives the lead screw nut to do linear motion along the lead screw. The driving motor is arranged in the sliding rail, so that the internal structure of the sliding rail is more compact, and a large amount of space outside the sliding rail is saved; in addition, the sliding rails are miniature electric sliding rails, so that the overall structural size is small, and the utilization space outside the sliding rails is greatly improved.

The invention relates to the technical field of aviation optical cables, in particular to a high-temperature optical cable for aviation and a preparation method of the high-temperature optical cable for aviation, and the high-temperature optical cable for aviation comprises a high-temperature optical fiber, a stainless steel loose sleeve protection tube, a fiber-woven reinforcement piece and a high-temperature-resistant polymer sheath, the stainless steel loose tube protection tube is sleeved with the fiber woven reinforcing piece, and the fiber woven reinforcing piece is sleeved with the high-temperature-resistant polymer sheath; according to the technical scheme, the temperature resistance grade of the aviation optical cable can be improved to 300 DEG C, and the product is small in structural size and light in weight and has good use characteristics of tensile strength, compression resistance, bending resistance and the like.

The invention discloses a self-locking type hydraulic supporting mechanism, and belongs to the technical field of transport trailer structures, the self-locking type hydraulic supporting mechanism specifically comprises a trailer, a hydraulic cylinder and an anti-overturning structure, and the trailer is provided with an air cylinder and a vehicle-mounted storage battery; the hydraulic cylinder is connected with a vehicle-mounted storage battery, the hydraulic cylinder replaces a front side supporting leg of the trailer, a cylinder body a of the hydraulic cylinder is installed on the front side of the trailer, and a piston rod a of the hydraulic cylinder points to the ground. The anti-overturning structure is arranged between the cylinder body a and the piston rod a and used for preventing the piston rod a from retracting inwards, the self-locking type hydraulic supporting mechanism can be remotely controlled to automatically ascend and descend (or can be operated in a cab) under the condition of power failure and fuel cut, a traction disc can be separated from a trailer, and disengaging and connecting of the tractor and the trailer can be completed in about one minute. And the labor intensity and the unhooking time are greatly reduced.

An electromagnetic loading device for generating large displacement and a test method thereof, wherein an active coil and a sleeve are mounted on a central rod, and the inner circumferential surface of the sleeve is slidably matched with the outer circumferential surface of the central rod. A secondary coil is mounted on the sleeve, and the secondary coil and the sleeve are interference matched. A magnetic yoke made of soft magnetic material is designed outside the active coil and the secondary coil to constrain the magnetic lines of force of the pulse magnetic field generated by the active coil and the secondary coil under pulse excitation to diverge outward, so that the magnetic lines of force are concentrated around the coil, thereby increasing the electromagnetic force without increasing the capacitance size and initial voltage of the active coil charging and discharging circuit. According to numerical simulation, when the maximum voltage and capacitance are limited, the main force-bearing components of the loading device are always in the elastic stage of the secondary coil, the loading rod and the pad during the loading process, so that the entire loading device can be reused and the test repeatability is good.

The invention discloses a rectangular twisted waveguide capable of being twisted at any angle, and relates to the technical field of high-power microwave and millimeter wave electronics. The rectangular twisted waveguide comprises an input rectangular waveguide, a three-circle-shaped twisted waveguide and an output rectangular waveguide which are arranged in sequence. The three-circle twisted waveguide is formed by superposing a small circular hole in the middle and two large circular holes which are symmetrically formed in the two sides and have the same size, the three circular holes have the same thickness and are perpendicular to any cross section in the electromagnetic wave transmission direction, the circle centers of the small circular hole and the two large circular holes are located on the same straight line, and the straight line is a circle center axis; the included angles between the narrow side center lines of the input rectangular waveguide and the output rectangular waveguide and the circle center axis are the same. The rectangular twisted waveguide capable of being twisted at any angle is applied to different frequency bands, the size of the twisted waveguide can be reduced, the production cost can be reduced, and the twisting angle of the twisted waveguide can be changed at any angle.

