58results about How to "Reduce fatigue strength" patented technology

The invention discloses an ultra-large type high-speed plastic extrusion flat film and flat filament unit which comprises an extruder, a water tank, a film lifting and filament cutting device, a hot air oven, a drafting mechanism, a shaping mechanism and a filament collecting mechanism. The drafting mechanism comprises a drafting rack, a drafting transmission shaft, a drafting shaft unloading device, a drafting roller, a drafting roller connecting sleeve, a drafting roller tensioning sleeve and a drafting roller motor; the number of the drafting transmission shafts is at least three, the drafting transmission shafts are arranged in parallel, the drafting shaft unloading devices extend to the middles of the drafting transmission shafts from one ends of the drafting transmission shafts, and at least two drafting roller connecting sleeves arranged in the radial direction of the drafting roller are arranged in the drafting roller. And a drafting roller tensioning sleeve is arranged between the drafting roller connecting sleeve far away from the drafting rack and the drafting transmission shaft. The ultra-large type high-speed plastic extrusion flat film and flat filament unit is high in operation speed, high in production efficiency, good in stability, low in energy consumption, capable of effectively reducing the production cost, excellent in product mechanical performance and stable in quality.

The crusher comprises a coating shell, a feeding mechanism is arranged at the top end of the coating shell, a crushing assembly is arranged at the bottom end of the coating shell, a primary crushing mechanism is arranged in the coating shell, a filter plate is mounted in the coating shell, and a secondary crushing mechanism is mounted in the coating shell. The primary crushing mechanism comprises a rotary drum rotationally mounted at the top end of the filter plate and a driving motor fixedly mounted at the top end of the coating shell. According to the crusher for preparing dihydromyricetin, two groups of alternately retractable crushing cutter structures are introduced, so that the load of a single cutter is effectively dispersed, and the crushing efficiency is improved; and the fatigue strength of the cutter is obviously reduced, so that the service life of the cutter is prolonged. And meanwhile, the crushing cutters are designed to be arc-shaped, so that the materials can be driven to synchronously turn over in the crushing process, material accumulation and dead angle formation are effectively avoided, and the crushing uniformity and efficiency are remarkably improved.

The invention discloses a spot defect detection method for an airborne optical fiber end face, which comprises the following steps: firstly, carrying out image acquisition on an optical fiber, then carrying out graying to obtain an image Img1, and then carrying out binaryzation; performing edge detection on the image, extracting the outer edge contour of the optical fiber, taking the extracted outer edge contour as an ROI (Region of Interest), and performing mask operation on a grayscale image in the region to obtain an image Img2; performing automatic threshold binarization processing on the image Img2, and performing binarization segmentation on the image Img2; and automatically extracting the high-brightness light spot in the image Img2 to detect the defect area S'of the high-brightness defect part of the optical fiber, and taking the ratio F of the defect area S 'to the area S of the image Img2 as the defect rate. According to the method, the high-brightness defect part can be accurately extracted, automatic defect detection is realized, and the method has the advantages of high efficiency, simplicity, stability and reliability.

The invention discloses a full-automatic hydraulic deep hole drilling machine and a fault diagnosis system thereof, and relates to the technical field of coal mine drilling rigs, the full-automatic hydraulic deep hole drilling machine comprises a walking unit, a drilling main machine, an electro-hydraulic system and an automatic control system, the drilling main machine, an electromagnetic valve box of the hydraulic system and the automatic control system are all arranged on the walking unit, and a driving motor is arranged in the walking unit; the drilling main machine is rotationally connected with the walking unit through a driving motor, the drilling main machine is electrically connected with the automatic control system, the drilling main machine is connected with an electromagnetic valve box oil way, the drilling main machine comprises a drill rod storage device, an installation base, a main mechanical arm, an auxiliary mechanical arm, a ferry device and a feeding device, and the auxiliary mechanical arm is arranged on one side of the drill rod storage device; the ferrying device, the main manipulator and the feeding device are sequentially arranged on the mounting base. By operating the control system, automatic drilling construction is realized, the production efficiency is improved, and fault diagnosis can be automatically completed, so that fault elimination work is carried out.

