126results about How to "Won't hurt" patented technology

This utility model provides an insect branch-fixing survey and rearing observation box, relating to the technical field of insect observation devices, and is designed to solve the problem of easy damage to branches in existing insect survey techniques. The insect branch-fixing survey and rearing observation box includes a first half-box and a second half-box. The first half-box has a first upper half-hole and a first lower half-hole, and the second half-box has a second upper half-hole and a second lower half-hole. The first and second half-boxes are joined to form a receiving cavity. When the first and second half-boxes are joined, the first and second upper half-holes together form a first hole for the branch to pass through, and the first and second lower half-holes together form a second hole for the branch to pass through. The first and second holes are respectively sealed to the branch at different locations. Both the first and second half-boxes are made of transparent material, and at least one of the first and second half-boxes has a ventilation window with a detachable mesh screen. This utility model is less likely to damage branches.

This invention discloses a power cord anti-pull mechanism and an industrial six-axis robot, belonging to the field of industrial robot technology. The power cord anti-pull mechanism is applied to equipment requiring electrical power for operation. It includes a power cord, a power supply box, and an anti-pull device. One end of the power cord is equipped with a power plug, and the other end is used to connect to the equipment requiring electrical power. A power socket is provided on one side of the power supply box, into which the power plug can be inserted to connect to the power supply. The anti-pull device is disposed on the power supply box and includes a fastening device and a power device. The fastening device is used to secure the power plug after it is inserted into the power socket, preventing pulling between the power cord and the power socket. The power device provides power to the fastening device to secure the power plug. The power cord anti-pull mechanism can prevent problems such as poor contact or disconnection between the power cord and the power supply box during the operation of the industrial six-axis robot.

The invention discloses a freckle-removing and whitening mask which is prepared from the following raw materials: chrysanthemum, pearl, radix angelicae, almond, poria cocos, rhizoma atractylodis macrocephalae, peach kernel, ginseng, mung bean, bletilla striata, cortex moutan, rhodiola rosea, silkworm larva, Chinese yam, honeysuckle and the like. The facial mask is a pure traditional Chinese medicine facial mask, has remarkable curative effects on whitening, removing freckles, removing acnes and minimizing pores, and can effectively reduce facial skin damage, effectively inhibit growth of facial germs, promote vigor of subcutaneous capillaries of the damaged face, improve metabolism of the skin and enable the facial skin to reappear in a compact and refined state. In addition, the facial mask can enhance the ability of facial skin to resist invasion and stimulation of external germs, form a natural protective barrier for the facial skin, well repair, moisten and care the facial skin, and keep the facial skin comfortable, beautiful and healthy for a long time. Pure traditional Chinese medicine raw materials are selected, chemical components are not added, and harm to facial skin and the body is avoided.

The application discloses an explosion-proof liquid crystal display screen and relates to the technical field of explosion-proof liquid crystal display screens.The explosion-proof liquid crystal display screen comprises a base, a supporting seat fixed on the top of the base, a screen hinged on the top of the supporting seat, an outer frame fixed on the outer wall of the screen, and a square frame slidingly connected to the inner wall of the outer frame.When the square frame is impacted from the front side, the square frame moves towards the outer frame, and the compression of the return spring drives the square frame to move the transmission rod, further drives the L-shaped plate and the large limiting rod to move away from the outer frame.When the large limiting rod is separated from the rotating rod, the rotating rod and the protection plate are rotated under the return action of the large torsional spring, so that the protection plate is counterclockwise rotated to be parallel to the screen.When the screen is impacted from the front side and is tilted backward, the protection plate shields the screen to prevent sparks caused by secondary damage.