The invention relates to a magnetron plasma arc wire powder synergistic surfacing device and a surfacing method. The device comprises a welding gun fixing support; the welding gun is arranged on the welding gun fixing bracket, is used for realizing metallurgical bonding between a base material and cladding metal and comprises a welding gun tube, a non-consumable welding electrode and an inner nozzle assembly; the non-consumable welding electrode is wrapped by an insulating clamping sleeve and is fixed in the welding gun tube; the inner nozzle assembly is arranged between the welding gun tube and the welding electrode; the inner nozzle assembly is provided with a powder feeding port, a shielding gas nozzle and an ion gas nozzle; and the wire feeding mechanism is arranged on the welding gun fixing bracket and is used for feeding cladding metal to the surface of a base material. The method has the beneficial effects that the electric arc is controllable, parameters such as the direction and speed of cladding metal entering a molten pool can be adjusted, the surfacing process is stable, chemical components of a cladding layer are adjustable and controllable, the cladding speed is high, robot surfacing can be achieved, the automation degree of surfacing is improved, and the labor cost of surfacing is reduced.

The invention relates to the technical field of railway construction equipment, in particular to a ballastless track steel formwork rapid positioning device and a positioning method thereof.The ballastless track steel formwork rapid positioning device comprises a horizontal track and a mounting base which are in sliding butt joint, and further comprises two connecting frames distributed at the top and the bottom of the mounting base; a sliding rod connected with the connecting frame in a sliding and inserted mode is fixed to the mounting base, butt joint bases are fixed to the two ends of the connecting frame, positioning units making contact with the steel formworks are installed in the butt joint bases, and rotating assemblies used for driving the positioning units to rotate are installed on the butt joint bases; the mounting base is matched with the horizontal rail to be in butt joint with a guardrail, the overall design is small in structural size, the space needed by mounting can be greatly reduced, the steel formwork can be positioned at the positions of a tunnel and a bridge, meanwhile, the steel formwork can be conveniently mounted, and meanwhile, the mounting efficiency is improved. And the designed positioning mechanism can be disassembled after pouring is completed, and can be used repeatedly.

An assembly assembling cavity is formed in the bottom face of a main machine base, a clamping element is arranged on the main machine base, a mopping assembly is detachably installed in the assembly assembling cavity, a reset element is elastically assembled on the mopping assembly, and the reset element has a first reset state and a second reset state; the clamping element is elastically assembled on the mopping assembly, the mopping assembly has an unfolded state and a folded state, when the mopping assembly is in the unfolded state, the clamping element and the reset element are separated from each other, and the reset element is in a first reset state and used for being matched with the clamping element of the host base in a clamping mode; when the mopping assembly is in the folded state, the clamping element is matched with the reset element in an aligned mode, and the reset element is switched from the first reset state to the second reset state. The mopping assembly is based on two conversion states, two state conversion of the reset element is designed in a linkage mode, the mop cloth and the mopping assembly can be conveniently mounted and dismounted, and the assembly firmness can be improved.

The utility model relates to the technical field of sewage sampling equipment, and discloses a detection sampling device for wastewater treatment, which comprises a sampling box and a flow guide pipe, a front cover is fixedly mounted on the front side of the sampling box, a plurality of flow dividing pipes are fixedly mounted on one side in the sampling box, and a mounting plate is fixedly mounted at the top in the sampling box. A gear motor is fixedly mounted on the rear side of the mounting plate and electrically connected with an external master controller through a connecting wire, and two semicircular limiting plates are arranged on the outer side of the flow guide pipe. Two groups of shunting pipes and a second connecting ball seat are arranged on one side in the sampling box, and one sides of the two shunting pipes are respectively connected with sampling equipment and wastewater treatment equipment through pipelines; the wastewater can be automatically sampled and conveyed into detection equipment for detection by matching structures such as a peristaltic pump, a speed reducing motor, a flow guide pipe, a semicircular limiting plate, a telescopic pipe and a first connecting ball seat, and the whole structure is small in size and convenient to mount.