The atmosphere lamp assembly comprises a device body, the device body comprises a lower lamp shell, a light guide device, a control panel and a double-color mask, the control panel and the double-color mask are both installed in the lower lamp shell, the control panel is located on the rear side of the double-color mask, and the double-color mask is fixed to the top of the lower lamp shell; the lower lamp shell is of an arc-shaped structure, a mounting concave block is arranged at the top of the front end of the lower lamp shell and is of an L-shaped structure, bottom connecting columns and locking bolts are arranged at the left end and the right end of the bottom of the lower lamp shell, the locking bolts are of a cross-shaped structure, and a plurality of sets of large fixing holes and small fixing holes are formed in the bottom of the lower lamp shell. According to the atmosphere lamp assembly, the length of the lamp bar is widened, the display distance is increased, and compared with display on a large screen, the atmosphere lamp assembly is more obvious, better in effect and higher in science and technology sense.

The invention discloses a self-priming pump and an exhaust mechanism thereof, and belongs to the technical field of self-priming pumps, the self-priming pump comprises a base, one side of the top of the base is fixedly provided with a water storage tank, one side of the water storage tank is fixedly connected with a first connecting pipe, and the outer wall of the first connecting pipe is fixedly provided with a second valve; a second connecting pipe is fixedly connected to the other side of the water storage tank, a third valve is fixedly installed on the outer wall of the second connecting pipe, a shell is fixedly connected to the center of the top of the base, and a pump shell is fixedly connected to one side of the shell. By designing the water storage tank assembly, water is directly conveyed into the pump shell through the water tank before the pump body is started every time, the water in the water tank can be used repeatedly, the pump body does not need to be started every time for water adding, the fatigue strength of workers is reduced, and time and labor are saved.

The present invention belongs to the field of bored cast-in-place piles, specifically, an efficient slurry discharge device for bored cast-in-place piles, including a guide barrel, the outer wall of the guide barrel is sleeved with a collar, the lower side of the collar is installed with an annular plate, the annular plate and the collar are fixedly connected by a connecting rod, the four sides of the surface of the collar are fixedly installed with transverse plates, the bottom of the transverse plate is installed with a first hydraulic cylinder, and the tail end of the first hydraulic cylinder is fixedly installed with a moving wheel. The present invention can drive the limiting slider to slide in the limiting slide groove through the second hydraulic cylinder, so that the position of the guide barrel can be fine-tuned, so that when docking with the grouting hole, there is no need to manually push it after hoisting for alignment, the operation is quick and convenient, and manpower is saved, the fatigue strength of the staff is effectively reduced, and the efficiency is improved. Moreover, the annular plate is supported on the ground, so that the device is firmly supported after alignment and connection, and tilting is effectively avoided.

The utility model discloses a smoke exhaust fan with a good anti-fatigue structure, and relates to the technical field of smoke exhaust fans. The fan comprises a fan shell, an air inlet is formed in one end of the fan shell in a penetrating mode, a rotating block is arranged at the end, close to the air inlet, of the fan shell, a plurality of fixing blocks are fixedly arranged on the surface of the rotating block, fan blades are arranged between every two fixing blocks, and first fixing holes are formed in the fan blades in a penetrating mode. A second fixing hole communicated with the fixing hole is formed in the fixing block; by arranging the rotating block, the fixing block, the fan blades, the first fixing holes, the second fixing holes and the first bolts, traditional point contact between the fan blades and the bolts is changed into surface contact between the fan blades and the fixing plate, the fatigue strength of the joints is reduced by increasing the contact area of the joints of the fan blades, the possibility that the fan blades break at the joints is greatly reduced, and the service life of the fan blades is prolonged. And the safety of the device is improved.

