667results about How to "Fix damage" patented technology

The invention discloses an automatic illumination adjusting method and system for an agricultural greenhouse, a medium and a product, and relates to the field of seed and seedling cultivation, the method comprises the following steps: obtaining image data of target seedlings in a seedling raising area, and determining seedling height data and leaf density distribution of the target seedlings according to the image data; determining initial illumination intensity and illumination distribution data of the seedling raising area according to the image data and the illumination parameters of the seedling raising area; when the initial illumination intensity is lower than a preset light intensity lower limit, determining a target adjustment angle of the light supplementing plate based on the seedling height data, the leaf density distribution and the illumination distribution data; adjusting the inclination angle of the light supplementing plate to a target adjusting angle, and obtaining the corrected illumination intensity of the seedling raising area in real time; and when the corrected illumination intensity is lower than the preset light intensity lower limit, adjusting the luminous intensity of the LED light source until the corrected illumination intensity is not lower than the preset light intensity lower limit. According to the invention, energy loss of agricultural greenhouse light supplement can be saved.

The invention belongs to the technical field of two-dimensional materials, and particularly relates to a clean and lossless two-dimensional semiconductor material transfer method. The transfer method comprises the following steps: growing a two-dimensional semiconductor material on a growth substrate, then growing an inorganic protective layer on the surface of a two-dimensional semiconductor, spin-coating an organic polymer support layer, heating and curing, then stripping the growth substrate, transferring the stripped structure to a target substrate, and removing the organic polymer support layer to obtain the two-dimensional semiconductor material. An inorganic protection layer / two-dimensional semiconductor / target substrate structure is obtained, and two-dimensional semiconductor material transfer is completed. The two-dimensional semiconductor material transfer method is simple and easy to implement, clean and lossless transfer of the two-dimensional semiconductor material is achieved, meanwhile, the transferred two-dimensional semiconductor material can be protected against influences of water and oxygen in air, and the original performance of the two-dimensional semiconductor material is reserved to the maximum extent.

The invention discloses an automatic industrial robot with a turnover mechanism, relates to the field of manipulators, and solves the problem that when an existing automatic industrial robot with a turnover mechanism clamps an irregular object, the stress of a clamping rod is too large, and the surface of a material is prone to being damaged. Comprising a base, a mechanical arm, a clamping mechanism, an adjusting mechanism and an overturning device, the clamping mechanism comprises a rotating column, a rotating disc, a clamping rod and a clamping plate, the two sides of a material are clamped through the clamping plate, the clamping plate located at the bottom is in linkage in the clamping process to be inserted into the bottom of the material, the material is scooped up, and the material is overturned. The other three sets of clamping plates clamp and fix the side faces of the materials, the stability of the materials in the carrying process is improved, the distance between the rotating columns on the two sides is adjusted through an adjusting mechanism to adapt to clamping of the materials of different sizes, the rotating columns are driven by a turnover device to rotate, and turnover of the materials is achieved. Meanwhile, adjustment of the adjusting mechanism on the position of the rotating column is not affected.

The invention discloses a multi-port energy router in the technical field of routers, and the router comprises a connection base, a route transmission assembly is installed at the top of the connection base, the route transmission assembly comprises an installation shell, one side of the installation shell is provided with a port protection part, one side of the installation shell is provided with an arc-shaped notch, and the arc-shaped notch is provided with a port protection part. The arc-shaped sliding grooves are formed in the two sides of the inner wall of the arc-shaped notch, the multiple sets of connecting ports are formed in one side of the arc-shaped notch, and when the multi-port energy router is not connected with a network cable, the arc-shaped sliding plate is slidably adjusted to the outside of the arc-shaped notch, the connecting ports and the power supply connecting port formed in one side of the arc-shaped notch can be effectively closed, and the network cable can be conveniently connected to the router. According to the multi-port energy router, dust and other impurities can be prevented from entering the connection port and the power supply connection port, so that interference of the entering dust and other impurities on data connection is avoided, and when the multi-port energy router needs to be connected with a network cable, only the arc-shaped sliding plate needs to be stored and adjusted in the arc-shaped sliding groove formed in one side of the arc-shaped notch in a sliding manner.