This invention discloses an industrialized construction equipment and method for cast-in-place pier columns. The industrialized construction equipment for cast-in-place pier columns is set on the outside of the pier body to form an integrated pier construction factory. With the column system as support, there is no need to set embedded parts or tie rod holes in the main structure, which will not damage the pier body structure itself and ensure the casting quality of the pier body. The lifting system, main bearing platform, upper self-elevating platform and lower self-elevating platform are all equipped with climbing mechanisms, which can climb upward as the columns in the column system are heightened, realizing continuous cast-in-place construction of the pier body. The upper and lower self-elevating platforms serve as docking channels and simple construction platforms between the lifting system, formwork system and the ground, improving construction efficiency and allowing for flexible up and down movement. Especially for taller piers, it provides workers with a construction platform with a good access environment, reduces climbing distance, and significantly improves construction safety.

The utility model relates to the technical field of scaffolds, in particular to a positioning scaffold for wall attachment in constructional engineering, which comprises a threaded pipe, the inner wall of the threaded pipe is fixedly connected with a limiting sleeve, the inner wall of the limiting sleeve is slidably connected with an assembly column, and the bottom end of the assembly column is fixedly connected with a connecting rod. The compression ring has the advantages that when the compression ring needs to be replaced, an operator firstly presses the two control plates to compress the spring, so that the locking pin retreats from the locking hole to unlock. And then the splicing ring is lifted upwards, the positioning pin can be separated from the blocking ring, and disassembly of the pressing ring is completed. When a new pressing ring is installed, the positioning pin automatically guides the splicing ring to be aligned with the blocking ring, and after the control panel is loosened, the spring pushes the locking pin to be clamped into the locking hole again to complete fixation. According to the design, replacement of the pressing ring can be completed within minutes without tools, construction requirements of walls with different thicknesses are particularly met, compared with a traditional welding type fixing mode, the maintenance efficiency is remarkably improved, and a main body structure cannot be damaged.

This utility model belongs to the field of environmental protection equipment technology, and provides a bag filter dust collector unit and a bag filter dust collector. The bag filter dust collector unit includes a tube sheet, filter bags, multiple impact plates, a rapping assembly, and a drive assembly. When dust removal is required, the drive assembly drives the rapping shaft to rotate, which in turn drives the rapping plates and rapping hammers to rotate. The rapping hammers first abut against one of the impact plates. As the rapping shaft continues to rotate, the rapping plates are subjected to force and bend, accumulating elastic potential energy. This continues until the plates detach from the impact plates and move to the next impact plate. The rapping hammers strike the impact plate, and the vibration received by the impact plate is transmitted to the bag body through the frame, causing the bag body to vibrate, thereby achieving the dust removal effect. Throughout the process, the rapping hammers do not contact the bag body, therefore, the bag body will not be damaged. The bag filter dust collector provided by this utility model includes the above-mentioned bag filter dust collector unit.

This utility model discloses a black key for an electric piano and an electric piano, relating to the technical field of electric pianos. It is used to mount on a keyboard base and includes a key body and an outer cover. The key body includes a mounting base for connecting to the keyboard base, with a protrusion at the upper end of the mounting base. The outer cover is made of a translucent material and has an open bottom. The outer cover is fitted onto the protrusion. Through the cooperation of the outer cover and the key body, a jelly-like visual effect is produced, unlike existing technologies where the effect is directly derived from the keys themselves. This not only creates a more realistic visual effect but also eliminates the need to disassemble the entire electric piano when these keys with special visual effects show signs of aging such as yellowing after prolonged use, making maintenance convenient.

The invention provides a display screen with a flexible adjustment peep-proof structure, and relates to the technical field of display screens, the display screen comprises a flexible adjustment cantilever support, a fixed plate surface, a display screen body and a full-wrapping peep-proof structure, the flexible adjustment cantilever support is detachably installed on the fixed plate surface, and the full-wrapping peep-proof structure is fixedly installed at the end of the flexible adjustment cantilever support in an embedded mode. The display screen body is located in the full-wrapping peep-proof structure. The display screen body can be installed in the full-wrapping peep-proof structure by flexibly adjusting the cantilever support to be matched with the full-wrapping peep-proof structure, the peep-proof screen plate does not need to be directly pasted or installed on the display screen body, and therefore the display screen body cannot be damaged; the display screen has the advantages that the display screen body can be adjusted flexibly, adhesive marks cannot be left on the display screen body, meanwhile, the full-wrapping peep-proof structure is mounted on the flexible adjusting cantilever support, a more flexible adjusting function can be provided for the display screen body, and the display screen can provide more convenience for daily use of people.