The present invention discloses a surround special-shaped screen, which includes: a top screen, which is arranged on the roof; shoulder screens, which are arranged at both ends of the top screen and fixedly connected to the top screen; and a vertical screen, which is symmetrically arranged on opposite walls and fixedly connected to the lower end of the shoulder screen; wherein the widths of the top screen, the shoulder screen and the vertical screen are the same, and the top screen, the shoulder screen and the vertical screen respectively include a plurality of display screens. The advantages are: the display screen is first connected to the assembly efficiency by the connecting part, and then the secondary reinforcement connection with the wall is carried out by chemical anchor bolts to reduce the amount of steel structure, reduce the difficulty of installation and the bearing capacity of the building, and improve the safety factor. The arched screen is formed by connecting the roof with the walls on both sides, which broadens the viewer's field of vision and reduces the fatigue intensity of the viewer.

The utility model relates to the technical field of box turnover tools, in particular to a pneumatic balance-based special box turnover tool which comprises a fixing frame, two rotating plates, a rotating frame, a first cross beam, a second cross beam, two connecting rods, a connecting beam, a bearing frame, a box body, a power assembly, a connecting assembly, a first clamping assembly and a second clamping assembly, the box body is pushed to rotate in a frame formed by the connecting assembly, the first cross beam and the second cross beam; when the box body is lifted upwards, the power assembly is started, the abutting connecting rods move upwards, the first cross beam and the second cross beam rotate anticlockwise between the two connecting rods, and the connecting beam rotates clockwise around the first cross beam and the second cross beam; and when the box body needs to be overturned, the first clamping assembly and the second clamping assembly can provide a basis for rotation of the box body, in this way, a worker can conveniently move, overturn and lift the box body, and the box body loading and unloading efficiency and quality are effectively improved.

The invention discloses an auxiliary system for ultrasonic examination, which comprises a movable mechanical arm, and the movable mechanical arm comprises a first arm section, a second arm section, a third arm section, a fourth arm section, a fifth arm section and a sixth arm section which are rotationally connected in sequence; a plurality of mounting holes are formed in the head end of the first arm section, a switching disc is hinged to the tail end of the sixth arm section, and a hand support is mounted on the switching disc. According to the invention, the movable mechanical arm can be controlled to quickly and accurately move the hand support to the examination part by holding the ultrasonic probe with the gyroscope by hand, and the arm is supported by the hand support in the moving process, so that the arm muscle fatigue of an ultrasonic doctor is greatly relieved, the ultrasonic examination efficiency is improved, the operation stability is kept, and the ultrasonic image quality is ensured.

The utility model relates to the technical field of electrical power, in particular to a movable power supply device, which comprises a power supply sliding contact guide rail, a power supply contact block, a power supply control box and a moving assembly, and is characterized in that the moving assembly comprises a top plate, a connecting column, a moving bin, a sliding plate, a plurality of rollers, an air cylinder and a fixed seat, the rollers are fixedly connected with the sliding plate, the fixed seat is fixedly connected with the sliding plate, the air cylinder is fixedly connected with the moving bin, the output end of the air cylinder is fixedly connected with the fixed seat, and when the moving bin needs to be moved, the air cylinder is started, so that the fixed seat abuts against the sliding plate to move downwards in the moving bin until the rollers lift the moving bin; the air cylinder is started to contract, so that the movable bin is in direct contact with the ground, the power supply sliding contact guide rail is conveniently moved by a worker in this way, the fatigue strength of the worker is effectively relieved, and the practicability of the power supply control box is improved.

The utility model relates to the technical field of airtight clamps, in particular to an auxiliary silencer assembly airtight detection clamp which comprises a workbench, two guide plates, a sliding block, a movable plate, a threaded rod, a motor, a supporting plate, a fixed plate, a first soft plate, a second soft plate, a limiting plate, a lifting assembly and a detection assembly. The detection assembly is arranged above the workbench, the silencer is lowered to the height flush with a guide plate through the lifting assembly, then a motor is started, a threaded rod moves a moving plate above a sliding block under the cooperation of the threaded rod and a threaded hole till the silencer is clamped by a first soft plate and a second soft plate, and then airtightness detection is conducted through the detection assembly. In this way, a worker can conveniently clamp and adjust the auxiliary silencer according to the size of the auxiliary silencer, the fatigue strength of the worker is reduced, and the detection efficiency and quality of the auxiliary silencer are improved.