The invention relates to the technical field of engineering machinery transmission parts, in particular to an engineering machinery drive axle main transmission assembly which comprises a differential shell, a driving spiral bevel gear and a large spiral bevel gear, the driving spiral bevel gear and the large spiral bevel gear are meshed with each other, the large spiral bevel gear is connected with the differential shell, and force is transmitted to the large spiral bevel gear through the driving spiral bevel gear. The large spiral bevel gear changes the transmission direction of force and drives wheels to operate, the driving spiral bevel gear is provided with a main spiral bearing and an oil seal, the main spiral bearing and the oil seal are assembled on the main transmission shell, the main transmission shell is provided with an oil groove set for lubricating the main spiral bearing and the oil seal, a flexible spacer bush is arranged between inner rings of the main spiral bearing, and the flexible spacer bush is connected with the main spiral bevel gear. A differential assembly with a locking function is arranged in the differential shell. According to the scheme, the whole machine trafficability under complex road conditions can be improved, the manufacturability in the assembly process is optimized, and the assembly cost and the part cost are reduced.

The invention relates to the technical field of wastewater treatment, and discloses an aluminum oxidation wastewater treatment system and method, and the system comprises a tank body, the top end of which is connected with a top cover through a bolt; the crushing feeding assembly is arranged on the top cover and is used for crushing large-particle impurities in the sewage; the stirring assembly is arranged in the tank body and is used for stirring sewage in the tank body; the temperature control assembly is arranged on the outer wall of the tank body and is used for assisting in purifying the sewage; the filtering assembly is arranged at the bottom end of the tank body and is used for filtering the sewage subjected to pH regulation again. Through cooperation of internal structures of the crushing feeding assembly, large-particle impurities in sewage entering the hopper are crushed, meanwhile, the amount of sewage entering the tank body is controlled, and the problems that due to impurity blockage, system operation is unstable, and the sewage treatment efficiency is reduced are solved.

The invention discloses a sorting and transporting device for warehouse logistics and an operation method thereof, and relates to the technical field of express sorting, the sorting and transporting device comprises a sorting main body, an adjusting table is fixedly connected to the center of the top of the sorting main body, and a conveying belt is arranged at one end of the outer wall of the adjusting table; the end, away from the adjusting table, of the top of the sorting body is fixedly connected with a sorting conveying disc, and the end, close to the sorting conveying disc, of the top of the sorting body is fixedly connected with a flow dividing pipe. The deflection bin is arranged at the top of the electric control rotating disc, a deflection plate arranged in the deflection bin is used for achieving the purpose of overturning box-packed expresses, the overturning frame is arranged in the overturning bin, so that the purpose of overturning bagged expresses is achieved, the guiding pipe is arranged at one end of the arc-shaped pipe, and therefore the purpose of overturning small expresses is achieved; and the problems that in the using process of the sorting and transporting device for warehouse logistics, the express parcels often need to be overturned and placed manually, time and labor are wasted, and the working efficiency is very low are further solved.

The invention discloses a surface phosphating and cleaning device for metal rollers for foils, and relates to the technical field of metal material surface treatment.The surface phosphating and cleaning device comprises a base and a fixing frame, a phosphating pool and a cleaning pool are fixedly arranged at the top of the base, and two walking mechanisms are arranged at the top of the base; a portal frame is fixedly connected between the tops of the two walking mechanisms, two first multi-stage electric telescopic rods are symmetrically arranged on the top face of the inner side of the portal frame, a mounting plate is fixedly connected to one ends of the first multi-stage electric telescopic rods, two guide rods are fixedly connected to the bottom of the mounting plate, and a fixing frame is fixedly connected with the guide rods. Three swing washing structures are arranged outside the fixing frame, and the first storage rack and the fixing frame are fixedly connected in a penetrating mode. According to the surface phosphating cleaning device for the metal rollers for the foils, the problem that a plurality of metal rollers are damaged due to mutual collision during phosphating is solved.