The utility model discloses a location picking tube device for cryopreservation box, including base, placing platform and detachable fixed in base location hole on the extraction pin, the placing platform is equipped with the placing hole that matches cryopreservation box and the first mounting hole that is used for being connected with base movably, the placing platform is connected with base movably through the reset subassembly, and the extraction pin is detachably fixed on the base location hole. The placing platform can move up and down relative to the base, and the cryopreservation tubes are ejected out through the extraction pins. The device is simple in design, convenient to operate and low in cost, and the cryopreservation tubes at any position of the cryopreservation box can be flexibly extracted through the detachable extraction pins; in addition, the extraction efficiency and accuracy of the target cryopreservation tube can be effectively improved through the positioning chamfers and the positioning holes; in addition, the placing holes in the placing platform can adapt to cryopreservation boxes of different designs, the cryopreservation boxes can be conveniently placed and taken, and the rectangular flanges, the chamfers and the elastic reset design of the reset assembly facilitate single-person operation so as to rapidly extract specified target cryopreservation tubes.

The present application relates to the field of paper barrel manufacturing, and discloses an expanded-mouth straight-wall type hot-melt adhesive storage paper barrel and a bottom sealing method thereof, which comprises the following steps: S1, a metal ring is sleeved on a paper barrel body, and an end portion sleeved with the metal ring is placed in a diameter expanding machine to expand the diameter, so as to form an expanded end on the paper barrel body; S2, a bottom plate is placed on a tray in a bottom sealing crimping machine, and then the paper barrel body is placed on the bottom sealing crimping machine, the bottom sealing crimping machine clamps the paper barrel body, and the tray sends the bottom plate upward into the expanded end; S3, a crimping die in the bottom sealing crimping machine moves upward, the crimping die crimps the expanded end, the crimping abuts against the bottom plate, the crimping cooperates with an inner top wall of the expanded end to seal the bottom plate, and the bottom sealing is completed. The present application has the advantages of convenient operation, good bottom sealing quality, and the fact that the inner wall of the paper barrel body is a straight wall with a uniform and consistent inner diameter, so that the pressure disc piston can be lowered to the bottom plate, thereby discharging all the hot-melt adhesive, and preventing waste of the adhesive.

The utility model relates to battery pack technical field discloses a kind of fire compartment's battery pack, including battery pack box, multiple partition horizontal plates and partition vertical plates are arranged in the battery pack box, the partition horizontal plate and partition vertical plate divide the entire battery pack into several fire compartments, the fire extinguishing assembly includes control valve, control valve output end is fixedly connected with infusion tube, the infusion tube bottom is fixedly connected with multiple spray heads, multiple spray heads are located in multiple fire compartments directly above, the bottom of battery pack box is provided with multiple pressure relief holes. In the utility model, when the battery in fire compartment ignites, the partition top spray head opens automatic sprinkling fire extinguishing, while the bottom rubber plug is pushed open, flame is injected downward along pressure relief hole, the effect of targeted fire extinguishing is achieved, the problem that traditional battery pack is difficult to accurately extinguish fire in the fire area when ignites, and is prone to cause fire spread and endanger personnel safety is solved, and the safety and efficiency of fire extinguishing are improved.