The utility model discloses excavator chain rail joint production mould cleaning device, including cleaning device body, cleaning device body includes work table, filter module and cleaning subassembly, the work table is fixed with the fixed frame through bolt, and filter module has first filter module, second filter module and water storage tank in proper order from top to bottom, and cleaning subassembly is connected to water storage tank through pipeline, and is equipped with pressurized water pump, and cleaning subassembly includes spray module and removes the spray module. Realized semi -automatic cleaning, and operating personnel only need to place the mould on the fixed frame, and set up the parameter, and personnel can complete the cleaning process according to the demand, and greatly reduce the labor intensity, reduce the manual cost, and water storage tank can effectively recycle and handle the cleaning wastewater, reduce the pollution to the environment.

The utility model relates to a breaking hammer penetrating bolt locking device, and belongs to the technical field of breaking hammers. The breaking hammer comprises a front shell, a middle cylinder, a rear shell, a penetrating bolt connecting the front shell, the middle cylinder and the rear shell, a locking nut and an elastic gasket arranged between the locking nut and the rear shell, the locking nut is in threaded connection with the rod portion of the penetrating bolt, and a gasket hole allowing the rod portion of the penetrating bolt to penetrate through is formed in the elastic gasket. And the positioning gasket is provided with an elastic gasket ring groove for positioning the elastic gasket. According to the utility model, the elastic gasket with elasticity is additionally arranged between the locking nut and the rear shell, and when the pulse type tension peak value and the vibration force peak value exceed the deformation resistance of the elastic gasket, the elastic gasket elastically deforms, so that the pulse type tension and the vibration force are converted into the deformation of the elastic gasket; a pulse type tension peak value and a vibration force peak value are reduced, so that the risk of fatigue fracture of the through bolt is reduced.

The present invention relates to an automatic drilling self-locking device for a rotary drilling rig, a drilling control system and a control method, comprising a handle, a pressure plate, a power head motor, a main valve, a self-locking pilot valve, an annular self-locking electromagnet, a pressurizing solenoid valve, a main pump, an auxiliary valve, a floating solenoid valve, a winch motor and a pressurizing oil cylinder. The device can not only realize the drilling self-locking function of the power head, but also realize the intelligent operation of automatic drilling through system control of pressurizing linkage, reduce the fatigue intensity of operators and improve construction efficiency.

The utility model relates to the technical field of logistics transfer, in particular to a logistics package transfer device which comprises a bottom plate frame, a plurality of rolling rollers, a side plate, an electric push rod, a push plate, a plurality of moving wheels, a buffer plate, a spring, a telescopic rod, two sets of auxiliary assemblies, a brake assembly and a side door assembly. After a brake assembly is closed, a side door assembly is opened, an electric push rod is started to abut against a push plate to move between two auxiliary assemblies, at the moment, a buffer plate is subjected to reverse extrusion force of goods, a telescopic rod and a spring start to be compressed, the integrity of the goods can be effectively protected, and in this way, workers can rapidly unload the goods conveniently; the fatigue strength of workers is reduced, and the cargo loading and unloading efficiency and quality are guaranteed.

The invention relates to an outer shell of a police carbon fiber composite material sound wave generator. The existing outer shell of the sound wave generator is generally formed by riveting aluminum alloy plates and profiles, and has the disadvantages of many parts, large weight, high production cost and the like. Aiming at these disadvantages, the invention provides an outer shell of a police carbon fiber composite material sound wave generator. The outer shell adopts a carbon fiber composite material network cross-ply and glues to form an integral hollow cavity frame with the same ply thickness. The outer shell mainly comprises an upper fixed edge, an outer cavity plate, a bottom plate, an outer reinforcing rib cavity, an anti-vibration cavity, a bottom plate convex cavity, a bottom plate central cavity, a hexagonal notch, a quadrangular notch and the like. The outer shell is formed by one-time gluing and curing of a mold. The invention is not easy to deform, is corrosion-resistant, oxidation-resistant, light-weight, vibration-resistant, impact-resistant, fatigue-resistant, has few parts, and is simple and convenient to assemble. The outer shell is about 25% lighter than the aluminum alloy structure with the same function.