The utility model relates to the technical field of heat conduction oil furnaces, in particular to an energy-saving heat conduction oil furnace which comprises a motor fixedly connected to the upper end of a body and used for providing power, the output end of the motor is connected with fan blades used for cooling through keys, and the outer surface of the motor is sleeved with a heat insulation sleeve used for protection. The upper end of the motor is fixedly connected with a pipeline used for conveying, the outer surface of the pipeline is sleeved with heat preservation cotton used for protection, and the upper end of the body is fixedly connected with a support used for supporting. According to the energy-saving heat-conducting oil furnace, through cooperative arrangement of the body, the motor, the fan blades and the thermal insulation sleeve, a worker can effectively cool the motor, so that the motor can be prevented from being damaged due to overheating in operation, the service life of the motor can be prolonged, and the practicability of the heat-conducting oil furnace is further improved; the problem that the temperature of the motor is affected by heating of the heat-conducting oil furnace, so that the motor is damaged due to too high temperature is solved.

The present invention provides a vibration suppression system for a photovoltaic bracket and a single-axis photovoltaic bracket. The vibration suppression system includes a constraint protection unit, and the constraint protection unit includes a force transmission component, a vibration displacement amplification component, an eddy current energy dissipation component, and a high wind protection component. The input end of the force transmission component is connected to the two ends of the photovoltaic bracket in the rotation direction; the high wind protection component includes a magnetic conductor arranged on the outside of the transmission shaft, and the magnetic conductor has a magnetic attraction with the transmission shaft when the wind speed reaches the critical wind speed of static wind instability of the bracket. The single-axis photovoltaic bracket includes a photovoltaic panel, a photovoltaic panel rotating beam, and a vibration suppression system. The constraint protection unit of the vibration suppression system is divided into two groups, and the two groups of constraint protection units are respectively arranged at the two ends of the photovoltaic panel along the length direction; the force transmission component of the constraint protection unit is arranged parallel to the torsion surface of the photovoltaic panel, and the transmission shaft is arranged horizontally. The present invention has the advantages of avoiding damage to the bracket during wind vibration and improving the safety and reliability of the bracket.

The utility model relates to a V-shaped double-cylinder high-precision diesel engine body which comprises a diesel engine body, a fixing mechanism used for installing and fixing the diesel engine body is arranged at the bottom of the diesel engine body, and an auxiliary assembly facilitating operation of the fixing mechanism is arranged outside the fixing mechanism. According to the diesel engine body fixing device, rapid fixing of the device is achieved, a two-way lead screw is rotated in the fixing mechanism, so that a first clamping frame and a second clamping frame move in the opposite directions, a diesel engine body provided with a base is fixed, and the problem that equipment is damaged due to the fact that the diesel engine body is inconvenient to install and fix in the prior art is solved; the effect of preventing the bolt from rusting when the diesel engine body is disassembled is achieved.

The utility model relates to the technical field of charging piles, and discloses a new energy automobile charging pile which comprises a base, the inner wall of the base is movably sleeved with a limiting plate, the top of the limiting plate is fixedly connected with a lifting plate, and the bottom of the lifting plate is movably connected with the top of the base. And a charging pile body is fixedly mounted at the top of the lifting plate. By arranging the driving motor, the movable blocks, the first connecting rods and the second connecting rods, when the driving motor operates, the double-thread lead screw rotates to drive the two movable blocks and the four round rods to move oppositely, and then the two first connecting rods and the two second connecting rods rotate to drive the lifting plate to move upwards; and therefore, the charging pile body integrally moves upwards, the purpose of lifting the charging pile body is achieved, the problem that electronic components in the charging pile body are damaged due to the fact that rainwater submerges the bottom of the charging pile body is solved, and the practicability of the device is improved.

The present application relates to the technical field of drone charging platforms, and discloses a relay charging platform for substation inspection drones, including a platform body, which is arranged on the ground; a helipad, which is arranged on the top of the platform body and is used to charge drones; a power supply system, which includes a driving device, a power transmission device and a power generation device, the power generation device is arranged on the top of the platform body, the driving device is arranged on the platform body, the driving device is located below the power generation device, the driving device is electrically connected to the power supply system, and the power transmission device is connected to the power generation device and the driving device; the power generation device is used to provide power for the helipad, the driving device is used to drive the power generation device to generate power, and the power transmission device is used to transfer the power generated by the driving device to the power generation device. This substation inspection drone relay charging platform solves the problem of damage to the power supply system of the cabin after the cabin is struck by lightning.