The utility model discloses an easy sleeve milling male tap with the function of losing hand, including male tap body and hand device, male tap body and hand device are connected through the thread, male tap body includes the salvage end, spacing section, connecting mandrel that set up in proper order, connecting mandrel is sealedly connected with the inner wall of hand device, and connecting mandrel is locked through the shear nail with hand device, the rear end of spacing section is provided with the guide surface, the front end of hand device is provided with the guide bevel, the guide surface, guide bevel all are the multi -wing helical surface, can be screwed together, the utility model discloses reasonable and reliable, has improved the small hole hole object that has fallen thing salvage success ratio, when cannot salvage, can relieve the connection of male tap body and salvage object, and will not produce the damage to the thread connection of male tap body and hand device, still made up the safety joint and male tap common use defect, reduced the operation risk, saved the time cost.

The present invention relates to a harvester capable of easily performing maintenance work on the drive belt, the harvester comprising: an engine (20); a grain hopper disposed at the rear of the engine (20) for storing harvested grains; a discharge device for discharging the grains stored in the grain hopper to the outside; a drive belt (26) for transmitting power from a pulley (23) driven by the engine (20) to the discharge device; and a cooling unit (RU) for cooling the engine (20); the cooling unit (RU) oscillates about an upper and lower axis (Y2) near the front of the machine body, thereby being able to be positioned to change between a normal position adjacent to the pulley (23) and a maintenance position separate from the pulley (23).

The utility model relates to the technical field of steel cord production, in particular to a special spacing carrier roller for copper-plated steel wires, which comprises a carrier roller main body, a plurality of grooves arranged according to preset spacing are arranged on the outer wall of the carrier roller main body, the grooves are used for supporting the steel wires, preset spacing is reserved among the plurality of steel wires, and the spacing of the steel wires is larger than that of the carrier roller main body. A first shaft hole and a second shaft hole are formed in the inner wall of the carrier roller body. The spacing carrier roller adopts a composite spliced structure, the outer layer adopts a plastic material with hardness lower than that of copper, the inner layer adopts a stainless steel pipe for reinforcement, the strength requirement is met, meanwhile, the service life of a high polymer material is long, the spacing carrier roller can be immersed in a copper sulfate solution for use for a long time, the surface of a steel wire cannot be damaged, the production quality of a copper-plated steel wire is effectively controlled, and the production cost is reduced. The shaft sleeve structures at the two ends can be replaced according to the abrasion condition, assembly is facilitated through the structural design, meanwhile, quick-wear parts can be replaced conveniently, and the use cost is reduced.

The utility model discloses a eustachian tube tampon with built-in support, eustachian tube tampon includes: tampon body and bellows support, tampon body includes big cone section and small cone section, and the narrow end of big cone section is connected with the narrow end of small cone section, and the conical cavity is formed in big cone section, and the straight hole passageway that is linked with conical cavity is equipped in small cone section, one end of bellows support is equipped with the multi -claw expansion head for the outside elastic open, when tampon body is sent into the specified position of eustachian tube, bellows support is placed in straight hole passageway, and multi -claw expansion head is placed in conical cavity and is outwardly braced open big cone section, to with eustachian tube isthmus department fixed tampon body, and big cone section of tampon body is close to nasopharynx, and the close adhesion with eustachian tube can be made through the bracing open of multi -claw expansion head, and the sound isolation is formed.

The present disclosure provides a resin concrete curb surface pouring mold, which belongs to the technical field of curb pouring molds, and comprises a carrier table, a plurality of sleeves fixedly arranged on the top side of the carrier table at equal intervals, a plurality of bottom plates arranged on the top side of the carrier table, and the outer peripheral wall of each bottom plate being in contact with the inner wall of a corresponding sleeve, two baffle plates I and two baffle plates II, and the two baffle plates I and the two baffle plates II being symmetrically arranged on the top side of a corresponding bottom plate. When the improved resin concrete curb pouring mold is used, the pouring mold can be disassembled into the baffle plate I, the baffle plate II and the bottom plate by moving the bottom plate upwards, and the demolding process of the curb is completed. Then, the baffle plate I, the baffle plate II and the bottom plate can be reassembled into a complete pouring mold by moving the bottom plate downwards, the demolding of the curb is relatively easy, the taking of the curb is facilitated, and the surface pattern of the curb is not damaged in the process.