The invention relates to a spatial parallel mechanism, in particular to a spatial three-translation and one-rotation parallel mechanism which comprises a base, a moving platform and at least three branch chains, the moving platform is arranged above the base, and the at least three branch chains are connected between the moving platform and the base in parallel; each branch chain comprises a parallel four-connecting-rod support arm and a tail-end connecting rod, the lower end of the parallel four-connecting-rod support arm is hinged to the base, the upper end of the parallel four-connecting-rod support arm is hinged to one end of the tail-end connecting rod, the other end of the tail-end connecting rod is hinged to the movable platform, and the swing direction of the tail-end connecting rod is perpendicular to the swing direction of the parallel four-connecting-rod support arm and is parallel to the plane of the base; all the branch chains act synchronously, so that the movable platform can achieve three-degree-of-freedom translational motion and rotary motion around the vertical axis. The multi-branch parallel mechanism has the characteristics that the moving branch chains are simple in movement and can be decoupled in movement, and the multi-branch parallel mechanism is small in degree of freedom and high in rigidity, and the precision and quality of the mechanism in the operation process are easily guaranteed.

The invention discloses an artificial surface plasmon microstrip transmission line with a crosstalk suppression effect. The transmission line conduction band is provided with a periodic internal notch groove structure which is used for transmitting microwave artificial surface plasmons with strong local field constraint performance. The periodic notch grooves can be S-shaped, spiral, T-shaped, cross-shaped, KoCh-shaped, Moore Curve-shaped and other forms and are distributed in the microstrip conduction band, and the width of the conduction band is not increased, so that the remarkable inhibition effect that the far-end crosstalk is lower than-30dB is realized on the premise that the size of the microstrip line is not changed. The microstrip transmission line has the low-pass characteristic, the frequency response falling edge is steep, the cut-off frequency can be flexibly adjusted by adjusting the notch groove width and the number of iterations, and application requirements of different frequency bands can be met by scaling. The structure is simple, the size is compact, inter-line crosstalk can be effectively suppressed, the signal transmission quality is improved, the strict signal integrity requirement is met, and the high-frequency and high-speed signal transmission and functional devices are widely applied, and the wide application prospect is achieved.

A built-in parallel type solid fuel-liquid oxidizing agent mixing engine comprises an oxidizing agent conveying-jetting integrated device, a front sealing head, a solid fuel with a shell, a spraying pipe and an ignition device. One surface of the front sealing head is connected with the oxidant conveying-jetting integrated device through screws, and the other surface of the front sealing head is connected with the solid fuel with the shell; one surface of the front sealing head is connected with the oxidant conveying-jetting integrated device through screws, and the other surface of the front sealing head is connected with the solid fuel with the shell; the front sealing head is provided with a first sealing groove; the first sealing groove is provided with a first sealing ring; the combustion chamber shell is provided with a second sealing groove; and the second sealing groove is provided with a second sealing ring. The system structure is simplified, and the weight of the engine is reduced; and meanwhile, powerful conditions are provided for efficient and uniform combustion of fuel-rich gas and an oxidizing agent, and therefore the energy release efficiency of the engine is improved.

The invention belongs to the technical field of composite materials, and discloses a transparent weather-resistant glass fiber reinforced thermoplastic-based composite material and a preparation method thereof.The preparation method comprises the following steps that 1, polyethylene glycol terephthalate and poly (ethylene isophthalate) are subjected to drying, melt blending and extrusion forming respectively to prepare a polymer; (2) drying and mixing the polymer prepared in the step (1) and polyadipyl m-xylylenediamine to prepare a mixture, adding a compatilizer, and performing melt blending and compression molding to prepare a film; and (3) alternately laying the film prepared in the step (2) and the glass fiber material, and then carrying out hot pressing treatment to obtain the transparent weather-resistant glass fiber reinforced thermoplastic matrix composite material. According to the prepared transparent weather-resistant glass fiber reinforced thermoplastic-based composite material, the light transmittance reaches 89% at most, the haze reaches 4.2%, the thermal shrinkage rate reaches 1.1%, the tensile strength is 405 Mpa, and the transparent weather-resistant glass fiber reinforced thermoplastic-based composite material has high optical transparency, good weather resistance and excellent mechanical properties.