The invention relates to the technical field of antennas, in particular to a mounting bracket for a communication antenna, which comprises a support rod, a fixed seat, a clamping mechanism and an angle adjusting mechanism, the antenna body is connected to the supporting rod through the fixing base and the clamping mechanism, and the included angle between the antenna body and the supporting rod is adjusted through the angle adjusting mechanism. The clamping mechanism comprises a clamping piece capable of generating elastic deformation, a pre-pressing piston and a pre-pressing spring, the pre-pressing piston and the pre-pressing spring are used for relieving the problem that the clamping force is changed due to thermal expansion and cold contraction, and the stability is improved; and by arranging the pressure adjusting mechanism, the wind speed detection assembly and the control system, the clamping force can be automatically adjusted according to the wind speed, and the stability is improved. By arranging a plurality of clamping pieces, the antenna body can be fixed on the supporting rod more firmly; through the control system, the switching assembly continuously switches the application position of the clamping force and adjusts the clamping force of the clamping piece, and the situation that the communication effect is affected due to loosening is avoided.

The invention discloses an auxiliary clamping device for sheet metal automobile door welding, relates to the field of sheet metal welding, and solves the problem that an existing clamping device easily causes damage to an automobile door, the auxiliary clamping device comprises a welding platform and four mounting boxes fixedly mounted at the top of the welding platform in a central symmetry mode, and suction cups are arranged at the tops of the mounting boxes; two symmetrically-distributed supporting columns are arranged at the bottom of the welding platform, and a base is fixedly installed between the two supporting columns. The material fixing mechanism is used for enabling the four suction cups to adsorb and fix a vehicle door, and the material fixing mechanism is mounted on the inner side of the mounting box; by means of the material fixing mechanism, a vehicle door can be adsorbed to the four suction cups, pressure borne by the suction cups is buffered, the vehicle door is fixed in an adsorption clamping and positioning mode, the problem that a traditional clamp easily causes damage to the vehicle door is solved, and therefore the effect of firmly positioning the vehicle door is achieved.

The invention provides an edge searching method and device for laser cutting, electronic equipment and a storage medium, and the method comprises the steps that an edge searching starting point and an edge searching track are obtained, a point laser sensor is controlled to move to the edge searching starting point and move according to the edge searching track, and in the moving process of the point laser sensor, edge searching height data of the point laser sensor are obtained; determining N edge point positions according to the edge searching height data, wherein N is greater than or equal to 3; a plate vertex and an edge searching angle are determined according to the edge point position, a machining graph is corrected according to the plate vertex and the edge searching angle, a laser cutter is controlled to machine the plate according to machining parameters, and the determination speed of determining the plate vertex and the edge searching angle according to the edge point position is increased; since the point laser sensor does not need to follow the nozzle of the laser cutter to the plate surface, and the data stability of the point laser sensor is higher than that of a capacitance sensor when the point laser sensor is interfered by external factors, the determination speed and accuracy of the edge point position can be improved, and the edge searching accuracy and efficiency are further improved.

The invention discloses a citrus combined type picking end effector which comprises a main body base, a clamping mechanism, a shearing mechanism and a driving mechanism, the shearing mechanism drives a double-rocker mechanism to enable cutters to be meshed quickly and generate large impact force to shear off fruit stems, in the clamping mechanism, inflatable fingers and a film pressure sensor are adopted, and the clamping mechanism is connected with the driving mechanism. The clamping force of the mechanism on the fruits is linearly increased to a certain value, the fruits are prevented from being bruised, the fruits are enveloped by the inflatable fingers, the clamping reliability is improved, the shearing position is adjusted through a gear and rack mechanism in the clamping process of the shearing mechanism, and the problem that the lengths of fruit stems of the fruits with different sizes are different due to the fact that the shearing position is fixed can be effectively solved.