The application discloses a kind of detection system of quick nondestructive testing fabric density, including size comparison module, platform module, image acquisition module, processing module;Platform module is fixed to be detected object and cooperates size comparison module to form the object to be detected that can be used for real-time detection, image acquisition module acquires corresponding image information and real-time backup storage data according to operator target detection position, and the original data after backup is transferred to processing module, and processing module calculates the fabric density of the object to be detected in specified range according to the space layer conversion of fiber, the application further discloses a kind of detection method of application detection system.Relative to prior art, the technical scheme of the present application has the advantages of being convenient, real-time and traceable, etc.The application not only has the advantages of being fast and convenient and not damaging the fabric, but also the data can be traced back and reproduced well, and has important application prospects in the field of textile fiber detection.

This utility model relates to the field of PVC smart card production technology and discloses a polishing and deburring device for PVC smart card production. The device includes a base, a polishing mechanism at the top of the base, and a recycling mechanism at the bottom of the polishing mechanism. The polishing mechanism includes a polishing component and a conveying component. The polishing component is located at the top of the base. In use, when polishing is required to remove burrs from the surface of the PVC smart card, a cylinder drives a clamping plate to clamp the PVC smart card. A hydraulic cylinder then moves the water reservoir and nozzles left and right, achieving stable and precise polishing. The multi-directional first nozzle and the inclined second nozzle can rinse and polish the smart card surface from different angles, effectively removing burrs, improving polishing efficiency and quality, and ensuring the smoothness and gloss of the product surface. The combination of a high-pressure pump and an overflow valve can stably control the water supply pressure and flow rate.

This invention proposes a measuring tool and method for measuring the axial clearance of spherical pistons in a hydraulic plunger pump. The tool includes a base plate, a rotating assembly, an indexing and positioning assembly, a positioning assembly, a measuring mechanism, and a quick-clamping mechanism. The rotating assembly accurately positions multiple spherical piston rods on the shaft-piston assembly in the circumferential direction. The quick-clamping mechanism then fixes the shaft-piston assembly axially, ensuring that the multiple spherical piston rods are in the same measurement state. The indexing and positioning assembly measures the axial clearance of each spherical piston rod individually, resulting in high detection efficiency and accurate measurement data.

The utility model relates to periodontal pocket flushing technical field, and disclose a kind of integrated illumination and residue collection function's periodontal pocket flushing nursing ware, including the handle of one end through pipeline and negative pressure aspirator are connected, the other end of the handle is connected with negative pressure suction tube, the end of the negative pressure suction tube is deformed and is formed with deformation part, the deformation part is connected with flat suction head, and suction hole is set up on the flat suction head;L-shaped rod is also fixedly installed on the outer wall of the handle end, and the end of the L-shaped rod is fixedly installed with illuminating lamp;There is a section on the negative pressure suction tube and L-shaped rod by the fixed hose. The periodontal pocket flushing nursing ware of integrated illumination and residue collection function, by setting fixed hose on negative pressure suction tube and L-shaped rod, so that it can be arbitrarily bent and keep shaping, and the operator can flexibly adjust suction angle and illumination direction according to oral environment, so as to improve adaptability and operational flexibility.

The present application belongs to the field of processing of conductive connecting line, and discloses a kind of woven shielded wire cutting device of signal line, it includes: first clamping part, it has first clamping hole, the outermost profile of the cross section of first clamping hole extends along its own axis and the area swept is first area, the axis of first clamping hole is first axis;First rotary disc, it can rotate around first axis;Second clamping part;Cutting part, it includes rotary cutter head and fixed blade installed on first rotary disc, rotary cutter head moves relative to fixed blade and forms cutting port, cutting port is located at one side of first axis and deviates from first area;Rolling brush.The present application sets cutting port at one side of first axis and deviates from first area, so that cutting port does not contact with signal line main body part, does not cause damage to signal line main body part, also does not cause axial displacement between shielding layer and inner layer structure or outer layer structure adjacent to it.