The invention relates to a high-rotating-speed ultrahigh-pressure reheating condensing steam turbine which comprises an integral chassis, a cylinder, at least two bearing seats arranged at the front end and the rear end of the cylinder respectively and rotors supported on the two bearing seats, the cylinder extends in the front-back direction and is arranged on the integral chassis, and the high-rotating-speed ultrahigh-pressure reheating condensing steam turbine comprises a high-pressure outer cylinder and a high-pressure inner cylinder arranged in the high-pressure outer cylinder. The low-pressure rear cylinder is installed on the rear side of the high-pressure outer cylinder, the high-pressure outer cylinder is provided with a high-pressure steam exhaust structure allowing high-pressure steam to be exhausted and a reheat steam inlet cavity allowing reheat steam to enter, a high-pressure cavity, a medium-pressure cavity and a steam inlet cavity are defined between the high-pressure outer cylinder and the high-pressure inner cylinder, the high-pressure cavity and the medium-pressure cavity are distributed in a spaced mode, and the steam inlet cavity communicates with the high-pressure cavity. A low-pressure cavity communicated with the medium-pressure cavity and a low-pressure steam exhaust structure for exhausting low-pressure steam are formed in the low-pressure rear cylinder; the rotor is sequentially arranged in the high-pressure cavity, the low-pressure cavity and the steam exhaust cavity in a penetrating mode. The invention aims to solve the problems of low efficiency, large size and complex field installation of the existing low-power high-steam-admission-parameter steam turbine.

The invention provides a scanning electron microscope objective lens system and a detection method, and relates to the technical field of scanning electron microscopes. The magnetic lens device is used for focusing an incident electron beam; the deflection device, the anastigmator, the Wien analyzer group and the detection device are all located in an accommodating space in the magnetic lens device; the deflection device, the anastigmator and the Wien analyzer group are arranged along the optical axis of the incident electron beam and are arranged around the optical axis; the deflection device and the anastigmator are respectively used for adjusting the movement direction and shape of the incident electron beam so as to scan a to-be-tested sample through the incident electron beam, so that the to-be-tested sample generates signal electrons; the Wien analyzer group is used for adjusting the movement direction of the signal electrons to enable the signal electrons to enter the detection device; the detection device is located on the side, close to the magnetic lens device, of the deflection device, the anastigmator and the Wien analyzer set and used for generating a detection signal according to the signal electrons and achieving surface imaging of the to-be-detected sample. The imaging precision and the detection efficiency of the objective lens system are improved.

The linear vibration motor comprises a vibration unit arranged in a shell and an elastic piece which is fixed with the vibration unit and suspends the vibration unit in the shell, the vibration unit comprises a mass block fixedly connected with the elastic piece, and the elastic piece comprises an elastic part connected with two fixing parts. An elastic part comprises two elastic arms which are arranged at intervals in the first direction, a mass block comprises a main body part connected with an elastic part, the main body part comprises a side face connected with the elastic part, and the mass block further comprises protruding parts which protrude and extend towards a shell from the side face in the vibration direction. The elastic parts and the protruding parts are oppositely arranged at intervals in the second direction perpendicular to the vibration direction and the first direction, the problems that in the prior art, due to the fact that an elastic piece is only provided with a single elastic arm, the structure size is large, and plastic deformation is likely to happen are effectively solved, and meanwhile the size of the mass block is effectively increased; and the performance of the linear vibration motor is further improved.

According to the low-loss high-speed parallel line, the extrusion molding method of the insulating cores and the lotus root core extrusion molding mold, the low-loss high-speed parallel line comprises the two signal conductors which are arranged side by side, the outer side of each signal conductor is provided with the corresponding insulating core, and the two insulating cores are internally provided with the air channels which are distributed in a lotus root shape. The air channel enables the void ratio of the insulating core to be large, so that the dielectric constant of the whole cable can be reduced, the insertion loss is reduced to a great extent, and the cable is suitable for higher bandwidth data transmission requirements. Moreover, a shielding layer and an outer coating layer are sequentially arranged outside the two insulating cores from near to far, two drainage wires which are arranged side by side with the insulating cores and are symmetrical to each other are arranged between the shielding layer and the outer coating layer or between the two insulating cores and the shielding layer, and the two drainage wires are respectively and conductively connected with the shielding layer. Therefore, the grounding and tensile effects can be achieved, and the stability of the parallel line pairs can be effectively improved.