The utility model relates to a hydraulic breaking hammer, and belongs to the technical field of breaking hammers. The hydraulic cylinder comprises a front shell, a middle cylinder, a rear shell and four penetrating bolts used for connecting the front shell, the middle cylinder and the rear shell, and further comprises a first locking assembly arranged at the rod end of at least one penetrating bolt. The first locking assembly comprises a first nut and a first gasket, wherein the first nut is in threaded connection with the rod end of the penetrating bolt, the portion, between the first nut and the rear shell, of the penetrating bolt is sleeved with the first gasket, and the first nut is in spherical face fit with the first gasket. A spherical revolute pair capable of generating rotation is formed between the nut and the gasket; when the penetrating bolt vibrates, the penetrating bolt and the first nut have a rotatable freedom degree between a spherical revolute pair formed by the penetrating bolt and the first nut and the first gasket. The first nut can rotate to a certain degree along with vibration of the through bolt, so that the amplitude of a micro-vibration part and a non-micro-vibration part of the through bolt is reduced, and the risk of fatigue fracture is reduced.

The utility model relates to the technical field of circuit board processing, in particular to dispensing equipment which comprises a bottom plate, a vertical plate, a box body, a motor, a threaded rod, a threaded block, a dispensing machine and a moving assembly, the moving assembly comprises a sliding rail, a sliding seat, a supporting plate, a motor, a roller, a rotating shaft, two limiting plates and a top plate, and the motor above the supporting plate is started to drive the rotating shaft to rotate to drive the dispensing machine to move. Due to the fact that the outer side walls of the rolling wheels make contact with the top walls of the sliding rails, the sliding seats are driven to move on the sliding rails, the limiting plates can limit the moving distance of the sliding seats and prevent the sliding seats from falling off from the sliding rails, the circuit board is moved in the mode, the circuit board is matched with the dispensing machine to complete dispensing work, the fatigue strength of workers is effectively reduced, and the working efficiency is improved. And the dispensing efficiency and quality of the circuit board are further improved.

The utility model relates to the technical field of coal mine equipment, in particular to a coal spontaneous combustion prevention temperature detection and early warning device which comprises a shell, a display screen, a buzzer, a spiral drill rod, a temperature sensor and a rotating assembly, the rotating assembly comprises a shell body, a hollow column, a driving motor, a connector, a rolling bearing and a rotating shaft, and the rolling bearing is fixedly connected with the hollow column. The rotating shaft is fixedly connected with the rolling bearing, one end of the rotating shaft is fixedly connected with the driving motor, the other end of the rotating shaft is detachably connected with the connector, the spiral drill rod is fixedly connected with the connector, and the driving motor in the shell is started to enable the rotating shaft to rotate in the rolling bearing. The rotating shaft can be fixed and rotated at the same time, so that the spiral drill rod below the connector is driven to rotate, the spiral drill rod is rotated in this way, the fatigue strength caused by manual rotation is reduced, and the practicability of the spiral drill rod is improved.