This utility model provides a traction structure for a loading platform, belonging to the field of loading and transportation technology. It solves the problem that existing loading platforms are difficult to conveniently and smoothly transfer goods within limited space. The traction structure of this loading platform includes a rectangular frame support. The supporting frame has two extension plates on its outer side at one end, with two through holes extending through this end. The extension plates have hanging slots with their openings facing the through holes. The inner side of the supporting frame has two guide slots communicating with the through holes along its length. The traction structure includes a U-shaped bracket with guide blocks at both ends. The guide blocks can slide along the length of the guide slots and can also pass through the through holes into the hanging slots and rotate within them. This traction structure of the loading platform facilitates convenient and smooth transfer of goods within limited space, while also enabling convenient and reliable storage.

The present application relates to the technical fields of compressor piston rod maintenance, and provides a reciprocating compressor piston rod protection device, which comprises a base, the left side of the base is connected with a bottom plate, the upper part of the bottom plate is provided with an oil tank, an oil pipe connected to the gear oil pump is output from the oil tank, an oil pipe connected to the electromagnetic reversing valve is output from the gear oil pump, an oil pipe connected to the throttle valve is output from the electromagnetic reversing valve, an oil pipe connected to the hydraulic control check valve is output from the throttle valve, an oil pipe connected to the balance valve is output from the hydraulic control check valve, and an oil pipe connected to the lifting oil cylinder is output from the balance valve. The piston rod is placed horizontally between the concave bracket and the upper and lower flaps, and the piston rod in the upper and lower flaps is converted from the horizontal state to the vertical state through the lifting action of the lifting oil cylinder, so that the deflection of the piston rod is prevented from changing, the probability of failure of the piston rod during operation is reduced, and the problem of difficult hoisting when the piston rod is vertically placed is solved.

The utility model relates to a blowout preventer for well mouth belongs to petroleum exploitation equipment technical field, including casing, piston, conical rubber core, upper pressure seal oil cavity, lower pressure loose oil cavity, upper pressure oil plug and lower pressure oil plug, the casing top is equipped with the cover plate of compacting conical rubber core, the piston inner hole is equipped with the support cylinder, the lower part inner hole of support cylinder is equipped with the embedded recess, the embedded recess is equipped with the centralizing copper bush, the lower part inner hole outside of casing is equipped with the support recess of locating support cylinder and centralizing copper bush bottom, the inner wall of support cylinder is equipped with cooling liquid cavity, the lower part outside wall of casing is equipped with cooling liquid inlet plug and cooling liquid outlet plug, and the inner end of cooling liquid inlet plug and cooling liquid outlet plug all are screwed in the mounting hole of support cylinder and communicate cooling liquid cavity. The utility model discloses centralizing copper bush can support and right the oil rod in the lower part, prevent deflection, can take away the heat generated when blowout preventer works in time, guarantees equipment to work under the suitable temperature, improves the performance stability.

The utility model discloses a heat-insulation anti-reflection functional film which comprises a base material layer, a titanium dioxide layer, an indium tin oxide layer, a base layer and an anti-reflection layer which are sequentially stacked, the refractive index of the indium tin oxide layer ranges from 1.8 to 2.0, and the refractive index of the antireflection layer ranges from 1.40 to 1.45. On one hand, the heat insulation and anti-reflection functional film can reduce external heat entering a vehicle and reduce the use energy consumption of the vehicle in daily life, the viewing of passengers to external natural landscapes can be greatly enhanced by matching with the anti-reflection coating, and due to the fact that the forbidden band width (band gap) of the ITO thin film is usually between 3.5 eV and 4.3 eV, the heat insulation and anti-reflection functional film has a good anti-reflection effect. The energy of photons in the ultraviolet light area is larger than the forbidden band width, so that photons are absorbed and electron transition is caused, the extremely low light penetration rate is shown, and therefore the skin of a user in the vehicle can be protected from being hurt by ultraviolet rays.