The invention relates to the field of new energy automobiles, in particular to a control driving circuit, a vehicle-mounted high-voltage distribution box and a control driving method.The control driving circuit comprises a driving module, a control module, an on-off driving circuit and an on-off assembly, the driving module is connected with the control module and used for receiving a control signal sent by the control module, and the on-off driving circuit is connected with the control module; the on-off component is driven to be switched on or switched off according to the control signal; the monitoring module comprises a current sampling module and a temperature sampling module, one end of the monitoring module is connected with the output end of the on-off assembly, the other end of the monitoring module is connected with the control module through a bus, and the monitoring module is used for collecting current and circuit temperature in a circuit and feeding back the current and the circuit temperature to the control module; the control module is connected with the driving module and the monitoring module, and is used for generating a control signal according to a signal fed back by the monitoring module, sending the control signal to the driving module, and controlling the driving module to be switched on or switched off. The circuit structure is simple, the structural size is small, and working conditions such as short circuit, overload and over-temperature can be judged more accurately and rapidly.

The invention provides a self-propelled extended-range vegetable tobacco seedling transplanter and a continuous tobacco seedling transplanting method, the transplanter comprises a complete machine support, a walking mechanism, a seedling dropping mechanism, a seedling planting mechanism, a power assembly and a controller, the complete machine support is arranged on the walking mechanism, and the seedling dropping mechanism, the seedling planting mechanism, the power assembly and the controller are all arranged on the complete machine support; the seedling dropping mechanism comprises a plurality of seedling dropping cylinders which are distributed at equal intervals in the circumferential direction, the seedling planting mechanism comprises a seedling receiving guide hopper, a well cellar type seedling planting nozzle and a seedling planting driving execution assembly, and the power assembly provides electric energy for the walking mechanism, the seedling dropping mechanism, the seedling planting mechanism and the controller. The transplanter is simple in structural composition and convenient for subsequent maintenance and repair; when transplanting operation is carried out, the action of each execution mechanism is independently executed by an independent motor, and the controller can flexibly control the running state of each motor according to requirements, so that accurate matching and flexible adjustment of the executable action can be realized.

The tent assembly comprises a main tent frame and an auxiliary tent frame, the auxiliary tent frame is arranged on the main tent frame and has a supporting state and a non-supporting state, and in the supporting state, the auxiliary tent frame extends outwards from the main tent frame so as to enlarge the shielding range of the main tent frame; and in a non-supporting state, the auxiliary tent frame is folded to the main tent frame or the auxiliary tent frame is detached from the main tent frame. According to the tent assembly, when the auxiliary tent frame is in the supporting state, the auxiliary tent frame extends outwards from the main tent frame, so that the structural size of the tent assembly is increased, and meanwhile the shielding range of the tent assembly is enlarged. When the auxiliary tent frame is in the non-supporting state, the auxiliary tent frame is close to the main tent frame or detached from the main tent frame, at the moment, the structural size of the tent assembly is relatively small, and the shielding range is also relatively small. In this way, the state of the auxiliary tent frame can be selected according to the use scene of the carrier, so that the structural size of the tent assembly can be conveniently adjusted.

The utility model discloses a winch which comprises a bearing module, a driving module, a transmission module and a winding drum module, the driving module, a gear speed changing module and the winding drum module are arranged on the bearing module, the bearing module comprises a winch frame, and the driving module comprises an alternating current motor. The gear speed changing module comprises a gear speed changing box, an input shaft and an output shaft, the winding drum module comprises a roller, a roller shaft and a hydraulic disc brake device, an alternating-current motor is arranged at one corner of the end face of the winch frame, a driving shaft is arranged on the alternating-current motor, and the driving shaft is connected with the input shaft through a gear coupling. The input shaft is connected with the output shaft, one end of the output shaft is connected with one end of the roller shaft, a roller is arranged in the middle of the roller shaft, and a hydraulic disc brake device is arranged at the other end of the roller shaft. According to the utility model, the reliability of the winch is improved by adopting the combined type of the dynamic braking of the motor and the hydraulic disc type braking.

The slope embankment pushing type landslide treatment structure comprises an embankment side slope, a construction ditch is formed in the slope toe of the embankment side slope and located at the bottom of a potential sliding face of the embankment side slope, an assembly type pile plate is arranged in the construction ditch, and the bottom of the assembly type pile plate is inserted into a soil body. The upper portion of the fabricated pile plate extends in the axial direction of the construction ditch, and backfill is arranged between the construction ditch and the fabricated pile plate. According to the treatment structure disclosed by the utility model, large-range excavation on the slope during construction is reduced, so that the stability of an original embankment soil body cannot be further disturbed, the stress balance state of the original soil body cannot be damaged, and the possibility that the original high slope is faced with instability damage is avoided; the construction is simple, the construction period is short, and the construction cost is low.