The invention discloses a high-pressure water injection well head device, and relates to the technical field of oil field drilling and production water injection, the high-pressure water injection well head device comprises a first shell, the lower end of the first shell is fixedly connected with a water outlet pipe, the upper end of the first shell is fixedly connected with a second shell, and a third shell is arranged above the second shell; the upper end of the third shell is fixedly connected with a water inlet pipe, the lower end of the second shell is connected with a backflow prevention mechanism, an annular groove is formed in the upper end of the second shell, a filtering mechanism is arranged in the annular groove, and four mounting grooves are formed in the inner wall of the third shell. The four mounting grooves are formed in the circumferential direction of the inner wall of the third shell at equal intervals. Impurities in water can be effectively filtered, it is guaranteed that the water is cleaner, the influence on the quality of an oil field is avoided, and the problem that a high-pressure water injection wellhead is prone to being damaged due to backflow of water in the oil field is effectively solved.

The utility model provides a protection device for an automatic pressure maintaining system of a shield tunneling machine. The protection device comprises a connecting pipe communicated with the automatic pressure maintaining system and the shield tunneling machine soil bin, a pipe opening of the connecting pipe is located on a breast plate of the shield tunneling machine soil bin, the protection device further comprises a seamless steel pipe elbow matched with the pipe opening of the connecting pipe, and one end of the seamless steel pipe elbow is fixed to the pipe opening of the connecting pipe in a butt joint mode. The other end of the seamless steel pipe elbow faces downwards, a horn mouth is arranged at an end opening of the seamless steel pipe elbow, the small-opening end of the horn mouth is in butt joint and fixed with the end opening of the seamless steel pipe elbow, a grating is fixed on the large-opening end face of the horn mouth, and a floating ball is movably arranged in the horn mouth. The automatic pressure maintaining system is simple in structure, the problem that the automatic pressure maintaining system is damaged due to the fact that muddy water intrudes through an automatic connecting pipeline when the position of muck in a soil cabin is high in an existing automatic pressure maintaining system is solved, and the risk that the automatic pressure maintaining system is damaged in the shield tunneling process is greatly reduced.

The utility model discloses an implant loading bottle, relates to the technical field of implant loading bottles, and aims to solve the problems that in the using process of an existing loading bottle, when an implant with the size specification smaller than that of a bottle body is placed, the implant has a certain moving space in the transportation process, and the implant is prone to being abraded or damaged under the action of transportation vibration. The screw rod is installed in the bottle cap, the bottle cap is in threaded connection with the screw rod through a first threaded mechanism, a rotating disc is installed at the upper end of the screw rod, a transmission plate is installed at the lower end of the screw rod, and a first sponge pad is arranged on the lower surface of the transmission plate; and the second sponge pad is arranged on the bottom face in the bottle body, the bottle cap is in threaded connection with the bottle body through a second threaded mechanism, a rubber coating sleeve is arranged on the outer wall of the bottle cap, and first anti-skid lines are arranged on the outer wall of the rubber coating sleeve.

The invention discloses a lossless disassembling device and system for a power battery module, and belongs to the field of battery module disassembling. A power battery module lossless disassembling device comprises an operation machine table and a milling platform arranged on the operation machine table in a sliding mode, and a fixed overturning clamping plate used for clamping a battery module is arranged in the milling platform; the movable rack is fixedly connected to the operating machine table, and an X-axis moving assembly is arranged on the movable rack; the mechanical tool changing hand is arranged below the X-axis moving assembly; the Y-axis moving assembly is connected to the X-axis moving assembly in a sliding manner; the milling assembly is arranged on the Y-axis moving assembly in a sliding mode, and a CCD detection assembly is further arranged on the milling assembly; the rolling brush dust removal mechanism is arranged in the middle of the top of the operation machine table; the purpose of lossless disassembly of the power battery module is achieved, secondary utilization of the module battery can be achieved, the working efficiency is improved, the cleaning effect is high, and the problems that the labor intensity of manual operation is high and safety accidents are likely to happen are solved.

The invention relates to the technical field of battery energy storage, and discloses an energy recovery protection circuit, a BMS protection board and an energy storage device.The energy recovery protection circuit is arranged between a battery and an output end and comprises an absorption unit located between a positive electrode and a negative electrode of the output end, and the absorption unit comprises an absorption capacitor and a follow current device which are arranged in series; the voltage conversion unit is connected with the absorption unit and an output capacitor between the positive electrode and the negative electrode of the battery. The absorption unit is used for enabling the loop current to flow through the conducted follow current device and then charge the absorption capacitor when the positive electrode and the negative electrode of the output end are communicated to generate the loop current; and the voltage conversion unit is used for entering a working state when the absorption capacitor is charged to exceed the starting voltage of the voltage conversion unit so as to charge the battery after voltage conversion is carried out on the output voltage of the absorption capacitor. The circuit realizes energy recovery when the output end of the external load is short-circuited, and can also prevent the two ends of the discharge switch from being damaged due to overhigh peak voltage generated at the two ends of the discharge switch.