The utility model provides a sealing device suitable for an angle valve, and belongs to the technical field of angle valve sealing auxiliary devices. Comprising a lantern ring, an integrally-formed baffle ring is arranged at the top of the lantern ring, an integrally-formed L-shaped supporting ring is arranged at the bottom of the lantern ring, a first sealing ring is arranged on one side of the L-shaped supporting ring, and a second sealing ring is arranged on the other side of the L-shaped supporting ring. A second sealing ring is arranged on the other side of the L-shaped supporting ring. Through the sealing assembly, water flow can be prevented from seeping from gaps between the inner wall of the external water pipe and the outer wall of the water outlet end and the outer wall of the water inlet end, the first sealing ring and the second sealing ring can seal the side walls of ports of the water outlet end and the water inlet end, the baffle ring can seal the side wall of a pipe opening of the external water pipe, and the sealing waterproof effect is further improved; and compared with a traditional sealing and waterproof mode adopting thread seal tape winding, time and labor are saved, the fatigue strength of workers is reduced, and the sealing and waterproof effect is better.

The utility model relates to the technical field of vehicle transportation, in particular to a parking plate of a vehicle transportation semitrailer, which comprises a parking plate body, a baffle, a support and an overturning assembly, the overturning assembly comprises two track plates, a moving plate, a driving motor, a threaded rod, a first base, a second base and a supporting rod, the driving motor is started to drive the threaded rod to rotate, and the supporting rod is driven to rotate. The movable plate can be driven to move leftwards between the track plates due to the characteristic of threads, at the moment, one end of the supporting rod rotates clockwise in the first base, and the other end of the supporting rod rotates anticlockwise in the second base, so that the baffle is turned over to make contact with the outer side wall of an automobile tire, and the automobile tire is protected. In this way, the convenience of fixing the automobile by workers is improved, the fatigue strength of the workers can be effectively reduced, and the efficiency and quality of fixing the automobile are improved.

The invention relates to the technical field of aero-engines, and discloses a blade vibration fatigue test analysis method and system, and the method comprises the steps: carrying out the vibration fatigue test analysis of a plurality of test blades of a test blade type in a gradient stress test mode; obtaining a test stress value before the corresponding test blade generates cracks under each test stress and a cycle index when the cracks are generated, and analyzing to obtain the fatigue strength of each test blade; and finally, mathematical statistics is introduced, a test result is analyzed according to the fatigue strength of each test blade, the number of the test blades and the test stress gradient, and the lowest statistical fatigue strength of the test blade profile is obtained. According to the method, fewer test samples are needed by the stepping method, generally, only 3-6 test blades are needed as the test samples, compared with a trafficability method, the obtained fatigue limit test result is more accurate, and the method is suitable for the conditions that the number of the test samples is small, and the fatigue limit precision requirement is high.

This utility model discloses a gauge for testing exhaust pipes, including a fixing component. The fixing component includes a base, and a fixing clamp for fixing the exhaust pipe is installed on the top end face of the base. A support component is installed on one side wall of the fixing component, and a test component is slidably connected to the inner wall of the support component. Limiting components matching the test component are installed on both sides of the inner wall of the support component. A control component is threadedly connected to the bottom end of each set of limiting components. The limiting component includes a pair of hollow shells, and several sets of guide blocks are slidably connected to one side wall of the hollow shells. Compared with the prior art, this utility model's gauge for testing exhaust pipes eliminates the need for staff to frequently raise the impact blocks in impact testing laboratories. Furthermore, the height of the impact blocks can be adjusted according to actual testing needs to obtain different test results, greatly reducing staff fatigue and increasing the accuracy of experimental results.

The utility model discloses a handle for electronic thoracoscope and laparoscope, including casing, interface, signal board, mainboard and rotating component, the front end outside of casing is provided with locking device, and locking device inside hollow, the interface, signal board and mainboard all are located in the casing, the interface is located locking device terminal, signal board and mainboard are connected through FPC between, and signal board and mainboard are rigidly connected between, rotating component includes angle knob, gear and connecting rod, angle knob is located the outside of casing, and angle knob is set up in the outer peripheral surface of gear, and both synchronous rotation, the front end of gear is fixedly connected with mainboard through connecting rod. The utility model discloses still a kind of electronic thoracoscope and laparoscope. The utility model has the beneficial effect that: the utility model restricts the rotation angle of human wrist, improves the convenience of surgical operation, so that doctors can more conveniently and efficiently obtain different visual angle surgical field of view, ensure the accuracy of surgical operation.