The utility model relates to the technical field of p-hydroxyacetophenone production, in particular to a filtering device for p-hydroxyacetophenone production, which comprises a box body, a feeding hole is formed in the top of the box body, a vibrating plate is mounted in the middle of the interior of the box body, and a screening box is mounted in the middle of the vibrating plate in a penetrating manner; a first filter screen and a second filter screen are installed in the screening box, vibration filtering devices are fixedly installed on the inner walls of the two sides of the box body at the bottom of the vibration plate in a front-back mode, and a collecting box is placed under a discharging port in the bottom of the screening box. A feeding port is formed in the top of a box body, a vibration plate connected with a material screening box in a penetrating mode is installed in the middle of the interior of the box body, a first filter screen and a second filter screen are installed in the material screening box, a vibration filtering device is fixedly installed at the bottom of the vibration plate, and a material collecting box is placed under the bottom of the material screening box. The two filter screens are mounted in the screening box, and are matched with the vibrating plate and the vibrating filter device to secondarily filter and screen hydroxyacetophenone, so that the problem that few impurities are left after filtration is solved.

The utility model provides butt joint assembly equipment for pipeline prefabrication production. The butt joint assembly equipment comprises a limiting sliding groove. The driving structure is mounted at one end of the limiting sliding groove; the butt joint structure is slidably connected to the interior of the limiting sliding groove, the butt joint structure comprises a support, a sleeve, a supporting plate, a screw hole and a limiting hole, the support is slidably connected to the interior of the limiting sliding groove in a vertical state, and the sleeve penetrates through and is fixed to the side wall of the top end of the support; the inflating structure is fixed on the side wall of the bracket; the butt joint assembly equipment for pipeline prefabrication production has the advantages that guide pipes of different sizes can be fixed conveniently, the side walls of the pipelines can be protected against damage, and the pipelines can be prevented from shaking during movable butt joint.

The utility model discloses an internal resistance measuring circuit for a backup power supply of a distribution automation terminal. The internal resistance measuring circuit comprises an MCU, a V / I conversion circuit and an amplification sampling part. The output port of the DAC module of the MCU is connected with the input end of the V / I conversion circuit; the positive and negative electrodes of the output end of the V / I conversion circuit are correspondingly connected with the positive and negative electrodes of the backup power supply. The positive and negative electrodes of the input end of the amplification sampling part are correspondingly connected with the positive and negative electrodes of the backup power supply, and the output end is connected with the input end of the ADC module of the MCU. The internal resistance of the battery is estimated by measuring the impedance characteristic of the battery under an alternating current signal, a high-power resistor is not needed, the size can be effectively controlled, a back-up power supply cannot be damaged by a small current signal, and a measurement result with higher precision can be conveniently obtained after signal amplification.

The utility model relates to a scanning device for ultrasonic direct flaw detection of a steel plate, which belongs to the technical field of detection and comprises a translation driving mechanism, a lifting mechanism, an operating mechanism and a probe mechanism, the bottom end of the lifting mechanism is arranged on the translation driving mechanism, the operating mechanism is arranged at the telescopic end of the lifting mechanism, and the probe mechanism is arranged on one side of the operating mechanism; the operating mechanism comprises a sliding sleeve and an extending operating rod, the extending operating rod is sleeved with the sliding sleeve, the bottom end of the sliding sleeve is arranged at the telescopic end of the lifting mechanism, one end of the extending operating rod is provided with a probe mechanism, and the other end of the extending operating rod is provided with a balance weight block; the probe mechanism comprises a probe front end seat, a probe clamping seat and an ultrasonic probe, the probe front end seat is of a circular ring structure, the lower end of the probe front end seat is connected with the probe clamping seat through a hollow connecting rod, a rubber clamping block is arranged in the probe clamping seat, and the ultrasonic probe is arranged in the rubber clamping block; the device is simple in structure, convenient to use and high in automation degree, effectively reduces the labor intensity, improves the stability and ensures the detection precision.