The invention provides a flexible circuit board assembly method and system based on multi-camera visual field visual servo, and the method comprises the steps: positioning a flexible circuit board through a first camera, obtaining a first outer contour feature of a backboard, and grabbing the backboard according to the first outer contour feature; and positioning the flexible circuit board through the second camera to obtain a second outer contour feature of the backboard and a circuit feature of the interface, and mapping the position of the circuit feature to a visual angle of the first camera according to a corresponding relation between the first outer contour feature and the second outer contour feature and a position relation between the second outer contour feature and the circuit feature. A visual identification characteristic value is obtained; and filtering the visual identification characteristic value by combining particle filtering and Kalman filtering, and assembling the flexible circuit board by combining the filtered characteristic value. According to the invention, the visual servo technology under the multi-camera visual field is used to accurately identify the flexible circuit board, and the problem that the camera cannot directly obtain the characteristics of the circuit board due to the fact that the visual field is shielded in the assembly process is solved.

The invention relates to the technical field of charging piles, and discloses a charging pile with a charging port capable of being overturned and hidden, the charging pile comprises a charging pile main body, the inner wall of the charging pile main body is rotatably connected with a maintenance door, the inner wall of the maintenance door is fixedly provided with a gun rack, and the inner wall of the gun rack is connected with a charging gun in a clamping manner; a power line bin is fixedly assembled at the bottom of the charging pile body, a control screen is fixedly assembled on the outer wall of the charging pile body, and an emergency stop key is fixedly assembled on the outer wall, located at the bottom of the control screen, of the charging pile body. When a person drives a power line to move through a charging gun, the power line drives a power line copper pipe to move along a sliding groove, the power line copper pipe conducts extrusion pressure on a telescopic plate, data detected by a pressure sensor is transmitted to the charging pile body, the charging pile body controls a driving assembly, and the power line copper pipe is pushed through the driving assembly; the power line is pushed to move, so that the problem that the power line cannot be pulled from two sides of the equipment by personnel is solved.

The utility model relates to the field of numerical control grinding machines, and discloses a numerical control grinding machine positioning and pushing device which comprises a numerical control machine table, a grinding machine body is arranged on the edge of the upper surface of the numerical control machine table, and a feeding belt is installed at the position, close to the middle of the grinding machine body, of the upper surface of the numerical control machine table; a groove wheel is fixedly connected to the outer surface of the supporting shaft, a plurality of limiting grooves are formed in the upper surface of the groove wheel, a movable disc is rotationally installed at the position, close to the supporting shaft, of the upper surface of the supporting frame, an adjusting rod is welded to the edge of the top end of the movable disc, and the bottom end of the movable disc extends into the supporting frame to be provided with a driving motor; the workpieces are conveyed on the feeding belt at a certain interval, so that the effect of conveniently pushing the polished workpieces at equal intervals is achieved, the interval adjusting effect during workpiece conveying is improved, and the problem that the workpieces are damaged due to mutual friction and collision during polishing is solved.

The utility model relates to the field of photovoltaic technology, and provides a desert photovoltaic support comprising a bottom plate, the top end of the bottom plate is provided with a lifting assembly for adjusting the height of a photovoltaic piece, the top end of the lifting assembly is provided with a protective frame, the top end of the protective frame is provided with a protective plate, one side of the inner wall of the protective frame is provided with a rotating shaft, and the rotating shaft is provided with a rotating shaft. A rotating shaft is arranged at the top end of the electric push rod, a supporting plate is arranged on one side of the rotating shaft, a photovoltaic panel is arranged at the top end of the supporting plate, and a cleaning assembly for removing sandy soil at the top of the photovoltaic panel is arranged at the bottom of the supporting plate. And by controlling the cleaning assembly to slide downwards on the surface of the photovoltaic panel, sandy soil on the surface of the photovoltaic panel can be removed, and the problem that in the prior art, sandy soil on the photovoltaic panel is inconvenient to clean through a photovoltaic support is solved.