The present invention specifically relates to a connection structure of a concrete anti-collision guardrail on a steel bridge deck, including a concrete anti-collision guardrail, wherein anti-collision guardrail steel bars are arranged inside the concrete anti-collision guardrail, and the steel bridge deck is provided with a longitudinal perforated plate along the length direction of the guardrail, wherein the longitudinal perforated plate is vertically welded to the steel bridge deck, and the concrete anti-collision guardrail and the steel beam are connected as a whole by welding the anti-collision guardrail steel bars and the longitudinal perforated plate connecting pieces. The concrete anti-collision guardrail of the present invention is arranged on both sides of the steel bridge deck, and the concrete anti-collision guardrail and the steel bridge deck are connected as a whole by welding the anti-collision guardrail steel bars and the two longitudinal perforated plate connecting pieces, which can not only improve the connection performance of the concrete anti-collision guardrail and the steel bridge deck, but also avoid a large number of transverse discontinuous welds between the anti-collision guardrail steel bars and the steel bridge deck, thereby improving the fatigue strength and service life of the steel bridge deck.

The utility model relates to the technical field of antigen detection, in particular to a pathogen elution test tube, a cotton swab head can be scraped with the inner sides of a plurality of first annular scraping blades only by shifting a cotton swab up and down, so that sample pathogens on the cotton swab head are eluted, the use is more convenient, the elution effect of the pathogens is improved, and the detection efficiency is improved. The first flexible ring is used for blocking, liquid is prevented from being splashed out from the tube wall when the cotton swab is stirred, the cotton swab head can be effectively blocked, the cotton swab head is prevented from being disengaged from the tube body when the cotton swab is stirred up and down, the first flexible ring is used for stirring and guiding the cotton swab, and the cotton swab is prevented from being disengaged from the tube body. The swab swab can be inserted into the middle of the inner side of the first annular scraping blade in an accurate stroke, by arranging the first flow guide hole, when the swab swab is stirred, an extracting solution can flow up and down through the first flow guide hole, the pressure relief effect is achieved, the mixing effect of the extracting solution and a sample can be improved, the sample can be mixed in the solution more evenly and fully, and the sample quality is improved. And the detection precision is improved.

The present invention relates to the technical field of automobile production and assembly, and more specifically, to a rear suspension lower longitudinal arm expansion mechanism, comprising a first linear motion mechanism, a second linear motion mechanism, a first support mechanism, a second support mechanism and a drive mechanism, wherein the first support mechanism is connected to the first linear motion mechanism, the second support mechanism is connected to the second linear motion mechanism, and the drive mechanism is connected to the first linear motion mechanism and the second linear motion mechanism to drive the first linear motion mechanism and the second linear motion mechanism to move in opposite directions. No manpower is required to expand the longitudinal arm, and only one worker is required to complete the work, and the surface of the longitudinal arm can be well protected.

The utility model relates to the technical field of cold chain transportation, in particular to a quick disinfection and fresh-keeping device for poultry meat cold chain transportation, which comprises a fresh-keeping box, a base is arranged at the bottom of the fresh-keeping box, a storage rack is arranged in the fresh-keeping box, and ultraviolet disinfection lamps are mounted on two sides in the fresh-keeping box. A first mounting groove is formed in the base, a moving assembly is arranged in the first mounting groove, a second mounting groove is formed in the base, a refrigerator is arranged at the top end in the second mounting groove, heat dissipation holes are formed in the position, corresponding to the second mounting groove, of the bottom of the base, a purification assembly is arranged on one side of the fresh-keeping box, and an operation panel is arranged on one side of an opening door. According to the rapid disinfection and preservation device for poultry meat cold chain transportation, by arranging the moving assembly, the rapid disinfection and preservation device for poultry meat cold chain transportation can be conveniently carried and moved, and manpower consumption can be effectively reduced in the actual moving process, so that the fatigue strength of workers can be effectively reduced, and the rapid disinfection and preservation device is relatively convenient to use.