The utility model provides a mechanical arm structure for a small coal mining machine and the coal mining machine, and relates to the technical field of coal mining machines, the mechanical arm structure comprises a supporting piece, a crank arm and a telescopic piece, the crank arm comprises a first arm section and a second arm section which are connected, one end, deviating from the second arm section, of the first arm section is rotationally connected with the supporting piece, and a first rotation center is formed. The end, away from the first arm section, of the second arm section is used for being connected with a machine head and forming a mounting center, and the end, close to the mounting center, of the second arm section inclines downwards. One end of the telescopic piece is rotationally connected with the supporting piece to form a second rotating center, and the other end of the telescopic piece is rotationally connected with the first arm section to form a third rotating center so as to drive the machine head to deflect up and down. According to the mechanical arm structure provided by the embodiment of the invention, by optimizing the sizes of all the parts, on the premise that a large excavation range is guaranteed, the structural size of the mechanical arm is greatly shortened, the gravity center is lowered, the weight is reduced, and the strength, stability and the like are improved.

A horizontal high-speed throwing device based on a steel cable winch comprises a throwing main machine and a lifting and pitching mechanism. The throwing main machine comprises a rolling angle driving mechanism with one end mounted on an outer support and the other end connected to a coupling bracket. The outer support and the coupling bracket are both fixedly connected to the front end of a base. A semi-open annular constraint track and a lifting and lowering elastic baffle of the throwing mechanism are fixed to the base. The base is mounted on a trolley body by screws. A buffer is fixed to the trolley body. A roller group is mounted at the bottom of the trolley body to support and drive the base to move axially along the rail. The trolley body is constrained by two sets of upper limit guide rails mounted on a machine base. A buffer mechanism is mounted at the end of the machine base. The lifting and pitching mechanism comprises a gear rack lifting mechanism. One end of the pitch angle hinge mechanism is connected to a support frame by a double hinge, and the other end is connected to a lifting platform. A rack locking mechanism is fixed to the support frame. The throwing main machine moves axially under the traction of winch drive systems I and II with a wiring function and a follower wheel group.

The application discloses a kind of optical fiber side light extraction structure and method, belong to optical fiber side light extraction technical field, structure has including femtosecond grating light extraction component, filter component including filter layer and with slit light shielding layer, and detection component.The method includes: with grating diffraction separation optical signal in fiber core, with filter component filters optical signal, with detector receives signal.The application is by femtosecond laser in fiber core and writes small refractive index modulation area, with diffraction effect will transport light be introduced with specific angle to side, again cooperate external filter and metal slit and constitute spatial filter, physically block the stray light deviating from preset angle.This internal diffraction+external filter synergic mechanism avoids physical damage optical fiber surface, and realizes high purity, high directional signal extraction under micro size.

This invention belongs to the field of underwater launch technology, specifically relating to an underwater projectile configuration design. It mainly consists of a projectile body and a pusher block. The projectile body adopts a hollow thin-shell structure, with a stepped structure at the front end and four (or more) evenly distributed 90° inclined slots at the rear. The pusher block is a short cylindrical structure with a through hole in the center, sealed by a sealing membrane. This device is small in size, with a diameter of 8-10 mm, making it suitable for underwater launch.

The utility model discloses a closed chip consumable, including main part, be equipped with sample inlet, pre dilution area, ration area, mixing area and detection unit on the main part, and pre dilution area includes premixing cavity and premixing fluid channel with its export intercommunication, and mixing area includes mixing cavity and mixing fluid channel with its export intercommunication, sample inlet, premixing cavity, premixing fluid channel, ration area, mixing cavity, mixing fluid channel and detection unit sequence connection, and premixing cavity and mixing cavity all store reagent in, and premixing cavity and mixing cavity can be pressed and moved, and after pressing and moving, the content in it is mixed in it. This consumable can realize zero contact operation, can avoid cross contamination and operating error, and shorten the detection time. Moreover, premixing cavity can handle sample in advance and then make sample enter each mixing cavity and handle, this can reduce the structure size of each mixing cavity, thereby reduce the structure size of consumable.