The utility model relates to the technical field of petroleum equipment, in particular to a novel plunger pump valve taking device which comprises a novel plunger pump assembly, the novel plunger pump assembly comprises a valve taking rod, a push rod, a handle pin and an adjusting nut, the push rod is connected with the valve taking rod in a sliding mode and located in the center of the interior of the valve taking rod, and the handle pin penetrates through the valve taking rod to be detachably connected with the push rod. The plunger pump assembly is detachably connected with the valve taking rod and located on one side of the outer surface of the push rod, the adjusting nut is detachably connected with the valve taking rod and located on the outer surface of the valve taking rod, the adjusting nut is arranged below the handle pin, an original structure is modified and replaced with the novel plunger pump assembly, and therefore the problems that an existing valve taking device has certain defects, and a valve body is prone to being damaged are effectively solved.

The utility model relates to the technical field of inner cores of instruments and meters, and discloses an instrument and meter with an inner core convenient to replace, which comprises a top plate, a first connecting block is fixedly connected to the side wall of the top plate, a second fixing column is fixedly connected to the bottom of the first connecting block, and a limiting ball is fixedly connected to one end of the second fixing column. A semicircular plate is arranged on the outer wall of the limiting ball, a first connecting plate is fixedly connected to the semicircular plate, a first spring is arranged at the bottom of the first connecting plate, a second connecting plate is fixedly connected to one end of the first spring, a supporting plate is fixedly connected to the top of the second connecting plate, and the side wall of the semicircular plate is rotationally connected to the side wall of the supporting plate. According to the utility model, the handle is pulled, the handle drives the first connecting block to move, the first connecting block drives the second fixing column and the limiting ball to move, and the limiting ball is clamped on the inner wall of the semicircular plate, so that the opening and closing type self-locking effect is achieved, the problems of exposure and damage of internal elements caused by incapability of self-locking are solved, and the practicability is improved.

The utility model belongs to the field of oxygen supply type fish fry transport cases, and particularly relates to an oxygen supply type fish fry transport case which comprises a transport case body, a connecting assembly is fixedly connected to the inner side wall of the transport case body, oxygen supply equipment is arranged on the side face of the connecting assembly, and buffer structures are fixedly connected to the bottom face of the transport case body in an axial symmetry mode. The buffering structure comprises side plates symmetrically and fixedly connected to the bottom face of the transport box, a sliding rod is fixedly connected between the two side plates, the two ends of the sliding rod are slidably connected with sliding blocks, and hydraulic buffering rods connected with the sliding blocks are arranged on the side faces of the side plates. Through the structural design of a hydraulic buffer rod and a spring in the buffer structure, when the universal wheel is bumpy, a connecting rod pushes a sliding block to slide along a sliding rod to compress the spring, and meanwhile, the hydraulic buffer rod absorbs vibration energy, so that the multi-stage damping function is realized, and the problem that internal elements of the oxygen supply equipment are damaged due to long-term vibration is solved; and the vibration amplitude of the transport box is effectively reduced.

The utility model discloses portable blind guiding equipment, and particularly relates to the technical field of blind guiding equipment, the portable blind guiding equipment comprises a handle head, one end of the handle head is fixedly provided with a winding rope; and the fixing part is fixedly installed at the other end of the handle head, and the fixing part is used for protecting the handle head. According to the utility model, the fixed part is matched with the movable part, so that the height of the stick body can be conveniently adjusted in a small range according to the actual height of a blind person, the problem that the handle head is damaged due to inclination of the stick body can be avoided, and an electronic structure arranged in the handle head is effectively protected; therefore, the blind guiding equipment is safer in use process and more humanized in use experience; according to the blind guiding device, by arranging the abutting part, the clamping plate and other structures, the blind guiding device can lean against the wall body in an inclined mode conveniently, the stability in the placing process is improved, bag type handles, dog leash ropes and the like can be hung through the clamping plate, the using process of the blind is greatly facilitated, and the using experience is improved.